JP3984934B2 - Voice communication system and voice communication program - Google Patents

Description

  The present invention relates to an information communication technique performed between a terminal capable of performing voice communication using an externally connected communication device and a communication device connectable to the terminal.

  A portable information terminal such as a PDA (Personal Digital Assistant) can perform information communication via a network by connecting a card type device (hereinafter referred to as a communication module) that performs data communication to a card slot. become. A technique for controlling voice communication in response to a communication control signal used for voice communication performed via a network is known. (For example, refer to Patent Document 1). The communication module connected to the card slot transmits communication data received via the external network to the portable information terminal via the serial interface. Usually, the communication module does not include an audio codec. When a communication module not equipped with a voice codec is connected to a portable information terminal and voice communication is performed using the communication module, encoding / decoding of voice data to be transmitted / received is performed on the portable information terminal side.

  When a communication module not equipped with a voice codec is connected to a portable information terminal and voice communication is performed using the communication module, the voice data received by the communication module is sent to the voice input / output module of the portable information terminal via a serial interface. Sent to. The voice input / output module and the communication module perform information communication via the serial interface. The audio data transmission from the communication module is transmitted to the audio input / output module side RX signal line via the communication module side TX signal line. The audio data transmission from the audio input / output module is transmitted to the communication module RX signal line via the audio input / output module TX signal line.

  By realizing the audio data communication using the TX signal line and the RX signal line for audio data transmission / reception, bidirectional data communication is possible using the serial interface. Compared with voice communication using a telephone or the like, it is possible to realize voice communication without a sense of incongruity.

In a system in which a communication module and an audio input / output module perform information communication via a serial interface, the communication module receives audio data transmitted via a network, and the received audio data is transmitted using a TX signal line. Transmits to the voice input / output module, and at the same time, the communication module uses the RX signal line to receive the voice data transmitted from the voice input / output module, so the signal line used for data transmission / reception is occupied. A voice communication system that can transmit and receive call control signals even in the state is desired.
JP-A-5-75708

  An object of the present invention is to provide a voice communication system and a voice communication method capable of transmitting and receiving a call control signal necessary for voice communication even when a signal line used for data transmission and reception of a serial interface is occupied. It is in.

  The means for solving the problem will be described below using the numbers used in (Best Mode for Carrying Out the Invention). These numbers are added to clarify the correspondence between the description of (Claims) and (Best Mode for Carrying Out the Invention). However, these numbers should not be used to interpret the technical scope of the invention described in (Claims).

The terminal (2) and the terminal (2) are connected to the terminal (2) via the terminal side serial interface (21) and the communication device side serial interface (21), and the voice communication data received via the network is transmitted to the communication device side serial interface. A communication device (1) that outputs to the terminal (2) via (15), the communication device side serial interface (15) includes a data transmission signal line (15 ₂ ) and a data reception signal line ( 15 ₁ ), and the communication device (1) communicates with the data transmission signal line (15 ₂ ) received via the network while continuing communication with the terminal (2). A voice communication system configured to notify the terminal (2) of the control signal (S36, S41) via the other signal line (15 ₅ ) is used.

In the voice communication system, the communication device (1) is configured such that each of the data transmission signal line (15 ₂ ) and the data reception signal line (15 ₁ ) continues to communicate with the terminal (2). The voice communication system is configured to notify the terminal (2) of the communication control signals (S36, S41) received via the network via the other signal lines (15 ₅ , 15 ₄ ).

In the voice communication system, the terminal (2) further includes at least one of the data transmission signal line (15 ₂ ) and the data reception signal line (15 ₁ ) during communication with the terminal (2). In response to the communication control signals (S36, S41) notified via the other signal lines (15 ₅ , 15 ₄ ), a communication path for voice communication data transmitted / received via the network is established. A voice communication system is configured.

In the voice communication system, the communication device (1) further includes a communication unit (13) and a processing unit (14), and the communication unit (13) receives the communication control signal via the network. And output the communication control signal reception notification to the processing unit (14),
The processor (14) detects the communication status of the data transmission signal line (15 ₂ ) in response to the output, and as a result of the detection, the data transmission signal line (15 ₂ ) is continuing communication. In this case, the communication device (1) configures a voice communication system so as to notify the terminal (2) of the communication control signal via the other signal line (15 ₅ ).

In the voice communication system, further, wherein the processing unit (14), the communication status of each of the data transmission signal line in response (15 ₂₎ and said data receiving signal lines (15 ₁₎ to said reception notification If the data transmission signal line (15 ₂ ) and the data reception signal line (15 ₁ ) are in communication with the terminal (2) as a result of the detection, the communication apparatus The voice communication system is configured to notify the terminal (2) of the communication control signals (S36, S41) received via the terminal (2) using the other signal line (15 ₄ ).

In the voice communication system, the terminal (2) further includes a communication control unit (25), and the communication control unit includes the data transmission signal line (21 ₁ ) and the data reception signal line (21 _2). ) Is transmitted / received via the network in response to a communication control signal (S36, S41) notified using the other signal line while communication with the communication device (1) is continued. The voice communication system is configured to control establishment of a communication path for communication data.

  In the voice communication system, the plurality of signal lines include CD signal lines, and the communication device (1) sends the communication control signals (S36, S41) to the terminal (2) using the CD signal lines. The voice communication system is configured to notify.

  In the voice communication system, the plurality of signal lines include DSR signal lines, and the communication device (1) sends the communication control signals (S36, S41) to the terminal (2) using the CD signal lines. The voice communication system is configured so as to notify the terminal (2) of other communication control signals (S36, S41) using the DSR signal line.

  In the voice communication system, the voice communication system is configured such that the communication control signal (S36, S41) is a partner response and the other communication control signal (S36, S41) is a partner disconnection.

  In the voice communication system, the communication device (1) notifies the other party response to the terminal (2) using the CD signal line and the other party disconnection using the DSR signal line. 2), and the terminal (2) responds to reception of at least one of the partner response and the partner disconnection to control establishment of a communication path used for transmission / reception of the voice data. Configure.

Receiving audio data via a network; transmitting audio data via the network; and transmitting the received audio data to a terminal (2) via a data transmission signal line (15 ₂ ). When, step a, the data transmission signal line communication control signals over the network during communication continuation received from said transmitting voice data over the data reception signal wire (15 ₁₎ the terminal (2) (S36 , S41) and a computer-executable audio communication program comprising: a step of notifying the terminal (2) of the communication control signal (S36, S41) using another signal line The voice communication system is operated using

In the voice communication program, each of the data transmission signal line (15 ₂ ) and the data reception signal line (15 ₁ ) continues to communicate with the terminal (2), and a communication control signal ( Voice communication capable of executing by a computer a method comprising: receiving S36, S41) and notifying the terminal (2) of the communication control signal (S36, S41) via the other signal line A voice communication system is operated using a program.

In the speech communication program, the data transmission signal line (15 ₂₎ and said data receiving signal lines (15 ₁₎ of at least one of notified communication control signal using the other signal line during communication continuation In response to (S36, S41), the voice communication system is operated using a voice communication program capable of being executed by a computer, the method comprising establishing a communication path for voice communication data transmitted / received via the network To do.

In the voice communication program, the communication device (1) receives a communication control signal (S36, S41) via the network, outputs the communication control signal (S36, S41) to a processing unit, and processing unit, a step of detecting the communication status of the data transmission signal line in response (15 ₂₎ to the output, in the case of the data transmission signal line is in communication continuation, the communication device (1) is the A method of notifying the terminal (2) of the communication control signal (S36, S41) using another signal line, and operating a voice communication system using a voice communication program executable by a computer .

In the voice communication program, the processing unit detects the communication status of each of the data transmission signal line (15 ₂ ) and the data reception signal line (15 ₁ ) in response to the output; As a result of detection, when each of the data transmission signal line (15 ₂ ) and the data reception signal line (15 ₁ ) is in communication with the terminal (2), a communication control signal received via the network The voice communication system is operated using a voice communication program capable of being executed by a computer. The method includes the step of notifying (S36, S41) to the terminal (2) using the other signal line.

In the voice communication program, at least one of the data transmission signal line (15 ₂ ) and the data reception signal line (15 ₁ ) uses the other signal line while communication with the terminal (2) continues. Receiving a transmitted communication control signal (S36, S41); and controlling the establishment of a communication path for voice communication data transmitted / received via the network in response to the reception. A voice communication system is operated using a voice communication program executable by a computer.

  In the voice communication program, the communication device (1) can execute a method comprising a step of notifying the terminal (2) of the communication control signal (S36, S41) to the terminal (2) using a CD signal line. A voice communication system is operated using a simple voice communication program.

  In the voice communication program, the communication device (1) notifies the terminal (2) of the communication control signal (S36, S41) using the CD signal line, and another communication control signal (S36). , S41) is notified to the terminal (2) using the DSR signal line, and the voice communication system is operated using a voice communication program capable of being executed by a computer.

  In the voice communication program, voice communication is performed using a voice communication program that can be executed by a computer in which the communication control signal (S36, S41) is a partner response and the other communication control signal (S36, S41) is a partner disconnection. Operate the system.

  In the voice communication program, a step of notifying the other party response to the terminal (2) using the CD signal line, and a step of notifying the other party disconnection to the terminal (2) using the DSR signal line. A computer-executable voice communication program comprising: a step of controlling establishment of a communication path used for transmission and reception of the voice data in response to reception of at least one of the partner response and the partner disconnection. Use to operate the voice communication system.

  The present invention is effective in realizing a voice communication system capable of transmitting and receiving call control signals necessary for voice communication even when a signal line used for data transmission and reception of the serial interface is occupied.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

(Configuration of the embodiment)
FIG. 1 is a block diagram showing the configuration of a voice input / output module 2 and a communication module 1 used for voice communication according to the present invention. The configuration shown in FIG. 1 shows the configuration on the reception side of the present embodiment, but this does not mean that the configuration in the present embodiment is limited to the reception function only. Referring to FIG. 1, the (name) of the present invention is composed of a communication module 1 and a voice input / output module 2, each connected via a serial interface (15, 21).

  The communication module 1 further includes a radio wave antenna 11, a radio circuit unit 12, a communication processing unit 13, a central processing unit 14, a serial interface 15, and a storage unit 16. The audio input / output module 2 further includes a serial interface 21 and an audio. The encoding / decoding application 22, a voice output device 23, a voice input device 24, a central processing unit 25, and a storage unit 26 are included.

  The communication module 1 is a data communication function block capable of transmitting and receiving audio data via a network. Information communication using radio waves is possible, and the information communication function is provided to the voice input / output module 2 that does not have the information communication function. The voice input / output module 2 to which the communication module 1 is connected uses the information communication function provided in the communication module 1 for the voice uttered by the user of the voice input / output module 2 to obtain a predetermined value via the network. It can be sent to the destination.

  As shown in FIG. 1, the communication module 1 is connected to the voice input / output module 2 via a serial interface 15. The encoded voice data output from the voice input / output module 2 is input, and the encoded voice data is transmitted to another terminal connected via the network. Further, the communication module 1 receives encoded audio data transmitted from another terminal via the network and outputs it to the audio input / output module 2 via the serial interface 15.

  The radio wave antenna 11 is a transmission / reception functional block that receives encoded audio data transmitted via an information communication network and transmits the encoded audio data via the information communication network. It has a function of transmitting and receiving wireless radio waves, receives encoded voice data transmitted using wireless radio waves via a network, and outputs it to the radio circuit unit 12. Also, the encoded voice data output from the voice input / output module 2 and converted into a format that enables wireless communication by the wireless circuit unit 12 is output to the network to which the radio wave antenna 11 is connected.

  The radio circuit unit 12 is a radio circuit block. The radio wave signal received by the radio wave antenna 11 is converted into a digital signal that can be processed by the communication module 1. In addition, when transmitting the encoded audio data, the radio circuit unit 12 converts the digital signal of the encoded audio data output from the communication processing unit 13 into a signal format that can be output by radio waves, and outputs the signal format to the radio wave antenna 11.

  The communication processing unit 13 is an information processing function block. The encoded audio data converted into the digital signal output from the radio circuit unit 12 is output to the audio input / output module 2 via the serial interface 15. The encoded audio data output from the radio circuit unit 12 is output in a frame group in which a plurality of frames are combined. The communication processing unit 13 performs information processing necessary for making a frame group into each encoded audio data.

  The central processing unit 14 is an arithmetic processing function block. Connected to the communication processing unit 13 and the serial interface 15, the communication processing unit 13 received arithmetic processing necessary for determining a data transmission error of the encoded voice data output from the wireless circuit unit 12, or received during voice data communication continuation. Arithmetic processing for determining a signal line to be used when a communication control signal is output from the serial interface 15 is performed.

  The serial interface 15 is a connection function block that connects to the voice input / output module 2. A versatile connection terminal for connecting to the voice input / output module 2 via a card slot (not shown) attached to a portable information terminal such as a PDA (Personal Digital Assistant), and through the connection terminal It is physically connected to the serial interface 21 of the voice input / output module 2 to perform information communication. The serial interface 15 outputs the audio data and communication control signal output from the communication processing unit 13 to the serial interface 21 in response to an instruction from the central processing unit 14.

  The storage unit 16 is a magnetic storage medium capable of rewriting stored information. Used signal line information indicating which signal line is used for notifying the voice input / output module 2 of the communication control signal received by the communication module 1 via the network is connected to the central processing unit 14. . The central processing unit 14 searches the storage unit 16 in order to notify the voice input / output module 2 of the communication control information received via the network in response to the communication processing result performed by the communication processing unit 13. Based on the use signal line information stored in the storage unit 16 detected by this search, the result of the communication processing performed by the communication processing unit 13, and the occupation state of the plurality of signal lines of the serial interface 15, the voice input is performed. The signal line used for notifying the output module 2 of the communication control signal is determined.

  The voice input / output module 2 is an information processing terminal capable of externally connecting information communication function blocks. The encoded audio data 4 transmitted from another terminal via the network is decoded and output from the audio output device 23. Referring to FIG. 2, the voice input / output module 2 is connected to the communication module 1 via the serial interface 21. The serial interface 21 receives audio data received by the communication module 1 via the serial interface 15, decodes it into audible audio, and outputs it from the audio output device 23. In addition, the voice input from the voice input device 24 is encoded into a data format that can be transmitted and received over the network, and is output to 1 via the serial interface 21.

  The serial interface 21 is a connection function block that connects to the communication module 1. Versatile for connecting the communication module 1 to the voice input / output module 2 having a connection function of an external device represented by a card slot (not shown) attached to a portable information terminal such as a PDA (Personal Digital Assistant) The connection is made using a certain connection terminal. The serial interface 21 is physically connected to one serial interface 15 via the connection terminal to perform information communication.

  The audio encoding / decoding application 22 is an audio encoding / decoding functional block including an audio decoder 22a and an audio encoder 22b. The audio data output from the communication module 1 is decoded. In addition, an encoding process for encoding the voice input using the voice input device 24 is performed. The audio decoder 22a is a decoding function block that decodes encoded audio data. The audio data output from the communication module 1 is input, the encoded audio data is decoded, and output to the audio output device 23. The audio encoder 22b is an encoding function block that encodes input audio. The audio data output from the audio input device 24 is encoded.

  The audio output device 23 is an audio output function block. It has a function of converting an electrical signal into an audio signal and outputting it. The audio output device 23 converts the decoded audio data output from the audio encoding / decoding application 22 into an analog electric signal, converts the converted analog electric signal into audio, and outputs the audio.

  The voice input device 24 is a voice input function block. It has a function of converting input sound into an electrical signal. The voice input device 24 outputs the voice converted into the electric signal to the voice encoding / decoding application 22 as voice data.

  The central processing unit 25 is an arithmetic processing function block. When the serial interface 21 receives a communication control signal transmitted from the communication module 1 by connecting to the serial interface 21, the audio encoding / decoding application 22, and the storage unit 25, the received signal is used for normal data communication. Since the data transmission / reception signal line is in the occupied state, a calculation process is performed to determine whether the signal is a communication control signal notified using a signal line other than the data transmission / reception signal line. Further, in response to reception of the signal received by the serial interface 21, the storage unit 26 is searched, and audio input / output is performed corresponding to the signal line setting information detected as a result of the search and the signal line occupation state of the serial interface 21. How to establish the communication path between the module and the communication module is obtained by arithmetic processing, and the communication path between the communication module 1 and the voice input / output module 2 is established in accordance with the processing result.

  The storage unit 26 is a magnetic storage medium in which stored information can be rewritten. Information on signal lines of the serial interface 21 that receives the communication control signal transmitted from the communication module 1 is stored, and signals transmitted from the communication module 1 via signal lines other than the data transmission / reception signal lines of the serial interface 15 are stored. In order to determine whether the signal is a signal used in normal data communication or a communication control signal notified by using a signal line other than the data transmission / reception signal line because the data transmission / reception signal line is occupied. The signal line setting information is stored.

FIG. 2 is a diagram showing the configuration of the serial interface (15, 21) in the present embodiment. Referring to FIG. 2, the serial interface 15 on the communication module side includes a communication module side RX signal line 15 ₁ , a communication module side TX signal line 15 ₂ , a communication module side DTR signal line 15 ₃ , and a communication module side DSR signal line 15 _4. , and a communication module side CD signal line 15 _5. The voice input / output side serial interface 21 includes a voice input / output module side TX signal line 21 ₁ , a voice input / output module side RX signal line 21 ₂ , a voice input / output module side DTR signal line 21 ₃ , and a voice input / output module side DSR signal. line 21 _4, and an audio output module side CD signal line 21 _5.

Audio input and output module side TX signal line 21 ₁ is connected to the communication module side RX signal lines 15 _1, audio input and output module side RX signal line 21 ₂ is connected to the communication module side TX signal line 15 _2, the communication module side DTR The signal line 15 ₃ is connected to the voice input / output module side DTR signal line 21 ₃ , the communication module side DSR signal line 15 ₄ is connected to the voice input / output module side DSR signal line 21 _4, and the communication module side CD signal line 15 ₅ is connected. It is connected to the audio output module side CD signal line 21 _5.

Communication module side RX signal line 15 ₁ is receiving data signal line of the communication module side serial interface 15. Communication data communication module via the network, receiving from the audio output module side TX signal line 21 _1. Communication module side TX signal line 15 ₂ is the data transmission signal line of the communication module side serial interface 15. Communication module to communicate data received via the network, and transmits the audio output module side RX signal line 21 _2.

Communication module side DTR signal line 15 ₃ is the data terminal ready communication module side serial interface 15 (Data Terminal Ready). This is a signal line that tells the voice input / output module that the communication module can transmit / receive to / from the voice input / output module.

Communication module side DSR signal line 15 ₄ is a data set ready communication module side serial interface 15 (Data Set Ready). This is a signal line that tells the voice input / output module whether the communication module can transmit and receive.

Communication module side CD signal line 15 _5, the data carrier detect signal line of the communication module side serial interface 15.

Audio input and output module side TX signal line 21 ₁ is a data transmission signal line of the audio output module side serial interface 21. The communication data is audio output module via the network, and transmits to the communication module side RX signal line 15 _1. Audio input and output module side RX signal line 21 ₂ is a data reception signal line audio output module side serial interface 21. Communication module to communicate data received via the network is received from the communication module side TX signal line 15 _2.

Audio input and output module side DTR line 21 ₃ is the data terminal ready audio output module side serial interface 21 (Data Terminal Ready). This is a signal line that tells the communication module that the voice input / output module can communicate with the communication module.

Audio input and output module side DSR signal line 21 ₄ is a data set ready for voice input and output module side serial interface 21 (Data Set Ready). This is a signal line that tells the communication module whether or not the voice input / output module can transmit and receive.

Audio input and output module side CD signal line 21 _5, the data carrier detect signal line audio output module side serial interface 21.

(Operation of the embodiment)
The operation of the embodiment of the invention will be described below with reference to the drawings. FIG. 3 is a sequence diagram showing from communication start to communication establishment in the communication system of the best mode for carrying out the present invention. Referring to FIG. 3, the voice input / output module 2 provided in the portable information terminal to which the communication module 1 is connected holds a standby state of a call operation for generating voice communication in S101. The portable information terminal in the standby state displays that voice communication is waiting on the information display screen provided in the portable information terminal.

  When the mobile information terminal in the standby state performs a call operation using an operation unit (not shown) provided in the mobile information terminal in S102, the voice input / output module 2 provided in the mobile information terminal is The ATD telephone number (S31) is output to the communication module 1 in response to the call operation. The voice input / output module 2 that has output the ATD telephone number (AT command) to the communication module 1 notifies the portable information terminal of the output completion notification of the ATD telephone number (AT command), and the portable information terminal that has received the notification In response to the received notification, information indicating that the transmission is in progress is displayed on the information display screen provided in the portable information terminal.

  The communication module 1 that has input the ATD telephone number (AT command) output from the voice input / output module 2 responds to the input of the ATD telephone number (AT command) between the communication module 1 and the base station CS. In order to establish a logical communication path, call setting (S32) is transmitted to the base station CS. The base station CS that has received the call setting (S32) receives the call setting reception (S33) for notifying the establishment of a logical communication path between the communication module 1 and the base station CS. Send to. In response to the reception of the call setting, the base station CS requests the destination indicated by the ATD telephone number (AT command) to return a response of the other party.

  The communication module 1 that has received the call setting reception (S33) transmitted from the base station CS makes the reception path between the communication module 1 and the base station CS online in response to the reception of the call setting reception (S33). At the same time, CALL PROC (S34) is transmitted to the voice input / output module 2.

  The voice input / output module 2 that has received the CALL PROC (S34) transmitted from the communication module 1 turns on the reception path between the voice input / output module 2 and the communication module 1 in response to the received CALL PROC (S34). To do. When the reception path between the communication module 1 and the base station CS is brought online and the reception path between the voice input / output module 2 and the communication module 1 is turned on, the voice input / output module 2 transmits the voice data transmitted from the base station CS. Is ready to receive.

Audio input and output modules 2 which turn on reception paths, voice input and output module side RX signal line 21 ₂ is a data reception signal line audio output module side serial interface 21 is in use. Communication module 1 transmits voice communication data received via the network from the communication module side TX signal line 15 _2. Voice communication data transmitted from the communication module side TX signal line 15 ₂ is received by the voice input module side RX signal line 21 _2, normal data communication is established.

Audio input and output module side RX signal line 21 ₂ in the voice communication data received becomes a data occupation state, the communication data other than voice communication data transmitted from the communication module side TX signal line 15 ₂ can not receive unless interrupted communication It becomes a state. In response to receiving the call setting, the base station CS transmits an ATD telephone number (AT command) transmitted to the communication module 1 and transmits a partner response (S36) returned in response to the partner response reply request.

The communication processing unit 13 of the communication module 1 that has received the counterpart response (S36) transmitted from the base station CS notifies the central processing unit 14 that the counterpart response (S36) has been received. The central processing unit 14 searches the used signal line information stored in the storage unit 16 in response to the notification from the communication processing unit 13. Corresponding to the used signal line information detected as a result of the search and the occupied state of the plurality of signal lines of the serial interface 15, a signal line to be used for notification of the partner response reception notification (S37) is determined. For the communication state shown in FIG. 3, the communication module 1 opponent response reception notification using communication module side CD signal line 15 ₅ to the audio output module 2 in response to the determination of the central processing unit 14 (S37) Send. The communication module 1 that sent mating response reception notifying (S37) by using the communication module side CD signal line 15 _5, turn on the handset path between the communication module 1 and the base station CS in response to the transmission To.

Serial interface 21 of the audio input and output modules 2 that has received the opponent response reception notice transmitted (S37) from the communication module side CD signal line 15 _5, receives a mating response reception notification (S37) in response to the received This is notified to the central processing unit 25 of the voice input / output module 2. The central processing unit 25 searches the signal line setting information stored in the storage unit 26 in response to the notification from the serial interface 21, and detects the signal line setting information detected as a result of the search and the plurality of signals of the serial interface 21. Corresponding to the occupied state of the line, arithmetic processing is performed to determine whether the received signal is a communication control signal or a normal communication signal. The central processing unit 25 outputs the processing result of the arithmetic processing to the speech encoding / decoding application 22, and the speech encoding / decoding application 22 communicates with the communication module 1 according to the output processing result. Turn on the transmission / reception path of module 2.

  The communication module 1 that has received the counterpart response (S36) transmitted from the base station CS turns on the transmission / reception path between the base station CS and the communication module 1 in response to the reception. The voice input / output module 2 receiving the partner response reception notification (S37) transmitted from the communication module 1 in response to the partner response (S36) turns on the transmission / reception path between the communication module 1 and the voice input / output module 2. Put it in a state. The voice input / output module 2 transmits from the base station CS by bringing the transmission / reception path between the communication module 1 and the base station CS online and the transmission / reception path between the communication module 1 and the voice input / output module 2 online. Audio data can be received, and voice data can be transmitted from the voice input / output module to the base station.

  The voice input / output module 2 that has been able to transmit / receive voice data to / from the base station CS is turned on in the transmission / reception path of the voice input / output module, and at the same time, the other party response reception notification transmitted from the communication module 1 (S37). ) Is received, the information display screen provided in the portable information terminal indicates that voice communication is in progress.

By the communication module 1 is notified via the mating response (S36) the communication module side CD signal line 15 ₅ received, the data transmission and reception signal line is a case of the occupied state capable of transmitting and receiving a call control signal Thus, it is possible to notify the voice input / output module 2 of the other party's response without interrupting voice communication data transmission / reception.

  FIG. 4 is a sequence diagram showing an operation for shifting from the voice communication establishment state between the base station CS and the portable information terminal to the standby state in the communication system of the best mode for carrying out the present invention. Referring to FIG. 4, the voice input / output module 2 provided in the portable information terminal to which the communication module 1 is connected is in a voice communication established state in S201 and is continuing voice communication. The portable information terminal that is continuing the voice communication displays that the voice communication is being performed on the information display screen provided in the portable information terminal.

In the voice input / output module 2 during voice communication, each of the voice input / output module side TX signal line 21 ₁ and the voice input / output module side RX signal line 21 ₂ is in a data occupation state, and the voice input / output module side TX signal line 21 ₁ and the communication module side RX signal lines 15 ₁ to be connected with, there is naturally the data occupancy state even communication module side TX signal line 15 ₂ to be connected to the audio output module side RX signal line 21 _2.

The base station CS that has received the partner disconnection (S41) via the network during the voice communication transmits the received partner disconnection (S41) to the communication module 1. The communication module 1 that has received the partner disconnection (S41) transmitted from the base station CS turns off the transmission / reception path between the communication module in the on state and the base station CS in response to the reception. In addition, the communication module 1 sends a partner disconnect reception notification (S42) to the voice input / output module 2 in order to notify the voice input / output module 2 that the partner disconnect (S41) has been received in response to the reception of the partner disconnect (S41). transmitting the audio input and output modules 2 using a signal line 15 _4.

  The voice input / output module 2 that has received the partner disconnection reception notification (S42) transmitted from the communication module 1 turns off the transmission / reception path between the voice input / output module 2 and the communication module 1 in response to the reception. The voice input / output module 2 responds to the reception of the other party disconnection reception notification (S42), and displays the voice communication standby display information that is displayed on the information display screen provided in the portable information terminal. Change to the displayed information and display.

By sending via the communication module side DSR signal line 15 ₄ opponent cleavage communication module 1 is received during voice communication (S42), even for data transmission and reception signal line is a case of occupancy of the call control signal Transmission / reception becomes possible, and it becomes possible to notify the voice input / output module 2 of the disconnection without interrupting data transmission / reception.

Mating response reception notification in the best mode contemplated for carrying out this invention has been described above (S37) is notified to the audio input and output modules via the communication module side CD signal line 15 _5. Further, mating cut reception notification (S42) is notified to the audio input and output modules using the communication module side DSR signal line 15 _4. Mating response reception notification is notified from the communication module (S37) and the signal lines used in the counterpart cut reception notification (S42) includes a communication module side CD signal line 15 _5, but only the communication module side DSR signal line 15 ₄ Not. Serial interface used in the present invention, the communication module side CD signal line 15 _5, in addition to the communication module side DSR signal line 15 _4, the communication module side RTS line has a communication module side CTS signal line In this case, the partner response reception notification (S37) and the partner disconnection reception notification (S42) can be notified using any of the four signal lines described above.

  Even when a serial interface having more signal lines is used, the other party's response reception notification (S37) and the other party disconnection reception notification (S42) are notified to the voice input / output module 2 using any signal line. Is possible. In such a case, by changing the used signal line information stored in the storage unit 16 of the communication module 1 and the signal line setting information stored in the storage unit 26 of the voice input / output module 2, a partner response reception notification ( It is possible to determine the signal line used for S37) and the other party disconnection reception notification (S42), and the present invention can be realized without changing the physical connection.

FIG. 1 is a block diagram showing the configuration of the best mode for carrying out the present invention. FIG. 2 is a diagram showing the configuration of the serial interface in the best mode for carrying out the present invention. FIG. 3 is a sequence diagram showing from communication start to communication establishment in the communication system of the best mode for carrying out the present invention. FIG. 4 is a sequence diagram showing from communication establishment to standby state in the communication system of the best mode for carrying out the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Communication module 11 Radio wave antenna 12 Wireless circuit part 13 Communication processing part 14 Central processing unit 15 Serial interface 15 ₁ Communication module side RX signal line 15 ₂ Communication module side TX signal line 15 ₃ Communication module side DTR signal line 15 ₄ Communication Module side DSR signal line 15 ₅ Communication module side CD signal line 16 Storage unit 2 Audio input / output module 21 Serial interface 21 ₁ Audio input / output module side TX signal line 21 ₂ Audio input / output module side RX signal line 21 ₃ Audio input / output module side DTR line 21 ₄ audio output module side DSR signal line 21 ₅ audio output module side CD signal line 22 speech coding and decoding applications 22a audio decoder 22b speech encoder 23 audio output device 24 a voice input Location 25 central processing unit 26 storage unit CS base station

Claims (10)

A terminal,
A communication device connected to the terminal via a serial interface and outputting voice communication data received via a network to the terminal via the serial interface;
Comprising
The serial interface has a plurality of signal lines including a data transmission signal line and a data reception signal line,
The communication apparatus notifies a communication control signal received via a network while the data transmission signal line is in communication with the terminal to the terminal via another signal line. The voice communication system according to claim 1,
The communication apparatus receives a communication control signal received via the network while the data transmission signal line and the data reception signal line are continuously communicating with the terminal via the other signal line. A voice communication system that notifies terminals. The voice communication system according to claim 2,
The terminal responds to a communication control signal notified through the other signal line while at least one of the data transmission signal line and the data reception signal line is communicating with the terminal, and the terminal A voice communication system that establishes a communication path for voice communication data transmitted and received via the network. The voice communication system according to claim 1,
The communication device includes a communication unit and a processing unit,
In response to receiving the communication control signal via the network, the communication unit outputs a reception notification to the processing unit,
The processing unit detects a communication status of the data transmission signal line in response to the output,
As a result of the detection, when the data transmission signal line is in communication, the communication apparatus notifies the terminal of the communication control signal via the other signal line. The voice communication system according to claim 4.
The processing unit detects the communication status of each of the data transmission signal line and the data reception signal line in response to the output,
When each of the data transmission signal line and the data reception signal line is in communication with the terminal, the communication control signal received via the network is notified to the terminal using the other signal line. Voice communication system. The voice communication system according to claim 5.
The terminal includes a communication control unit,
The communication control unit receives a communication control signal notified using the other signal line while at least one of the data transmission signal line and the data reception signal line of the terminal continues communication with the communication device. A voice communication system that controls establishment of a communication path for voice communication data transmitted and received via the network in response. The voice communication system according to any one of claims 1 to 6,
The plurality of signal lines include CD signal lines;
The communication apparatus notifies the terminal of the communication control signal using the CD signal line. The voice communication system according to claim 7.
The plurality of signal lines include DSR signal lines;
The communication apparatus notifies the terminal of the communication control signal using the CD signal line, and notifies the terminal of another communication control signal using the DSR signal line. The voice communication system according to claim 8.
The voice communication system, wherein the communication control signal is a partner response, and the other communication control signal is a partner disconnection. The voice communication system according to claim 9.
The communication device notifies the terminal of the partner response using the CD signal line, and notifies the terminal of the partner disconnection using the DSR signal line,
The said terminal controls establishment of the communication path used for transmission / reception of the said audio | voice data in response to reception of at least one of the other party response and the other party disconnection.

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