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DESCRIPTION JP2017520165

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DESCRIPTION JP2017520165
Abstract Embodiments of the present invention relate to the field of electronic products and
provide methods, devices and systems for supplying power to active noise reduction headsets.
This may solve the problem that the power supply operation of the active noise reduction
headset is very complicated. A method for powering an active noise reduction headset comprises
the steps of: receiving a signal of a first voltage transmitted by the terminal; and acquiring a
signal of the second voltage. Processing the signal, the second voltage is less than the first
voltage, and the signal of the second voltage is transmitted to the noise reduction chip of the
active noise reduction headset, thereby actively Noise Reduction The noise reduction chip of the
headset will be able to acquire a signal of the second voltage to perform the noise reduction
function. Methods, apparatus, and systems for supplying power to active noise reduction
headsets provided in embodiments of the present invention are used to supply power to active
noise reduction headsets.
Method, apparatus, and system for powering an active noise reduction headset
[0001]
The present invention relates to the field of electronic products, and in particular to methods,
devices and systems for supplying power to active noise reduction headsets.
[0002]
Advances in electronic technology have made the functionality of electronic products
increasingly powerful.
11-04-2019
1
The active noise reduction headset generates a reverse sound wave equal to the noise by using a
noise reduction chip and cancels the noise by using a reverse sound wave of noise, thereby
achieving a noise reduction effect Ru. An active noise reduction headset includes an audio
receiver, a noise reduction chip, and an audio output unit. The noise reduction chip is connected
to both the audio receiver and the audio output unit, the audio receiver may be a small
microphone, and the audio output unit may be a loudspeaker. The first audio input signal is
assumed to be a noise signal. After the audio receiver receives the first audio input signal and
outputs the first audio input signal to the noise reduction chip, the noise reduction chip
generates a second audio input signal. The second audio input signal and the first audio input
signal have the same amplitude and opposite phase. The noise reduction chip then outputs the
second audio input signal to the audio output unit, and the audio output unit outputs the second
audio input signal, whereby the first audio input signal is attenuated Or canceled, thus achieving
the purpose of blocking noise with an active noise reduction headset. If the noise reduction chip
weakens or cancels the received first audio input signal, power needs to be supplied to the noise
reduction chip.
[0003]
In the prior art, a lithium ion battery can be placed in an active noise reduction headset, and the
lithium ion battery supplies power to the noise reduction chip. In addition, the charger provided
to charge the lithium ion battery is configured for the active noise reduction headset. If the noise
reduction chip operates for a relatively long time, the lithium ion battery also needs to supply
power to the noise reduction chip accordingly for a relatively long time, and the power of the
lithium ion battery is exhausted If so, the charger needs to charge the lithium ion battery, which
allows the lithium ion battery to supply power to the noise reduction chip. Thus, the powering
operation of the active noise reduction headset is very complex.
[0004]
Embodiments of the present invention provide a method, apparatus, and method for supplying
power to an active noise reduction headset such that the power supply operation of the active
noise reduction headset solves the problem of being very complex. Provide a system. The
following technical solutions are used in the embodiments of the present invention to achieve the
above-mentioned purpose.
11-04-2019
2
[0005]
According to a first aspect, embodiments of the present invention provide a method for supplying
power to an active noise reduction headset. The active noise reduction headset is connected to
the terminal, and the method receives the signal of the first voltage transmitted by the terminal
by the active noise reduction headset and obtains the signal of the second voltage. Processing the
first voltage signal with an active noise reduction headset, the second voltage is less than the first
voltage, and the second voltage signal is active. Transmitted to the noise reduction chip of the
noise reduction headset, which allows the noise reduction chip of the active noise reduction
headset to obtain a signal of the second voltage to perform the noise reduction function, the
terminal Receiving the signal of the first voltage transmitted by the step of transmitting the
signal of the first voltage transmitted by the terminal to the microphone cable of the active noise
reduction headset Comprising receiving by active noise reduction headset by use.
[0006]
In a first possible implementation manner of the first aspect, the step of processing the signal of
the first voltage by the active noise reduction headset to obtain a signal of the second voltage
comprises: Processing the signal of the first voltage by the active noise reduction headset to
obtain the signal of the third signal, wherein the third voltage is less than the first voltage and
the signal of the third voltage Are sent to the chargeable battery of the active noise reduction
headset so that the chargeable battery can store the signal of the third voltage, and the
processing step, the signal of the second voltage Processing the signal of the third voltage by the
active noise reduction headset to obtain the third voltage, wherein the third voltage is greater
than the second voltage.
[0007]
With reference to the first aspect, ie the first possible implementation manner of the first aspect,
in a second possible implementation manner, after the step of receiving the signal of the first
voltage transmitted by the terminal The method further comprises the steps of: receiving the
second trigger signal current triggered by the user by the active noise reduction headset by using
a microphone cable of the active noise reduction headset; and active noise reduction
Transmitting the second current trigger signal to the terminal by the active noise reduction
headset by using the microphone cable of the headset, whereby the terminal is driven by the
terminal to the active noise reduction headset The step of transmitting, wherein the volume of
the audio signal to be transmitted can be increased according to the second current trigger signal
And, including the.
11-04-2019
3
[0008]
Referring to the first aspect, ie, any one of the first and second possible implementations of the
first aspect, in the third possible implementation, the first transmitted by the terminal The
method further comprises, after receiving the voltage signal, the third current trigger signal
triggered by the user, using the microphone cable of the active noise reduction headset, the
active noise reduction headset And transmitting the third current trigger signal to the terminal by
the active noise reduction headset by using the microphone cable of the active noise reduction
headset, the terminal being , The volume of the audio signal transmitted by the terminal to the
active noise reduction headset is reduced according to the third current trigger signal And
transmitting.
[0009]
According to a second aspect, embodiments of the present invention provide a method for
supplying power to an active noise reduction headset.
The active noise reduction headset is connected to the terminal, the method further comprising
the steps of acquiring by the terminal a signal of the supply voltage provided by the power
supply of the terminal, and acquiring the signal of the first voltage. Processing the signal of the
power supply voltage by the terminal, wherein the power supply voltage is less than the first
voltage, processing the signal of the first voltage to the active noise reduction headset by the
terminal Transmitting the active noise reduction headset to process the signal of the first voltage
to obtain the signal of the second voltage, the signal of the second voltage being transmitted. Is
transmitted to the noise reduction chip of the active noise reduction headset, whereby the noise
reduction chip of the active noise reduction headset performs the noise reduction function Will
be able to acquire the signal of the second voltage, the second voltage comprises less than the
first voltage, and transmitting, a.
[0010]
In a first possible implementation manner of the second aspect, after transmitting the signal of
the first voltage to the active noise reduction headset, the method further comprises a
microphone cable of the active noise reduction headset Receiving, by the terminal, the
transmitted second trigger signal, the second trigger signal being a current generated by the user
by the trigger, receiving, and an active noise reduction headset by the terminal And, by the
terminal, raising the volume of the audio signal sent to the terminal according to the second
current trigger signal.
11-04-2019
4
[0011]
With reference to the second aspect, ie the first possible implementation manner of the second
aspect, in a second possible implementation manner, the signal of the first voltage is transmitted
to the active noise reduction headset After the step, the method further comprises the step of
receiving by the terminal a third current trigger signal transmitted by the microphone cable of
the active noise reduction headset, the third trigger signal being triggered by the user by the
user. The steps of generating and receiving, and reducing the volume of the voice signal
transmitted by the terminal to the active noise reduction headset according to the third current
trigger signal by the terminal.
[0012]
According to a third aspect, an embodiment of the present invention provides an active noise
reduction headset, wherein the active noise reduction headset is connected to the terminal, the
active noise reduction headset is an active noise reduction headset A receiver circuit configured
to receive a signal of a first voltage transmitted by the terminal after being connected to the
terminal, and a signal of the first voltage to obtain a signal of a second voltage A step-down
circuit configured to process, wherein the second voltage is less than the first voltage and a
signal of the second voltage is transmitted to the noise reduction chip of the active noise
reduction headset , The noise reduction chip of the active noise reduction headset includes a
step-down circuit that will be able to obtain a signal of the second voltage to perform the noise
reduction function, the receiver circuit in particular by the terminal The signal of the first voltage
that is signal, configured to receive by using a microphone cable of an active noise reduction
headsets.
[0013]
In a first possible implementation manner of the third aspect, the step-down circuit comprises a
first processing circuit configured to process a signal of a first voltage to obtain a signal of a third
voltage. The third voltage is less than the first voltage and a signal of the third voltage is
transmitted to the chargeable battery of the active noise reduction headset, whereby the
chargeable battery is A first processing circuit capable of storing a voltage signal of 3 and a
second processing circuit configured to process a signal of a third voltage to obtain a signal of a
second voltage The third voltage includes a second processing circuit that is greater than the
second voltage.
[0014]
Referring to the third aspect, ie, the first possible implementation manner of the third aspect, in
11-04-2019
5
the second possible implementation manner, the receiver circuit further comprises a second
current trigger signal triggered by the user. Are configured to be received by using the
microphone cable of the active noise reduction headset, and the active noise reduction headset is
further configured to receive the second noise by using the microphone cable of the active noise
reduction headset. A transmitter circuit configured to transmit a current trigger signal to a
terminal, whereby the terminal can increase the volume of a voice signal transmitted by the
terminal to the active noise reduction headset Including circuits.
[0015]
Referring to the third aspect, ie, any one of the first and second possible implementations of the
third aspect, in the third possible implementation, the receiver circuit further comprises:
Configured to receive a third current trigger signal triggered by the use of the microphone cable
of the active noise reduction headset, the active noise reduction headset further comprising a
microphone of the active noise reduction headset A transmitter circuit configured to transmit a
third current trigger signal to a terminal by using a cable, whereby the terminal is configured to
transmit an audio signal transmitted by the terminal to the active noise reduction headset.
Includes a transmitter circuit that allows the volume to be raised.
[0016]
Referring to the second possible implementation mode of the third aspect, in the fourth possible
implementation mode, the third button switch and the resistor R3, one end of the resistor R3 is
grounded, and the other of the resistor R3 The end is connected in series to a third button switch,
and the third button switch is connected to the microphone cable of the active noise reduction
headset, indicating that the user has triggered the active noise reduction headset If a current
trigger signal is received by using the microphone cable of the active noise reduction headset, a
third button switch is connected to resistor R3.
[0017]
Referring to any of the third and fourth possible implementations which are of the third aspect,
in the fifth possible implementation, the fifth button switch and the resistor R5 One end of the
resistor R5 is connected to ground, the other end of the resistor R5 is connected in series to the
fifth button switch, and the fifth button switch is connected to the microphone cable of the active
noise reduction headset. If a third current trigger signal indicating that the user has triggered the
reduced headset is received by using the microphone cable of the active noise reduction headset,
the fifth button switch is connected to resistor R5 .
[0018]
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6
Referring to the fifth possible implementation manner of the third aspect, in the sixth possible
implementation manner, when the first button switch is connected to the resistor R1, the current
flowing through the resistor R1 is If the third button switch is connected to resistor R3, then the
current flowing through resistor R3 is the second current, and if the fifth button switch is
connected to resistor R5: The current flowing through the resistor R5 is a third current, and the
value of the first current, the value of the second current, and the value of the third current are
different from each other.
[0019]
According to a fourth aspect, an embodiment of the present invention provides a terminal,
wherein the terminal is connected to an active noise reduction headset, and the terminal is
further configured to provide a power supply voltage to the terminal. And a boost circuit
configured to process the signal of the supply voltage of the terminal to obtain a signal of the
first voltage, the supply voltage being less than the first voltage, and the boost circuit further
comprising: Is configured to transmit a signal of the first voltage to the active noise reduction
headset after the sensor is connected to the active noise reduction headset, whereby the active
noise reduction headset is configured to transmit the second voltage. The first voltage signal can
be processed to obtain the first signal, and the second voltage signal is sent to the noise
reduction chip of the active noise reduction headset, thereby actively reducing the noise. Headset
The noise reduction chip is able to obtain a signal of the second voltage to perform the noise
reduction function, the second voltage is less than the first voltage, and the boost circuit boosts
the boost chip. In particular, the input of the boost chip is connected to the output of the power
supply of the terminal, and the output of the boost chip is connected to the microphone cable of
the active noise reduction headset.
[0020]
In a first possible implementation mode of the fourth aspect, the terminal further comprises
processing circuitry configured to receive a second current trigger signal transmitted by the
microphone cable of the active noise reduction headset, The second trigger signal is generated by
the user by the trigger and the processing circuit is further configured to increase the volume of
the audio signal transmitted by the terminal to the active noise reduction headset according to
the second current trigger signal Be done.
[0021]
With reference to the fourth aspect, ie the first possible implementation manner of the fourth
aspect, in the second possible implementation manner, the processing circuit is further
transmitted by the microphone cable of the active noise reduction headset Configured to receive
a third current trigger signal, wherein the third trigger signal is generated by the user by the
11-04-2019
7
trigger and the processing circuit is further configured to transmit the audio signal to the active
noise reduction headset by the terminal. The volume is configured to be reduced according to the
third current trigger signal.
[0022]
According to a fifth aspect, an embodiment of the present invention provides a power supply
system comprising an active noise reduction headset as described above and a terminal as
described above.
[0023]
Embodiments of the present invention provide methods, apparatus and systems for powering an
active noise reduction headset, wherein the method for powering an active noise reduction
headset is transmitted by a terminal Receiving the signal of the first voltage by the active noise
reduction headset, and processing the signal of the first voltage by the active noise reduction
headset to obtain the signal of the second voltage And a second voltage is less than the first
voltage, and a signal of the second voltage is transmitted to the noise reduction chip of the active
noise reduction headset, whereby the active noise reduction headset is The noise reduction chip
is able to obtain a signal of the second voltage to perform the noise reduction function.
Thus, after the active noise reduction headset is connected to the terminal, the active noise
reduction headset may receive the signal of the first voltage transmitted by the terminal and then
the signal of the second voltage. Processing the signal of the first voltage to obtain the signal,
whereby the noise reduction chip of the active noise reduction headset can acquire the signal of
the second voltage to perform the noise reduction function It will be.
Thus, the terminal connected to the active noise reduction headset supplies power to the active
noise reduction headset.
This can effectively solve the problem that the power supply operation of the active noise
reduction headset is very complex.
[0024]
11-04-2019
8
BRIEF DESCRIPTION OF DRAWINGS To describe the technical solutions in the embodiments of
the present invention or in the prior art more clearly, the following briefly describes the
accompanying drawings required for describing the embodiments or the prior art.
Apparently, the attached drawings in the following description merely illustrate some
embodiments of the present invention, and those skilled in the art can further derive other
drawings from these attached drawings without creative efforts. It can.
[0025]
FIG. 5 is a flow chart of a method for powering an active noise reduction headset in accordance
with an embodiment of the present invention.
FIG. 7 is a flowchart of another method for powering an active noise reduction headset in
accordance with an embodiment of the present invention.
7 is a flowchart of yet another method for powering an active noise reduction headset in
accordance with an embodiment of the present invention.
FIG. 1 is a schematic block diagram of an active noise reduction headset in accordance with an
embodiment of the present invention.
FIG. 5 is a schematic block diagram of another active noise reduction headset in accordance with
an embodiment of the present invention.
1 is a schematic block diagram of a step-down circuit according to an embodiment of the present
invention.
FIG. 6 is a schematic block diagram of yet another active noise reduction headset in accordance
with an embodiment of the present invention.
11-04-2019
9
It is a schematic block diagram of the terminal according to embodiment of this invention.
FIG. 5 is a schematic block diagram of another terminal according to an embodiment of the
present invention.
FIG. 1 is a schematic block diagram of a mobile phone according to an embodiment of the
present invention.
FIG. 6 is a schematic block diagram of yet another active noise reduction headset in accordance
with an embodiment of the present invention.
FIG. 6 is a schematic block diagram of yet another active noise reduction headset in accordance
with an embodiment of the present invention. FIG. 5 is a schematic block diagram of another
mobile phone in accordance with an embodiment of the present invention. FIG. 1 is a schematic
block diagram of a power supply system according to an embodiment of the present invention.
FIG. 6 is a schematic block diagram of yet another active noise reduction headset in accordance
with an embodiment of the present invention. FIG. 16 is a schematic block diagram of the dashed
line portion of the active noise reduction headset in FIG. 15; FIG. 6 is a schematic block diagram
of yet another active noise reduction headset in accordance with an embodiment of the present
invention.
[0026]
The following clearly and completely describes the technical solutions in the embodiments of the
present invention with reference to the accompanying drawings in the embodiments of the
present invention. Apparently, the described embodiments are merely a part rather than all of the
embodiments of the present invention. All other embodiments obtained by a person skilled in the
art based on the embodiments of the present invention without creative efforts shall fall within
the protection scope of the present invention.
[0027]
11-04-2019
10
Embodiments of the present invention provide a method for powering an active noise reduction
headset, wherein the active noise reduction headset is connected to a terminal. As illustrated in
FIG. 1, the method includes the following steps.
[0028]
ステップ101。 An active noise reduction headset receives the signal of the first voltage
transmitted by the terminal.
[0029]
The signal of the first voltage transmitted by the terminal may be received by using the
microphone cable of the active noise reduction headset.
[0030]
ステップ102。
An active noise reduction headset processes the signal of the first voltage to obtain a signal of the
second voltage. The second voltage is less than the first voltage.
[0031]
The active noise reduction headset may process the signal of the first voltage directly to obtain
the signal of the second voltage, or the first to obtain the signal of the third voltage. The first
voltage signal may be processed, the third voltage is less than the first voltage, and then the third
voltage signal is sent to the chargeable battery of the active noise reduction headset, This allows
the rechargeable battery to store the signal of the third voltage, the signal of the third voltage is
processed to obtain the signal of the second voltage, and the third voltage is Greater than the
second voltage.
[0032]
ステップ103。
11-04-2019
11
The signal of the second voltage is transmitted to the noise reduction chip of the active noise
reduction headset, whereby the noise reduction chip of the active noise reduction headset
performs the noise reduction function in order to perform the noise reduction function. You will
be able to get the signal of
[0033]
Both the first voltage signal and the first voltage described herein refer to the value of the first
voltage. The signal of the second voltage and the second voltage both refer to the value of the
second voltage. The third voltage signal and the third voltage both refer to the value of the third
voltage. For example, if the first voltage is 2.8 V, then the signal of the first voltage and the first
voltage are both 2.8.
[0034]
Thus, after the active noise reduction headset is connected to the terminal, the active noise
reduction headset may receive the signal of the first voltage transmitted by the terminal and then
the signal of the second voltage. Processing the signal of the first voltage to obtain the signal,
whereby the noise reduction chip of the active noise reduction headset can acquire the signal of
the second voltage to perform the noise reduction function It will be. Thus, the terminal
connected to the active noise reduction headset supplies power to the active noise reduction
headset. This can efficiently solve the problem that the power supply operation of the active
noise reduction headset is very complex.
[0035]
Embodiments of the present invention provide a method for powering an active noise reduction
headset, wherein the active noise reduction headset is connected to a terminal. As illustrated in
FIG. 2, the method includes the following steps.
[0036]
11-04-2019
12
ステップ201。 The terminal obtains a signal of the power supply voltage provided by the power
supply of the terminal.
[0037]
ステップ202。 The terminal processes the signal of the power supply voltage of the terminal to
obtain a signal of the first voltage. The power supply voltage is less than the first voltage.
[0038]
ステップ203。 The terminal transmits a signal of a first voltage to the active noise reduction
headset. This allows the active noise reduction headset to process the signal of the first voltage to
obtain the signal of the second voltage, the signal of the second voltage being the active noise
reduction headset Transmitted to the noise reduction chip of This allows the noise reduction chip
of the active noise reduction headset to obtain a signal of the second voltage to perform the noise
reduction function. The second voltage is less than the first voltage.
[0039]
Thus, after the active noise reduction headset is connected to the terminal, the terminal may
transmit a signal of the first voltage to the active noise reduction headset. After receiving the
signal of the first voltage, the active noise reduction headset processes the signal of the first
voltage to obtain a signal of the second voltage, whereby the active noise reduction headset is
The noise reduction chip is able to obtain a signal of the second voltage to perform the noise
reduction function. Thus, the terminal connected to the active noise reduction headset supplies
power to the active noise reduction headset. This can effectively solve the problem that the
power supply operation of the active noise reduction headset is very complex.
[0040]
Embodiments of the present invention provide a method for powering an active noise reduction
headset, where it is assumed that the terminal is a mobile phone. As illustrated in FIG. 3, the
11-04-2019
13
method includes the following steps.
[0041]
ステップ301。 An active noise reduction headset is connected to the mobile phone.
[0042]
The headset plug of the active noise reduction headset is inserted into the headset jack of the
mobile telephone, such that the active noise reduction headset is connected to the mobile
telephone.
[0043]
In the prior art, the size of the headset plug may be 3.5 mm in four segments.
As illustrated in FIG. 4, there may be two connection methods for the headset plug cable. The
first method is illustrated in FIG. 4-a. It comprises, from left to right, an audio-left channel cable
(L) 1, an audio-right channel cable (R) 2, a microphone cable (MIC) 3, and a ground cable (GND)
4. The second method is illustrated in FIG. 4-a. It comprises, from left to right, an audio-left
channel cable (L) 1, an audio-right channel cable (R) 2, a ground cable (GND) 4 and a microphone
cable (MIC) 3. When an active noise reduction headset is connected to a mobile phone, the pins
of the headset plug of the active noise reduction headset must match the pins of the headset jack
of the mobile phone, thereby The mobile phone connected to the dynamic noise reduction
headset will be able to supply power to the active noise reduction headset.
[0044]
ステップ302。 A mobile phone processes the mobile phone's power supply voltage signal to
obtain a first voltage signal.
[0045]
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14
The mobile phone increases the power supply voltage of the mobile phone's power supply to
obtain the first voltage signal, the first voltage signal being the mobile phone output voltage
signal. In general, the power supply voltage of the mobile phone fluctuates from 3.2V to 4.2V,
and the output voltage of the mobile phone is 5V.
[0046]
ステップ303。 A mobile phone sends a signal of a first voltage to the active noise reduction
headset.
[0047]
The mobile phone transmits a signal of a first voltage to the active noise reduction headset by
using the microphone cable of the active noise reduction headset.
[0048]
ステップ304。
An active noise reduction headset receives a signal of a first voltage transmitted by the mobile
phone.
[0049]
The active noise reduction headset receives the signal of the first voltage transmitted by the
mobile phone by using the microphone cable of the active noise reduction headset.
[0050]
It should be noted that the active noise reduction headset according to the present invention
needs to be an active noise reduction headset with microphone function, ie the active noise
reduction headset has a microphone cable It is.
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15
Thus, the microphone cable of the active noise reduction headset is reused as the power cable of
the active noise reduction headset, and the mobile phone actively reduces noise by using the
microphone cable of the active noise reduction headset Provides power to the headset.
[0051]
ステップ305。 The active noise reduction headset processes the signal of the first voltage to
obtain a signal of the second voltage.
[0052]
The active noise reduction headset can process the signal of the first voltage directly to obtain
the signal of the second voltage, the signal of the second voltage reduces the noise of the active
noise reduction headset The second voltage sent to the chip is less than the first voltage.
[0053]
In particular, first, the active noise reduction headset may process the signal of the first voltage
to obtain a signal of the third voltage, the third voltage being less than the first voltage, and then
, The third voltage signal is sent to the rechargeable battery and the buck chip that are of the
active noise reduction headset so that the rechargeable battery can store the third voltage signal
and buck The chip can then process the signal of the third voltage to obtain the signal of the
second voltage, the third voltage being greater than the second voltage.
Thus, if the active noise reduction headset is further connected to a mobile phone that can not
supply power to the active noise reduction headset, then the active noise reduction headset is
configured to be an active noise reduction headset. Either the electrical energy stored by the
chargeable battery of the active noise reduction headset may be used to supply power, or the
microphone cable of the active noise reduction headset is occupied, ie mobile If the telephone is
in a speech service conversation, after receiving the speech signal, the active noise reduction
headset outputs the received speech signal by using the microphone cable of the active noise
reduction headset Active noise reduction head set, active noise reduction head In order to supply
power to Tsu preparative may use electrical energy stored by the rechargeable battery of an
active noise reduction headsets. Compared to the prior art, the active noise reduction headset
provided in the present invention can obtain electrical energy in real time to perform the noise
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16
reduction function. This may avoid the frequent replacement of dry batteries in the active noise
reduction headset by the power supply required by the active noise reduction headset.
[0054]
ステップ306。 The active noise reduction headset transmits a signal of the second voltage to the
noise reduction chip of the active noise reduction headset.
[0055]
The noise reduction chip of the active noise reduction headset acquires a signal of the second
voltage to perform the noise reduction function.
[0056]
In particular, according to this embodiment of the invention, the microphone cable of the active
noise reduction headset is used as a power cable of the active noise reduction headset, in the
case where the microphone cable of the active noise reduction headset is not occupied A mobile
phone connected to an active noise reduction headset may provide power to the active noise
reduction headset.
[0057]
As an option, a mobile phone connected to the active noise reduction headset may charge the
rechargeable battery of the active noise reduction headset to supply power to the active noise
reduction headset.
This allows the noise reduction chip of the active noise reduction headset to obtain a signal of the
second voltage to perform the noise reduction function.
[0058]
In the case where the microphone cable of the active noise reduction headset is occupied, the
active noise reduction headset may use the signal of the third voltage stored by the chargeable
battery of the active noise reduction headset, By using the electrical energy stored by the
chargeable battery of the active noise reduction headset, power is supplied to the active noise
11-04-2019
17
reduction headset, which causes the noise reduction chip of the active noise reduction headset to
, To perform the noise reduction function, it is possible to obtain a signal of the second voltage.
[0059]
For example, in the case where the microphone cable of the active noise reduction headset is
occupied, such as when the mobile phone is in a speech service conversational state, the
microphone of the active noise reduction headset receives the user's voice signal After that, it
should be noted that the audio signal is output by using the microphone cable of the active noise
reduction headset, so that the microphone cable of the active noise reduction headset is
occupied.
When the microphone cable of the active noise reduction headset is not occupied, for example, if
the mobile phone is in standby or not in a voice service conversation state, the user can hear the
microphone of the active noise reduction headset Refers to the case where you do not use
[0060]
ステップ307。
An active noise reduction headset receives at least one of a first current, a second current, and a
third current flowing through a microphone cable of the active noise reduction headset.
[0061]
The user may press the answer button or the toggle button located on the active noise reduction
headset. As the answer button or switch button Q is pressed, resistor R1 in FIG. 11 and resistor
R2 in FIG. 10 are connected in series, and the active noise reduction headset flows through the
microphone cable of the active noise reduction headset The first current is received by using the
microphone cable of the active noise reduction headset, or the user increases the volume
increase button located on the active noise reduction headset (eg, button Q3 in FIG. 15) The
resistor R3 in FIG. 15 and the resistor R2 in FIG. 10 are connected in series, and the active noise
reduction headset actively transmits the second current flowing through the microphone cable of
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18
the active noise reduction headset. Receive by using the noise reduction headset microphone
cable or Can push the volume reduction button (eg, button Q5 in FIG. 15) disposed in the active
noise reduction headset, and resistor R5 in FIG. 15 and resistor R2 in FIG. The headset receives
the third current flowing through the microphone cable of the active noise reduction headset by
using the microphone cable of the active noise reduction headset.
[0062]
ステップ308。 The active noise reduction headset sends at least one of the first current, the
second current, and the third current to the mobile phone.
[0063]
The active noise reduction headset sends at least one current to the mobile phone by using the
microphone cable of the active noise reduction headset.
[0064]
ステップ309。
The mobile phone receives at least one current.
[0065]
The mobile phone receives at least one current by using the microphone cable of the active noise
reduction headset.
[0066]
ステップ3010。
The mobile phone performs corresponding processing according to the corresponding current.
11-04-2019
19
[0067]
If the mobile phone receives the first current, the mobile phone interrupts or switches the mobile
phone's transmit signal.
[0068]
If the mobile phone receives the second current, the mobile phone increases the volume of the
voice signal transmitted by the mobile phone to the active noise reduction headset.
[0069]
If the mobile phone receives the third current, the mobile phone reduces the volume of the audio
signal sent by the mobile phone to the active noise reduction headset.
[0070]
The mobile telephone interrupts or switches the transmission of the mobile telephone according
to the first current.
This includes but is not limited to aborting or terminating the mobile phone's transmit signal,
which is the data or voice signal transmitted by the mobile phone to the active noise reduction
headset.
[0071]
For example, if the mobile phone is playing a multimedia file such as a song or video, when the
user presses the answer button located on the active noise reduction headset, the active noise
reduction headset actively The first current is received by using the microphone cable of the
noise reduction headset, and then the first current is transmitted to the mobile phone, the mobile
phone playing the song being played according to the received first current Or if you want to
stop or stop the video etc etc, or if the mobile phone is playing multimedia files like songs or
videos, the user presses the toggle button located on the active noise reduction headset And the
active noise reduction headset is configured to actively noise the first current triggered by the
user. Received by using the microphone cable of the headset and then send the first current to
the mobile phone, which mobile phone may switch the song or video etc being played according
11-04-2019
20
to the first current received Alternatively, if the mobile phone receives a call signal in a standby
state, the active noise reduction headset is triggered by the user when the user presses the
answer button located on the active noise reduction headset. A current of 1 is received by using
the microphone cable of the active noise reduction headset, and then a first current is sent to the
mobile phone, which receives the first received call for the incoming call. Answer according to
the current of the mobile phone, or the mobile phone If the user is pressing the answer button
located on the active noise reduction headset, the active noise reduction headset is configured to
receive the first current triggered by the user as a microphone of the active noise reduction
headset. It may be received by using the cable and send a first current to the mobile phone,
which may interrupt the conversation according to the received first current.
The switch button and the answer button may be the same button or two buttons.
[0072]
As an option, the user may further trigger a virtual or physical button of the mobile phone.
After receiving the first current, the mobile phone may interrupt or switch transmissions of the
mobile phone according to the first current. This includes but is not limited to aborting or
terminating the mobile phone's transmit signal, which is the data or voice signal transmitted by
the mobile phone to the active noise reduction headset, or mobile The telephone raises the
volume of the audio signal transmitted by the mobile telephone to the active noise reduction
headset according to the second current received by using the microphone cable of the active
noise reduction headset.
[0073]
For example, if the mobile phone is answering or talking, the user responds by the mobile phone
when the user presses a button that is used to increase the volume of the audio signal sent by the
terminal to the active noise reduction handset The volume of the call being or being made may
be raised accordingly. For another example, a user can play an audio file or video stored on a
mobile phone, or a broadcast program or web television played online using the Internet, using
the mobile phone. When the user presses a button used to increase the volume of the audio
signal sent by the terminal to the active noise reduction headset, the mobile phone plays the
video or audio file stored on the mobile phone The volume may be raised, or the mobile phone
11-04-2019
21
may increase the volume of a broadcast program or web television played online by using the
Internet.
[0074]
As an option, the user may further trigger a virtual or physical button of the mobile phone. After
receiving the second current, the mobile phone may increase the volume of the voice signal
transmitted by the terminal to the active noise reduction headset according to the second
current, or the mobile phone may be active by the terminal The volume of the audio signal sent
to the noise reduction headset is reduced according to the third current received by using the
microphone cable of the active noise reduction headset.
[0075]
For example, if the mobile phone is answering or calling, the user responds by the mobile phone
when the user presses a button used to turn down the volume of the audio signal sent by the
terminal to the active noise reduction headset The volume of the call being or being made may be
reduced accordingly. For another example, the user is playing an audio file or video stored on the
mobile phone by using the mobile phone, or a broadcast program or web television that is played
back online by using the Internet When the user presses a button used to turn down the volume
of the audio signal sent by the terminal to the active noise reduction headset, the mobile phone
plays the playback volume of the video or audio file stored on the mobile phone It can be
lowered or the mobile phone can lower the playback volume of the broadcast program or web
television played online by using the Internet.
[0076]
As an option, the user may further trigger a virtual or physical button of the mobile phone. After
receiving the third current, the mobile telephone may reduce the volume of the voice signal
transmitted by the terminal to the active noise reduction headset according to the third current.
[0077]
ステップ307∼3010は、さらなるオプションである。
11-04-2019
22
[0078]
According to the method for supplying power to the active noise reduction headset provided in
this embodiment of the invention, after the active noise reduction headset is connected to the
mobile telephone, the mobile telephone first Process the mobile phone's power supply voltage
signal to obtain a voltage signal and send the first voltage signal to the active noise reduction
headset, after which the active noise reduction headset is mobile Process the signal of the first
voltage to receive the signal of the first voltage transmitted by the telephone and obtain the
signal of the second voltage, the signal of the second voltage, the active noise reduction head
Transmit to the set of noise reduction chips so that the noise reduction chips of the active noise
reduction headset can obtain a signal of the second voltage to perform the noise reduction
function Become.
The active noise reduction headset may further receive a current flowing through the
microphone cable of the active noise reduction headset after the button of the active noise
reduction headset is pressed, and sends this current to the mobile phone, , The mobile phone
interrupts or switches the mobile phone's transmit signal according to the current (eg, the first
current) or the current used by the user to trigger the mobile phone After receiving, the mobile
phone interrupts or switches the mobile phone's transmit signal according to the first current, or
the mobile phone actively noises by the mobile phone according to the current (e.g. second
current) Reduce the volume of the audio signal sent to the headset, or the mobile phone
According to a third current), reducing the volume of the audio signal to be transmitted to active
noise reducing headsets by the mobile phone. Compared to the prior art, a mobile phone
connected to an active noise reduction headset can supply power to the active noise reduction
headset, whereby the noise reduction chip of the active noise reduction headset noises It will be
possible to implement the reduction function. This can effectively solve the problem that the
power supply operation of the active noise reduction headset is very complex.
[0079]
Embodiments of the present invention provide an active noise reduction headset 40, wherein the
active noise reduction headset is connected to a terminal. As illustrated in FIG. 5, the active noise
reduction headset 40 is configured to receive the signal of the first voltage transmitted by the
terminal, and the signal of the second voltage. And a step-down circuit 402 configured to process
the signal of the first voltage to obtain, the second voltage being less than the first voltage, and
the signal of the second voltage being active. Transmitted to the noise reduction chip of the noise
11-04-2019
23
reduction headset, which allows the noise reduction chip of the active noise reduction headset to
obtain a signal of the second voltage to perform the noise reduction function.
[0080]
Thus, after the active noise reduction headset is connected to the terminal, the active noise
reduction headset may receive the signal of the first voltage transmitted by the terminal and then
the signal of the second voltage. To obtain a signal of the first voltage. This allows the noise
reduction chip of the active noise reduction headset to obtain a signal of the second voltage to
perform the noise reduction function. Thus, the terminal connected to the active noise reduction
headset supplies power to the active noise reduction headset. This can effectively solve the
problem that the power supply operation of the active noise reduction headset is very complex.
[0081]
The receiver circuit 401 is specifically configured to receive the signal of the first voltage
transmitted by the terminal by using the microphone cable of the active noise reduction headset.
[0082]
Receiver circuit 401 may be understood as a microphone cable and / or headset plug of an active
noise reduction headset.
[0083]
The buck circuit 402 includes a buck chip, the input of the buck chip is connected to the
microphone cable of the active noise reduction headset, and the output of the buck chip is the
input of the noise reduction chip of the active noise reduction headset Connected to.
[0084]
In an embodiment, the buck chip is configured to process a received signal of the first voltage
transmitted by the terminal to obtain a signal of the second voltage, the second voltage being the
first voltage Less than.
Then, the signal of the second voltage is transmitted to the noise reduction chip of the active
11-04-2019
24
noise reduction headset, whereby the noise reduction chip of the active noise reduction headset
performs the second noise reduction to perform the noise reduction function. You will be able to
get a signal of
[0085]
In another embodiment, as illustrated in FIG. 6, the step-down circuit 402 is configured to
process the signal of the first voltage to obtain the signal of the third voltage. The circuit 4021
wherein the third voltage is less than the first voltage and a signal of the third voltage is
transmitted to the chargeable battery of the active noise reduction headset, whereby the
chargeable battery is A first processing circuit 4021 capable of storing a signal of a third voltage,
and a third processing circuit configured to process the signal of the third voltage to obtain a
signal of the second voltage A second processing circuit 4022 wherein the third voltage is
greater than the second voltage.
[0086]
The first processing circuit 4021 includes a charging chip, and the second processing circuit
4022 includes a step-down chip.
[0087]
The input end of the charging tip is connected to the microphone cable of the active noise
reduction headset, and one end of the chargeable battery is separately connected to the output
end of the charging tip and the input end of the step-down tip and can be charged The other end
of the battery is grounded and the output of the buck chip is connected to the input of the noise
reduction chip of the active noise reduction headset.
[0088]
The receiver circuit 401 is further configured to receive at least one of the first current, the
second current, and the third current by using the microphone cable of the active noise reduction
headset. Ru.
[0089]
As illustrated in FIG. 7, the active noise reduction headset 40 is further configured with a
transmit circuit 403 configured to send a first current to the terminal by using the microphone
cable of the active noise reduction headset. This allows the terminal to interrupt or switch its
transmit signal according to the first current, the transmit signal being a data signal transmitted
by the terminal to the active noise reduction headset Or a transmit circuit 403 configured to send
11-04-2019
25
a second current to the terminal by using the transmit circuit 403 or the microphone cable of the
active noise reduction headset, which is an audio signal, The terminal can increase the volume of
the audio signal transmitted by the terminal to the active noise reduction headset according to
the second current. Transmitter circuit 403 or transmitter circuit 403 configured to send a third
current to the terminal by using the microphone cable of the active noise reduction headset,
whereby the terminal is A transmitter circuit 403, which allows the volume of the audio signal
transmitted to the active noise reduction headset according to the invention to be reduced
according to the third current.
[0090]
The transmitting circuit 403 is the button switch Q1 and the resistor R1 illustrated in FIG. 15,
one end of the resistor R1 is grounded, the other end of the resistor R1 is connected in series to
the button switch, and the button switch is active noise When connected to the microphone cable
of the reduced headset and the button switch Q1 is pressed, the button switch Q1 is connected to
the resistor R1, and the first current of the active noise reduction headset is the microphone of
the active noise reduction headset Button switch Q1 and resistor R1 received by using a cable,
and button switch Q3 and resistor R3 illustrated in FIG. 15, one end of resistor R3 being
grounded and the other end of resistor R3 being button switch Connected in series, the button
switch Q3 is connected to the microphone cable of the active noise reduction headset and the
button switch Q3 is pressed In the case where the button switch Q3 is connected to the resistor
R3 and the second current of the active noise reduction headset is received by using the
microphone cable of the active noise reduction headset, with the button switch Q3 and the
resistance R3; Or, the button switch Q5 and the resistor R5 illustrated in FIG. 15, one end of the
resistor R5 is grounded, the other end of the resistor R5 is connected in series to the button
switch, and the button switch Q5 is an active noise reduction head When the button switch Q5 is
connected to the microphone cable of the set and the button switch Q5 is connected to the
resistor R5, the first of the active noise reduction headsets is used by using the microphone cable
of the active noise reduction headset And the button switch Q5 and the resistor R5.
Embodiments of the present invention provide a terminal 50, which is connected to an active
noise reduction headset.
As illustrated in FIG. 8, the terminal 50 processes the signal of the power supply voltage of the
terminal in order to obtain a signal of the first voltage and a power supply 501 configured to
provide the power supply voltage to the terminal. And a boost circuit 502 configured as
described above, wherein the power supply voltage is less than the first voltage.
11-04-2019
26
[0091]
The boost circuit 502 is further configured to transmit a signal of the first voltage to the active
noise reduction headset, whereby the active noise reduction headset acquires the signal of the
second voltage, The signal of the first voltage can now be processed and the signal of the second
voltage is sent to the noise reduction chip of the active noise reduction headset, whereby the
noise reduction chip of the active noise reduction headset is To perform the noise reduction
function, a signal of the second voltage can be obtained, the second voltage being less than the
first voltage.
[0092]
Thus, after the active noise reduction headset is connected to the terminal, the terminal may
transmit a signal of the first voltage to the active noise reduction headset.
[0093]
After receiving the signal of the first voltage, the active noise reduction headset processes the
signal of the first voltage to obtain a signal of the second voltage, whereby the active noise
reduction headset is The noise reduction chip is able to obtain a signal of the second voltage to
perform the noise reduction function.
Thus, the terminal connected to the active noise reduction headset supplies power to the active
noise reduction headset.
This can effectively solve the problem that the power supply operation of the active noise
reduction headset is very complex.
[0094]
The boost circuit 502 includes a boost chip, the input of the boost chip is connected to the
output of the terminal's power supply, and the output of the boost chip is connected to the
microphone cable of the active noise reduction headset.
[0095]
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27
As illustrated in FIG. 9, the terminal 50 is further processing circuitry 503 configured to receive a
first current flowing through the microphone cable of the active noise reduction headset, the
answer button or the switch button Since Q is pushed, resistor R1 in FIG. 11 and resistor R2 in
FIG. 10 are connected in series, the active noise reduction headset is the first current flowing
through the microphone cable of the active noise reduction headset Processing circuit 503, or a
processing circuit configured to receive a second current flowing through the microphone cable
of the active noise reduction headset, by using the microphone cable of the active noise reduction
headset Since the answer button or switching button Q3 is pressed, the resistance R3 in FIG.
Resistance R2 is connected in series, and the active noise reduction headset uses the microphone
cable of the active noise reduction headset with the second current flowing through the
microphone cable of the active noise reduction headset Processing circuit 503 or processing
circuit 503 configured to receive a third current flowing through the microphone cable of the
active noise reduction headset, wherein the answer button or switch button Q5 is pressed So that
resistor R5 in FIG. 15 and resistor R2 in FIG. 10 are connected in series, and the active noise
reduction headset actively reduces the third current flowing through the microphone cable of the
active noise reduction headset. Includes processing circuit 503, which is received by using the
headset microphone cable I see.
[0096]
The processing circuit 503 is further configured to interrupt or switch the transmit signal of the
terminal according to the first current, the transmit signal being a data signal or an audio signal
transmitted by the terminal to the active noise reduction headset .
Or, the processing circuit 503 is further configured to increase the volume of the audio signal
transmitted by the terminal to the active noise reduction headset according to the second
current, or the processing circuit 503 is further adapted to increase the active noise by the
terminal The volume of the audio signal sent to the reduced headset is configured to decrease
according to the third current.
[0097]
The processing circuit 503 in FIG. 9 includes the resistor R2 and the comparator in FIG. 10, one
end of the resistor R2 is separately connected to the output end of the boosting chip and the first
input end of the comparator, and the other end of the resistor R2 Are separately connected to the
microphone cable of the active noise reduction headset and to the second input of the
comparator.
11-04-2019
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[0098]
After the terminal receives the different currents transmitted by the microphone cable of the
active noise reduction headset, a comparator obtains different voltage differences by comparing
the voltages at the two ends of the resistor R2, for example It should be noted that different level
signals are obtained according to different voltage differences so that the first level, the second
level and the third level can be obtained.
The terminal may interrupt or switch the transmit signal of the terminal according to the first
level, or may increase the volume of the audio signal transmitted by the terminal to the active
noise reduction headset according to the second level Alternatively, the volume of the audio
signal transmitted by the terminal to the active noise reduction headset may be reduced
according to the third level.
[0099]
When the button Q1 in the active noise reduction headset illustrated in FIG. 15 is pressed, the
resistor R1 in FIG. 15 and the resistor R2 in the mobile telephone illustrated in FIG. 10 are
connected in series, and the terminal is The first noise transmitted by the microphone cable of
the active noise reduction headset and flowing through the microphone cable of the active noise
reduction headset is received.
The voltage difference between the two ends of resistor R2 in FIG. 10 is obtained according to
the first current flowing through resistor R2 in FIG. 10, and this voltage difference is input to
comparator 80 in FIG.
The comparator 80 in FIG. 10 outputs the first level according to the input voltage difference,
and the first level is input to the central processing unit 100 of the mobile telephone, whereby
the central processing unit 100 of the mobile telephone is: To output the first control signal, the
audio multimedia digital signal codec 90 is controlled to control the interruption or switching of
the transmission signal of the terminal, to the headset plug 110 of the active noise reduction
headset first Control signal can be transmitted.
11-04-2019
29
[0100]
When the button Q3 in the active noise reduction headset illustrated in FIG. 15 is pressed, the
resistor R3 in FIG. 15 and the resistor R2 in the mobile telephone illustrated in FIG. 10 are
connected in series, and the terminal is The second current transmitted by the microphone cable
of the active noise reduction headset and flowing through the microphone cable of the active
noise reduction headset is received.
The voltage difference between the two ends of resistor R2 in FIG. 10 is obtained according to
the second current flowing through resistor R2 in FIG. 10, and this voltage difference is input to
comparator 80 in FIG.
The comparator 80 in FIG. 10 outputs the second level according to the input voltage difference,
and the second level is input to the central processing unit 100 of the mobile telephone, whereby
the central processing unit 100 of the mobile telephone is: Active noise reduction so as to control
the audio multimedia digital codec 90 to output a second control signal and to control the
volume increase of the audio signal transmitted by the terminal to the active noise reduction
headset A second control signal can be sent to the headset plug 110 of the headset.
[0101]
When the button Q5 in the active noise reduction headset illustrated in FIG. 15 is pressed, the
resistor R5 in FIG. 15 and the resistor R2 in the mobile telephone illustrated in FIG. 10 are
connected in series, and the terminal is active. A third current transmitted by the microphone
cable of the dynamic noise reduction headset and flowing through the microphone cable of the
active noise reduction headset.
The voltage difference between the two ends of the resistor R2 in FIG. 10 is obtained according
to the third current flowing through the resistor R2 in FIG. 10, and this voltage difference is input
to the comparator 80 in FIG.
The comparator 80 in FIG. 10 outputs the third level according to the input voltage difference,
inputs the third level to the central processing unit 100 of the mobile telephone, and thereby
outputs the third control signal. In addition, the mobile telephone's central processing unit 100
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30
controls the audio multimedia digital signal codec 90 to control the volume reduction of the
speech signal transmitted by the terminal to the active noise reduction headset, so that active
noise A third control signal can be sent to the headset plug 110 of the reduced headset.
[0102]
In the embodiment, typically the terminal is assumed to be a mobile phone, and the cables of the
headset plug of the active noise reduction headset are, in order from left to right, audio-left
channel cable, audio-right channel Cable, ground cable, and microphone cable, the active noise
reduction headset is connected to the mobile phone, ie, the headset plug of the active noise
reduction headset is inserted into the mobile phone headset jack It is assumed that. As illustrated
in FIG. 10, the mobile telephone comprises a power supply 60, a boost chip 70, a resistor R2, a
comparator 80, an audio multimedia digital signal codec 90, a central processing unit 100, ie the
components contained in the dashed box in FIG. including.
[0103]
The power supply 60 is individually connected to the input of the boosting chip 70 and to the
input of the audio multimedia digital signal codec 90, and the end a of the resistor R2 is
connected to the output of the boosting chip 70, the first of the comparator 80 To the second
input of the comparator 80, the output of the comparator 80 is connected to the central
processing unit 100, and the audio multimedia digital signal is connected to the second input of
the comparator 80. The left audio output m of the codec 90 is connected to the audio-left
channel cable 1101 of the headset plug 110 of the active noise reduction headset and the right
audio output n of the audio multimedia digital signal codec 90 is active noise Audio Headset to
Audio Plug-in 110-Right Channel Cable 1102 for Reduced Headset Headset Plug 110 Le signal
codec 90 by using the audio bus I2S, are connected to the central processing unit 100. The
microphone cable 1104 of the headset plug 110 of the active noise reduction headset can be
connected to the headset microphone cable M of the audio multimedia digital signal codec 90 or
it can be connected to the end b of the resistor R2 It should be noted that may be a lithium ion
battery.
[0104]
As shown in FIG. 11, the active noise reduction headset comprises the headset plug 110, the
buck chip 120, the battery 130, the charging chip 140, the noise reduction chip 150, and the left
noise reduction microphone 160 of the active noise reduction headset. , Right noise reduction
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31
microphone 170, left loudspeaker 180, right loudspeaker 190, speech microphone 200, resistor
R1, and button switch Q.
[0105]
The headset plug 110 of the active noise reduction headset includes an audio left channel cable
1101, an audio right channel cable 1102, a ground cable 1103, and a microphone cable 1104.
[0106]
The microphone cable 1104 of the active noise reduction headset is connected to the input end
of the charging chip 140 and one end of the conversation microphone 200, the other end of the
conversation microphone 200 is grounded, and the output end of the charging chip 140 is a
buck chip 120 connected to the input end, the battery 130 is separately connected to the output
end of the charging chip 140 and the input end of the buck chip 120, and the output end of the
buck chip 120 is connected to the noise reduction chip 150, The audio-right channel cable 1102
of the active noise reduction headset is connected to the audio-right channel input end of the
noise reduction chip 150 and the audio-right channel output end of the noise reduction chip 150
is connected to the right loudspeaker 190 Active noise reduction headset audio-left channel cable
1101; noise reduction chip 150 audio-left channel Connected to the power end, the audio-left
channel output end of the noise reduction chip 150 is connected to the left loudspeaker 180, and
the left noise reduction microphone 160 and the right noise reduction microphone 170 are
separately connected to the noise reduction chip 150 The end a of the resistor R1 is grounded
and the end b of the resistor R1 is connected to the microphone cable 1104 of the active noise
reduction headset.
Generally, the battery can be a lithium ion battery, and the voltage of the lithium ion battery
varies from 3.2V to 4.2V.
The size of the headset plug of the active noise reduction headset may be 3.5 mm in four
segments. The mobile phone's power supply is configured to provide power to the mobile phone
and the active noise reduction headset. The power supply of the mobile telephone can provide a
power supply voltage with a voltage range of 3.2V to 4.2V, and it is assumed that the output
voltage of the mobile telephone is 5V. In this embodiment of the invention, the microphone cable
of the active noise reduction headset is used as the power cable of the active noise reduction
headset, and the mobile phone is by using the microphone cable of the active noise reduction
headset It should be noted that the power is supplied to the active noise reduction headset.
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32
[0107]
Active Noise Reduction Headset Microphone Cable In cases where the microphone cable is not
occupied, ie, the mobile phone is in standby or not in voice service conversation, the user uses
the active noise reduction headset microphone In the case where the mobile phone's power
supply voltage is 4V, the user listens to music by using the mobile phone connected to the active
noise reduction headset, and the microphone cable of the active noise reduction headset is:
Connected to the end b of the resistor R2, the boost chip first increases the supply voltage 4V
provided by the mobile phone's power supply to the mobile phone's output voltage 5V and is as
small as possible by using the resistor R2 Perform voltage division on the microphone cable of
the active noise reduction headset Sends a 5V voltage signal to the charging chip of the active
noise reduction headset after voltage division, and then the charging chip charges the battery to
5V voltage after voltage division according to the voltage of the battery It is assumed that
lowering to the voltage to help. After voltage division, the 5V voltage is lowered to 4V voltage,
and the charging chip sends 4V voltage to the battery to charge the battery, and the charging
chip is assumed to send 4V voltage to the buck chip. The buck chip then lowers the 4V voltage to
a voltage that helps supply the power to the noise reduction chip, and the 4V voltage to 1.8V to
power the noise reduction chip, according to the noise reduction chip's power supply
requirements Is assumed.
[0108]
In addition, the central processing unit sends the played music to the audio multimedia digital
signal codec by using the audio bus I2S, and the left audio output m of the audio multimedia
digital signal codec is played back The audio is sent to the audio-left channel output end of the
noise reduction chip by using the audio-left channel cable of the headset plug of the active noise
reduction headset, and the right audio output of the audio multimedia digital signal codec End n
transmits the reproduced music to the audio-right channel output end of the noise reduction chip
by using the audio-right channel cable of the headset plug of the active noise reduction headset,
the noise reduction chip ,left By using Udosupika and right loudspeakers, and transmits the
music. The left noise reduction microphone and the right noise reduction microphone receive
external noise and transmit external noise to the noise reduction chip. The noise reduction chip
handles this noise.
[0109]
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33
In addition, if the user presses the call response button of the active noise reduction headset, a
first current is generated, button switch Q is connected and resistor R1 is connected in series to
resistor R2. Thus, a relatively large current, such as a 100-mA current, flows through resistor R2.
In addition, a relatively large voltage difference is generated between the two ends of the resistor
R2. A comparator takes the voltage at the two ends of the resistor R2 and then compares the
voltages at the two ends of the resistor R2 to obtain the voltage difference and generates an
interrupt signal according to this voltage difference , And send an interrupt signal to the central
processing unit. The central processing unit interrupts or switches the music according to the
interrupt signal. For example, if resistor R1 is connected in series to resistor R2, then resistor R1
is 40 ohms and resistor R2 is 10 ohms, ie 5 divided by 50 ohms, resulting in a current of 0.1 A, It
is assumed that the voltage at the end b of R2 is 4V, the voltage at the end a of the resistor R2 is
5V and the voltage difference between the two ends of the resistor R2 is 1V. Therefore, the
comparator outputs a low level interrupt signal. It should be noted that the resistance of resistor
R2 can not be too large, and resistor R2 can be less than resistor R1. If the value of the resistor
R2 is relatively large, then the voltage divided from the supply voltage of the mobile telephone is
too large. As a result, the mobile phone may not supply power to the active noise reduction
headset.
[0110]
As illustrated in FIG. 15, the difference between the active noise reduction headset illustrated in
FIG. 15 and the active noise reduction headset illustrated in FIG. 11 is that R1 connected in series
in FIG. And Q1 (the circuit connection method is the same as in FIG. 11), the microphone 200 is
further connected in parallel to R3 and switch Q3 connected in series, and R5 and switch Q5
connected in series. It is to be connected by
[0111]
When the user presses the call response button of the active noise reduction headset, the button
switch Q1 is connected and the resistors R1 and R2 are connected in series.
The scheme for performing voltage division by using the resistors R1 and R2 is the same as the
scheme in FIG. After the button switch Q1 is connected, the resistor R1 and the resistor R2 are
connected in series. The level signal output by the comparator 80 and obtained according to the
voltage difference between the two ends of the resistor R2 is at a first level.
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34
[0112]
When the user presses the call answer button of the active noise reduction headset, the button
switch Q3 is connected and the resistors R3 and R2 are connected in series. The scheme for
implementing voltage division by using the resistors R3 and R2 is the same as the one in FIG.
After the button switch Q2 is connected, the resistor R3 and the resistor R2 are connected in
series. The level signal output by the comparator 80 and obtained according to the voltage
difference between the two ends of the resistor R2 is at the second level.
[0113]
Alternatively, if the user triggers the call answer button of the active noise reduction headset,
button switch Q5 is connected and resistors R5 and R2 are connected in series. The scheme for
performing voltage division by using the resistors R5 and R2 is the same as the scheme in FIG.
After the button switch Q3 is connected, the resistor R5 and the resistor R2 are connected in
series. The level signal output by the comparator 80 and obtained according to the voltage
difference between the two ends of the resistor R2 is the third level. The first level, the second
level, and the third level described above may be different from one another.
[0114]
In the case where the microphone cable of the active noise reduction headset is occupied, i.e. by
using the active noise reduction headset, the user is connected to the mobile phone and the
mobile phone is in a voice service conversation state, The microphone cable of the active noise
reduction headset receives the user's voice signal, and then the voice signal is output by using
the microphone cable of the active noise reduction headset, so the microphone of the active noise
reduction headset In the case where the cable is occupied, the microphone cable of the active
noise reduction headset is connected to the headset microphone cable M of the audio multimedia
digital signal codec and the audio multimedia digital signal cable is Send the user's voice to the
deck. Audio multimedia digital signal codec left audio output end m received audio, noise
reduction chip audio-left channel output by using the audio-left channel cable of the active noise
reduction headset headset plug The right audio output end n of the audio multimedia digital
signal codec that transmits to the end of the noise reduction chip by using the audio-right
channel cable of the active noise reduction headset headset plug for the received voice
Transmitting to the audio-right channel output, the noise reduction chip then outputs the
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35
received voice by using the left and right loudspeakers. The left noise reduction microphone and
the right noise reduction microphone receive external noise and transmit external noise to the
noise reduction chip. The noise reduction chip handles this noise. It should be noted that the
noise reduction chip supplies power to the noise reduction chip by using the electrical energy
stored by the battery.
[0115]
By using the electrical energy stored by the battery of the active noise reduction headset if the
active noise reduction headset is connected to a terminal that can not supply power to the active
noise reduction headset It should be noted that power can be supplied to the noise reduction
chip.
[0116]
In particular, since the active noise reduction headset can obtain electrical energy by using a
mobile phone connected to the active noise reduction headset, the battery capacity of the active
noise reduction headset is relatively small It may be designed or active noise reduction headset
may not have a battery.
This causes the volume of the active noise reduction headset to be relatively small. For example,
the battery capacity of the active noise reduction headset may be 20 mA. Compared to the prior
art, a mobile phone connected to an active noise reduction headset can supply power to the
active noise reduction headset, whereby the noise reduction chip of the active noise reduction
headset noises It will be possible to implement the reduction function. This can both solve
efficiently the problem that the power supply operation of the active noise reduction headset is
very complex and improve the appearance of the active noise reduction headset, This makes it
relatively convenient for the user to use and transport, and to provide a relatively high level of
user experience.
[0117]
The cables of the headset plug of the active noise reduction headset according to this
embodiment of the invention, in order from left to right, are audio-left channel cable, audio-right
channel cable, grounding cable, and microphone cable, which are: , Provided for typical
illustration only. In practical applications, there may be other connection methods, but not
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36
limited thereto.
[0118]
In another embodiment, typically based on the description in FIG. 16, FIG. 16 is a circuit diagram
in a dashed box in FIG. R3 is connected in parallel to R4 and switch S1 and R5 is connected in
parallel to R6 and switch S2. The microphone cable 1104 is further connected in series to the
voltage comparator 11. The voltage at one input of the voltage comparator is Vx and the voltage
at the other input of the voltage comparator is Vc. Vx is the charging voltage of the active noise
reduction headset and may generally be 5V. Vc is the voltage provided by the mobile phone's
power supply connected to the active noise reduction headset and may generally be 2.8V. 5Since
V is higher than 2.8 V, the signal output by the voltage comparator connects both switch S1 and
switch S2. In this case, resistors R3 and R4 are connected in parallel. The resistors R5 and R6 are
connected in parallel.
[0119]
When the button Q2 is pressed, the resistor formed by the resistors R3 and R4 connected in
parallel is connected in series to the resistor R2. The level signal output by the comparator 80
and obtained according to the voltage difference between the two ends of the resistor R2 in FIG.
10 is the second level.
[0120]
When the button Q3 is pressed, the resistor formed by the resistors R5 and R6 connected in
parallel is connected in series to the resistor R2. The level signal output by the comparator 80
and obtained according to the voltage difference between the two ends of the resistor R2 in FIG.
10 is the third level.
[0121]
The first level, the second level, and the third level described above may be different from one
another.
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37
[0122]
Two ends of the fixed resistor R3 are connected in parallel to a series connection circuit formed
by the switch S1 and the resistor R4, and two ends of the fixed resistor R5 are formed by the
switch S2 and the resistor R6 Connected in parallel.
Thus, active noise reduction headsets may be compatible with various active noise reduction
headsets that support charging functionality and with various mobile phones with active noise
reduction headsets that do not support charging functionality. And may be compatible with
various mobile phones that do not support active noise reduction headsets. For example, the
active noise reduction headset may be connected to various mobile phones such as Huawei
mobile phone, Xiaomi mobile phone, iPhone (registered trademark), or Samsung mobile phone.
[0123]
In another embodiment, typically based on the description in FIG. 10, the terminal is assumed to
be a mobile phone, and the cables of the headset plug of the active noise reduction headset are,
in order from left to right: An audio-left channel cable, an audio-right channel cable, a ground
cable, and a microphone cable, the active noise reduction headset is connected to the mobile
phone, ie, the headset plug of the active noise reduction headset It is assumed to be inserted into
the headset jack of the mobile phone. The mobile telephone comprises a power supply 60, a
boost chip 70, a resistor R2, a comparator 80, an audio multimedia digital signal codec 90, and a
central processing unit 100.
[0124]
A power supply 60 is separately connected to the input of the boost chip 70 and to the input of
the audio multimedia digital signal codec 90, the end a of the resistor R2 is connected to the first
input of the comparator 80, The end b of R2 is separately connected to the microphone cable
1104 of the active noise reduction headset and to the second input of the comparator 80, the
output of the comparator 80 is connected to the central processing unit 100, the audio The left
audio output m of the multimedia digital signal codec 90 is connected to the audio-left channel
cable 1101 of the headset plug 110 of the active noise reduction headset and the right audio
output n of the audio multimedia digital signal codec 90 is Connected to the audio-right channel
cable 1102 of the headset plug 110 of the active noise reduction headset An audio multimedia
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38
digital signal codec 90 is connected to the central processing unit 100 by using the audio bus
I2S. The microphone cable 1104 of the headset plug 110 of the active noise reduction headset
can be connected to the headset microphone cable M of the audio multimedia digital signal codec
90 or it can be connected to the end b of the resistor R2 It should be noted that may be a lithium
ion battery.
[0125]
As illustrated in FIG. 12, the active noise reduction headset comprises the headset plug 110 of
the active noise reduction headset, the step-down chip 120, the noise reduction chip 150, the left
noise reduction microphone 160, the right noise reduction microphone 170, The left
loudspeaker 180, the right loudspeaker 190, the conversation microphone 200, the resistor R1,
and the button switch Q are included. The headset plug 110 of the active noise reduction headset
includes an audio left channel cable 1101, an audio right channel cable 1102, a ground cable
1103, and a microphone cable 1104.
[0126]
The microphone cable 1104 of the active noise reduction headset is connected to the input end
of the step-down chip 120 and one end of the conversation microphone 200, the other end of the
conversation microphone 200 is grounded, and the output end of the step-down chip 120 is
noise The audio-right channel cable 1102 of the active noise reduction headset connected to the
reduction chip 150 is connected to the audio-right channel input end of the noise reduction chip
150 and the audio-right channel output end of the noise reduction chip 150 is The audio-left
channel cable 1101 of the active noise reduction headset connected to the right loudspeaker 190
is connected to the audio-left channel input end of the noise reduction chip 150 and the audioleft channel output end of the noise reduction chip 150 is , Connected to the left loudspeaker
180, the left noise reduction microphone 160 and the right Is reduced microphone 170 is
connected individually to a noise reduction chip 150, the ends a of the resistor R1 is grounded,
the end b of the resistor R1 is connected to the microphone cable 1104 of active noise reduction
headsets. The size of the headset plug of the active noise reduction headset may be 3.5 mm in
four segments. The mobile phone's power supply is configured to provide power to the mobile
phone and the active noise reduction headset. The power supply of the mobile telephone can
provide the power supply voltage in the voltage range of 3.2V to 4.2V, and it is assumed that the
output voltage of the mobile telephone is 5V. In this embodiment of the invention, the
microphone cable of the active noise reduction headset is used as the power cable of the active
noise reduction headset, and the mobile phone is by using the microphone cable of the active
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39
noise reduction headset It should be noted that power is supplied to the active noise reduction
headset.
[0127]
In the case where the microphone cable of the active noise reduction headset is not occupied, ie
when the mobile phone is in standby or not in a voice service conversation, the user can speak
the microphone of the active noise reduction headset In the unused case, if the mobile phone's
power supply voltage is 4V, the user listens to music by using the mobile phone connected to the
active noise reduction headset and the microphone cable of the active noise reduction headset is
Assuming that it is connected to the end b of the resistor R2, first, the boost chip increases the
4V supply voltage provided by the mobile phone's power supply to the 5V output voltage of the
mobile phone and uses the resistor R2 Perform the voltage division at the minimum possible, and
after the voltage division, the 5 V voltage signal, By using the microphone cable of the active
noise reduction headset, transmit to the buck chip of the active noise reduction headset, then
after the boost chip is voltage divided, 5V voltage noise according to the noise reduction chip's
power supply requirements It is assumed that the voltage of 5 V is lowered to 1.8 V after voltage
division to lower to a voltage which helps to supply power to the reduction chip and to supply
power to the noise reduction chip.
[0128]
In addition, the central processing unit sends the played music to the audio multimedia digital
signal codec by using the audio bus I2S, and the left audio output m of the audio multimedia
digital signal codec is played back The audio is sent to the audio-left channel output end of the
noise reduction chip by using the audio-left channel cable of the headset plug of the active noise
reduction headset, and the right audio output of the audio multimedia digital signal codec End n
transmits the reproduced music to the audio-right channel output end of the noise reduction chip
by using the audio-right channel cable of the headset plug of the active noise reduction headset,
the noise reduction chip ,left Transmitting the music by using the Udosupika and right
loudspeaker.
The left noise reduction microphone and the right noise reduction microphone receive external
noise and transmit external noise to the noise reduction chip. The noise reduction chip handles
this noise.
[0129]
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40
Furthermore, when the user presses the call response button of the active noise reduction
headset, a first current is generated, button switch Q is connected, and resistor R1 is connected
in series to resistor R2. As a result, a relatively large current, such as a 100-mA current, flows
through resistor R2. In addition, a relatively large voltage difference is generated between the
two ends of the resistor R2. The comparator gets the voltage at the two ends of the resistor R2
and then compares the voltage at the two ends of the resistor R2 to get the voltage difference
and generates an interrupt signal according to the voltage difference The embedded signal is sent
to the central processing unit. The central processing unit interrupts or switches the music
according to the interrupt signal. For example, if resistor R1 is connected in series to resistor R2,
then resistor R1 is 40 ohms and resistor R2 is 10 ohms, ie 5 divided by 50 ohms, a current of 0.1
A is taken, the resistor It is assumed that the voltage at the end b of R2 is 4V, the voltage at the
end a of the resistor R2 is 5V and the voltage difference between the two ends of the resistor R2
is 1V. As a result, the comparator outputs a low level interrupt signal, and music switching, music
cancellation, and the like can be performed. It should be noted that the resistance of resistor R2
can not be too large, and resistor R2 can be less than resistor R1. If the value of the resistor R2 is
relatively large, then the voltage divided from the supply voltage of the mobile telephone is too
large. As a result, the mobile phone may not supply power to the active noise reduction headset.
[0130]
As illustrated in FIG. 17, the difference between the active noise reduction headset illustrated in
FIG. 17 and the active noise reduction headset illustrated in FIG. 12 is that R1 and Q1 are in
series in FIG. (In addition to the circuit connection method being the same as in FIG. 11), the
microphone 200 is further connected in series to R3 and Q3 and to R5 and Q5 connected in
series. It is to be connected in parallel.
[0131]
When button Q1 in the active noise reduction headset illustrated in FIG. 17 is pressed, resistor
R1 in FIG. 17 and resistor R2 in the mobile telephone illustrated in FIG. 10 are connected in
series, and the terminal is active noise Receives a first current that is transmitted by the
microphone cable of the reduced headset and flows through the microphone cable of the active
noise reduced headset.
The voltage difference between the two ends of resistor R2 in FIG. 10 is obtained according to
the first current flowing through resistor R2 in FIG. 10, and the voltage difference is input to
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comparator 80 in FIG. The comparator 80 in FIG. 10 outputs the first level according to the input
voltage difference, and the first level is input to the central processing unit 100 of the mobile
telephone, whereby the central processing unit 100 of the mobile telephone is: In order to output
the first control signal, the audio multimedia digital signal codec 90 is controlled to control the
interruption or switching of the transmission signal of the terminal, the first control signal of the
active noise reduction headset It can be sent to the headset plug 110.
[0132]
When the button Q3 in the active noise reduction headset illustrated in FIG. 17 is pressed, the
resistor R3 in FIG. 17 and the resistor R2 in the mobile telephone illustrated in FIG. 10 are
connected in series, and the terminal is The second current transmitted by the microphone cable
of the active noise reduction headset and flowing through the microphone cable of the active
noise reduction headset is received. The voltage difference between the two ends of resistor R2
in FIG. 10 is obtained according to the second current flowing through resistor R2 in FIG. 10, and
the voltage difference is input to comparator 80 in FIG. The comparator 80 in FIG. 10 outputs the
second level according to the input voltage difference, and the second level is input to the central
processing unit 100 of the mobile telephone, whereby the central processing unit 100 of the
mobile telephone Active noise reduction to control the audio multimedia digital signal codec 90
to output a second control signal and to control the volume increase of the audio signal
transmitted by the terminal to the active noise reduction head A second control signal is sent to
the headset plug 110 of the headset.
[0133]
When the button Q5 in the active noise reduction headset illustrated in FIG. 17 is pressed, the
resistor R5 in FIG. 17 and the resistor R2 in the mobile telephone illustrated in FIG. 10 are
connected in series, and the terminal is The third current transmitted by the microphone cable of
the active noise reduction headset and flowing through the microphone cable of the active noise
reduction headset is received. The voltage difference between the two ends of resistor R2 in FIG.
10 is obtained according to the third current flowing through resistor R2 in FIG. 10, and the
voltage difference is input to comparator 80 in FIG. The comparator 80 in FIG. 10 outputs the
third level according to the input voltage difference, and the third level is input to the central
processing unit 100 of the mobile telephone, whereby the central processing unit 100 of the
mobile telephone is: The audio multimedia digital signal codec 90 is controlled to output a third
control signal to control the volume reduction of the audio signal transmitted by the terminal to
the active noise reduction headset, the third Control signals can now be sent to the headset plug
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110 of the active noise reduction headset. The circuit diagram in the dashed box in FIG. 17 may
be similar to the circuit diagram illustrated in FIG.
[0134]
The circuit diagram in the dashed box in FIG. 17 does not include the charging chip 140 and the
battery 130. Other circuit components are similar to those in FIG. 16 and will not be described in
detail here.
[0135]
In the case where the microphone cable of the active noise reduction headset is occupied, ie after
the mobile phone is in a speech service speech state and the microphone of the active noise
reduction headset receives the user's speech signal Since the audio signal is output by using the
microphone cable of the noise reduction headset, in the case where the microphone cable of the
active noise reduction headset is occupied, the microphone cable of the active noise reduction
headset is It is connected to the headset microphone cable M of the audio multimedia digital
signal codec and sends the user's voice to the audio multimedia digital signal codec. Audio
multimedia digital signal codec left audio output end m received audio, noise reduction chip
audio-left channel output by using the audio-left channel cable of the active noise reduction
headset headset plug The right audio output end n of the audio multimedia digital signal codec
that transmits to the end of the noise reduction chip by using the audio-right channel cable of the
active noise reduction headset headset plug for the received voice Transmitting to the audio-right
channel output, the noise reduction chip then outputs the received audio by using the left and
right loudspeakers. In this case, it should be noted that the active noise reduction headset can not
supply power to the noise reduction chip by using a microphone cable.
[0136]
In particular, the active noise reduction headset has no battery, as the active noise reduction
headset can obtain electrical energy by using a mobile phone connected to the active noise
reduction headset The volume of the active noise reduction headset is thereby relatively small.
Compared to the prior art, a mobile phone connected to an active noise reduction headset can
supply power to the active noise reduction headset, whereby the noise reduction chip of the
active noise reduction headset noises It will be possible to implement the reduction function. This
11-04-2019
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can both solve efficiently the problem that the power supply operation of the active noise
reduction headset is very complex and improve the appearance of the active noise reduction
headset, This makes it relatively convenient for the user to use and transport, and to provide a
relatively high level of user experience.
[0137]
The cables of the headset plug of the active noise reduction headset according to this
embodiment of the invention, in order from left to right, are audio-left channel cable, audio-right
channel cable, grounding cable, and microphone cable, which are: , Provided for typical
illustration only. In a realistic application, there may be other connection methods, but it is not
limited here.
[0138]
In yet another embodiment, typically the terminal is assumed to be a mobile phone, and the cable
of the headset plug of the active noise reduction headset is audio-left channel cable, sequentially
from left to right, Audio-right channel cable, grounding cable, and microphone cable, the active
noise reduction headset is connected to the mobile phone, ie the headset plug of the active noise
reduction headset is the mobile phone headset It is assumed that it is inserted into the jack. As
illustrated in FIG. 13, the mobile telephone includes a power supply 60, an audio multimedia
digital signal codec 90, and a central processing unit 100.
[0139]
The power supply 60 is connected to the input of the audio multimedia digital signal codec 90
and the left audio output m of the audio multimedia digital signal codec 90 is an audio-left
channel cable of the headset plug 110 of the active noise reduction headset The right audio
output end n of the audio multimedia digital signal codec 90 connected to 1101 is connected to
the audio-right channel cable 1102 of the headset plug 110 of the active noise reduction headset
by using the audio bus I2S An audio multimedia digital signal codec 90 is connected to the
central processing unit 100 and a headset microphone cable M of the audio multimedia digital
signal codec 90 is of the headset plug 110 of the active noise reduction headset. It is connected
to the microphone cable 1104. The power source may be a lithium ion battery.
11-04-2019
44
[0140]
As shown in FIG. 11, the active noise reduction headset comprises the headset plug 110, the
buck chip 120, the battery 130, the charging chip 140, the noise reduction chip 150, and the left
noise reduction microphone 160 of the active noise reduction headset. , Right noise reduction
microphone 170, left loudspeaker 180, right loudspeaker 190, speech microphone 200, resistor
R1, and button switch Q. The headset plug 110 of the active noise reduction headset includes an
audio left channel cable 1101, an audio right channel cable 1102, a ground cable 1103, and a
microphone cable 1104.
[0141]
The microphone cable 1104 of the active noise reduction headset is connected to the input end
of the charging chip 140 and one end of the conversation microphone 200, the other end of the
conversation microphone 200 is grounded, and the output end of the charging chip 140 is a
buck chip The battery 130 is connected to the output of the charge chip 140 and to the input of
the buck chip 120 separately, and the output of the buck chip 120 is connected to the noise
reduction chip 150, Audio-right channel cable 1102 of the dynamic noise reduction headset is
connected to the audio-right channel input end of the noise reduction chip 150, and the audioright channel output end of the noise reduction chip 150 is connected to the right loudspeaker
190, Active Noise Reduction Headset Audio-Left Channel Cable 1101, Noise Reduction Chip 150
Audio-Left Channel In Connected to the end, the audio-left channel output end of the noise
reduction chip 150 is connected to the left loudspeaker 180, and the left noise reduction
microphone 160 and the right noise reduction microphone 170 are separately connected to the
noise reduction chip 150, The end a of R1 is grounded and the end b of the resistor R1 is
connected to the microphone cable 1104 of the active noise reduction headset. Generally, the
battery can be a lithium ion battery, and the voltage of the lithium ion battery varies from 3.2V to
4.2V. The size of the headset plug of the active noise reduction headset may be 3.5 mm in four
segments.
[0142]
In this embodiment of the invention, the mobile phone can not supply power to the active noise
reduction headset and the battery of the active noise reduction headset stores electrical energy
and the voltage is 4V. It is assumed.
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45
[0143]
When the mobile phone is in standby or not in a voice service conversation, the user is connected
to the active noise reduction headset in cases where the user does not use the microphone of the
active noise reduction headset When listening to music by using a mobile phone, the battery of
the active noise reduction headset sends a 4V voltage to the buck chip, which then drops the 4V
voltage to the noise reduction chip according to the noise reduction chip's power supply
requirements Lower to a voltage that helps to power the
4It is assumed that the V voltage is lowered to 1.8 V to supply power to the noise reduction chip.
[0144]
In addition, the central processing unit sends the played music to the audio multimedia digital
signal codec by using the audio bus I2S, and the left audio output m of the audio multimedia
digital signal codec is played back The audio is sent to the audio-left channel output end of the
noise reduction chip by using the audio-left channel cable of the headset plug of the active noise
reduction headset, and the right audio output of the audio multimedia digital signal codec End n
transmits the reproduced music to the audio-right channel output end of the noise reduction chip
by using the audio-right channel cable of the headset plug of the active noise reduction headset,
the noise reduction chip ,left It sends this music by using Udosupika and right loudspeaker. The
left noise reduction microphone and the right noise reduction microphone receive external noise
and transmit external noise to the noise reduction chip. The noise reduction chip handles this
noise.
[0145]
In the case where the microphone cable of the active noise reduction headset is occupied, i.e. by
using the active noise reduction headset, the user is connected to the mobile phone and the
mobile phone is in a voice service talk state, The active noise reduction headset microphone
cable outputs an audio signal by using the active noise reduction headset microphone cable after
the microphone cable of the active noise reduction headset receives the user's voice signal. In the
case where is occupied, the microphone cable of the active noise reduction headset is connected
to the headset microphone cable M of the audio multimedia digital signal codec and the audio
multimedia digital signal codec is Send the user's voice to the Audio multimedia digital signal
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codec left audio output end m received audio, noise reduction chip audio-left channel output by
using the audio-left channel cable of the active noise reduction headset headset plug The right
audio output end n of the audio multimedia digital signal codec that transmits to the end of the
noise reduction chip by using the audio-right channel cable of the active noise reduction headset
headset plug for the received voice Transmitting to the audio-right channel output, the noise
reduction chip then outputs the received audio by using the left and right loudspeakers. The left
noise reduction microphone and the right noise reduction microphone receive external noise and
transmit external noise to the noise reduction chip. The noise reduction chip handles this noise.
The battery of the active noise reduction headset sends a 4V voltage to the buck chip, which then
lowers the 4V voltage to a voltage that helps deliver power to the noise reduction chip according
to the noise reduction chip's power supply requirements It should be noted. It is assumed that
the 4V voltage is lowered to 1.8V to power the noise reduction chip.
[0146]
In particular, the battery capacity of the active noise reduction headset can be set relatively
small. Thereby, for example, if the battery capacity of the active noise reduction headset can be
20 mA, then the volume of the active noise reduction headset is relatively small. Compared to the
prior art, the battery of the active noise reduction headset supplies power to the noise reduction
chip of the active noise reduction headset, whereby the noise reduction chip of the active noise
reduction headset reduces noise Function can be implemented. This can both solve efficiently the
problem that the power supply operation of the active noise reduction headset is very complex
and improve the appearance of the active noise reduction headset, This makes it relatively
convenient for the user to use and transport, and to provide a relatively high level of user
experience. If the electrical energy of the battery of the active noise reduction headset is
insufficient, the active noise reduction headset may also be connected to a mobile phone that
provides the electrical energy to the active noise reduction headset. Active noise reduction
headsets obtain electrical energy by using a mobile phone to charge the battery of the active
noise reduction headset.
[0147]
The cables of the headset plug of the active noise reduction headset according to this
embodiment of the invention are, from left to right: audio-left channel cable, audio-right channel
cable, grounding cable, and microphone cable, which are: , Provided for typical illustration only.
In a realistic application, there may be other connection methods, but it is not limited here.
11-04-2019
47
[0148]
An active noise reduction headset in accordance with the present invention may be connected to
a mobile phone that can not supply electrical energy to the active noise reduction headset, and
by using the battery of the active noise reduction headset, the active noise reduction headset The
power is supplied to the noise reduction chip of, which causes the noise reduction chip of the
active noise reduction headset to perform the noise reduction function. The active noise
reduction headset can further be connected to a mobile phone that provides electrical energy to
the active noise reduction headset, and by using the mobile phone's electrical energy, to the noise
reduction chip of the active noise reduction headset Power is supplied which allows the noise
reduction chip of the active noise reduction headset to perform a noise reduction function. In
addition, the mobile phone charges the battery of the active noise reduction headset.
Furthermore, after the battery of the active noise reduction headset is fully charged, if the mobile
phone is still connected to the active noise reduction headset, then more power is supplied to the
active noise reduction headset It can be done. In this case, the active noise reduction headset may
supply power to the noise reduction chip of the active noise reduction headset by using the
electrical energy of the battery of the active noise reduction headset or mobile By using the
phone's electrical energy, power can be supplied to the noise reduction chip of the active noise
reduction headset. And the latter is suitable.
[0149]
This reduces battery life as the battery is repeatedly charged by using the mobile phone's
electrical energy when the battery in the active noise reduction headset is fully charged and then
used It can avoid the case. In particular, the active noise reduction headset may not have a
battery, and is directly connected to a mobile phone that provides electrical energy to the active
noise reduction headset.
[0150]
By using the mobile phone's electrical energy, power is provided to the noise reduction chip of
the active noise reduction headset so that the noise reduction chip of the active noise reduction
headset can perform the noise reduction function. Become. The capacity of the battery of the
active noise reduction headset can be set relatively small, whereby, for example, if the capacity of
the battery of the active noise reduction headset can be 20 mA, the volume of the active noise
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48
reduction headset is It should be noted that it is relatively small. This can both solve efficiently
the problem that the power supply operation of the active noise reduction headset is very
complex and improve the appearance of the active noise reduction headset, This makes it
relatively convenient for the user to use and transport, and to provide a relatively high level of
user experience.
[0151]
Embodiments of the present invention provide a power supply system 210. As illustrated in FIG.
14, the power supply system 210 includes an active noise reduction headset 2101 and a
terminal 2102.
[0152]
The terminal 2102 processes the signal of the power supply voltage of the terminal, which is less
than the first voltage, to acquire the signal of the power supply voltage provided by the power
supply of the terminal and to acquire the signal of the first voltage. A signal of the first voltage is
transmitted to the noise reduction headset, whereby the active noise reduction headset processes
the signal of the first voltage to obtain a signal of the second voltage. Signal of the second voltage
is transmitted to the noise reduction chip of the active noise reduction headset, whereby the
noise reduction chip of the active noise reduction headset performs the noise reduction function ,
The second voltage signal can be obtained, the second voltage is less than the first voltage.
[0153]
The active noise reduction headset 2101 is configured to receive the signal of the first voltage
transmitted by the terminal and process the signal of the first voltage to obtain the signal of the
second voltage, The second voltage is less than the first voltage and a signal of the second
voltage is transmitted to the noise reduction chip of the active noise reduction headset, thereby
actively performing the noise reduction function. Noise Reduction The noise reduction chip of the
headset will be able to obtain a signal of the second voltage.
[0154]
According to the method for supplying power to the active noise reduction headset provided in
this embodiment of the invention, after the active noise reduction headset is connected to the
terminal, the terminal is first Process the power supply voltage signal of the terminal to obtain a
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voltage signal and send the signal of the first voltage to the active noise reduction headset, after
which the active noise reduction headset is transmitted by the terminal Processing the signal of
the first voltage to receive the signal of the first voltage of the first voltage, and processing the
signal of the first voltage to obtain the signal of the second voltage, to the noise reduction chip of
the active noise reduction headset, the second voltage , Which allows the noise reduction chip of
the active noise reduction headset to obtain a signal of the second voltage to perform the noise
reduction function.
Compared to the prior art, the terminal connected to the active noise reduction headset can
supply power to the active noise reduction headset, whereby the noise reduction chip of the
active noise reduction headset reduces noise You will be able to perform the function.
This can effectively solve the problem that the power supply operation of the active noise
reduction headset is very complex.
[0155]
For convenient and concise description purposes, reference may be made to corresponding
processing in the method embodiments described above, for detailed processing of the systems,
devices and units described above, which will not be described in detail here It will be clearly
understood by those skilled in the art.
[0156]
It should be understood that, in some embodiments provided herein, the disclosed systems,
devices, and methods may be implemented in other manners.
For example, the described apparatus embodiments are merely exemplary. For example, unit
division is merely logical function division and may be other division in actual implementation.
For example, multiple units or components may be combined or integrated into another system,
or some features may be ignored or not performed. In addition, the displayed or discussed
mutual coupling or direct coupling or communication connection can be implemented via several
interfaces. The indirect coupling or communication connection between the devices or units may
be implemented electrically, mechanically or otherwise.
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[0157]
The units described as separate parts may or may not be physically separate. And, a part
displayed as a unit may or may not be a physical unit arranged at a certain position. Or, it may be
distributed to multiple network units. Some or all of the units may be selected according to actual
needs in order to achieve the purpose of the solution of the embodiment.
[0158]
In addition, functional units in embodiments of the present invention may be integrated into one
processing unit, or each of these units may be physically present alone, or two or more units Are
integrated into one unit. The integrated unit may be implemented in the form of hardware or
may be implemented in the form of a software functional unit.
[0159]
Those skilled in the art will understand that all or part of the steps of the method embodiments
may be implemented by a program instructing relevant hardware. The program may be stored on
a computer readable storage medium. If the program is running, the steps of the method
embodiment are performed. The above-described storage medium includes any medium that can
store program code, such as a ROM, a RAM, a magnetic disk, or an optical disk.
[0160]
The foregoing description is merely a specific embodiment of the present invention and is not
intended to limit the protection scope of the present invention. Within the technical scope
disclosed in the present invention, all variations or substitutions readily understood by one
skilled in the art shall be within the protection scope of the present invention. Accordingly, the
protection scope of the present invention shall be subject to the protection scope of the claims.
[0161]
1 Audio-Left Channel Cable 2 Audio-Right Channel Cable 3 Microphone Cable 4 Ground Cable 11
Voltage Comparator 40 Active Noise Reduction Headset 50 Terminal 60 Power Supply 70 Boost
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Chip 80 Comparator 90 Audio Multimedia Digital Signal Codec 100 Central Processing Unit 110
Headset Plug 120 Step-down chip 130 Battery 140 Charge chip 150 Noise reduction chip 160
Left noise reduction microphone 170 Right noise reduction microphone 180 Left loudspeaker
190 Right loudspeaker 200 Conversational microphone 210 Power supply system 401 Receiver
circuit 402 Step-down circuit 403 Transmission circuit 501 Power supply 502 Step-up circuit
503 Processing circuit 1101 Audio left channel cable 1102 Audio right channel cable 1103
Grounding cable 1104 Microphone cable 2101 Active noise reduction headset 2102 Terminal
4021 First processing Path 4022 second processing circuit
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