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DESCRIPTION JP2017528088

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DESCRIPTION JP2017528088
Abstract Embodiments of the present invention provide methods, devices, and systems for
powering active noise reduction headsets, which relate to the field of electronic products,
wherein the power supply operation of the active noise reduction headsets is advanced Solve the
problem of complexity. A method for powering an active noise reduction headset comprises the
steps of receiving a signal of a first voltage transmitted by a terminal and processing the signal of
a first voltage to obtain a signal of a second voltage 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, whereby the active noise reduction is performed. The noise
reduction chip of the headset acquires the signal of the second voltage to perform the noise
reduction function. The methods, devices, and systems for powering active noise reduction
headsets provided in embodiments of the present invention are used to power active noise
reduction headsets.
Method, apparatus and system for powering active noise reduction headsets
[0001]
The present invention relates to the field of electronic products, and in particular to methods,
devices and systems for powering active noise reduction headsets.
[0002]
With the development of electronic technology, the functions of electronic products are
becoming more and more powerful.
11-04-2019
1
Active noise reduction headsets use a noise reduction chip to generate an inverse sound wave
equal to the noise, and use an inverse sound wave of the noise to neutralize the noise, thereby
achieving a noise reduction effect. Active noise reduction headsets include an audio receiver, a
noise reduction chip, and an audio output unit. The noise reduction chip is separately connected
to the audio receiver and the audio output unit, the audio receiver can be a small microphone,
and the audio output unit can be a loudspeaker. After the first audio input signal is a noise signal
and 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 receives the second audio It generates
an input signal and it is assumed that the second audio input signal and the first audio input
signal have the same amplitude and antiphase. 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 invalidated. The purpose of
shielding noise by the active noise reduction headset is thereby achieved. If the noise reduction
chip weakens or nullifies 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, which
supplies power to the noise reduction chip. In addition, the charger provided to charge the
lithium ion battery is configured for an active noise reduction headset. If the noise reduction chip
works 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 lithium ion battery is powered off In
the case, the charger needs to charge a lithium ion battery, whereby the lithium ion battery
supplies power to the noise reduction chip. Thus, the power supply operation of the active noise
reduction headset is highly complex.
[0004]
Embodiments of the present invention provide a method, apparatus, and system for powering an
active noise reduction headset to solve the problem that the power supply operation of the active
noise reduction headset is highly complex. Do.
[0005]
The following technical solutions are used in the embodiments of the present invention to
achieve the above objective.
11-04-2019
2
[0006]
According to a first aspect, there is provided a method for powering an active noise reduction
headset, the active noise reduction headset being connected to a terminal, the method being
transmitted by the terminal by the active noise reduction headset Receiving the signal of the first
voltage and processing the signal of the first voltage to obtain the signal of the second voltage by
the active noise reduction headset, the second voltage being the second voltage A second voltage
signal is sent to the noise reduction chip of the active noise reduction headset, which includes a
step less than a voltage of 1, whereby the noise reduction chip of the active noise reduction
headset has a second voltage Noise signal to obtain To implement the down function.
[0007]
In relation to the first aspect, in a first possible mode of practice, the step of receiving the signal
of the first voltage transmitted by the terminal comprises, by means of an active noise reduction
headset, a microphone cable of an active noise reduction headset Receiving the signal of the first
voltage transmitted by the terminal by using.
[0008]
Processing the signal of the first voltage to obtain the signal of the second voltage in the second
possible implementation manner, in relation to the first possible implementation manner, by the
active noise reduction headset Processing the first voltage signal to obtain a third voltage signal,
the third voltage being less than the first voltage, and the third voltage signal being of the active
noise reduction headset The third voltage signal is processed by the step and active noise
reduction headset sent to the rechargeable battery, whereby the rechargeable battery stores the
third voltage signal, the second voltage signal. Acquiring, wherein the third voltage is greater
than the second voltage.
[0009]
In a third possible mode of implementation, in relation to the first or second mode of possible
implementation, after the step of receiving the signal of the first voltage transmitted by the
terminal, the method comprises an active noise reduction headset Receiving the trigger signal
triggered by the user by using the microphone cable of the active noise reduction headset, and
by using the microphone cable of the active noise reduction headset by the active noise reduction
headset Transmitting the trigger signal to the terminal, whereby the terminal interrupts or
switches the transmission signal of the terminal according to the trigger signal, the transmission
signal being transmitted by the terminal to the active noise reduction headset It is a data signal
or an audio signal, further comprising the step.
11-04-2019
3
[0010]
According to a second aspect, there is provided a method for powering an active noise reduction
headset, wherein the active noise reduction headset is connected to a terminal, the method
comprising: a power supply provided by a terminal power supply by the terminal Obtaining a
voltage signal, and processing the terminal's power supply voltage signal to obtain a first voltage
signal by the terminal, wherein the power supply voltage is less than the first voltage; Sending by
the terminal a signal of a first voltage to the active noise reduction headset, whereby the active
noise reduction headset processes the signal of the first voltage to obtain a signal of the second
voltage The second voltage signal is the noise reduction signal of the active noise reduction
headset. The noise reduction chip of the active noise reduction headset acquires a signal of the
second voltage to perform the noise reduction function, the second voltage being smaller than
the first voltage, and including.
[0011]
In relation to the second aspect, in a first possible implementation manner, after transmitting the
signal of the first voltage to the active noise reduction headset, the method comprises, by the
terminal, a microphone of the active noise reduction headset Receiving the trigger signal
transmitted by the cable, wherein the trigger signal is generated by the user using triggering, and
interrupting or switching the transmission signal of the terminal according to the trigger signal
by the terminal And transmitting the transmitted signal to the active noise reduction headset by
the terminal.
[0012]
According to a third aspect, an active noise reduction headset is provided, the active noise
reduction headset is connected to a terminal, and the active noise reduction headset receives a
signal of a first voltage transmitted by the terminal. And a buck circuit configured to process a
signal of a first voltage to obtain a signal of a second voltage, wherein the second voltage is less
than the first voltage. The circuit and the second voltage signal are transmitted to the noise
reduction chip of the active noise reduction headset, whereby the noise reduction chip of the
active noise reduction headset obtains the signal of the second voltage and noise Implement the
reduction function.
[0013]
In relation to the third aspect, in a first possible implementation manner, the receiver circuit
receives a signal of a first voltage transmitted by the terminal by using a microphone cable of an
active noise reduction headset It is specifically configured to
11-04-2019
4
[0014]
In relation to the first possible implementation mode, in the second possible implementation
mode, the step-down circuit processes the signal of the first voltage to obtain the signal of the
third voltage, and the third voltage is A third voltage signal less than the first voltage is
transmitted to the rechargeable battery of the active noise reduction headset, whereby the
rechargeable battery is configured to store the signal of the third voltage. A second processing
circuit configured to process one processing circuit and a third voltage signal to obtain a second
voltage signal, the third voltage being greater than the second voltage And.
[0015]
In relation to the first possible implementation mode, in the third possible implementation mode,
the buck circuit includes a buck chip, and the input end of the buck chip is connected to the
microphone cable of the active noise reduction headset. The output of the buck chip is connected
to the input of the noise reduction chip of the active noise reduction headset.
[0016]
In relation to the second possible implementation mode, in the fourth possible implementation
mode, the first processing circuit includes a charging chip, and the second processing circuit
includes a step-down chip, and the input end of the charging chip Is connected to the
microphone cable of the active noise reduction headset, and one end of the rechargeable battery
is separately connected to the output of the charging chip and the input of the buck chip, the
other of the rechargeable battery The end of is connected to ground and the output of the buck
chip is connected to the input of the noise reduction chip of the active noise reduction headset.
[0017]
In relation to the first or second possible implementation mode, in a fifth possible
implementation mode, the receiver circuit triggers the user triggered trigger signal by using the
microphone cable of the active noise reduction headset And the active noise reduction headset
sends a trigger signal to the terminal by using the microphone cable of the active noise reduction
headset, whereby the terminal follows the trigger signal according to the trigger signal. The
trigger circuit is further configured to interrupt or switch the transmit signal, the transmit signal
being a data signal or a voice signal transmitted by the terminal to the active noise reduction
headset
[0018]
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5
In relation to the fifth possible implementation mode, in the sixth possible implementation mode,
the trigger circuit includes a button switch and a resistor R1, and one end of the resistor R1 is
connected to the ground. The other end of resistor R1 is connected in series to the button switch,
which is connected to the microphone cable of the active noise reduction headset, allowing the
user to trigger the active noise reduction headset The button switch and resistor R1 are turned
on when a trigger signal indicating that it is received is received by using the microphone cable
of the active noise reduction headset.
[0019]
According to a fourth aspect, a terminal is provided, the terminal is connected to an active noise
reduction headset, and the terminal is configured to provide a power supply voltage to the
terminal and a signal of the power supply voltage of the terminal And processing the voltage
signal to obtain a signal of a first voltage, wherein the power supply voltage is smaller than the
first voltage, and the voltage boosting circuit includes active voltage reduction of the signal of the
first voltage. Transmit to the headset so that the active noise reduction headset processes the
signal of the first voltage to obtain the signal of the second voltage, the signal of the second
voltage is the noise of the active noise reduction headset The noise reduction chip of the active
noise reduction headset is sent to the reduction chip, thereby signaling the second voltage
Obtained by carrying out the noise reduction function, the second voltage is less than the first
voltage, and is further configured to.
[0020]
In relation to the fourth aspect, in a first possible mode of implementation, the booster circuit
comprises a booster chip, the input of the booster chip being connected to the output of the
power supply of the terminal, the output of the booster chip being The end is connected to the
microphone cable of the active noise reduction headset.
[0021]
In relation to the first possible implementation mode, in the second possible implementation
mode, the terminal receives the trigger signal transmitted by the microphone cable of the active
noise reduction headset, the trigger signal using the triggering The trigger circuit further
includes a trigger circuit configured to be generated by the user, wherein the trigger circuit
interrupts or switches the transmission signal of the terminal according to the trigger signal, and
the transmission signal is transmitted by the terminal to the active noise reduction headset It is
further configured to be a data signal or an audio signal.
[0022]
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6
In relation to the second possible implementation mode, in the third possible implementation
mode, the trigger circuit comprises a resistor R2 and a comparator, one end of the resistor R2
being the output end of the boost chip and the comparator The other end of the resistor R2 is
separately connected to the microphone cable of the active noise reduction headset and to the
second input of the comparator.
[0023]
According to a fifth aspect, there is provided a power supply system comprising any of the active
noise reduction headsets described above and any of the terminals described above, the
terminals signaling the supply voltage provided by the power supply of the terminals. And
process the terminal's power supply voltage signal to obtain a first voltage signal, and send the
first voltage signal to the active noise reduction headset when the power supply voltage is less
than the first voltage. , Whereby the active noise reduction headset processes the signal of the
first voltage to obtain the signal of the second voltage, and the signal of the second voltage is
sent to the noise reduction chip of the active noise reduction headset, The noise reduction chip of
the active noise reduction headset thereby gets the signal of the second voltage The noise
reduction function is implemented such that the second voltage is less than the first voltage, and
the active noise reduction headset receives the signal of the first voltage transmitted by the
terminal, Process the signal of voltage 1 to obtain the signal of the second voltage, the second
voltage is smaller than the first voltage, and the signal of the second voltage is on the noise
reduction chip of the active noise reduction headset A noise reduction chip of the active noise
reduction headset being configured to obtain a signal of the second voltage to perform a noise
reduction function.
[0024]
Embodiments of the present invention provide methods, devices, and systems for powering active
noise reduction headsets, wherein the method for powering active noise reduction headsets is by
active noise reduction headsets. Receiving the signal of the first voltage transmitted by the
terminal, and processing the signal of the first voltage to obtain the signal of the second voltage
by the active noise reduction headset, The second voltage signal is sent to the noise reduction
chip of the active noise reduction headset, whereby the voltage reduction signal of the second
circuit is smaller than the first voltage, whereby the noise reduction chip of the active noise
reduction headset is , The second voltage signal Obtained to implement the noise reduction
function.
In this method, after the active noise reduction headset is connected to the terminal, the active
11-04-2019
7
noise reduction headset receives the signal of the first voltage transmitted by the terminal and
then processes the signal of the first voltage Signal of the second voltage can be acquired,
whereby the noise reduction chip of the active noise reduction headset acquires the signal of the
second voltage to perform the noise reduction function, thus the active noise reduction head The
terminals connected to the set power the active noise reduction headset, which can effectively
solve the problem that the power supply operation of the active noise reduction headset is highly
complex.
[0025]
BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly describe the technical solutions
in the embodiments of the present invention or in the prior art, the following briefly simplifies
the accompanying drawings required for describing the embodiments or the prior art Explain to.
Apparently, the attached drawings in the following description show only some embodiments of
the present invention, and a standard engineer in the art still nonetheless without creative
efforts. Other drawings can be derived from these attached drawings.
[0026]
FIG. 5 is a flow chart of a method for powering an active noise reduction headset, according to
one embodiment of the present invention.
7 is a flowchart of another method for powering an active noise reduction headset, according to
one embodiment of the present invention.
7 is a flowchart of yet another method for powering an active noise reduction headset, according
to one embodiment of the present invention.
FIG. 1 is a schematic structural view of an active noise reduction headset according to an
embodiment of the present invention.
11-04-2019
8
FIG. 7 is a schematic structural diagram of another active noise reduction headset according to
an embodiment of the present invention.
FIG. 1 is a schematic structural view of a step-down circuit according to an embodiment of the
present invention.
FIG. 7 is a schematic structural view of still another active noise reduction headset according to
an embodiment of the present invention.
FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present
invention.
FIG. 7 is a schematic structural diagram of another terminal according to an embodiment of the
present invention.
FIG. 1 is a schematic structural view of a mobile phone according to an embodiment of the
present invention.
FIG. 7 is a schematic structural view of still another active noise reduction headset according to
an embodiment of the present invention.
FIG. 7 is a schematic structural view of still another active noise reduction headset according to
an embodiment of the present invention.
FIG. 7 is a schematic structural diagram of another mobile phone according to an embodiment of
the present invention.
FIG. 1 is a schematic structural view of a power supply system according to an embodiment of
the present invention.
[0027]
11-04-2019
9
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 only some, but not all, of the embodiments of the
present invention.
All other embodiments obtained by a standard engineer in the art based on the embodiments of
the present invention without creative efforts are included in the protection scope of the present
invention.
[0028]
One embodiment of the present invention provides a method for powering an active noise
reduction headset, wherein the active noise reduction headset is connected to a terminal.
As shown in FIG. 1, the method comprises the following steps.
[0029]
Step 101: The active noise reduction headset receives the signal of the first voltage transmitted
by the terminal.
[0030]
The signal of the first voltage transmitted by the terminal can be received by using the
microphone cable of the active noise reduction headset.
[0031]
Step 102: The active noise reduction headset processes the signal of the first voltage to obtain a
signal of the second voltage, wherein the second voltage is less than the first voltage.
11-04-2019
10
[0032]
The active noise reduction headset can either process the signal of the first voltage directly to
obtain the signal of the second voltage, or first process the signal of the first voltage to obtain the
third voltage of The signal is acquired, where the third voltage is less than the first voltage, and
the signal of the third voltage is transmitted to the rechargeable battery of the active noise
reduction headset, whereby the rechargeable battery is And the active noise reduction headset
can process the signal of the third voltage to obtain the signal of the second voltage, where the
third voltage is the second voltage. Greater than.
[0033]
Step 103: 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 gets
the signal of the second voltage and the noise reduction function Conduct.
[0034]
In this method, after the active noise reduction headset is connected to the terminal, the active
noise reduction headset receives the signal of the first voltage transmitted by the terminal and
then processes the signal of the first voltage To obtain a signal of the second voltage, whereby
the noise reduction chip of the active noise reduction headset can obtain the signal of the second
voltage to perform the noise reduction function, thus the active noise reduction head The
terminals connected to the set power the active noise reduction headset, which can effectively
solve the problem that the power supply operation of the active noise reduction headset is highly
complex.
[0035]
One embodiment of the present invention provides a method for powering an active noise
reduction headset, wherein the active noise reduction headset is connected to a terminal.
As shown in FIG. 2, the method comprises the following steps.
[0036]
Step 201: The terminal obtains a signal of the power supply voltage provided by the power
supply of the terminal.
11-04-2019
11
[0037]
Step 202: The terminal processes the terminal's power supply voltage signal to obtain a first
voltage signal, where the power supply voltage is less than the first voltage.
[0038]
Step 203: The terminal sends a signal of a first voltage to the active noise reduction headset,
whereby the active noise reduction headset processes the signal of the first voltage to obtain a
signal of the second voltage 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 acquires the signal of the second voltage and performs the noise reduction
function Where the second voltage is less than the first voltage.
[0039]
In this method, the terminal can transmit a signal of a first voltage to the active noise reduction
headset after the active noise reduction headset is connected to the terminal.
After receiving the signal of the first voltage, the active noise reduction headset processes the
signal of the first voltage to obtain the signal of the second voltage, whereby the noise reduction
chip of the active noise reduction headset 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, which is an active noise reduction The
problem that the power supply operation of the headset is highly complex can be effectively
solved.
[0040]
One embodiment of the present invention provides a method for powering an active noise
reduction headset, where it is assumed that the terminal is a mobile phone.
As shown in FIG. 3, the method includes the following steps.
11-04-2019
12
[0041]
Step 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 phone, whereby the active noise reduction headset is connected to the mobile phone.
[0043]
In the prior art, the size of the headset plug can be 3.5 mm with four segments.
As shown in FIG. 4, the cable of the headset plug can have two connection methods, the first
connection method is shown in FIG. 4-a and is continuous from left to right Audio left channel
cable (L) 1, audio right channel cable (R) 2, microphone cable (MIC) 3, and ground cable (GND) 4.
The second connection method is shown in FIG. 4 b, and continuously from left to right, audio
left channel cable (L) 1, audio right channel cable (R) 2, 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, whereby the active noise A mobile phone connected to the reduction headset supplies
power to the active noise reduction headset.
[0044]
Step 302: The mobile phone processes the mobile phone's power supply voltage signal to obtain
a first voltage signal.
[0045]
The mobile phone increases the voltage of the power supply voltage of the mobile phone's power
11-04-2019
13
supply to acquire a signal of a first voltage, and the signal of the first voltage is a signal of the
output voltage of the mobile phone.
Generally, the power supply voltage of the mobile phone ranges from 3.2V to 4.2V, and the
output voltage of the mobile phone is 5V.
[0046]
Step 303: The mobile phone sends a signal of a first voltage to the active noise reduction headset.
[0047]
The mobile phone sends a signal of the first voltage to the active noise reduction headset by
using the microphone cable of the active noise reduction headset.
[0048]
Step 304: The active noise reduction headset receives the signal of the 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]
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 and thus a microphone cable of the active noise reduction headset It should be
noted that is recycled as the power cable of the active noise reduction headset, and the mobile
phone supplies power to the active noise reduction headset by using the microphone cable of the
active noise reduction headset.
[0051]
Step 305: The active noise reduction headset processes the signal of the first voltage to obtain
the signal of the second voltage.
11-04-2019
14
[0052]
The active noise reduction headset can directly process the signal of the first voltage to obtain
the signal of the second voltage, where the signal of the second voltage is the noise reduction of
the active noise reduction headset As transmitted to the chip, the second voltage is less than the
first voltage.
[0053]
In particular, first, the active noise reduction headset processes the signal of the first voltage to
obtain the signal of the third voltage, where the third voltage is less than the first voltage, and
The voltage signal of 3 is sent to the rechargeable battery and buck chip of the active noise
reduction headset, whereby the rechargeable battery stores the signal of the third voltage and
the buck chip processes the signal of the third voltage A second voltage signal can then be
obtained, where the third voltage is greater than the second voltage.
In this way, if the active noise reduction headset is reconnected to a mobile phone that can not
power the active noise reduction headset, then the active noise reduction headset charges the
active noise reduction headset The electrical energy stored by the battery can be used to power
the active noise reduction headset, or when the microphone cable of the active noise reduction
headset is occupied, ie a mobile phone When in an audio service conversational state, after
receiving an audio signal, the Active Noise Reduction Headset will have a microphone cable of
the Active Noise Reduction Headset. The Active Noise Reduction Headset uses the electrical
energy stored by the rechargeable battery of the Active Noise Reduction Headset, while
outputting the received audio signal by using the Active Noise Reduction Headset to It can supply
power.
Compared to the prior art, the active noise reduction headset provided in the present invention
can obtain electrical energy in real time to implement the noise reduction function, which is the
power supply to the active noise reduction headset. In order to avoid frequent replacement of the
active noise reduction headset battery.
[0054]
Step 306: The active noise reduction headset sends a signal of the second voltage to the noise
reduction chip of the active noise reduction headset.
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15
[0055]
The noise reduction chip of the active noise reduction headset acquires the 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 the active noise reduction headset can power the active noise reduction
headset.
Optionally, a mobile phone connected to the active noise reduction headset can charge the
rechargeable battery of the active noise reduction headset and charge the active noise reduction
headset, whereby the active noise reduction head The noise reduction chip of the set acquires the
signal of the second voltage to perform the noise reduction function.
[0057]
In the case where the microphone cable of the active noise reduction headset is occupied, the
active noise reduction headset can use the signal of the third voltage stored by the rechargeable
battery of the active noise reduction headset The active noise reduction headset is powered by
using the electrical energy stored by the rechargeable battery of the active noise reduction
headset, whereby the noise reduction chip of the active noise reduction headset is the second
Obtain a voltage signal and implement the noise reduction function.
[0058]
In the case where the microphone cable of the active noise reduction headset is occupied, for
example, if the mobile phone is in a voice service conversation, after the microphone of the active
noise reduction headset receives the user's voice signal, The microphone cable of the active noise
reduction headset is occupied because the audio signal is output by using the microphone cable
of the active noise reduction headset, and the microphone cable of the active noise reduction
headset is occupied In the case where the user is not in the active state, for example, when the
mobile phone is in the standby state or when the voice service is not in the talking state, In ®
emissions headset case you are not using a microphone, it should be noted that.
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16
[0059]
Step 307: The active noise reduction headset receives a trigger signal triggered by the user.
[0060]
The user can press the response button or toggle button located on the active noise reduction
headset, the active noise reduction headset being triggered by the user by using the microphone
cable of the active noise reduction headset Receive trigger signal.
For example, the user can press the song switching button located on the active noise reduction
headset, and the active noise reduction headset is triggered by the user by using the microphone
cable of the active noise reduction headset Receive trigger signal.
[0061]
Step 308: The active noise reduction headset sends a trigger signal to the mobile phone.
[0062]
The active noise reduction headset sends a trigger signal to the mobile phone by using the
microphone cable of the active noise reduction headset.
[0063]
Step 309: The mobile phone receives a trigger signal.
[0064]
The mobile phone receives the trigger signal by using the microphone cable of the active noise
reduction headset.
[0065]
Step 3010: The mobile phone interrupts or switches the transmission signal of the mobile phone
according to the trigger signal.
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17
[0066]
The cell phone interrupts or switches the cell phone's transmit signal according to the trigger
signal, including, but not limited to, suspending or terminating the cell phone's transmit signal. A
data or voice signal transmitted by the mobile phone to the active noise reduction headset.
[0067]
For example, if the user presses the answer button located on the Active Noise Reduction Headset
while the mobile phone is playing a multimedia file such as a song or video, the Active Noise
Reduction Headset may By using the microphone cable of the active noise reduction headset,
receive the trigger signal triggered by the user and then send the trigger signal to the mobile
phone, which is being played according to the received trigger signal A toggle button that allows
the user to be placed in an active noise reduction headset when the song or video can be paused
or stopped, or when the mobile phone is playing a multimedia file such as a song or video When
pressed, the active noise reduction headset receives the trigger signal triggered by the user by
using the microphone cable of the active noise reduction headset and then sends the trigger
signal to the mobile phone, the mobile phone Can switch the song or video being played
according to the received trigger signal, or the user is placed in the active noise reduction
headset when the mobile phone receives a ringing signal in standby state If the user presses the
answer button, the active noise reduction headset receives a trigger signal triggered by the user
by using the microphone cable of the active noise reduction headset and then The Riga signal can
be sent to the mobile phone, and the mobile phone can respond to the incoming call according to
the received trigger signal, or the user can be active noise when the mobile phone is transmitting
voice signal in conversational state When pressing the response button located on the reduction
headset, the active noise reduction headset receives a trigger signal triggered by the user by
using the microphone cable of the active noise reduction headset and then The trigger signal can
be sent to the mobile phone, the mobile phone can interrupt the conversation according to the
received trigger signal, and the switching button and the response button can be the same button
or two buttons.
[0068]
Optionally, the user can additionally trigger a virtual or physical button on the mobile phone.
After receiving the trigger signal, the cell phone can interrupt or switch the cell phone's transmit
signal according to the trigger signal, including suspending or terminating the cell phone's
transmit signal, Without limitation thereto, the transmit signal is a data or voice signal
transmitted by the mobile phone to the active noise reduction headset.
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18
[0069]
Steps 307-3010 are further optional.
[0070]
According to the method for powering an active noise reduction headset provided in this
embodiment of the present invention, the mobile phone is first mobile after the active noise
reduction headset is connected to the mobile phone. Process the power supply voltage signal of
the phone to obtain a signal of the first voltage, send the signal of the first voltage to the active
noise reduction headset, then the active noise reduction headset was sent by the mobile phone
Receiving the first voltage signal, processing the first voltage signal to obtain a second voltage
signal, and transmitting the second voltage signal to the noise reduction chip of the active noise
reduction headset, The noise reduction chip of the active noise reduction headset is thereby a
second It acquires the pressure signal carrying out the noise reduction function.
The active noise reduction headset can further receive a trigger signal triggered by the user on
the button of the active noise reduction headset and sends the trigger signal to the mobile phone.
After receiving the trigger signal, the mobile phone interrupts or switches the transmission signal
of the mobile phone according to the trigger signal, or after receiving the trigger signal triggered
by the user on the mobile phone, the mobile phone generates the trigger signal The transmission
signal of the mobile phone is interrupted or switched according to.
Compared to the prior art, a mobile phone connected to an active noise reduction headset can
power the active noise reduction headset, whereby the noise reduction chip of the active noise
reduction headset has a noise reduction function This can effectively solve the problem that the
power supply operation of the active noise reduction headset is highly complex.
[0071]
One embodiment of the present invention provides an active noise reduction headset 40, which
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is connected to the terminal.
As shown 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 first voltage. And a step-down
circuit 402 configured to obtain a signal of a second voltage, the second voltage being smaller
than the first voltage.
[0072]
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 acquires the
signal of the second voltage to perform the noise reduction function .
[0073]
In this method, after the active noise reduction headset is connected to the terminal, the active
noise reduction headset receives the signal of the first voltage transmitted by the terminal and
then processes the signal of the first voltage To obtain a signal of the second voltage, whereby
the noise reduction chip of the active noise reduction headset can obtain the signal of the second
voltage to perform the noise reduction function, thus the active noise reduction head The
terminals connected to the set power the active noise reduction headset, which can effectively
solve the problem that the power supply operation of the active noise reduction headset is highly
complex.
[0074]
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.
[0075]
The receiver circuit 401 can be understood as a microphone cable and / or a headset plug of an
active noise reduction headset.
[0076]
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 It is connected to the.
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[0077]
In one embodiment, the buck chip processes a received signal of a first voltage transmitted by
the terminal to obtain a signal of a second voltage, the second voltage being less than the first
voltage , Is configured as.
The signal of the second voltage is then sent to the noise reduction chip of the active noise
reduction headset, whereby the noise reduction chip of the active noise reduction headset
acquires the signal of the second voltage and performs the noise reduction function Do.
[0078]
In another embodiment, as shown in FIG. 6, the step-down circuit 402 processes the signal of the
first voltage to obtain the signal of the third voltage, and the third voltage is the first. A first
voltage, which is smaller than the voltage, is transmitted to the rechargeable battery of the active
noise reduction headset, whereby the rechargeable battery stores the signal of the third voltage.
A processing circuit 4021 and a second processing circuit 4022 configured to process the signal
of the third voltage to obtain the signal of the second voltage, the third voltage being greater
than the second voltage And.
[0079]
The first processing circuit 4021 includes a charging chip, and the second processing circuit
4022 includes a step-down chip.
[0080]
The input of the charging chip is connected to the microphone cable of the active noise reduction
headset, and one end of the rechargeable battery is connected separately to the output of the
charging chip and the input of the buck chip, The other end of the rechargeable battery is
connected to ground, and the output of the buck chip is connected to the input of the noise
reduction chip of the active noise reduction headset.
[0081]
The receiver circuit 401 is further configured to receive a trigger signal triggered by the user by
using the microphone cable of the active noise reduction headset.
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21
[0082]
As shown in FIG. 7, the active noise reduction headset 40 sends a trigger signal to the terminal
by using the microphone cable of the active noise reduction headset, whereby the terminal
follows the trigger signal according to the trigger signal. Further included is a trigger circuit 403
configured to interrupt or switch the transmit signal, the transmit signal being a data signal or a
voice signal to be transmitted by the terminal to the active noise reduction headset.
[0083]
The trigger circuit 403 can include a button switch and a resistor R1, one end of the resistor R1
being connected to ground and the other end of the resistor R1 being connected in series to the
button switch The button switch is connected to the microphone cable of the active noise
reduction headset, and the trigger signal indicating that the user is triggering the active noise
reduction headset is the microphone cable of the active noise reduction headset When received
by using the button switch and the resistor R1 is turned on.
[0084]
One embodiment of the present invention provides a terminal 50, which is connected to an active
noise reduction headset.
As shown in FIG. 8, the terminal 50 processes the signal of the power supply 501 configured to
provide the power supply voltage to the terminal and the power supply voltage of the terminal to
obtain the signal of the first voltage And the booster circuit 502 configured to have the power
supply voltage smaller than the first voltage.
[0085]
The boost circuit 502 sends a signal of a first voltage to the active noise reduction headset,
whereby the active noise reduction headset processes the signal of the first voltage to obtain a
signal of the second voltage, 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 acquires the signal of the second voltage and performs the noise
reduction function And the second voltage is smaller than the first voltage.
[0086]
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22
In this method, the terminal can transmit a signal of a first voltage to the active noise reduction
headset after the active noise reduction headset is connected to the terminal.
After receiving the signal of the first voltage, the active noise reduction headset processes the
signal of the first voltage to obtain the signal of the second voltage, whereby the noise reduction
chip of the active noise reduction headset 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, which is an active noise reduction The
problem that the power supply operation of the headset is highly complex can be effectively
solved.
[0087]
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.
[0088]
As shown in FIG. 9, the terminal 50 is configured to receive the trigger signal transmitted by the
microphone cable of the active noise reduction headset and the trigger signal is generated by the
user using the triggering. The trigger circuit 503 can be further included.
[0089]
The trigger circuit 503 is further configured to interrupt or switch the transmit signal of the
terminal according to the trigger signal, and the transmit signal is a data signal or voice signal
transmitted by the terminal to the active noise reduction headset.
[0090]
The trigger circuit 503 includes a resistor R2 and a comparator, and one end of the resistor R2 is
separately connected to the output of the boost chip and the first input of the comparator, and
the other of the resistor R2 is connected. The ends are separately connected to the microphone
cable of the active noise reduction headset and to the second input of the comparator.
[0091]
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23
After the terminal receives the trigger signal transmitted by the microphone cable of the active
noise reduction headset, the comparator obtains a voltage difference by comparing the voltages
at the two ends of resistor R2 and levels according to the voltage difference It should be noted
that the signal may be acquired and the transmission signal of the terminal may be interrupted or
switched, and the level signal may include high level signal and low level signal.
[0092]
In one embodiment, typically the terminal is assumed to be a mobile phone, and the cable of the
headset plug of the active noise reduction headset continues 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 headset jack of the mobile phone It is assumed that
As shown in FIG. 10, the mobile phone includes 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, ie, a dashed frame in FIG. Contains the components contained within.
[0093]
The power supply 60 is separately connected to the input of the boosting chip 70 and the input
of the audio multimedia digital signal codec 90, and the end a of the resistor R 2 is the output of
the boosting chip 70 and the first of the comparator 80. Of the resistor R2 is connected to the
second input of the comparator 80, and the output of the comparator 80 is connected to the
central processing unit 100. The left audio output end m of the audio 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 end of the audio multimedia digital signal
codec 90 n is an active noise reduction headset It is connected to the audio right channel cable
1102 bets headset plug 110, an audio multimedia 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
connected to the end b of the resistor R2 Note that it can be done and the power supply can be a
lithium ion battery.
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24
[0094]
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, the left
noise reduction microphone 160, of the active noise reduction headset. A right noise reduction
microphone 170, a left loudspeaker 180, a right loudspeaker 190, a speech microphone 200, a
resistor R1, and a button switch Q may be 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.
[0095]
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, and the other end of
the conversation microphone 200 is connected to the ground. The output end of the charge chip
140 is connected to the input end of the step-down chip 120, and the battery 130 is separately
connected to the output end of the charge chip 140 and the input end of the step-down chip 120.
The output end is connected to the noise reduction chip 150, and 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 of the noise reduction chip 150 is The right channel
output end is connected to the right loudspeaker 190, and the audio left channel cable 1101 of
the active noise reduction headset is connected to the audio left channel input end of the noise
reduction chip 150. The audio left channel output end is connected to the left loudspeaker 180,
the left noise reduction microphone 160 and the right noise reduction microphone 170 are
separately connected to the noise reduction chip 150, and the end a of the resistor R1 is ,
Connected to ground, and the end b of resistor R1 is connected to the microphone cable 1104 of
the active noise reduction headset.
In general, the battery can be a lithium ion battery, and the voltage of the lithium ion battery
ranges from 3.2V to 4.2V.
The size of the headset plug of the active noise reduction headset can be 3.5 mm with four
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25
segments.
[0096]
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 phone 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 phone 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
activated by using the microphone cable of the active noise reduction headset It should be noted
that the noise reduction headset is powered.
[0097]
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 voice service conversation, the user uses the
microphone of the active noise reduction headset If not, it is assumed that the user is listening to
music by using a mobile phone connected to the active noise reduction headset, the power
supply voltage of the mobile phone is 4V, and the active noise reduction headset When the
microphone cable is connected to the end b of the resistor R2, the boost chip first boosts the 4V
supply voltage provided by the mobile phone's power supply to the 5V output voltage of the
mobile phone Increase, resistance Perform the lowest possible voltage division by using R2 and
send the 5V voltage signal after voltage division to the charging chip of the active noise
reduction headset by using the microphone cable of the active noise reduction headset Then,
according to the voltage of the battery, the charging chip reduces the voltage of 5 V after voltage
division to a voltage that serves to charge the battery.
The voltage of 5V after voltage division is reduced to a voltage of 4V, the charging chip sends a
voltage of 4V to the battery to charge the battery, and the charging chip is supposed to send a
voltage of 4V to the buck chip .
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The buck chip then reduces the 4V voltage to a voltage that serves to power the noise reduction
chip according to the power supply requirements of the noise reduction chip, and a 4V voltage to
power the noise reduction chip 1 It is assumed to be reduced to .8V.
[0098]
In addition, the central processing unit sends the reproduced 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 has an active noise reduction head Send the played music to the
audio left channel output end of the noise reduction chip by using the audio left channel cable of
the headset plug in the set, the right audio output end n of the audio multimedia digital signal
codec active noise Send the played 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 reduction
headset Noise reduction chip transmits the music by using the left loudspeaker and the 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 processes the noise.
[0099]
Furthermore, if the user has triggered the telephone response button of the active noise
reduction headset, a trigger signal is formed, the button switch Q is connected and the resistor
R1 is connected in series to the resistor R2.
As a result, a relatively large current, for example 100 mA, flows through resistor R2.
In addition, relatively large voltage differences are formed at the two ends of the resistor R2.
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The comparator takes the voltage at the two ends of the resistor R2, then compares the voltages
at the two ends of the resistor R2 to obtain a voltage difference, generates an interrupt signal
according to the voltage difference, and generates an interrupt signal Send to the central
processing unit.
The central processing unit interrupts or switches the music according to the interrupt signal.
For example, assuming that resistor R1 is 40 ohms and resistor R2 is 10 ohms, if resistor R1 is
connected in series to resistor R2, ie, 5 divided by 50 ohms, the current, That is, when acquiring
0.1 A, the voltage at the end b of the resistor R2 is 4 V, the voltage at the end a of the resistor R2
is 5 V, 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.
It should be noted that the resistance of resistor R2 can not be too large, and resistor R2 may be
smaller than resistor R1.
If the value of the resistor R2 is relatively large, the voltage divided from the power supply
voltage of the mobile phone is too large.
As a result, the mobile phone can not supply power to the active noise reduction headset.
[0100]
In the case where the microphone cable of the active noise reduction headset is occupied, ie in
the case where the user is connected to the mobile phone by using the active noise reduction
headset, the mobile phone is While in a conversational state, after the microphone cable of the
active noise reduction headset receives the user's voice signal, the voice signal is activated due to
the output by using the microphone cable of the active noise reduction headset If the noise
reduction headset's microphone cable is occupied, the active noise reduction headset's
microphone cable will Is connected to the headset microphone cables M digital signal codec, and
transmits the user's voice into audio multimedia digital signal codec.
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Left audio output m of audio multimedia digital signal codec sends received voice to audio left
channel output of noise reduction chip by using audio left channel cable of headset plug of active
noise reduction headset And audio right at 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 n the right audio output end of the audio multimedia digital signal codec And
then the noise reduction chip outputs the received sound 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 processes the 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.
[0101]
If the active noise reduction headset is connected to a terminal that can not power the active
noise reduction headset, noise may be generated by using the electrical energy stored by the
battery of the active noise reduction headset It should be noted that power can be supplied to the
reduction chip.
[0102]
In particular, the active noise reduction headset can obtain electrical energy by using a mobile
phone connected to the active noise reduction headset, so the battery capacity of the active noise
reduction headset is relatively small It can be designed or the active noise reduction headset can
have no battery, whereby the volume of the active noise reduction headset is relatively small.
For example, the battery capacity of the active noise reduction headset can be 20 mA.
Compared to the prior art, a mobile phone connected to an active noise reduction headset can
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29
power the active noise reduction headset, whereby the noise reduction chip of the active noise
reduction headset has a noise reduction function Conduct.
This can both effectively solve the problem that the power supply operation of the active noise
reduction headset is highly complex, and improve the appearance of the active noise reduction
headset, thereby It is relatively convenient for the user to use and carry, and the level of user
experience is relatively high.
[0103]
The cables of the headset plug of the active noise reduction headset according to this
embodiment of the invention, from left to right, are the audio left channel cable, the audio right
channel cable, the ground cable, and the microphone cable, which are: It is provided for
illustrative purposes only.
In practical applications, another connection method can exist, which is not limited herein.
[0104]
In another embodiment, typically based on the description in FIG. 10, it is assumed that the
terminal is a mobile phone, and the cable of the headset plug of the active noise reduction
headset is continuous 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 It is assumed that it is
inserted in the headset jack.
The mobile phone 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.
[0105]
The power supply 60 is separately connected to the input of the boosting chip 70 and the input
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of the audio multimedia digital signal codec 90, and the end a of the resistor R2 is connected to
the first input of the comparator 80. The end b of the resistor R2 is separately connected to the
microphone cable 1104 of the active noise reduction headset and to the second input of the
comparator 80, and the output of the comparator 80 is connected to the central processing unit
100 The left audio output end m of the audio 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 of the audio multimedia digital signal codec 90 Auditor The output end n is
connected to the audio right channel cable 1102 of the headset plug 110 of the active noise
reduction headset, and the audio multimedia digital signal codec 90 is connected to the central
processing unit 100 by using the audio bus I2S. It is done.
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
connected to the end b of the resistor R2 Note that it can be done and the power supply can be a
lithium ion battery.
[0106]
As shown in FIG. 12, the active noise reduction headset includes the headset plug 110, the buck
chip 120, the noise reduction chip 150, the left noise reduction microphone 160, the right noise
reduction microphone 170, and the left of the active noise reduction headset. A loudspeaker 180,
a right loudspeaker 190, a speech microphone 200, a resistor R1, and a 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.
[0107]
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, and the other end
of the conversation microphone 200 is connected to the ground. The output end of the stepdown chip 120 is connected to the noise reduction chip 150, and 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, the noise reduction The audio right channel output end of chip 150
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is connected to the right loudspeaker 190 and the audio left channel cable 1101 of the active
noise reduction headset is a noise reduction channel. 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 Connected separately to the
reduction chip 150, the end a of the resistor R1 is connected to ground and the end b of the
resistor R1 is connected to the microphone cable 1104 of the active noise reduction headset .
The size of the headset plug of the active noise reduction headset can be 3.5 mm with four
segments.
[0108]
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 phone 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 phone 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 activated by
using the microphone cable of the active noise reduction headset It should be noted that the
noise reduction headset is powered.
[0109]
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 voice service conversation, the user uses the
microphone of the active noise reduction headset If not, it is assumed that the user is listening to
music by using a mobile phone connected to the active noise reduction headset, the power
supply voltage of the mobile phone is 4V, and the active noise reduction headset When the
microphone cable is connected to the end b of the resistor R2, the boost chip first increases the
4V supply voltage provided by the mobile phone's power supply to the 5V output voltage of the
mobile phone , Resistor R2 Perform the lowest possible voltage division by using and send the
5V voltage signal after voltage division to the step-down chip of the active noise reduction
headset by using the microphone cable of the active noise reduction headset and then The buck
chip reduces the 5V voltage after voltage division to a voltage that helps to power the noise
reduction chip, according to the noise reduction chip's power supply requirements, and the 5V
voltage after voltage division to the noise reduction chip It is assumed to be reduced to 1.8 V to
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supply power.
[0110]
In addition, the central processing unit sends the reproduced 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 has an active noise reduction head Send the played music to the
audio left channel output end of the noise reduction chip by using the audio left channel cable of
the headset plug in the set, the right audio output end n of the audio multimedia digital signal
codec active noise Send the played 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 reduction
headset Noise reduction chip transmits the music by using the left loudspeaker and the 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 processes
the noise.
[0111]
Furthermore, if the user has triggered the telephone response button of the active noise
reduction headset, a trigger signal is formed, the button switch Q is connected and the resistor
R1 is connected in series to the resistor R2. As a result, a relatively large current, for example
100 mA, flows through resistor R2. In addition, relatively large voltage differences are formed at
the two ends of the resistor R2. The comparator takes the voltage at the two ends of the resistor
R2, then compares the voltages at the two ends of the resistor R2 to obtain a voltage difference,
generates an interrupt signal according to the voltage difference, and generates an interrupt
signal Send to the central processing unit. The central processing unit interrupts or switches the
music according to the interrupt signal. For example, assuming that resistor R1 is 40 ohms and
resistor R2 is 10 ohms, if resistor R1 is connected in series to resistor R2, ie, 5 divided by 50
ohms, the current, That is, when acquiring 0.1 A, the voltage at the end b of the resistor R2 is 4
V, the voltage at the end a of the resistor R2 is 5 V, and the voltage difference between the two
ends of the resistor R2 Is 1V. As a result, the comparator can output a low level interrupt signal,
switch songs, pause songs, etc. It should be noted that the resistance of resistor R2 can not be too
large, and resistor R2 may be smaller than resistor R1. If the value of the resistor R2 is relatively
large, the voltage divided from the power supply voltage of the mobile phone is too large. As a
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result, the mobile phone can not supply power to the active noise reduction headset.
[0112]
In the case where the microphone cable of the active noise reduction headset is occupied, ie in
the case where the mobile phone is in a voice service conversation state, after the microphone of
the active noise reduction headset receives the user's voice signal, Active noise reduction headset
microphone if the active noise reduction headset microphone cable is occupied due to the audio
signal being output by using the active noise reduction headset microphone cable The cable is
connected to the headset microphone cable M of the Audio Multimedia Digital Signal Codec, and
the audio of the user is To send to the A digital signal codec. Left audio output m of audio
multimedia digital signal codec sends received voice to audio left channel output of noise
reduction chip by using audio left channel cable of headset plug of active noise reduction headset
And audio right at 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 n the right
audio output end of the audio multimedia digital signal codec And then the noise reduction chip
outputs the received sound by using the left and right loudspeakers. Note that in this case, the
active noise reduction headset can not power the noise reduction chip by using a microphone
cable.
[0113]
In particular, active noise reduction headsets have no battery, as active noise reduction headsets
can obtain electrical energy by using a mobile phone connected to the active noise reduction
headset Is possible, whereby the volume of the active noise reduction headset is relatively small.
Compared to the prior art, a mobile phone connected to an active noise reduction headset can
power the active noise reduction headset, whereby the noise reduction chip of the active noise
reduction headset has a noise reduction function Conduct. This can both effectively solve the
problem that the power supply operation of the active noise reduction headset is highly complex,
and improve the appearance of the active noise reduction headset, thereby It is relatively
convenient for the user to use and carry, and the level of user experience is relatively high.
[0114]
The cables of the headset plug of the active noise reduction headset according to this
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34
embodiment of the invention, from left to right, are the audio left channel cable, the audio right
channel cable, the ground cable, and the microphone cable, which are: It is provided for
illustrative purposes only. In practical applications, another connection method can exist, which
is not limited herein.
[0115]
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, from left to right, an audio left
channel cable, audio The active noise reduction headset, which is the right channel cable, ground
cable, and microphone cable, is connected to the mobile phone, ie, the headset plug of the active
noise reduction headset is inserted into the headset jack of the mobile phone It is assumed that
As shown in FIG. 13, the mobile telephone includes a power supply 60, an audio multimedia
digital signal codec 90, and a central processing unit 100.
[0116]
The power supply 60 is connected to the input end of the audio multimedia digital signal codec
90, and the left audio output end m of the audio multimedia digital signal codec 90 is an audio
left channel cable of an active noise reduction headset headset plug 110 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
and the audio multimedia digital signal codec The audio multimedia digital signal codec 90 is
connected to the central processing unit 100 by using the audio bus I2S. Headset Microphone
cable M is connected to a microphone cable 1104 headset plug 110 of the active noise reduction
headsets. The power source can be a lithium ion battery.
[0117]
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, the left
noise reduction microphone 160, of the active noise reduction headset. A right noise reduction
microphone 170, a left loudspeaker 180, a right loudspeaker 190, a speech microphone 200, a
resistor R1, and a button switch Q may be included. The headset plug 110 of the active noise
reduction headset includes an audio left channel cable 1101, an audio right channel cable 1102,
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a ground cable 1103, and a microphone cable 1104.
[0118]
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, and the other end of
the conversation microphone 200 is connected to the ground. The output end of the charge chip
140 is connected to the input end of the step-down chip 120, and the battery 130 is separately
connected to the output end of the charge chip 140 and the input end of the step-down chip 120.
The output end is connected to the noise reduction chip 150, and 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 of the noise reduction chip 150 is The right channel
output end is connected to the right loudspeaker 190, and the audio left channel cable 1101 of
the active noise reduction headset is connected to the audio left channel input end of the noise
reduction chip 150. The audio left channel output end is connected to the left loudspeaker 180,
the left noise reduction microphone 160 and the right noise reduction microphone 170 are
separately connected to the noise reduction chip 150, and the end a of the resistor R1 is ,
Connected to ground, and the end b of resistor R1 is connected to the microphone cable 1104 of
the active noise reduction headset. In general, the battery can be a lithium ion battery, and the
voltage of the lithium ion battery ranges from 3.2V to 4.2V. The size of the headset plug of the
active noise reduction headset can be 3.5 mm with four segments.
[0119]
In this embodiment of the present invention, it is assumed that the cell 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 Be done.
[0120]
If the user is not using the microphone of the active noise reduction headset when the mobile
phone is in standby or is not in a voice service conversation, the user is connected to the active
noise reduction headset When listening to music by using the phone, the active noise reduction
headset battery sends a 4V voltage to the buck chip, which is then 4V according to the noise
reduction chip's power supply requirements The voltage is reduced to a voltage that serves to
power the noise reduction chip.
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The 4V voltage is assumed to be reduced to 1.8V to power the noise reduction chip.
[0121]
In addition, the central processing unit sends the reproduced 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 has an active noise reduction head Send the played music to the
audio left channel output end of the noise reduction chip by using the audio left channel cable of
the headset plug in the set, the right audio output end n of the audio multimedia digital signal
codec active noise Send the played 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 reduction
headset Noise reduction chip transmits the music by using the left loudspeaker and the 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 processes the noise.
[0122]
In the case where the microphone cable of the active noise reduction headset is occupied, ie in
the case where the user is connected to the mobile phone by using the active noise reduction
headset, the mobile phone is While in a conversational state, after the microphone cable of the
active noise reduction headset receives the user's voice signal, the voice signal is activated due to
the output by using the microphone cable of the active noise reduction headset If the noise
reduction headset's microphone cable is occupied, the active noise reduction headset's
microphone cable will Is connected to the headset microphone cables M digital signal codec, and
transmits the user's voice into audio multimedia digital signal codec. Left audio output m of audio
multimedia digital signal codec sends received voice to audio left channel output of noise
reduction chip by using audio left channel cable of headset plug of active noise reduction headset
And audio right at 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 n the right
audio output end of the audio multimedia digital signal codec And then the noise reduction chip
outputs the received sound 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 processes the noise. The
battery of the active noise reduction headset sends a 4V voltage to the buck chip, which is then a
voltage that serves to power the noise reduction chip, according to the noise reduction chip's
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37
power supply requirements. Please note that the reduction. The 4V voltage is assumed to be
reduced to 1.8V to power the noise reduction chip.
[0123]
In particular, the capacity of the battery of the active noise reduction headset can be designed to
be relatively small, whereby the volume of the active noise reduction headset is relatively small,
for example, of the active noise reduction headset The capacity of the battery can be 20 mA.
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 performs the noise reduction function. This can both
effectively solve the problem that the power supply operation of the active noise reduction
headset is highly complex, and improve the appearance of the active noise reduction headset,
thereby It is relatively convenient for the user to use and carry, and the level of user experience
is relatively high. If the electrical energy of the battery of the active noise reduction headset is
insufficient, the active noise reduction headset can 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 cell phone and charge the battery of the active noise
reduction headset.
[0124]
The cables of the headset plug of the active noise reduction headset according to this
embodiment of the invention, from left to right, are the audio left channel cable, the audio right
channel cable, the ground cable, and the microphone cable, which are: It is provided for
illustrative purposes only. In practical applications, another connection method can exist, which
is not limited herein.
[0125]
The active noise reduction headset according to the present invention can be connected to a
mobile phone that can not provide electrical energy to the active noise reduction headset, and
active noise by using the battery of the active noise reduction headset Power is supplied to the
noise reduction chip of the reduction headset, whereby the noise reduction chip of the active
noise reduction headset performs the noise reduction function. The active noise reduction
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38
headset can be further connected to a mobile phone that provides electrical energy to the active
noise reduction headset, and the noise reduction chip of the active noise reduction headset by
using the mobile phone's electrical energy Power is supplied to the noise reduction chip of the
active noise reduction headset to implement the noise reduction function. In addition, the mobile
phone charges the battery of the active noise reduction headset. Furthermore, if the cell phone is
still connected to the active noise reduction headset after the battery of the active noise
reduction headset is fully charged, more power can be supplied to the active noise reduction
headset It is. In this case, the active noise reduction headset can power the noise reduction chip
of the active noise reduction headset by using the battery's electrical energy of the active noise
reduction headset, or Electrical energy can be used to power the noise reduction chip of the
active noise reduction headset, the latter being preferred. This reduces battery life due to
repeated charging of the battery by using the cell phone's electrical energy when used after the
battery in the active noise reduction headset is fully charged It is possible to avoid the case of
being In particular, the active noise reduction headset may not have a battery and is directly
connected to the mobile phone that provides the electrical energy to the active noise reduction
headset.
By using the mobile phone's electrical energy, the noise reduction chip of the active noise
reduction headset is powered, whereby the noise reduction chip of the active noise reduction
headset performs the noise reduction function. The capacity of the battery of the active noise
reduction headset can be designed to be relatively small, whereby the volume of the active noise
reduction headset is relatively small, for example, of the battery of the active noise reduction
headset It should be noted that the capacity can be 20 mA. This can both effectively solve the
problem that the power supply operation of the active noise reduction headset is highly complex,
and improve the appearance of the active noise reduction headset, thereby It is relatively
convenient for the user to use and carry, and the level of user experience is relatively high.
[0126]
One embodiment of the present invention provides a power supply system 210 that includes an
active noise reduction headset 2101 and a terminal 2102, as shown in FIG.
[0127]
The terminal 2102 obtains the signal of the power supply voltage provided by the power supply
of the terminal, processes the signal of the power supply voltage of the terminal to obtain the
signal of the first voltage, and the power supply voltage is smaller than the first voltage, The
signal of the first voltage is transmitted to the active noise reduction headset, whereby the active
noise reduction headset processes the signal of the first voltage to obtain the signal of the second
voltage, and of the second voltage A signal is sent to the noise reduction chip of the active noise
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reduction headset, whereby the noise reduction chip of the active noise reduction headset
acquires a signal of the second voltage to perform the noise reduction function and the second
voltage Is configured to be smaller than the first voltage.
[0128]
The active noise reduction headset 2101 receives the signal of the first voltage transmitted by
the terminal, processes the signal of the first voltage to obtain the signal of the second voltage,
and the second voltage is the first The second voltage signal, which is smaller than 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 obtains the signal of the second
voltage. It is configured to perform a noise reduction function.
[0129]
According to the method for powering an active noise reduction headset provided in this
embodiment of the invention, the terminal is first powered on after the active noise reduction
headset is connected to the terminal. The voltage signal is processed to obtain a first voltage
signal, and the first voltage signal is sent to the active noise reduction headset, which then
transmits the first voltage signal transmitted by the terminal. Of the first signal, processing the
first voltage signal to obtain the second voltage signal, and transmitting the second voltage signal
to the noise reduction chip of the active noise reduction headset, thereby activating the active
noise Noise reduction chip on the reduction headset gets a signal of the second voltage Te
carrying out 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 has a noise reduction function Implemented, this can effectively
solve the problem that the power supply operation of the active noise reduction headset is highly
complex.
[0130]
For the purpose of convenience and simplicity, it will be appreciated that, with regard to the
detailed functional processes of the aforementioned systems, apparatus and units, reference may
be made to the corresponding processes in the aforementioned method embodiments. It can be
clearly understood by the contractor and will not be described in detail again here.
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[0131]
It should be understood that in some embodiments provided in the present application, the
disclosed systems, devices and methods may be implemented in other manners.
For example, the apparatus embodiments described are merely exemplary.
For example, the division of units is only a logical functional division, and may be another
division in actual implementation.
For example, multiple units or components may be combined or integrated into another system,
or some functions may be ignored or not performed. In addition, the displayed or discussed
mutual couplings or direct couplings or communication connections can be implemented
through several interfaces. The indirect coupling or communication connection between the
devices or units can be implemented in electronic form, mechanical form or in other forms.
[0132]
The units described as separate parts may be physically separate or not physically separate and
the parts labeled as units may be physical units, or It can be not a physical unit, can be located at
one location, or can be distributed over multiple network units. Some or all of the units can be
selected according to the actual needs to achieve the purpose of the solution of the embodiment.
[0133]
In addition, the functional units in the embodiments of the present invention can be integrated
into one processing unit, or each of those units can physically exist 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 hardware in addition to the software functional unit.
[0134]
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It can be understood by one of ordinary skill in the art that all or some of the steps of the method
embodiments can be implemented by a program instructing relevant hardware. The program can
be stored in a computer readable storage medium. When the program runs, the steps of the
method embodiment are performed. The aforementioned storage medium includes any medium
capable of storing program code, such as a ROM, a RAM, a magnetic disk, or an optical disk.
[0135]
The foregoing descriptions are merely specific implementation modes of the present invention,
and are not intended to limit the protection scope of the present invention. Any variant or
substitute that is easily conceived by a person skilled in the art within the technical scope
disclosed in the present invention shall be included in 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.
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