JP2002237870

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DESCRIPTION JP2002237870
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
voice input / output device of a communication device and a communication device, and more
particularly to a voice input / output device of a communication device and a communication
device having a function of outputting stereo voice in a portable telephone.
[0002]
2. Description of the Related Art Heretofore, ringtones of cellular phones and the like are mainly
composed of pattern sounds (pyririly) or melody sounds by single tones. However, in recent
years, a tone generator for generating a ringing tone and a small speaker that can be mounted on
a mobile phone have been developed, and a melody having a plurality of timbres and the number
of simultaneous sounds can also be played. However, these sounds are only monaural sounds.
[0003]
Conventionally, since there is only one receiving section of the portable telephone, there is a
problem that it is not possible to output stereo sound which requires two systems.
[0004]
Therefore, the main object of the present invention is to provide a voice input / output device
and a communication device of a communication device which can hear stereo-generated sound
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with an earphone microphone.
[0005]
SUMMARY OF THE INVENTION The present invention is directed to an audio input of a
communication device capable of making calls by a stereo handset including a monaural handset
or a handset including a transmitter and a handset, a left handset and a right handset. An output
device, wherein the communication device is provided with a plug of a monaural handset and a
jack into which a plug of a stereo handset can be inserted in common.
[0006]
In addition, the plug of the monaural handset includes a transmitter terminal, a receiver terminal,
and a ground terminal, and the plug of the stereo handset is formed longer than the plug of the
monaural handset, and the plug of the monaural handset is One of the left and right handset
terminals is disposed corresponding to the handset terminal of the second one, and the other is
disposed in a long position, and the jack electrically contacts the terminals of the plug of the
stereo handset. It is characterized by including.
[0007]
In addition, the plug of the monaural handset includes a transmitter terminal, a receiver terminal,
and a ground terminal, and the plug of the stereo handset corresponds to the portion where the
ground terminal of the plug of the monaural handset is disposed. One of the terminals and the
ground terminal are arranged, the other of the left and right receiver terminals is arranged
corresponding to the receiver terminal, and the jack includes a terminal electrically contacting
each terminal of the plug of the stereo handset It is characterized by
[0008]
Furthermore, an identification means for discriminating between the monaural handset and the
stereo handset on the jack terminal to which the handset terminal of the stereo handset plug
disposed corresponding to the ground terminal of the monaural handset plug is in contact Are
provided.
[0009]
Furthermore, the identification means is characterized by including an A / D converter for
converting the amplitude of the audio signal inputted to the terminal into a digital signal.
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[0010]
Furthermore, the plug of the stereo handset is provided with a display terminal for representing
the plug, and the jack is provided with an identification terminal with which the display terminal
contacts, and further, the potential change of the jack identification terminal And identification
means for identifying a monophonic handset and a stereophonic handset based on the above.
[0011]
Furthermore, the display terminal is characterized in that the identification terminal is in contact
before the transmission terminal of the plug of the stereo handset contacts the terminal of the
jack.
[0012]
Another invention is a communicator including a jack that can be connected to a handset
including a transmitter, a receiver, and a plug, the jack having a transmitter terminal, a first
receiver terminal, and a second receiver. A terminal and a ground terminal are provided, and it is
characterized in that communication is possible with the plug of the handset inserted in the jack.
[0013]
Furthermore, another invention is a communication device capable of making a call by means of
a stereo handset including a monophone handset including a transmitter and a handset, a left
handset and a right handset, the plug of the mono handset comprising: And a jack into which the
plug of the stereo handset can be inserted in common.
[0014]
In addition, the plug of the monaural handset includes a transmitter terminal, a receiver terminal,
and a ground terminal, and the plug of the stereo handset is formed longer than the plug of the
monaural handset, and the plug of the monaural handset is One of the left and right handset
terminals is disposed corresponding to the handset terminal of the second one, and the other is
disposed in a long position, and the jack electrically contacts the terminals of the plug of the
stereo handset. It is characterized by including.
[0015]
In addition, the plug of the monaural handset includes a transmitter terminal, a receiver terminal
and a ground terminal, and the plug of the stereo handset corresponds to the portion where the
ground terminal of the plug of the monaural handset is disposed. One of the terminals and the
ground terminal are arranged, the other of the left and right receiver terminals is arranged
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corresponding to the receiver terminal, and the jack includes a terminal electrically contacting
each terminal of the plug of the stereo handset It is characterized by
[0016]
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a voice control
unit in a portable telephone according to an embodiment of the present invention, and FIGS. 2
and 3 are stereos for a stereo handset (hereinafter referred to as an earphone microphone). It is a
figure which shows the structure of a jack and a plug, Especially, FIG. 2 shows at the time of plug
insertion, FIG. 3 shows the time of plug non-insertion.
[0017]
In FIG. 1, a DSP I / F 1 transmits transmission data to a digital signal call DSP (not shown) and
receives reception data.
The stereo sound output device 2 outputs stereo sound such as a tone generator.
The A / D converter 3 converts transmission voice from a microphone or the like given from the
stereo jack 12 into a digital signal and gives it to the DSP I / F 1.
The reception voice D / A converter 4 converts the reception voice from the DSP I / F 1 into an
analog signal.
[0018]
The stereo sound output device 2 outputs digital signals of left side channel (hereinafter referred
to as L side) and right side channel (hereinafter referred to as R side) of stereo, and the digital
signal of L side is analog signal by the D / A converter 5 The digital signal on the R side is
converted to an analog signal by the D / A converter 6.
The converted analog signals are applied to summing amplifiers 7 and 8, respectively.
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The summing amplifier 7 superposes the analog signal of the reception voice output from the
reception voice D / A converter 4 and the analog signal on the L side output from the L side voice
D / A converter 5 for stereo, and outputs the same. Output to 9
The summing amplifier 8 superimposes the analog signal of the receiving voice output from the
D / A converter 4 for receiving voice and the analog signal of R side output from the R-side audio
D / A converter 6 for stereo, and an output amplifier Give to nine.
[0019]
The output amplifier 9 outputs received voice and stereo sound to the earphone microphone and
the receiver 11 inside the mobile phone, and outputs the output from the summing amplifier 7
and the output from the summing amplifier 8 as it is, and the summing amplifier Only the output
of 7 can be differentially output.
Connected to the stereo jack 12 are a transmitting microphone 10 and a receiving voice output
receiver 11.
[0020]
As shown in FIG. 2, in the plug of the earphone microphone used in the embodiment of the
present invention, the terminals are arranged in the order of the transmitting terminal, the L side
audio terminal, the R side audio terminal and the ground terminal from the tip thereof Although
not shown, each terminal is connected to the microphone for transmission of the earphone
microphone, the L side earphone and the R side earphone.
[0021]
On the other hand, in the stereo jack 12, terminals 13, 15, 17 and 18 are arranged
corresponding to the transmission terminal of the plug, the L-side audio terminal, the R-side
audio terminal and the ground terminal respectively. Terminals 14 and 16 are provided
corresponding to the respective 15.
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Then, before the plug is inserted, the terminals 13 and 14 and the terminals 15 and 16 contact
with each other, and when the plug is inserted, the connection between the terminals 13 and 14
and the terminals 15 and 16 is cut off. .
[0022]
Next, the processing operation of stereo sound according to the embodiment of the present
invention will be described.
First, an operation of inputting stereo sound to the stereo jack 12 will be described.
In FIG. 1, the stereo sound output from the tone generator 2 is first converted to analog signals
by the D / A converters 5 and 6, and these analog signals are superimposed on the reception
voice by the summing amplifiers 7 and 8 as necessary. Ru.
[0023]
The outputs from the summing amplifiers 7 and 8 are amplified by the output amplifier 9 and
output to the earphone microphone or the receiver 11 for receiving voice output.
At this time, when a plug for stereo is inserted in the stereo jack 12, the L side audio from the
adding amplifier 7 and the R side audio from the adding amplifier 8 are output as they are, and
the plug is inserted in the stereo jack 12 When the voice is output to the receiver 11, only the
output from the summing amplifier 7 is differentially output.
[0024]
Next, with reference to FIGS. 2 and 3, a method of processing stereo sound output in an
embodiment of the present invention will be described in detail.
[0025]
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First, in FIG. 2, before the plug is inserted, the terminals 13 and 14 and the terminals 15 and 16
are in contact with each other, and when the plug is inserted, the connection between the
terminals 15 and 16 is broken. The path to the receiver 11 is cut off.
The L-side audio signal input to the terminal 15 is output to the L-side audio terminal of the plug,
and the R-side audio signal input to the terminal 17 is output to the R-side audio terminal of the
plug.
[0026]
On the other hand, as shown in FIG. 3, when the plug is not inserted, the output amplifier 9
differentially outputs only the output of the summing amplifier 7 and an audio signal is
differentially input to the terminal 15 and the terminal 17 .
The audio signal input to the terminal 15 is output as it is from the terminal 16, and audio is
output from the receiver 11 in a differential with the audio signal input to the terminal 17.
[0027]
Therefore, according to this embodiment, the voice can be output from the receiver 11 before the
plug is inserted, and if the plug is inserted, the L side handset (L side earphone) and the R side
handset (R side earphone) of the earphone microphone Can output stereo sound from.
[0028]
FIGS. 4, 5 and 6 are diagrams for explaining the processing method of stereo sound signal output
according to the second embodiment of the present invention.
[0029]
This embodiment not only can output stereo sound, but can also use a conventional monophonic
handset.
For this reason, as shown in FIG. 4, the plug is arranged in the order of the R-side audio terminal,
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the transmitting terminal, the L-side audio terminal and the ground terminal from the tip thereof.
It is connected to the R-side earphone, the transmission microphone and the L-side earphone.
[0030]
On the other hand, in the stereo jack 12, terminals 23, 19, 21 and 24 are arranged
corresponding to the R-side audio terminal, transmission terminal, L-side audio terminal and
ground terminal of the plug, respectively. The terminals 20 and 22 are provided corresponding
to each of.
Then, before the plug is inserted, the terminals 19 and 20 and the terminals 21 and 22 are in
contact, and when the plug is inserted, the connection between the terminals 19 and 20 and the
terminals 21 and 22 is disconnected. .
[0031]
The terminal 19 receives a transmission voice signal from the earphone microphone, and the
terminals 21 and 23 receive an L-side audio signal and an R-side audio signal from the inside of
the portable telephone.
[0032]
As shown in FIG. 4, when the stereo plug is inserted, the connection to the terminals 21 and 22 is
cut, and the path to the internal receiver 11 is cut off.
The L-side audio signal input to the terminal 21 is output to the L-side audio terminal of the plug,
and the R-side audio signal input to the terminal 23 is output to the R-side audio terminal of the
plug.
As a result, stereo sound can be output from the earphone microphone.
[0033]
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On the other hand, as shown in FIG. 5, when the conventional monaural plug is inserted, the
connection between the terminal 21 and the terminal 22 is cut, and the path to the internal
receiver 11 is cut off.
The L-side audio signal input to the terminal 21 is output to the receiving-side audio terminal of
the plug, and the R-side audio signal input to the terminal 23 is not output because it is not in
contact with the plug.
As a result, even if a conventional plug is inserted, a monaural call can be made.
[0034]
When no plug is inserted in FIG. 6, the output amplifier 9 differentially outputs only the output of
the summing amplifier 7 and an audio signal is differentially input to the terminal 21 and the
terminal 22. The audio signal input to the terminal 21 is output from the terminal 22 as it is, and
audio is output from the receiver 11 in a differential with the audio signal input to the terminal
23.
[0035]
Therefore, according to this embodiment, audio can be output from the receiver 11 before plug
insertion, and stereo sound can be output from the L-side and R-side earphones of the earphone
microphones by inserting the plug. Furthermore, even when a conventional plug is inserted, a
monaural sound can be output.
[0036]
7, 8 and 9 are diagrams showing a method of processing stereo sound output in the third
embodiment of the present invention.
[0037]
The plug of this embodiment has the same length as the conventional plug, and the ground
terminal and the R-side audio terminal are arranged in the ground terminal portion of the
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conventional plug.
That is, as shown in FIG. 7, the plug has the terminals arranged in the order of the transmitting
terminal, the L side audio terminal, the ground terminal and the R side audio terminal from the
tip, and the respective terminals are not shown It is connected to the transmitting microphone,
the L side earphone and the R side earphone.
[0038]
On the other hand, in the stereo jack 12, terminals 25, 27, 30 and 29 are arranged
corresponding to the transmission terminal of the plug, the L-side audio terminal, the ground
terminal and the R-side audio terminal respectively. Terminals 26 and 28 are provided
corresponding to each of 27.
Then, before the plug is inserted, the terminals 25 and 26 and the terminals 27 and 28 contact
with each other, and when the plug is inserted, the connection between the terminals 25 and 26
and the terminals 27 and 28 is disconnected. .
[0039]
First, in FIG. 7, when the stereo plug is inserted into the jack 12, the connection between the
terminal 27 and the terminal 28 is cut, and the path to the internal receiver 11 is cut off. The Lside audio signal input to the terminal 27 is output to the L-side audio terminal of the plug, and
the R-side audio signal input to the terminal 29 is output to the R-side audio terminal of the plug.
As a result, stereo sound is output from the earphone microphone.
[0040]
In FIG. 8, when the conventional plug is inserted, the connection to the terminals 27 and 28 is
cut, and the path to the internal receiver 11 is cut off. The L-side audio signal input to the
terminal 27 is output to the receiving-side audio terminal of the plug, but since the terminal 29
and the ground terminal of the plug are connected, the R-side audio signal input to the terminal
29 is the plug Not output to Since the terminal 25 is connected to the transmitting side voice
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terminal, it is possible to make a monaural call.
[0041]
In FIG. 9, when no plug is inserted, the output amplifier 9 differentially outputs only the output
of the summing amplifier 7 and an audio signal is differentially input to the terminal 27 and the
terminal 29. The audio signal input to the terminal 27 is output as it is from the terminal 28, and
audio is output from the receiver 11 as a differential from the audio signal input to the terminal
29.
[0042]
10, 11 and 12 show a method of processing stereo sound output according to the fourth
embodiment of the present invention.
[0043]
In this embodiment, a circuit capable of determining whether a plug for stereo or a monaural
plug is inserted is provided inside a portable telephone.
That is, the configuration of the stereo jack 12 and the plug is the same as that of FIG. 7
described above, and an A / D converter 31 is newly provided. The A / D converter 31 receives
the signal applied to the terminal 29 of the stereo jack 12 and determines which one of the
stereo plug and the monaural plug has been inserted.
[0044]
First, in FIG. 10, when the stereo plug is inserted, since the connection between the terminal 27
and the terminal 28 is cut, the path to the internal receiver 11 is cut off. The L-side audio signal
input to the terminal 27 is output to the L-side audio terminal of the plug, and the R-side audio
signal input to the terminal 29 is output to the R-side audio terminal of the plug. At this time, the
A / D converter 31 connected to the terminal 27 converts the amplitude of the audio signal input
to the terminal 29 into a digital signal, and the plug for stereo is inserted based on the output
signal. It can be recognized.
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[0045]
In FIG. 11, when the conventional plug is inserted, the connection between the terminal 27 and
the terminal 28 is cut, and the path to the internal receiver 11 is cut off. The L-side audio signal
input to the terminal 27 is output to the receiving-side audio terminal of the plug, but the R-side
audio signal input to the terminal 29 is not output because the terminal 29 and the ground
terminal of the plug are connected . As a result, since the A / D converter 31 does not output the
digital signal of the amplitude of the audio signal, it can be recognized that the plug is a
conventional plug.
[0046]
In FIG. 12, when the plug is not inserted, the output amplifier 9 differentially outputs only the
output of the summing amplifier 7, and a differential audio signal is input to the terminal 27 and
the terminal 29. The audio signal input to the terminal 27 is output as it is from the terminal 28,
and audio is output from the receiver 11 as a differential from the audio signal input to the
terminal 29.
[0047]
Therefore, according to this embodiment, since the output of the A / D converter 31 determines
that the audio signal is output to the R-side or L-side terminal, the determination signal is a
constant voltage and is inserted into the jack. It can be easily identified whether the plug is for
stereo or for conventional monaural.
[0048]
FIG. 13, FIG. 14 and FIG. 15 are diagrams showing a processing method of stereo sound output
in the fifth embodiment of the present invention.
[0049]
In this embodiment, the plug is provided with a display terminal 121 for indicating that the plug
is a stereo plug, and the display terminal 121 is connected to the ground terminal (G).
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On the other hand, the stereo jack 12 is newly provided with an identification terminal 32 in
contact with the display terminal 121. The identification terminal 32 is connected to an
identification circuit (not shown) and a pull-up power supply V1 via a resistor R1. Whether it is a
stereo plug or a conventional plug is determined according to whether or not the identification
terminal 32 is grounded.
[0050]
When the transmission side terminal of the plug contacts the terminal 25 of the jack, a detection
circuit (not shown) detects that the plug is inserted, and whether the plug inserted at this time is
a stereo plug or a conventional plug at the same time For detection, the display terminal 121 is in
contact with the identification terminal 32 and the ground terminal is in contact with the
terminal 30 before the transmission side terminal of the plug contacts the terminal 25.
With this configuration, before the transmitting terminal of the plug contacts the terminal 25, the
potential of the identification terminal 32 is determined, so it can be reliably detected whether
the inserted plug is a stereo plug or a conventional plug. .
[0051]
In FIG. 13, when the stereo plug is inserted, the connection between the terminal 27 and the
terminal 28 is cut, and the path to the internal receiver 11 is cut off. The L-side audio signal
input to the terminal 27 is output to the L-side audio terminal of the plug, and the R-side audio
signal input to the terminal 29 is output to the R-side audio terminal of the plug. At this time,
since the terminal 32 is connected to the terminal 30 via the display terminal 121 on the plug
side, the potential becomes GND, and it can be recognized that a stereo plug is inserted.
[0052]
In FIG. 14, when the monaural plug is inserted, the connection between the terminal 27 and the
terminal 28 is cut, and the path to the internal receiver 11 is cut off. The L-side audio signal
input to the terminal 27 is output to the receiver-side audio terminal of the plug, but since the
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terminal 29 and the GND terminal of the plug are connected, the R-side audio signal input to the
terminal 29 is output I will not. At this time, since the terminal 32 is not in contact with the plug,
the potential is equal to the bias potential supplied via the resistor R1, and it can be recognized
that the conventional monaural plug is inserted.
[0053]
In FIG. 15, when no plug is inserted, the output amplifier 9 differentially outputs only the output
of the summing amplifier 7 and an audio signal is differentially input to the terminal 27 and the
terminal 28. The audio signal input to the terminal 27 is output as it is from the terminal 28, and
audio is output from the receiver 11 as a differential from the audio signal input to the terminal
29.
[0054]
Therefore, according to this embodiment, it is possible to identify whether the plug inserted in
the jack is for stereo or monaural by measuring the potential of the added display terminal 121,
and for detecting it. Detection is easy because the signal is a constant voltage.
[0055]
FIGS. 16, 17 and 18 are diagrams showing a method of processing stereo audio output in the
sixth embodiment of the present invention.
[0056]
This embodiment uses transistor 40 and the microphone bias supplied to terminal 25 to
determine whether it is a stereo plug or a conventional plug.
The base of the transistor 40 is connected to the terminal 32, the collector is connected to the
bias power supply V1 via the resistor R1, and the emitter is grounded.
The terminal 25 is connected to a bias power supply V2 via a resistor R2 and is supplied with a
microphone bias. A display terminal 121 provided on the plug is connected to a transmitter
terminal (transmitter).
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[0057]
In the fifth embodiment, since the display terminal 121 and the ground terminal are connected,
the ground terminal and the display terminal 121 both contact the corresponding terminals of
the jack before the transmission side terminal of the plug contacts the terminal 25. In this
embodiment, the display terminal 121 may be in contact with the identification terminal 32
before the transmission terminal of the plug contacts the terminal 25.
[0058]
First, in FIG. 16, when the stereo plug is inserted, the connection between the terminal 27 and
the terminal 28 is cut, and the path to the internal receiver 11 is cut off.
The L-side audio signal input to the terminal 27 is output to the L-side audio terminal of the
stereo plug, and the R-side audio signal input to the terminal 29 is output to the R-side audio
terminal of the stereo plug. At this time, since the terminal 32 is connected to the terminal 25 via
the display terminal 121 on the plug side, the potential of the terminal 32 becomes equal to the
bias potential defined by the resistor R2, and the transistor 40 is turned on. Therefore, when the
potential of the identification circuit becomes the GND potential, it can be recognized that the
plug for stereo is inserted.
[0059]
In FIG. 17, when the conventional plug is inserted, the connection between the terminal 27 and
the terminal 28 is cut, and the path to the internal receiver 11 is cut off. The L-side audio signal
input to the terminal 27 is output to the receiving-side audio terminal of the plug, and since the
terminal 29 and the GND terminal of the plug are connected, the R-side audio signal input to the
terminal 29 is not output. At this time, since the terminal 32 is not in contact with the plug, the
transistor 40 is not turned on, and the potential of the identification circuit becomes the same
potential as the bias potential applied via the resistor R1, whereby the conventional monaural
plug is inserted. Can recognize that
[0060]
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In FIG. 18, when the plug is not inserted, the output amplifier 9 differentially outputs only the
output of the summing amplifier 7, and the audio signal is differentially input to the terminal 27
and the terminal 29. The audio signal input to the terminal 27 is output as it is from the terminal
28, and audio is output from the receiver 11 in a differential with the audio signal input to the
terminal 29.
[0061]
Therefore, according to this embodiment, when plug insertion is detected, the potential of the
terminal for identifying whether the plug being inserted is for stereo or monaural is determined.
It can be reliably detected whether the inserted plug is stereo or conventional.
[0062]
It should be understood that the embodiments disclosed herein are illustrative and nonrestrictive in every respect.
The scope of the present invention is indicated not by the above description but by the claims,
and is intended to include all the modifications within the meaning and scope equivalent to the
claims.
[0063]
As described above, according to the present invention, a stereo audio signal can be output to a
stereo handset through a plug inserted into a jack.
[0064]
Not only can the stereo sound signal be output through the plug inserted into the jack, but also a
conventional monaural plug can be inserted to use a monaural handset, in which case either the
left or right audio signal can be used Only one can be output.
[0065]
Furthermore, the A / D converter can detect that an audio signal is output to the R-side or L-side
terminal, and the plug inserted in the jack is for stereo or for conventional monaural Can easily
identify.
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[0066]
Furthermore, by measuring the potential of the added terminal, it is possible to identify whether
the plug inserted in the jack is for stereo or monaural, and since the signal to be detected is a
constant voltage, detection is performed. Becomes easier.
[0067]
Furthermore, when plug insertion is detected, the potential of the terminal for identifying
whether the inserted plug is for stereo or monaural is determined, so the inserted plug is stereo.
It is possible to reliably detect whether there is any or conventional one.
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