JPH114481A - Portable terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain sure communication without anxiety by sending a voice unarrival notice signal, denoting a code error of a voice signal on the occurrence of the code error to a voice transmitter side and allowing the voice transmitter side to receive the voice unarrival notice signal so as to provide an output of a voice unarrival notice, thereby allowing the transmitter side to recognize unarrival of the voice signal to an opposite party. SOLUTION: A received voice detector 20 monitors a received signal, calculates the energy of the received signal for each voice analysis frame, provides a threshold level to the calculated energy, discriminates the presence of the voice signal from the received signal and provides an output of a voice presence/absence signal which is the result of discrimination to a voice CODEC 6. The voice CODEC 6 executes voice coding/decoding processing and conducts bad frame masking processing that silences a reproduced voice signal, when consecutive frames with a code error take place and the length reaches a prescribed frame number and outputs code error information which denotes a silence frame to a controller 8. The controller 8 informs the reception of a voice unarrival notice signal to an opposite party.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital mobile phone (PDC) and a portable telephone (Personal Handy-p).
The present invention relates to a portable terminal device for voice communication such as a phone system (PHS), and more particularly to a portable terminal device capable of recognizing that its own voice is not transmitted to the other party.

[0002]

2. Description of the Related Art First, a conventional portable terminal device will be described with reference to FIG. 3 using a digital car telephone system as an example. FIG. 3 is a configuration block diagram of a conventional portable terminal device. As shown in FIG. 3, the conventional portable terminal device includes a keyboard 1, an LCD 2, a microphone 3, a speaker 4, an audio CODEC 5, an audio CODEC 6 ', a channel CODEC 7, a controller 8', and a modem 9 as shown in FIG. , A wireless device 10, an antenna 11, a transmission sound detector 12, and a vibrator 13.

[0003] Next, each part of the conventional portable terminal device will be described in detail. Each part is a standard RCR S which has been studied and established by the Radio System Development Center (RCR).
It has a function and performance conforming to TD-27D.

[0004] The keyboard 1 is a keyboard which is a general data input unit in a portable terminal device, and is used to input a telephone number or the like of the other party. The LCD 2 is a general display unit in a portable terminal device, and displays a dialed telephone number and the like. The vibrator 13 is a vibrator for notifying a user of an incoming call or the like by vibration.

[0005] The microphone 3 is a microphone which is a general voice input unit in a portable terminal device, and inputs a user's voice and the like. The speaker 4 is a speaker that is a general audio output unit in the portable terminal device, and outputs a sound or the like transmitted from the other party.

The audio CODEC 5 has both an A / D converter that converts an input analog signal into a digital signal and outputs the same, and a D / A converter that converts the input digital signal into an analog signal and outputs the same. It is a vessel.

More specifically, the audio CODEC 5 converts an analog audio signal from the microphone 3 into, for example, a linear 14-bit digital audio signal and outputs it to the audio CODEC 6 ′, and outputs a linear 14-bit reproduced digital signal from the audio CODEC 6 ′. The audio signal is converted into an analog reproduced audio signal and output to the speaker 4.

An audio CODEC 6 'encodes an input digital audio signal and outputs encoded audio data, and an audio decoder decodes the received encoded audio data and outputs a reproduced digital audio signal. This is an encoding / decoding device that also has a function.

More specifically, the audio CODEC 6 'converts the linear 14-bit digital audio signal from the audio CODEC 5 into a VSELP (Vector
SumExcited Linear Predictive coding), PSI-CELP (Pitch Synchronous In
novation-Code Excited Linear Prediction), and encode the encoded audio data into channel CODEC.
7 is output.

The audio codec 6 'is a channel C
The encoded audio data received from ODEC7 is converted to VSELP for full rate, and PSI for half rate.
-The audio is decoded by CELP, and the reproduced digital audio signal is output to the audio CODEC 5.

The transmission voice detector 12 has a function of determining whether a voice signal to be input and transmitted (input voice) includes a voice signal. Specifically, the transmission voice detector 12 converts the audio CODEC 5 to the voice CODEC 5
The digital voice signal (input voice) output to 6 'is fetched, and a feature parameter for determining whether or not the voice signal is included is calculated, and whether or not the feature parameter is larger than a preset threshold value It is determined whether or not an audio signal is included, and a determination signal as a determination result is transmitted to the channel CODEC7.
Output.

In general, the characteristic parameters include spectrum envelope information expressing the timbre of the voice, pitch information expressing the level of the voice, energy information expressing the volume of the voice, and naturalness in the reproduced voice. There is sound source noise information to be output. Here, it is determined whether or not a sound signal is included based on the value of the energy information.

Incidentally, at present, the audio CODEC 6 'is realized by a digital signal processor (DSP).
The transmission voice detector 12 is also realized by being incorporated in the DSP.

The channel CODEC 7 has an RCR STD
-27D that realizes the layer 1 function specified by the VOX (Voice Operated transmi
tting) control and voice transmission and reception processing.

VO performed by the channel CODEC 7
The X control receives a determination signal, which is a result of determining whether or not an audio signal is included in the input audio input by the apparatus, from the transmission audio detector 12, and if the audio is included, the modem 9 and the radio 10 The transmission control signal to the modem 9 and the wireless device 10 is turned off by turning on the transmission control signal to the normal transmission operation, and when no voice is included, the transmission operation is stopped.

That is, the transmission operation of the modem 9 and the radio 10 is turned on / off by using the transmission control signal from the channel CODEC 7 to the modem 9 and the radio 10 depending on whether or not the input voice contains a lot of audio signals. It is turned off.

The transmission process of the channel CODEC 7 is performed by inputting / outputting the layer 2 and 3 signals from the controller 8 'to the control channel, and disassembling and assembling the layer 2 and 3 signals using error correction and bit interleaving. I do. Then, a slot is formed by adding a preamble, a synchronization word, and additional information to the decomposed layer 2 and 3 signals,
Output to the modem 9 at 42 kbps.

Also, for the information channel, a voice CO
A slot is formed by adding a preamble, a synchronization word, and additional information to the encoded voice data from the DEC 6 ', and outputs the data to the modem 9 at 42 kbps.

On the other hand, in the reception process of the channel CODEC 7, in the case of a control channel, the demodulated signal from the modem 9 is assembled to form layer 2 and signal 3 and output to the controller 8 '. In the case of the information channel,
Encoded audio data is extracted from the demodulated signal from the modem 9 and output to the audio CODEC 6 '.

The modem 9 modulates and demodulates transmission and reception signals. As a modulation and demodulation method, a π / 4 shift QPSK (Quadra
ture Phase Shift Keying). Specifically, in transmission, the modem 9 modulates the transmission slot from the channel CODEC 7 and outputs a modulated signal to the radio device 10, while in reception, demodulates the reception signal from the radio device 10 and converts the demodulated signal into the channel CODEC 7. Output to In the modem 9, the receiving operation is always performed, but the transmitting operation is performed on the channel CO.
It is turned on / off according to a transmission control signal from the DEC 7.

When transmitting, the radio 10 transmits the baseband modulated signal from the modem 9 to the 800 MHz band or 150 MHz band.
Channels are arranged in the 0 MHz band and output to the antenna 11,
The antenna 11 radiates into the air. In the case of reception, the signal received by the antenna 11 is converted into a baseband reception signal and output to the modem 9.
In the wireless device 10, the receiving operation is always performed, but the transmitting operation is turned ON / OFF according to the transmission control signal from the channel CODEC7.

The controller 8 'is an RCR STD-27D
Implements the functions of layers 2 and 3 defined in
7 is exchanged. It also controls the entire portable terminal device, such as transmitting an input from the keyboard 1 to the layers 1, 2, 3 and other functional blocks, and outputting necessary information to the LCD 2 for display. . In addition, in order to notify the user of the incoming call, a drive signal for driving vibrator 13 is output to vibrator 13 according to the setting.

The controller 8 'is currently realized by a microcomputer as software. Also, audio COD
The EC 5 or the voice CODEC 6 'has a tone generating function for generating and outputting DTMF tones and other tone signals necessary for communication, and this function is controlled by the controller 8'.

Next, the operation of the conventional portable terminal device will be described with reference to FIG. In a conventional portable terminal device, when a destination telephone number is input from the keyboard 1 at the time of calling, an audio CO is controlled by a controller 8 '.
DTMF of telephone number with DEC5 or voice CODEC6 '
A tone is generated, and the modem 9 from the channel CODEC 7
The call is transmitted through the wireless device 10 and the antenna 11 to make a call.

In the conventional portable terminal device, when an incoming call is received via the antenna 11, the radio device 10, and the modem 9, the function of the layer 1 of the channel CODEC 7 and the layer 2 of the controller 8 'are performed. In response to an incoming call by the function of (3), the vibrator 13 is driven in accordance with the setting to notify the user of the incoming call, a ringing tone is output from the audio CODEC 5, and the speaker 4 sounds,
Or to inform the user of an incoming call.

When a call starts as a result of a call or an incoming call, the user's voice is input from the microphone 3, A / D converted by the audio CODEC 5, voice-coded by the voice CODEC 6 ', and slotted by the channel CODEC 7. Is modulated by the modem 9, the channels are arranged by the wireless device 10, and radiated from the antenna 11 into the air to transmit the voice.

Conversely, the voice of the other party is received by the antenna 11, converted into a baseband reception signal by the radio 10, demodulated by the modem 9, coded voice data is extracted by the channel CODEC 7, and the voice CODEC 6 ′, The audio is decoded, the D / A conversion is performed by the audio CODEC 5, and the audio is output from the speaker 4.

Then, V in channel CODEC7
In the OX control, the characteristic parameter for determining whether or not the audio is actually included in the digital audio signal obtained by A / D-converting the audio signal input from the microphone 3 by the audio CODEC 5 is the transmission audio detection. Is calculated by the vessel 12,
It is determined whether or not voice is included from the characteristic parameters, and the determination result is output to the channel CODEC7. In the channel CODEC7, the transmission control signals to the modem 9 and the wireless device 10 are controlled according to the determination result, and the modem 9 and the The transmission operation in the wireless device 10 is turned on / off.

[0028]

However, in the above-mentioned conventional portable terminal device, when silence or noise continues during a call, especially when the propagation path condition is poor, the user's voice reaches the other party. There was a problem that it was not possible to judge whether there was nothing or the other party was silent, and they were worried.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a portable terminal device capable of recognizing that the user's own voice has not reached the other party and making a secure and reliable telephone call. .

[0030]

According to a first aspect of the present invention, there is provided a portable terminal device having a function as a function of a voice receiving side when a voice signal is detected from a received signal. A code error of the audio signal is detected, and if there is a code error, a voice non-delivery notification signal indicating a code error of the voice signal is transmitted to the voice transmitting side, and as a function of the voice transmitting side, the voice non-delivery notification signal Receiving the voice non-delivery notification signal, and outputting a voice non-delivery notification indicating reception of the voice non-delivery notification signal. Can be recognized.

According to a second aspect of the present invention for solving the above-mentioned problems of the prior art, a portable terminal device has a function of detecting an audio signal from a received signal in units of a specific section as an audio receiving function. A code error detecting means for detecting a code error of the audio signal in a specific section where the error is detected, and generating code error information when there is a code error, and a voice non-delivery which transmits the code error information as a voice non-delivery notification signal. A notification signal transmitting means, and a voice non-delivery notification output means for receiving the voice non-delivery notification signal and outputting a voice non-delivery notification as a function of the voice transmission side. The side can recognize that its own voice is not being transmitted to the other side by outputting the voice non-delivery notification.

According to a third aspect of the present invention, there is provided the portable terminal device according to the second aspect, wherein the code error detecting means decodes the voice from the received signal in which the voice signal is detected. When a code error is detected in the frame masking process during the decoding, code error information indicating that the reproduced audio signal has been silenced is created, and the audio non-delivery notification signal transmitting means transmits the code error information to the audio non-delivery. It is characterized in that it is a means for assembling and transmitting as a notification signal in a user information message in call control, and a code error can be detected in decoding generally performed on the voice receiving side.

According to a fourth aspect of the present invention, there is provided a portable terminal device according to the second or third aspect, wherein the non-delivery notification output method in the non-delivery notification output means is provided. It is characterized in that it is a method of performing a display on the display unit indicating that the voice non-delivery notification signal has been received, and the display on the display unit on the voice transmission side confirms that the own voice is not transmitted to the other party. Can be recognized.

According to a fifth aspect of the present invention, there is provided a portable terminal apparatus according to the second or third aspect, wherein the method of outputting a non-delivery notification in the non-delivery notification output means is provided. It is a method of outputting a tone signal tone that does not disturb the conversation from the ringing section, and the voice transmission side outputs the tone signal tone in the ringing section, whereby the own voice is transmitted to the other party. We can recognize that there is not.

According to a sixth aspect of the present invention, there is provided a portable terminal device according to the second or third aspect, wherein the method of outputting a non-delivery notification in the non-delivery notification output means is provided. The method is characterized in that the vibration is output by the vibrating section, and the voice transmitting side can recognize that the own voice is not transmitted to the other party due to the vibration in the vibrating section.

According to a seventh aspect of the present invention, there is provided a portable terminal device according to any of the second to sixth aspects, wherein the voice transmitting side turns on / off a voice non-delivery notification output means. It is characterized by having a means for controlling off, and the voice transmitting side can control on / off of the reception confirmation signal output as needed.

According to an eighth aspect of the present invention, there is provided a portable terminal device according to any one of the second to seventh aspects, wherein a voice non-delivery notification signal is transmitted from a voice transmitting side to a voice receiving side. A means for inputting an on / off instruction of the transmitting means and transmitting it to the audio receiving side, wherein the audio receiving side receives the transmitted on / off instruction and turns on / off the audio non-delivery notification signal transmitting means; The voice transmitting side can control on / off of the voice non-delivery notification signal transmitting means on the voice receiving side as needed.

According to a ninth aspect of the present invention, there is provided a portable terminal apparatus according to any one of the second to seventh aspects, further comprising: Turn on / off the notification signal
A means for inputting an OFF instruction and transmitting it to the voice receiving side,
On the voice receiving side, there is provided a means for receiving the transmitted on / off instruction and controlling on / off of the code error detecting means and the voice non-arrival notification signal transmitting means. On / off of the code error detecting means and the voice non-delivery notification signal transmitting means on the voice receiving side can be controlled as required.

According to a tenth aspect of the present invention, there is provided a portable terminal device according to the eighth or ninth aspect, wherein transmission of an on / off instruction is transmitted to a user information message for call control. It is characterized in that it is incorporated and can transmit control information without interfering with a call.

[0040]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the claimed invention will be described with reference to the drawings. As shown in FIG. 1, the portable terminal device according to the present invention detects a code error in a section where a voice signal in a received signal is detected on a voice receiving side, and when a code error is detected, information of the code error is detected. Is transmitted to the voice transmitting side as a voice non-delivery notification signal, and the voice transmitting side outputs a voice non-delivery notification indicating that the voice non-delivery notification signal has been received. Can communicate while recognizing that the call did not reach the other party. FIG. 1 is an explanatory view schematically showing a portable terminal device according to the present invention.

First, a portable terminal device according to the present invention will be described with reference to FIG. 2 using a digital car telephone system as an example. FIG. 2 is a configuration block diagram of the portable terminal device according to the present invention. Parts having the same configuration as in FIG. 3 are described with the same reference numerals.

The portable terminal device (the present device) of the present invention includes a keyboard 1
LCD 2, microphone 3, speaker 4, audio C
ODEC5, audio CODEC6, channel CODE
C 7, controller 8, modem 9, radio 10, antenna 11, transmission voice detector 12, vibrator 13
Further, as a characteristic part of the present invention, a received voice detector 20 is provided instead of the transmitted voice detector 12. In addition, the audio CODEC 6 and the controller 8
Are different from those of the conventional voice CODEC 6 'and controller 8'.

In this embodiment, the received speech detector 20 and speech CODEC 6 correspond to the code error detecting means according to the second and third aspects, and the controller 8 corresponds to the second and third aspects. It implements a voice non-delivery notification signal transmitting means and a voice non-delivery notification output means. The LCD 2 corresponds to a display unit according to the fourth aspect, the speaker 4 corresponds to a sounding unit according to the fifth aspect, and the vibrator 13 corresponds to a vibration unit according to the sixth aspect.

Next, each part of the apparatus will be described in detail. The keyboard 1, the LCD 2, the microphone 3, the speaker 4, the audio CODEC 5, the channel CO
DEC 7, modem 9, radio 10, antenna 11
Since the transmission voice detector 12 and the vibrator 13 are the same as those in the related art, the description is omitted here, and only the features of the present apparatus will be described.

The received voice detector 20 monitors the received signal, determines the presence or absence of a voice signal from the received signal, and performs voice detection means for outputting a voice presence / absence signal as a result of the determination to the voice CODEC 6.

More specifically, the received voice detector 20 takes in the received signal from the voice CODEC 6 and performs a voice analysis frame (for example, 20 msec at full rate and 20 msec at half rate).
Every 40 msec), the energy of the received signal is calculated, and the presence or absence of an audio signal is determined from the received signal by a determination method (known technology) by giving a threshold to the calculated energy value, and the determination result is used as a voice presence / absence signal. The sound is output to the audio CODEC 6.

As in the conventional case, the audio CODEC 6 is VSELP at full rate, and PS at half rate.
A speech encoding / decoding process is realized using I-CELP. In particular, speech decoding is performed on a section (frame) where a speech signal is detected in a received signal in accordance with a speech presence / absence signal from a received speech detector 20. Perform the conversion process.

In the audio decoding process, a bad frame masking process for silencing a reproduced audio signal when a frame having a code error occurs continuously and the length thereof reaches a predetermined number of frames. Included (full rate: RCR STD-27D, section 5.1.3.4,
Half rate: RCR STD-27D, 5.2.3.
See sections 4 and 5.2.4.3).

According to the present invention, the bad frame masking process of the audio decoding process in the audio CODEC 6
When the reproduced audio signal is silenced, code error information indicating the silenced frame is output from the audio CODEC 6 to the controller 8.

The controller 8 controls the general portable terminal device in the same manner as the conventional one, and also performs an operation on the voice receiving side to transmit the code error information from the voice CODEC 6 to the other party as a voice non-delivery notification signal. A non-delivery notification signal transmitting means and, as an operation of the voice transmission side, a voice non-delivery notification output means for notifying a user of the reception of the voice non-delivery notification signal when the voice non-delivery notification signal is received.

The voice non-delivery notification signal transmitting means of the controller 8 specifically receives the code error information from the voice CODEC 6 and incorporates the code error information into a user information message (refer to the standard RCR STD-27D) in call control. The notification is sent to the other party as a notification signal.

On the other hand, when the voice non-delivery notification signal is received, the voice non-delivery notification output means of the controller 8 extracts the voice non-delivery notification signal from the received layer 3 signal.
In this case, display to the user or lighting of the LED is performed, a tone signal is output from the speaker 4, or the vibrator 13 is driven for the user.

When a sound is output from the speaker 4, it is necessary to set the level of the tone signal so as not to disturb the call. In addition, the user may be notified of the reception of the voice non-delivery notification signal by a plurality of methods at the same time.

It is to be noted that the voice transmitting side of the apparatus is provided with a means for turning on / off the function of a voice non-delivery notification output means for notifying the user of the notification when the voice non-delivery notification signal is received, and can be switched. It may be. For example, the controller 8 determines ON / OFF switching input from the keyboard 1 and turns ON / OFF the sound non-delivery notification output means.

Further, both functions of the code error detecting means comprising the received voice detection by the received voice detecting means 20 and the code error information output by the voice CODEC 6 on the voice receiving side, and the voice non-delivery notification signal transmitting means by the controller 8 are provided. Means for turning ON / OFF only the latter function may be provided on the voice transmitting side so that the switching can be performed.

For example, the controller 8 receives an ON / OFF switching input from the keyboard 1 on the voice transmitting side and transmits it to the voice receiving side using a layer 3 call control user information message. Then, the received voice is detected by the received voice detector 20 and the code error information is output by the voice CODEC 6, and the controller 8 turns on / off the voice non-delivery notification signal transmitter.

Next, the operation of the non-delivery notification in this apparatus will be described with reference to FIG. In the mobile terminal device on the voice receiving side, voice from the voice transmitting side is received by the antenna 11, converted into a baseband reception signal by the wireless device 10, demodulated by the modem 9, and encoded voice data is transmitted by the channel CODEC 7. It is extracted and output to the audio CODEC 6.

Then, the coded voice data is fetched from the voice codec 6 into the received voice detector 20, and the presence / absence of a voice signal in the received signal is determined by the received voice detector 20, and the voice presence / absence signal as a result of the determination is converted to the voice codec 6 Is output to

The audio CODEC 6 performs audio decoding when an audio signal is present in the received signal, and when a code error is detected during the audio decoding, code error information is output to the controller 8. As an operation of the voice non-delivery notification signal transmitting means in the controller 8, the code error information is incorporated into a user information message in the call control and transmitted to the other party (voice transmission side) as a voice non-delivery notification signal.

When the voice transmitting side receives the voice non-delivery notification signal embedded in the user information message, the controller 8 performs the display of the LCD 2 or the output of the speaker 4 or the driving of the vibrator 13 as the operation of the voice non-delivery notification output means. It has become.

According to the portable terminal device of the present invention, when the received voice detector 20 detects a voice signal from a received signal on the voice receiving side, if a code error is detected in the voice CODEC 6, the controller 8 controls the code. The error information is incorporated in the user information message as a voice non-delivery notification signal and transmitted to the voice transmission side. When the voice transmission side receives the voice non-delivery notification signal, the LC
D2, the speaker 4, or the vibrator 13, so that the voice transmitting side can recognize that the voice of itself has not been transmitted to the other party (the voice receiving side) by the voice non-delivery notification output, and repeat the above. This has the effect of making reliable calls.

[0062]

According to the first aspect of the present invention, when a voice signal is detected from a received signal on the voice receiving side, a code error of the voice signal is detected. The mobile terminal device transmits to the voice transmitting side, receives the voice non-delivery notification signal on the voice transmitting side, and outputs the voice non-delivery notification.
By recognizing that the user's own voice is not transmitted to the other party, there is an effect that a reliable call can be made by re-statement.

According to the second aspect of the present invention, the code error detection means on the voice receiving side detects a voice signal from the received signal in units of a specific section, and detects a code error in the section where the voice signal is detected. Error information is created, the voice non-delivery notification signal transmitting means transmits the code error information as a voice non-delivery notification signal, and the voice non-delivery notification output means on the voice transmitting side receives the voice non-delivery notification signal and receives a voice non-delivery signal. Since the portable terminal device performs the notification output, the voice transmission side can confirm that the user's own voice is not transmitted to the other party by using the voice non-delivery notification output, so that the user can make a reliable call by repeating again. effective.

According to the third aspect of the present invention, the code error detecting means detects that the reproduced audio signal has been silenced when a code error is detected in the frame masking process when decoding the audio. 3. The portable terminal device according to claim 2, wherein the mobile terminal device generates error information, and the voice non-delivery notification signal transmitting means transmits the code error information as a voice non-delivery notification signal in a user information message in call control. Thus, there is an effect that a code error can be detected in the decoding that is generally performed and notified to the voice transmitting side.

According to the fourth aspect of the present invention, as the audio non-delivery notification output method in the audio non-delivery notification output means, a display indicating that the audio non-delivery notification signal has been received is provided on the display unit. Since the portable terminal device described in Item 3 is used, it is possible to visually recognize that the user's own voice is not transmitted to the other party by the display on the display unit on the voice transmitting side, and to make a reliable call by repeating again. There is.

According to the fifth aspect of the present invention, as a method of outputting a notification of a non-delivery notification in the non-delivery notification output means, a tone signal which does not disturb a conversation is output from a sounding unit. Since the portable terminal device described in the above description, it is possible to audibly recognize that the user's own voice is not transmitted to the other party by the tone signal sound output from the sounding unit of the voice transmitting side, and to ensure that the voice is repeated again. The effect is that you can make a call.

According to the invention described in claim 6, the portable terminal device according to claim 2 or 3, wherein the vibrating section outputs vibration as the sound non-delivery notice output method in the sound non-delivery notice output means. In addition, it is possible to tactually recognize that the own voice is not transmitted to the other party due to the vibration of the vibrating unit on the voice transmitting side, and it is possible to make a secure call by rephrasing.

According to the seventh aspect of the present invention, the portable terminal device according to the second to sixth aspects controls on / off of the voice non-delivery notice output means on the voice transmitting side. Turn on / off the voice non-delivery notification as required
The off-state can be controlled, and the function of the voice non-delivery notification output means can be used only when necessary such as when the line condition is poor.

According to the eighth aspect of the present invention, control is performed by inputting an on / off instruction of the voice non-delivery notification signal transmitting means on the voice receiving side from the voice transmitting side and transmitting to the voice receiving side. According to the portable terminal device of the present invention, the voice non-delivery notification signal transmitting means on the voice receiving side can be turned on / off as necessary from the voice transmitting side, and the voice non-delivery can be performed only when necessary such as when the line condition is poor. There is an effect that the function of the notification output can be used.

According to the ninth aspect of the present invention, control is performed by inputting on / off instructions of the code error detecting means and the voice non-delivery notification signal transmitting means on the voice receiving side from the voice transmitting side and transmitting the same to the voice receiving side. Since the portable terminal device according to the second to seventh aspects of the present invention, the voice transmitting side can turn on / off the code error detecting means and the voice non-delivery notification signal transmitting means on the voice receiving side as required, and the line state can be changed. There is an effect that the function of outputting the sound non-delivery notification can be used only when necessary such as bad.

According to the tenth aspect of the present invention, the transmission of the on / off instruction is carried out by incorporating it into the user information message of the call control. There is an effect that the on / off instruction can be transmitted without any change.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing a portable terminal device according to the present invention.

FIG. 2 is a configuration block diagram of a portable terminal device according to the present invention.

FIG. 3 is a configuration block diagram of a conventional portable terminal device.

[Explanation of symbols]

1 ... keyboard, 2 ... LCD, 3 ... microphone, 4 ...
Speaker, 5 ... Audio CODEC, 6,6 '...
Audio CODEC, 7 ... Channel CODEC, 8, 8 '
... Controller, 9 ... Modem, 10 ... Wireless radio, 11 ... Antenna, 12 ... Transmission voice detector, 13 ... Vibrator, 20 ... Reception voice detector

Claims (10)

[Claims] As a function of a voice receiving side, when a voice signal is detected from a received signal, a code error of the voice signal is detected, and when there is a code error, a voice non-delivery notification signal indicating a code error of the voice signal is transmitted. A mobile terminal that transmits to a voice transmitting side, receives the voice non-delivery notification signal, and outputs a voice non-delivery notification indicating reception of the voice non-delivery notification signal as a function of the voice transmitting side. apparatus. 2. As a function of the voice receiving side, a voice signal is detected in a specific section from a received signal, and a code error of the voice signal is detected in the specific section in which the voice signal is detected.
A code error detecting unit that creates code error information when there is a code error, and a voice non-delivery notification signal transmitting unit that transmits the code error information as a voice non-delivery notification signal, and as a function of a voice transmission side, A mobile terminal device comprising: a voice non-delivery notification output unit that receives a voice non-delivery notification signal and outputs a voice non-delivery notification. 3. When a code error is detected in a frame masking process when decoding a voice from a received signal in which a voice signal is detected, the code error detection means silences the reproduced voice signal. 3. The method according to claim 2, wherein the code error information is created, and the voice non-delivery notification signal transmitting means is means for incorporating the code error information as a voice non-delivery notification signal into a user information message in call control and transmitting the signal. Mobile terminal device. 4. The method according to claim 2, wherein the non-delivery notification output method in the non-delivery notification output means is a method of displaying on the display unit the reception of the non-delivery notification signal. Item 3. The mobile terminal device according to item 3. 5. The non-delivery notification output method in the non-delivery notification output means is a method of outputting a tone signal tone from the sounding unit that does not hinder a conversation. The portable terminal device according to the above. 6. The portable terminal device according to claim 2, wherein the sound non-delivery notification output method in the sound non-delivery notification output means is a method of outputting vibrations by a vibrating unit. 7. The portable terminal device according to claim 2, further comprising means for controlling on / off of a voice non-delivery notice output means on a voice transmitting side. 8. The voice transmitting side has a means for inputting an on / off instruction of a voice non-delivery notification signal transmitting means in the voice receiving side and transmitting it to the voice receiving side, and the voice receiving side transmits the transmitted voice non-delivery signal to the voice receiving side. 8. The portable terminal device according to claim 2, further comprising a unit that receives an on / off instruction and controls on / off of said voice non-delivery notification signal transmitting unit. 9. The voice transmitting side has means for inputting an on / off instruction of a code error detecting means and a voice non-delivery notification signal transmitting means in the voice receiving side and transmitting the same to the voice receiving side. 8. The apparatus according to claim 2, further comprising means for receiving said transmitted on / off instruction and controlling on / off of said code error detecting means and said voice non-arrival notification signal transmitting means. Mobile terminal device. 10. The portable terminal device according to claim 8, wherein the transmission of the on / off instruction is performed by incorporating it into a user information message for call control.