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JP2010011080

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2010011080
To provide an electronic device capable of determining what external device is connected to the
device, and to an earphone jack 114 to which an external device capable of inputting an audio
signal is connected, and to the earphone jack 114 And an audio correction unit 116 for
performing processing based on the external device connected to the earphone jack 114, which
is identified by the determination unit 118. [Selected figure] Figure 4
Electronics
[0001]
The present invention relates to an electronic device having a connection portion to which an
external device can be connected.
[0002]
Mobile telephones currently distributed in the market can input voice from an external device
connectable to a mobile telephone such as a bone conduction earphone microphone, a genuine
microphone, or a handsfree telephone.
[0003]
In addition, the external device described above has a circuit such as an audio correction unit
that corrects an input signal of audio, for the purpose of providing an input audio to a
communication partner of the user with an optimal audio, for example. There are many (for
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example, patent document 1).
JP 2002-125298 A
[0004]
However, there has been no method for the mobile phone side to determine what features the
external device connected in the mobile phone has.
Therefore, the control unit having the cellular phone can not perform control according to the
external device.
[0005]
An object of the present invention is to provide an electronic device capable of determining the
type of a connected external device based on an audio signal received from an external device
and performing correction suitable for the external device based on the determination content. It
is.
[0006]
The electronic device according to the present invention is identified by a connection unit to
which an external device that can receive audio and outputs an audio signal can be connected, a
determination unit that can identify an external device connected to the connection unit, and the
determination unit And a correction unit that corrects the audio processing based on the type of
the external device connected to the connection unit.
[0007]
More preferably, the electronic device is characterized in that the correction unit is a sound
correction unit that corrects the sound signal input from the external device through the
connection unit based on the identification by the determination unit. I assume.
[0008]
More preferably, in the electronic device, when the determination unit determines that the
external device includes the external voice correction unit, the voice correction unit suppresses
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correction of the voice signal, and the determination is made. When it is determined by the unit
that the external device does not have an external sound correction unit, correction of the sound
signal is performed.
[0009]
More preferably, the electronic device is characterized in that the determination unit makes a
determination based on an audio signal from the external device via the circuit that supplies
electricity to the external device and the connection unit.
[0010]
According to the present invention, there is provided an electronic device capable of performing
correction suitable for an external device based on the determination content in order to
determine the type of the connected external device based on an audio signal received from the
external device. Is possible.
[0011]
Hereinafter, the best mode for carrying out the present invention will be described using the
drawings.
[0012]
A mobile phone 100 which is an embodiment of an electronic device in the present invention will
be described with reference to FIGS. 1 to 6.
[0013]
FIG. 1 is an external view showing a state in which a headset 200 as an external device is
connected to a cellular phone 100 according to the present embodiment.
2 is a block diagram showing the main configuration of the mobile phone 100, and FIG. 3 and
FIG. 4 are block diagrams when the normal call earphone microphone 201 is connected to the
mobile phone 100 as a headset. FIG. 6 is a block diagram when the bone conduction earphone
microphone 202 is connected to the mobile phone 100 as a headset.
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[0014]
As shown in FIG. 1, the mobile phone 100 is a foldable mobile phone 100 and includes a
rectangular thin first case 101 and a rectangular thin second case 102.
[0015]
An upper end portion of the second housing 102 and a lower end portion of the first housing
101 are openably connected via a hinge mechanism 106.
The portable telephone 100 relatively rotates (rotates) the second housing 102 and the first
housing 101 connected via the hinge mechanism 106 to allow the second housing 102 and the
first housing 101 to be rotated. And the second housing 102 and the first housing 101 can be
folded (folded state).
In the present embodiment, the foldable portable telephone 100 is described as a portable
wireless device, but it is not foldable, and one of the casings is arranged in one direction from a
state in which the two casings 101 and 102 are superimposed. Slide type that is made to slide,
rotary type that makes one of the housings rotate around an axis along the stacking direction,
one that has both housings 101 and 102 connected by a biaxial hinge, and further The display
unit 103 and the operation unit 105 described later may be disposed in one case.
[0016]
As shown in FIG. 1, the first housing 101 is disposed on the inner side which is a surface facing
the second housing 102 in the folded state, and displays various information on the display unit
103, and the voice of the other party of the call And a call speaker 104 for outputting.
[0017]
The first housing 101 houses a circuit board (not shown) inside the front case and the rear case.
A liquid crystal module constituting the display unit 103 is disposed on the surface of the circuit
board.
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The liquid crystal module is stored with the display surface exposed from the front case.
In addition, various electronic components such as speakers are mounted on the circuit board
and electrically connected.
[0018]
In addition, the first housing 101 is provided with a call speaker 113 at the end opposite to the
hinge mechanism 106.
When a call is made by the mobile phone 100, the voice emitted by the other party is transmitted
to the user via the call speaker 113.
[0019]
As shown in FIG. 1, the user of the mobile phone 100 issues an operation unit 105 disposed on
the inner side surface, which is a surface facing the first housing 101 in the folded state, and the
second housing 102 It includes a speech microphone 112 into which sound is input, and a
battery (not shown) in FIG.
The operation unit 105 includes function setting operation buttons for operating various
functions such as various settings, a telephone directory function, and an e-mail function, input
operation buttons for inputting numbers of telephone numbers, characters such as e-mail, and
the like. It is comprised from the determination operation button which performs determination
in operation, scrolling, etc.
[0020]
In addition, the second housing 102 has a communication unit 115 inside.
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The communication unit 115 makes a call with another communication device such as a cellular
phone, and connects with various servers via the Internet network to transmit and receive
various information such as electronic mail.
In addition, the second housing 102 is provided with an earphone jack 114 (connection portion).
The earphone jack 114 is provided in such a manner as to face an opening formed on the side
surface of the second housing 102. Specifically, when the earphone cap is opened, the
connection end of the earphone jack 114 connected to various external devices (not shown) is
provided so as to be exposed to the outside through the opening.
[0021]
As shown in FIG. 1, a headset 200 can be connected to the earphone jack 114. The headset 200
has a connector 204 connected to the earphone jack 114, a cord 201, a headset microphone 202
and a headset speaker 203. The connector 204 is configured to be able to transmit and receive
electrical signals to and from the mobile phone 100 through the earphone jack 114.
[0022]
The headset speaker 203 converts an audio signal input from the mobile phone 100 via the
connector 204 and the cord 201 into audio and outputs the audio.
[0023]
The headset microphone 202 collects the user's voice and converts the voice into an electrical
signal.
Then, the electric signal generated in the headset microphone 202 is transmitted to the voice
correction unit 116 described in detail later via the cord 201, the two connector 04 and the
earphone jack 114.
[0024]
When the connector 204 is connected to the earphone jack 114, the control unit 117, which will
be described in detail later, controls the voice microphone 112 not to collect voice, and the voice
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speaker 113 does not output voice. Controlled by
[0025]
FIG. 2 is a block diagram showing the relationship of main functions of the mobile phone 100. As
shown in FIG.
As described above, the mobile phone 100 includes the display unit 103, the operation unit 105,
the call microphone 112, the call speaker 113, the earphone jack 114, and the communication
unit 115. In addition, the mobile telephone 100 includes an audio correction unit 116, a control
unit 117, a determination unit 118, a microphone bias circuit 119, and a microphone bias
resistor (Rmb 120).
[0026]
The voice correction unit 116 corrects the voice collected by the call microphone 112 or the
headset microphone 202 into a voice suitable for the other party. Specifically, the voice
correction unit 116 raises or lowers the volume of a specific frequency region of the voice
collected from the call microphone 112 or the headset microphone 202 (so-called equalization),
thereby the call microphone 112 or The voice collected from the headset microphone 202 is
corrected to a voice optimal for the other party. Conversely, by equalizing the voice of the other
party received via the communication unit 115, the voice from the other party is corrected to an
optimal voice for the user of the mobile phone 100, and the call speaker 113 or the headset
speaker 203 is corrected. It also has the function of
[0027]
The microphone bias circuit applies a constant power supply voltage to the headset microphone
202 via the Rmb 120 and the cord 201. The Rmb 120 has a function of converting an audio
signal collected by the headset microphone 202 into a signal (voltage signal) due to voltage
fluctuation, and supplying the voltage signal to the audio correction unit 116 and the
determination unit 118.
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[0028]
The determination unit 118 determines the type of the headset 200 connected to the earphone
jack 114 based on the voltage signal generated by the Rmb 120 described above. Details of the
determination unit 118 will be described later with reference to FIGS. 3 and 4.
[0029]
The control unit 117 controls the communication unit 115, controls an image to be displayed on
the display unit 103, and controls, for example, the display of the display unit 103 according to
an input received from the operation unit 105. . Further, when the cord 201 is connected to the
earphone jack 114, control is performed so that the generation of sound by the call speaker 113
and the collection of sound by the call microphone 112 are not performed.
[0030]
In FIG. 3, for example, a headset 300 dedicated to a mobile telephone call, that is, a headset 200
having no function of correcting the sound from the headset microphone 202 in the headset 200
is attached to the earphone jack 114 of the mobile telephone 100. Is a block diagram showing
the situation when
[0031]
The earphone jack 114 of the mobile phone 100 has, for example, a bone-conduction headset
400, that is, a headset 200 having a headset voice correction unit 204 function of correcting the
voice from the headset microphone 202 in the headset 200. It is a block diagram showing a
situation when attached.
[0032]
As shown in FIG. 3, when the headset 200 not having the headset voice correction unit 204 is
connected to the earphone jack 114, the microphone bias circuit 119 does not go through the
headset voice correction unit 204 and the headset The power supply voltage is applied to the
speaker 203.
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Also, as shown in FIG. 4, when the headset 200 having the headset voice correction unit 204 is
connected to the earphone jack 114, the microphone bias circuit 119 transmits the headset via
the headset voice correction unit 204. The power supply voltage is applied to the speaker 203.
Therefore, the voltage value applied to the voice correction unit 116 and the determination unit
118 when the headset 300 not having the headset voice correction unit 204 is connected to the
earphone jack 114 has the headset voice correction unit 204. When the headset 400 is
connected to the earphone jack 114, the voltage becomes lower than the voltage value applied to
the voice correction unit 116 and the determination unit 118.
[0033]
5 shows a voltage signal detected by the determination unit 118 when the headset 300 (a
headset without the headset voice correction unit 204) is connected to the earphone jack 114,
and a headset 400 (headset voice). 15 is a graph in which the voltage signal detected by the
determination unit 118 when the headset having the correction unit 204 is connected to the
earphone jack 114 is arranged. As shown in FIG. 5, the voltage value measured by the
determination unit 118 differs depending on whether the headset connected to the earphone
jack 114 has the headset voice correction unit 204 or not. From the difference in voltage value,
the determination unit 118 determines whether the headset connected to the earphone jack 114
has the headset sound correction unit 204 or not.
[0034]
FIG. 6 is a flowchart showing processing performed by the control unit 117 and the
determination unit 118 when the headset 200 is connected to the earphone jack 114. First, the
control unit 117 detects that the headset is connected to the earphone jack 114 (S601). Next, the
determination unit 118 measures the applied voltage value (S602). The determination unit 118
determines whether the connected headset has the headset sound correction unit 204 based on
the magnitude of the voltage value applied to itself (S603). If the determination unit 118
determines that the headset connected to the earphone jack 114 does not have the headset voice
correction unit 204 as a result of the determination by the determination unit 118 (S603 / Yes),
the determination unit 118 determines that the voice correction unit A control command is
issued to correct the voice from the headset microphone 202 at 116, and the voice correction
unit 116 performs voice correction (S604). If the determination unit 118 determines that the
headset connected to the earphone jack 114 has the headset voice correction unit 204 as a result
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of the determination by the determination unit 118 (S603 / No), the determination unit 118
detects the voice correction unit 116. At the same time, the control command is issued so that
the voice from the headset microphone 202 is not corrected, and the voice correction unit 116
does not perform the voice correction (S605). In the case of S605, the voice correction is
performed in the headset voice correction unit 204.
[0035]
As described above, the mobile phone 100 according to the embodiment of the present invention
can detect the type of circuit.
[0036]
In addition, it is possible to provide an electronic device capable of performing appropriate
correction input from the headset microphone 202.
[0037]
Also, since it is possible to determine whether the microphone having the headset voice
correction unit 204 is connected by the determination unit, voice correction is performed by
both the voice correction unit 116 and the headset voice correction unit 204. It is possible to
prevent doing.
Therefore, it is possible to prevent the excessive correction on the sound collected from the
headset microphone 202.
[0038]
In addition, since the presence or absence of a circuit can be detected by using the microphone
bias circuit 119 conventionally provided in the mobile phone 100, the manufacturer achieves the
above-described effect without separately installing a new part in the mobile phone 100. The
mobile phone 100 can be manufactured.
[0039]
In the present embodiment, an example is shown in which the presence or absence of the
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headset sound correction unit 204 in the headset is detected, but the embodiment of the present
invention is not limited to this.
For example, the cellular phone 100 which is one of the embodiments of the present invention
corresponds to the headset voice correction unit 204 (for example, a resistor having a
predetermined resistance value).
The mobile phone 100 may be capable of determining a manufacturer's genuine product having
a) and an imitation product not having the same.
[0040]
It is an external view which shows a mode that the headset 200 as an external device was
connected to the mobile telephone 100 of this Embodiment. FIG. 2 is a block diagram showing
the relationship of main functions of the mobile phone 100. FIG. 6 is a block diagram showing
the headset 300 connected to the earphone jack 114 of the mobile phone 100. FIG. 5 is a block
diagram showing the headset 400 connected to the earphone jack 114 of the mobile phone 100.
It is a graph which shows the voltage value measured by the determination part 118 in the case
of FIG. 3 and the case of FIG. FIG. 11 is a flowchart showing processing performed by the control
unit 117 and the determination unit 118 when the headset 200 is connected to the earphone
jack 114.
Explanation of sign
[0041]
DESCRIPTION OF SYMBOLS 100 mobile phone 101 first case 102 second case 103 display unit
105 operation unit 106 hinge mechanism 112 call microphone 113 call speaker 114 earphone
jack 115 communication unit 116 voice correction unit 117 control unit 118 determination unit
119 microphone bias circuit 120 Rmb 200 Headset 201 Code 202 Headset Microphone 203
Headset Speaker 204 Headset Audio Correction Unit
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