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JP2002027029

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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 JP2002027029
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
communication terminal apparatus suitable for application to a radio telephone apparatus called,
for example, a mobile telephone terminal.
[0002]
2. Description of the Related Art Conventionally, various functions have been carried out to
combine other functions with a communication terminal apparatus used as a wireless telephone
apparatus to form a compound terminal. That is, since the radio telephone apparatus is generally
configured to be small for portable use and always carried by the user, the terminal apparatus
has a clock function, a schedule management function, and the like in addition to the function as
a radio telephone. There is one which is made to display on a display device provided.
[0003]
Here, it has been proposed to incorporate an audio reproduction device into a portable terminal
device as a more sophisticated compound terminal. That is, with the recent increase in
semiconductor memory capacity and improvement in audio data compression technology, it has
become possible to store, for example, several tens of minutes to several hours of audio data in a
memory incorporated in a memory card. . A small-sized reproduction apparatus using this
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memory card as a recording medium (storage medium) has already been put into practical use in
which headphones are attached and audio is listened to by the headphones.
[0004]
[0004] By incorporating an audio reproducing apparatus using such a memory as a recording
medium into a portable telephone terminal, when the portable telephone terminal is not used for
a telephone call, headphones are attached to the terminal to listen to the audio. Can expand the
use of mobile phone terminals.
[0005]
Further, by attaching an audio reproducing device to a portable telephone terminal, for example,
audio data is downloaded from the center to the terminal through a wireless telephone line, and
the audio data is stored in a memory card mounted on the terminal. The audio data can be easily
delivered to the user, which is very convenient.
[0006]
Also, it is possible to make a call using the telephone function using the mobile telephone
terminal while the headphone is attached to the mobile telephone terminal in which such an
audio reproduction apparatus is built in. It is
In this case, for example, a microphone in which a microphone is integrally attached to a
headphone can be used to both hear the voice from the other party with the headphone and to
pick up the voice to be sent to the other party with the microphone. Do.
[0007]
In addition, the mobile phone terminal needs to ring the incoming call as a telephone.
There are also models that can set the mode to notify the incoming call by vibration or light etc.
by the vibrator function, but basically, it is configured to be able to make a ringing tone by some
kind of sound when an incoming call is received. As this ringing tone, in addition to the electronic
sound that simply sounds "peep", a melody for a short time of about several seconds to 10
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seconds may be made to sound as an electronic sound. In the present specification, the ringing
tone to be sounded at the time of an incoming call is referred to as a ringing tone.
[0008]
By the way, since headphones for reproducing audio are usually used by being attached to both
the user's left and right ears, a call is made using the headphones If you do so, you will be using
the left and right ears to make a call. When both parties hear the other party's speaking voice,
the person who is making a call on the mobile phone terminal can not hear the ambient sound
during the call, and makes a call in an unnatural situation It will be.
[0009]
That is, at the time of a call by a conventional ordinary telephone, the speaker unit of the
telephone handset or the portable telephone terminal is brought close to the one ear of the
talker, and the conversation is made using only one of the ears, and vice versa The side ears are
in a situation where they can hear surrounding sounds and their own speaking voices. However,
if you attach headphones for playing back audio and listen to the other person's speech from
both ears, it will be unnaturally different from the situation during a regular call, and your own
speech will also be natural Then you can not hear it and you will have a strange call situation.
[0010]
An object of the present invention is to make it possible to make a call with a natural feeling of
use when wearing headphones in this type of communication terminal device.
[0011]
SUMMARY OF THE INVENTION According to the present invention, a communication terminal
apparatus is provided with reproduction processing means for reproducing data from a storage
medium storing audio data or audio data, and a headphone is connected to a headphone
connection terminal. When the audio data or audio data reproduced by the reproduction
processing means is output from the headphone on the left and right 2 channels, and the audio
data for speech is output from only one of the channels of the headphone. It is.
[0012]
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[0012] By doing this, when playing back audio and the like using the playback function, it is
possible to output from the connected headphones in two channels.
In addition, when making a call using headphones, the voice for call is output from only one
channel of the connected headphones.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will
be described below with reference to the accompanying drawings.
[0014]
In this embodiment, for example, the present invention is applied to a radio telephone apparatus
(mobile telephone terminal) which performs a telephone call or data communication by
wirelessly transmitting digital data with a base station.
In addition to the function unit as a wireless telephone, the mobile telephone terminal of this
embodiment incorporates an audio reproduction function unit.
[0015]
FIG. 1 is a view showing an example of the appearance of the portable telephone terminal 100 of
this embodiment.
The mobile telephone terminal 100 of this example is configured as a so-called foldable mobile
telephone terminal in which the first housing 110 and the second housing 120 are rotatably
joined at a joint portion 101. FIG. 1 shows both of the housings 110 and 120 in an open state,
and the first housing 110 side of the surface that becomes the inside when the housing is opened
is configured with a plurality of keys used as a mobile phone A key input unit 111 is arranged. As
keys prepared as the key input unit 111, keys of numbers 0 to 9 and symbols of * and #, keys for
performing operations related to transmission (so-called off-hook operation, on-hook operation,
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etc.) and various functions are set The key to be done is prepared. One of the function keys 111a
is used as a key for stopping the telephone function and setting and canceling a mode in which
only the audio playback function is activated.
[0016]
Some of the keys 111b and 111c are disposed on the second housing 120 side. Furthermore, on
the side surface of the first housing 110, a jog dial unit 112 capable of rotating operation and
pressing operation is disposed, and various operations can be performed by the operation of the
jog dial unit 112. By operating the jog dial unit 112, it is also possible to operate the audio
playback function.
[0017]
A microphone 113 for speech communication is disposed at the lower end of the first housing
110, and a speaker 122 for speech is disposed at the upper end of the second housing 120. By
making the speaker 122 and the speaker 122 close to the mouth and the ear of the caller, it is
possible to make a call. A display panel constituting the display unit 123 is disposed in the
central portion of the second housing 120, and the operation state, the registered telephone
number, the received text mail, etc. are received by numbers, characters, figures, etc. A variety of
related displays are possible. In addition, display related to the audio reproduction function
described later is also possible.
[0018]
A memory card mounting portion 114 is provided in the first housing 110. For example, the
memory card 10 can be inserted and mounted from the side of the housing. As the memory card
10 which can be used in the case of the present embodiment, for example, one in which a nonvolatile semiconductor memory is accommodated in a resin package formed in a stick shape
(long thin plate shape) is used.
[0019]
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A whip antenna 121 is attached to the upper end of the second housing 120, and various
terminals are disposed on the side surface. Specifically, a headphone jack 124, an audio input
jack 125, and a data communication port 126 are arranged. About headphone jack 124, the
output part of the audio signal (audio signal) of right and left 2 channels supplied to the
headphone device, the input part of the audio signal picked up by the microphone built in the
headphone device, and the remote control attached to the headphone device An input / output
unit for communicating with the device is integrated. The data communication port 126 is, for
example, a port for connecting to an information device such as a personal computer device, for
example, an interface port of a standard called USB (Universal Serial Bus), or IEEE (The Institute
of Electrical and Electronic) Electronics Engineers) It is an interface port of 1394 standard.
[0020]
In the headphone device 20 provided with the plug 21 attached to the headphone jack 124, the
remote control unit 22 is attached to the middle of the signal line. The remote control unit 22 is
provided with a display unit 23, a key 24, a volume, and a microphone 26. The left and right
headphone units 27L and 27R are attached to the tip of the signal line, and the left headphone
unit 27L outputs the audio (voice) of the left channel, and the right headphone unit 27R outputs
the right channel Voice) is output.
[0021]
FIG. 2 is a view showing the front surface side (that is, the surface on the side of the second
housing 120) in a state in which the portable telephone terminal 100 of this example is closed.
On this surface, a plurality of keys 111d for performing an operation for audio reproduction and
a volume key 111e for adjusting the reproduction volume are arranged. Furthermore, a speaker
143 for outputting reproduced audio is disposed. The speaker 143 is also used to ring a ringing
tone when a call arrives.
[0022]
FIG. 3 is a view showing the back side (that is, the surface on the side of the first housing 110) of
the state in which the portable telephone terminal 100 of this example is closed. On this surface,
a mounting portion 151 of a battery (secondary battery) is provided, and a reject switch 152 for
removing the memory card 10 mounted on the mounting portion 141 is disposed.
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[0023]
Next, the internal configuration of the portable telephone terminal 100 of this embodiment will
be described with reference to FIG. As a circuit for a radio telephone, the antenna 121 is
connected to the receiving circuit 132 and the transmitting circuit 134 via the antenna duplexer
131. The reception circuit 132 performs reception processing of the designated channel,
supplies the signal received by the reception circuit 132 to the audio processing unit 133, and
demodulates and extracts the audio signal and various data transmitted by radio. The audio
signal is output from the speaker 122. Further, the audio signal output from the microphone 113
is supplied to the audio processing unit 133, and processing such as modulation for wireless
transmission is performed, and the processed signal is transmitted as a transmission signal of a
predetermined channel by the transmission circuit 134. Processing is performed, and the
transmission signal is wirelessly transmitted from the antenna 121. The processes in the voice
processing unit 133, the receiving circuit 132, and the transmitting circuit 134 are executed
under the control of the central control unit (CPU) 135. The CPU 135 is a microprocessor that
controls various signal processing in the mobile phone terminal, and the CPU 135 also controls
the audio reproduction function.
[0024]
The reception circuit 132 is connected to the incoming call detection circuit 132a, and the
incoming call detection circuit 132a detects the incoming call to the terminal 100 from the
control signal or the like received from the base station by the reception circuit 132. It is. When
an incoming call is detected by the incoming call detection circuit 132a, the incoming call
detection information is supplied to the CPU 135, and processing necessary for the CPU 135 is
executed. The processing required for the incoming call here includes, for example, processing
for ringing a ring tone and processing for starting a call or the like.
[0025]
The CPU 135 is connected to a ROM 136 storing information necessary for the operation of the
terminal and a RAM 137 storing information registered by the user such as telephone directory
information, and the CPU 135 stores information as needed. It is made to read it out. In this case,
the ROM 136 is a flash memory capable of rewriting a part of stored data when predetermined
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processing is performed, and the registration information regarding the telephone function is
written. As registration information on the telephone function stored in the ROM 136, ID data
which is an identification number unique to the telephone terminal, information on the presence
or absence of a contract to a wireless telephone company, or a telephone company if a contract is
made. There is information on the telephone number given by Further, when a contract
regarding the audio reproduction function is required, information regarding the contract may be
written in the ROM 136.
[0026]
In addition, a partial area of the ROM 136 is set as a storage unit of ringing tone data, and when
there is an incoming call to this terminal, the ringing tone stored in this area is controlled by the
CPU 135. The data selected in advance from the data is read out, and the ringing tone is emitted
as the electronic sound from the speaker 122 (or a dedicated speaker for ringing tone not
shown).
[0027]
Information obtained by operating the key input unit 111 or the jog dial unit 112 is supplied to
the CPU 135 so that the CPU 135 executes an operation based on the operation information.
The CPU 135 also controls display on the display unit 123. The configuration described so far is
basically a configuration related to the telephone function.
[0028]
Next, the configuration relating to the audio reproduction function will be described. In the case
of this example, data compressed from audio data according to a predetermined method (for
example, ATRAC (Adaptive Transform Acoustic Coding) 3 method) It is made to memorize in ten.
In this case, two channels of audio data for stereo reproduction of the left and right channels can
be stored here.
[0029]
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When the memory card 10 storing the two-channel audio data is loaded into the memory card
loading unit 114, the data stored in the memory card 10 is supplied to the decoder 138 under
the control of the CPU 135 and compressed by the decoder 138. The compressed data is
subjected to reverse compression processing to restore the original data, and the returned data is
supplied to the digital / analog converter 139 to form a 2-channel analog audio signal. Then, the
audio signal of the left channel converted by the digital / analog converter 139 is supplied to the
left channel output terminal 124L of the headphone jack 124 through the amplifier 145L for the
left channel. Also, the audio signal of the right channel converted by the digital / analog
converter 139 is supplied to the right channel output terminal 124R of the headphone jack 124
via the right channel amplifier 145R.
[0030]
The gains of the amplifiers 145L and 145R of the left and right channels are controlled by the
CPU 135. Reproduction volume adjustment may be performed by gain control of the amplifiers
145L and 145R. In this case, the gains of the left and right channels can be controlled
independently, and if necessary, the CPU 135 can control the gain of the amplifier of one of the
channels to put only one of the channels in a muting state (so-called silent state). It is done like
that.
[0031]
Further, to the digital / analog converter 139, the speech for speech from the speech processing
unit 133 is supplied as digital data, and the speech for speech data is supplied to the digital /
analog converter 139. In this case, the voice signal for call is supplied to the output terminals
124L and 124R of each channel via the amplifiers 145L and 145R, and the voice for call is
transmitted from the headphone units 27L and 27R of the headphone device 20 connected to the
headphone jack 124. Is output. However, in this case, the gain of either one of the left channel
amplifier 145L and the right channel amplifier 145R is controlled by the control of the CPU 135,
and only one channel is in the muting state, and the headphones of the other channel are Call
audio is output from the unit only. Details of the process of setting the muting state will be
described later.
[0032]
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Also, it is possible to supply an audio signal output from the digital / analog converter 139 to a
speaker 143 attached to the surface of the terminal via the amplifier 142 and output it. The
selection of the output system of the digital / analog converter 139 (that is, the selection of a
system using headphones and a system using speakers) is controlled by the CPU 135.
[0033]
The audio reproduction function unit of this example also has a function of recording (storing)
the input audio signal (or audio signal) in the mounted memory card 10. For this recording
function, the input terminal 125 of digital audio data is provided, and the audio data obtained at
the input terminal 125 is supplied to the decoder 138. As described above, the audio
reproduction function unit of this example is configured to process two channels of stereo audio
signals, and the input terminal 125 is also configured as an input terminal to which two channels
of audio signals can be input. The decoder 138 of this example also has a function as an encoder
for encoding input data for recording, and stores the data encoded under the control of the CPU
135 in the memory card 10 installed in the memory card installation unit 114. It is done like
that. Here, the decoding processing and encoding processing in the decoder 138 are processing
of a system suitable for processing audio data such as music.
[0034]
The headphone jack 124 shown in FIG. 1 includes, in addition to the output terminals 124L and
124R for the left and right channels shown in FIG. 4, an input terminal 124m for an audio signal
from a microphone built in the headphone, and a remote control And an input / output terminal
124c.
[0035]
An audio signal obtained at the input terminal 124m can be supplied to the decoder 138 through
the analog / digital converter 141, encoded as in the case of audio data, and stored in the
memory card 10 It is.
Further, an audio signal from the microphone obtained at the input terminal 124m is supplied to
the audio processing unit 133 so that it can be processed as a speech for speech like the audio
input from the microphone 113. The remote control input / output terminal 124c is a terminal
for the CPU 135 to communicate with the remote control unit 22 in the headphone device 20,
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and the CPU 135 controls the display on the display unit 23 in the remote control unit 22. The
CPU 135 determines the operation information of the key 24 and the like. It is also possible to
superimpose the signal for remote control on the audio signal (audio signal), and to make the
input / output terminal 124c for remote control common to the output terminals 124L and
124R. Further, the CPU 135 of this example is configured to be able to detect the presence or
absence of attachment of the plug 21 of the headphone device 20 to the headphone jack 124.
The presence / absence of attachment of the plug 21 may be detected either electrically from the
change in impedance of the signal line or the like, or by a switch mechanism or the like.
[0036]
In addition, the portable telephone terminal 100 of this example is provided with a data
communication port 126 for communicating with an information device such as a personal
computer device, and the interface unit 144 is connected to the port 126. The CPU 135 and the
decoder 138 can communicate with devices on the opposite side connected to the port 126 via
the unit 144. In communication with an external device using this port 126, for example, audio
data supplied from the external device to the port 126 is supplied to the decoder 138,
compressed for recording (storage), and the memory card mounting portion Storing the data in
the memory card 10 mounted on the memory 114, or decompressing the audio data stored in
the memory card 10 by the decoder 138 and supplying the data to the device connected to the
port 126, etc. Is possible. Also, data received by this terminal via the wireless telephone line is
supplied to the port 126 under the control of the CPU 135 and supplied to an external device, or
conversely, data obtained from the external device to the port 126 is It can also be sent to the
wireless telephone line side under the control of the CPU 135.
[0037]
Further, various data such as audio data received by the receiving circuit 132 of this terminal via
a wireless telephone line can be stored in the memory card 114 under the control of the CPU
135. In this case, if the received data is already encoded for storage, the encoding process at the
decoder 138 may be omitted and written to the memory.
[0038]
Thus, the portable telephone terminal of this embodiment incorporates a function unit for
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recording (storing) and reproducing audio data and voice data. In the case of this example, since
the memory card 10 is detachable from the mounting unit 114, for example, the memory card 10
storing audio data in another audio device is attached to the mobile phone terminal 100 of the
present example. It is also possible to play it back.
[0039]
Next, the process at the time of an incoming call in the portable telephone terminal of this
embodiment will be described with reference to the flow chart of FIG. First, the CPU 135
determines whether an incoming call has been detected by the incoming call detection circuit
132a (step S11). When an incoming call is not detected, the process stands by as it is.
[0040]
When the presence of an incoming call is detected, the CPU 135 determines whether or not the
headphone device is attached, that is, whether the plug 21 of the headphone device 20 is
connected to the headphone jack 124 (step S12). Here, when it is determined that the headphone
device 20 is not connected, a normal incoming process is performed (step S13). In the normal
incoming call processing here, a ringing tone (ringing tone) set in advance is emitted, and when
the off-hook operation is performed, the output of the ringing tone is stopped, and the
microphone 113 and the speaker attached to the terminal 100 This is a process for starting a call
using 122. In this normal reception process, instead of ringing the ring tone, the terminal body
may be vibrated by a vibrator (not shown) to notify of an incoming call.
[0041]
If it is determined in step S12 that the headphone device is connected, it is determined whether
the audio data (or audio data) stored in the memory card 10 is being reproduced using the audio
reproduction function unit (step S12) Step S14). Here, if it is determined that reproduction is in
progress, processing for stopping the reproduction is performed (step S15). Then, when it is
determined in step S14 that reproduction is not in progress, and after stopping reproduction in
step S15, the CPU 135 controls the gain of the left channel amplifier 145L to mute the output
from the output terminal 124L of the left channel. The left channel is set to silence (step S16).
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[0042]
Then, in this state, the data of the ringing tone (ringing tone) is supplied from the decoder 138 to
the digital / analog converter 139 to obtain an analog signal for outputting the ringing tone, and
the analog signal is output to the right channel. This is supplied to the headphone unit 27R for
the left channel of the headphone device 20 connected via the amplifier 145R for the left
channel and the output terminal 124R for the right channel, and the ring tone is output from the
headphone unit 27R for this left channel (step S17) . Since the headphone unit 27L of the left
channel is in the muting state, the ringing tone is not output. In addition, here, as a setting for
normal incoming call, whether the ringing tone is set to sound or the ringing is notified by
vibration using a vibrator, either wearing a headphone At times, the ring tone output from the
headphone is used to indicate an incoming call.
[0043]
Then, in the state where the ring tone is output in step S17, the CPU 135 determines whether or
not there is an off-hook operation (step S18), and if there is no off-hook operation, whether or
not the incoming state continues. It is determined (step S19), and when the incoming state is
continuing, the output of the ringing tone in step S17 is continued. As the off-hook operation
here, in addition to the operation corresponding to the key input unit 111 and the jog dial unit
112 arranged in the terminal, the corresponding operation by the operation of the key 24 in the
remote control unit 22 attached to the headphone device 20 May be performed.
[0044]
When it is determined in step S18 that an off-hook operation has been performed, the process
proceeds to a call process with the other party connected via the wireless telephone line (step
S20), and the headphone unit 27R and the microphone 26 of the connected headphone device
20 are used. A call is made. At this time, since the left channel is set to silent in step S16, the
voice for communication is output only from the headphone unit 27R of the right channel. Then,
it is determined whether or not the call has been terminated (step S21), and the call in step S20
is continued unless the call is terminated.
[0045]
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When the end of the call is detected in step S21, the CPU 135 controls the gain of the left
channel amplifier 145L to release the muting state (step S22), and the process is ended. Also,
when it is determined in step S19 that the incoming state has ceased, the process proceeds to
step S22, where the CPU 135 controls the gain of the left channel amplifier 145L to release the
muting state, and the incoming process is ended.
[0046]
When the muting state is released in step S22, the reproduction stopped in step S15 may be
resumed. At this time, so-called resume reproduction may be performed to resume audio
reproduction from the position stopped in step S15. Alternatively, reproduction may be started
again from the beginning of the song for which reproduction has been stopped.
[0047]
As described above, when the headphone device is connected to the portable telephone terminal,
the call processing is performed using the speaker and the microphone built in the headphone
device. Therefore, when an incoming call is made while playing back audio and the like using the
built-in audio playback function, it is possible to start a call as it is without removing the
headphone device. Then, at the time of the call, the call voice is output only from the unit of one
of the two channel headphone units 27L and 27R mounted, and the call can be performed with a
natural feeling using only one ear. Also, unless the attached headphone device 20 is of a closed
type, the sound around the user can also be captured by the other ear that can not hear the call
voice, so from this point as well the call with a natural feeling of use Can do Therefore, even in a
state where headphones of the left and right two channels are worn, it is possible to make a call
with a feeling of use similar to the case of making a call using a speaker and a microphone built
in the terminal.
[0048]
In the process of the flow chart of FIG. 5 described so far, not only the voice during the call but
also the output of the ringing tone is output from only one of the channels, but for the ringing
tone, the headphone device It may be made to output from 20 headphone units 27L and 27R on
either side.
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[0049]
FIG. 6 is a flow chart showing an example of processing in this case.
The process from step S11 to step S15 is the same as the process of FIG. 5 described above, and
the description is omitted here. Then, when it is determined that the reproduction is not in
progress in step S14 and after the reproduction is stopped in step S15, the data of the ringing
tone (ringing tone) is supplied from the decoder 138 to the digital / analog converter 139 to
receive the incoming call. An analog signal for outputting sound is obtained, and the analog
signal is output to headphone units of the left and right channels of the headphone device 20
connected via the amplifiers 145L and 145R of the left and right channels and the output
terminals 124L and 124R of the left and right channels. The ring tones are supplied to the
channels 27L and 27R, and ring tones are output from the headphone units 27L and 27R of the
left and right channels (step S31).
[0050]
Then, in the state where the ring tone is output in step S31, the CPU 135 determines whether or
not there is an off-hook operation (step S32), and if there is no off-hook operation, whether or
not the incoming state continues. If it is determined (step S33) that the incoming state is
continuing, the output of the ringing tone in step S31 is continued.
[0051]
When it is determined in step S32 that the off-hook operation has been performed, the CPU 135
controls the gain of the left channel amplifier 145L to mute the output from the left channel
output terminal 124L and make the left channel silent. It sets (step S34).
[0052]
Then, the process proceeds to a call process with the other party connected via the wireless
telephone line (step S35), and a call is made using the headphone unit 27R of the connected
headphone device 20 and the microphone 26.
At this time, since the left channel is set to a silent state in step S34, the voice for communication
is output only from the headphone unit 27R of the right channel.
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Then, it is determined whether or not the call is ended (step S36), and the call in step S35 is
continued unless the call is ended.
[0053]
When the end of call is detected in step S36, the CPU 135 controls the gain of the left channel
amplifier 145L to release the muting state (step S37), and the process is ended. Also, when it is
determined in step S33 that the incoming state is not present, the process proceeds to step S37,
and the CPU 135 controls the gain of the left channel amplifier 145L to cancel the muting state
and end the incoming process.
[0054]
By processing as shown in the flowchart of FIG. 6, as in the case of the processing shown in the
flowchart of FIG. As a result, it is possible to make a good call in the same sense as when using a
speaker and a microphone built into the terminal body. In the case of the example shown in the
flowchart of FIG. 6, since the ringing tone is output from the left and right two channel units 27L
and 27R of the headphone device, the ringing tone can be surely transmitted to the user
accordingly. it can.
[0055]
In the example described above, the channel on which voice is output during a call is fixed to one
of the channels (the right channel in the above example), but the registration operation is
performed by the user operation. It may be possible to select a channel on which voice is output
during a call. FIG. 7 is a flow chart showing an example of processing for selecting and
registering this channel.
[0056]
First, the CPU 135 determines whether or not the channel setting mode has been selected by a
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predetermined key operation or the like (step S41). Then, when the channel setting mode is
selected, it is determined whether or not the right channel is selected as the call channel (step
S42). When the right channel is selected, the left channel is connected to the CPU 135 as a
channel to be muted. It registers in the memory (step S43). If the right channel is not selected as
the call channel in step S42, it is determined whether the left channel is selected as the call
channel (step S44). Here, when the left channel is selected, the right channel is registered in the
memory connected to the CPU 135 as a channel to be muted (step S45). If the left channel is not
selected in step S44, the registered content is not updated here. When the muting process is
performed in step S16 of the flowchart of FIG. 5 or step S34 of the flowchart of FIG. 6, the
channel registered in this process is read to determine the channel to be muted.
[0057]
In this way, since the channel to be muted can be selected when headphones are attached, it is
possible for the user of the mobile phone terminal to make a call using the ear that is usually
used at the time of the call, Even users who are using their ears for calls can talk without
discomfort.
[0058]
In the channel setting mode shown in the flow chart of FIG. 7, it is possible to register a mode in
which calls can be made using both channels (ie, both ears) at the time of a call, and when this
mode is registered, Even when attached, one channel may not be muted.
[0059]
In the above-described embodiment, as processing for outputting the speech for speech from
only one of the two channels, mu is controlled by controlling the gain of the amplifier connected
to the output section of the digital / analog converter. Although the processing for performing
the switching is performed, the output channel may be selected by other processing.
[0060]
In the above-described embodiment, the audio reproduction in the audio reproduction unit is
stopped at the time of a call, but the call may be made while the audio reproduction is continued.
In this case, the output level of the audio may be limited to a certain degree, and processing such
as making it possible to clearly hear the voice for the call may be performed.
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[0061]
In the embodiment described above, audio data is recorded (stored) in the inserted memory card,
and the recorded audio data is reproduced. However, the portable telephone terminal
incorporates It is also possible to store voice data recorded by a microphone and data of a call
voice in use as a telephone in a memory in a memory card, and play it back when necessary.
In this case, processing of data to be stored may be the same as encoding processing
(compression processing) and decoding processing (decompression processing) in the case of
storing audio data such as music, but a compression ratio more suitable for speech for speech
High encoding processing and decoding processing may be performed.
Even in the case of reproducing the sound for the call or the like from the memory card, the
reproduction may be performed with two channels from the headphones. In addition, for voice
for telephone calls etc., it is general that the original number of channels is a monaural signal of
one channel, and in the case of one channel, the signal of one channel is output simultaneously
from the left and right headphones Is considered.
[0062]
Further, in the above embodiment, a memory card is used as a recording medium (storage
medium) to be used, but other recording medium may be used. In addition, when a memory is
used as a storage medium, the memory may be pre-installed in the terminal device, and may not
be replaced.
[0063]
In the embodiment described above, the mobile phone terminal using a wireless telephone line is
used as the communication terminal, but the wireless communication for other wireless
communication systems in which a call is made with the other party connected via the base
station It is also applicable to terminals.
[0064]
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According to the present invention, when playing back audio and the like using the playback
function, it is possible to output with two channels from the connected headphones, and make a
call using the headphones In this case, only one of the channels of the connected headphones is
used to output voice for communication.
Therefore, even with the two-channel headphones attached, it is possible to make a call with a
natural feeling of use using only one ear as in a normal call.
[0065]
In this case, with regard to the ringing tone to be sounded when the wireless communication
means detects an incoming call, the ringing tone can be delivered to both ears by outputting the
headphone from the left and right two channels so that the headphone can be The user can
detect an incoming call quickly and reliably while being worn.
[0066]
Further, since the muting processing of the voice or audio reproduced by the reproduction
processing means is performed when the incoming call is detected by the wireless
communication means, the ring tone and the voice for the call can be made more surely. You will
be able to hear.
[0067]
Furthermore, any one of the channels for outputting the call voice can be selected from the two
left and right channels based on a predetermined operation, thereby selecting a channel
convenient for the user. The usability as a communication terminal apparatus is improved.
[0068]
Brief description of the drawings
[0069]
1 is a perspective view showing an example (opened state) of a terminal according to an
embodiment of the present invention.
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[0070]
2 is a perspective view showing an example of the surface in a state in which the terminal device
of the example shown in FIG. 1 is closed.
[0071]
3 is a perspective view showing an example of the back side of the state in which the terminal
device of the example shown in FIG. 1 is closed.
[0072]
4 is a block diagram showing an example of the internal configuration of a terminal according to
an embodiment of the present invention.
[0073]
5 is a flowchart showing an example of processing at the time of an incoming call according to
an embodiment of the present invention.
[0074]
6 is a flowchart showing another processing example of the ringing tone according to an
embodiment of the present invention.
[0075]
7 is a flowchart showing an example of channel selection processing according to an
embodiment of the present invention.
[0076]
Explanation of sign
[0077]
DESCRIPTION OF SYMBOLS 10 Memory card, 20: headphone device, 22: remote control unit, 23:
display unit, 24: key, 25: volume, 26: microphone, 100: mobile phone terminal, 110: first
housing, 111: key input Unit: 113 Microphone: 114 Memory card attachment unit 120: Second
housing 121: Antenna 122: Speaker 123: Display unit 124: headphone jack 124L: left channel
output terminal 124R: right channel Output terminals 124c: remote control input / output
terminals 124m: microphone input terminals 125: audio input jacks 126: data communication
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ports 132: reception circuits 132a: incoming detection circuits 133: voice processing units 134:
Transmission circuit, 135: Central control unit (CPU), 38 ... decoder (encoder) 139 ... digital /
analog converter, 141 ... analog / digital converter, 145L ... left channel amplifier, 145R ... right
channel amplifier
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