JP2009272717A - Conference call terminal unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a burden imposed on a user before and after a conference call when utilizing a television receiver for broadcast as a monitor to perform a television telephone conference. <P>SOLUTION: Before the start of television telephone communication, a counter 122 of the number of input change instructions counts and holds the number of operation times of an outgoing call button 221 and an incoming call button 222 operated to change the input terminal of the television receiver TV for broadcast. After the completion of the television telephone communication, a counted value held by the counter 122 of the number of input change instructions is subtracted from the total number of input terminals retained by the television receiver TV for broadcast, and an infrared remote control emission section RO transmits an infrared signal for input terminal change instructions to the television receiver TV for broadcast by the number of times corresponding to a value after the subtraction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a conference call terminal device that uses a broadcast television receiver as a monitor.

  In recent years, with the development of networks and technologies that support the information sharing society, such as the rapid spread and expansion of IP (Internet Protocol) networks such as the Internet and the speeding up of networks, televisions have been used in various fields such as school education and business. Various conference call terminal devices that enable telephone conferences have been developed. However, this type of device generally requires a conference-specific monitor. For this reason, there is a problem that the apparatus is large and expensive.

  In view of this, an apparatus that uses a broadcast television receiver as a monitor has been proposed. With such a device, an existing broadcast television receiver can be used as a monitor, so that the device can be made inexpensive (see, for example, Non-Patent Document 1).

WPC EXPO 2003 report “STB that can make IP videophone calls”, Sumitomo Electric, <URL: http://plused.itmedia.co.jp/broadband/0309/17/lp19.html>

  However, in the apparatus described in Non-Patent Document 1, the existing broadcast television receiver and the conference call terminal apparatus operate independently. For this reason, when a video conference call is performed, the input terminal is switched after turning on the power of the broadcasting television receiver so that the output video of the conference call terminal device is displayed on the monitor. Separately from this, it is necessary to perform a call connection operation for turning on the power of the conference call terminal device and starting the video conference call.

Further, when the conference call is terminated, an operation for turning off the power after performing the call disconnecting operation for terminating the video conference call in the conference call terminal device and further turning off the power of the broadcasting television receiver. Must be done. Furthermore, the input source of the broadcast television receiver is maintained as the conference call terminal device simply by turning off the power of the broadcast television receiver. For this reason, when the user subsequently wants to watch the television broadcast with the broadcast television receiver, an operation of switching the input source from the conference call terminal device to the television receiver is required.
That is, before and after the start of the conference call, it is necessary to separately operate the conference call terminal device and the broadcast television receiver, which is extremely troublesome.

  The present invention has been made paying attention to the above circumstances, and the object of the present invention is before the start and after the end of a conference call when a television conference call is performed using a broadcast television receiver as a monitor. It is an object of the present invention to provide a conference call terminal device that reduces the operation burden on the user.

  To achieve the above object, according to a first aspect of the present invention, there is provided a remote control receiving unit for receiving a remote control signal for television reception operation control transmitted from a remote controller, and a plurality of inputs to which different input sources are connected. And a conference call terminal device connected to one of the input terminals and used for a remote control receiver of the broadcast television receiver. A remote control transmission unit for transmitting a pseudo remote control signal equivalent to the remote control signal transmitted from the remote controller is newly provided. And when the operation of the call button is accepted before the input of the telephone number, the first remote control code for switching the input source of the broadcast television receiver is generated for each operation, When the remote control signal corresponding to the first remote control code is transmitted from the remote control transmitter, and the operation of the call button is accepted after the telephone number is input, the other party is called based on the input telephone number. The transmission processing for the terminal device is executed.

  Therefore, when the caller operates the call button prior to inputting the telephone number, a remote control signal for switching the input source of the broadcasting television receiver is transmitted from the remote control transmission unit for each operation, thereby Switching takes place. That is, it is possible to automatically identify and input both a call connection instruction for outgoing call and an instruction to switch the input source of the broadcast television receiver by operating the outgoing call button. For this reason, when the caller starts a conference call, it is not necessary to separately operate the remote controller of the broadcast television receiver to switch the input source, and the operation burden is reduced accordingly.

  The first aspect of the present invention is characterized by further comprising the following functions. In other words, the input terminal switching function of a general broadcast television receiver is such that the input terminal is sequentially switched each time the input terminal is switched, and the input terminal is further switched while the last input terminal is selected. A so-called circulation switching system is adopted in which the operation is switched to the first input terminal when an operation is performed. Therefore, paying attention to this point, the number of operations of the call button for the purpose of switching the input terminal is counted and the count value is held, and after the conference call with the terminal device of the other party is completed, Based on the total number of input terminals to which the input source is connected and the count value of the number of operations of the held transmission button, the input source of the broadcasting television receiver is restored to the input source before switching. Therefore, the number of second remote control codes necessary for the generation is generated, and the remote control signal corresponding to the generated second remote control code is transmitted from the remote control transmission unit.

  Therefore, after the conference call ends, a remote control signal for restoring the input source of the broadcast television receiver to the input source before switching is automatically transmitted as many times as necessary, and the input source of the broadcast television receiver is The state before the conference call is automatically restored. For this reason, even after the conference call ends, the caller does not need to separately operate the remote controller of the broadcast television receiver to switch the input source.

  According to a first aspect of the present invention, in addition to the above components, an incoming call response process is executed when an incoming button operation is received during an incoming call notification operation, while an incoming call button operation is received after the incoming call response process. When the operation is performed, a third remote control code for switching the input source of the broadcast television receiver is generated for each operation, and a remote control signal corresponding to the third remote control code is transmitted to the remote control transmission unit. The device further includes means for transmitting.

  At the same time, the number of operations of the incoming call button is counted after the incoming call response process, and the counted value is held. After the conference call with the terminal device of the call partner is completed, the input terminal connected to the input source is connected. Based on the total number and the count value of the held number of operations of the incoming call button, the number of fourth remote controllers required to restore the input source of the broadcast television receiver to the input source before switching. It is also characterized by further comprising means for generating a control code and transmitting a remote control signal corresponding to the generated fourth remote control code from the remote control transmitter.

  In this way, not only at the time of outgoing call but also at the time of incoming call, both the call connection instruction for incoming call response and the input source switching instruction of the broadcasting television receiver are automatically identified by operating the incoming call button. Can be input. For this reason, when a callee starts a conference call, it is not necessary to switch the input source by separately operating the remote controller of the broadcast television receiver, and the operation burden is reduced accordingly.

  In addition, after the conference call ends, the remote control signal for restoring the input source of the broadcast television receiver to the input source before switching is automatically transmitted as many times as necessary, and the input source of the broadcast television receiver is set to the conference. The state before the call is automatically restored. For this reason, even after the conference call ends, the callee does not need to separately operate the remote controller of the broadcast television receiver to switch the input source.

  In order to achieve the above object, a second aspect of the present invention provides a pseudo remote control signal equivalent to a remote control signal transmitted from a remote controller for television toward a remote control receiver of a broadcast television receiver. A remote control transmitter for transmitting is newly provided. Each time the operation of the switch button is accepted, a first remote control code for switching the input source of the broadcast television receiver is generated, and a remote control signal corresponding to the first remote control code is generated. Is transmitted from the remote control transmitter, and on the other hand, when the operation of the call button is accepted after the input of the telephone number, the call processing for the terminal device of the other party is executed based on the input telephone number. .

  Along with that, the number of operations of the switching button is counted and the count value is retained, and after the conference call with the terminal device of the other party, the total number of input terminals to which the input source is connected, The number of second remote control codes necessary to restore the input source of the broadcast television receiver to the input source before the switching based on the count value of the number of times of operation of the switching button held. And generating a remote control signal corresponding to the generated second remote control code from the remote control transmitter.

  Therefore, when the switch button is operated, a remote control signal for switching the input source of the broadcast television receiver is transmitted from the remote control transmission unit for each operation, and the input source is switched. For this reason, when the caller starts a conference call, it is not necessary to separately operate the remote controller of the broadcast television receiver to switch the input source, and the operation burden is reduced accordingly.

  At the same time, after the conference call ends, the remote control signal for restoring the input source of the broadcast television receiver to the input source before switching is automatically transmitted as many times as necessary, and the input of the broadcast television receiver is made. The source is automatically restored to the state before the conference call. For this reason, even after the conference call ends, the caller does not need to separately operate the remote controller of the broadcast television receiver to switch the input source.

  A second aspect of the present invention, in addition to the above-described components, executes an incoming call response process when an operation of the incoming call button is accepted during an incoming call notification operation, while the switching button is operated before and after the incoming call response process. When the operation is performed, a third remote control code for switching the input source of the broadcast television receiver is generated for each operation, and a remote control signal corresponding to the third remote control code is generated. A means for transmitting from the remote control transmitter is further provided.

  At the same time, the number of operations of the switch button before and after the incoming call response process is counted and the count value is held, and after the conference call with the terminal device of the other party is finished, the input to which the input source is connected On the basis of the total number of terminals and the count value of the number of operations of the held switching button, the fourth number necessary to restore the input source of the broadcasting television receiver to the input source before switching. The remote control code is further generated, and a remote control signal corresponding to the generated fourth remote control code is transmitted from the remote control transmitter.

  In this way, not only at the time of outgoing call but also at the time of incoming call, an instruction to switch the input source of the broadcast television receiver is input by operating the switch button. This eliminates the need for the callee to separately operate the remote controller of the broadcast television receiver to switch the input source, thereby reducing the operation burden.

  At the same time, after the conference call ends, the remote control signal for restoring the input source of the broadcast television receiver to the input source before switching is automatically transmitted as many times as necessary, and the input of the broadcast television receiver is input. The source is automatically restored to the state before the conference call. For this reason, even after the conference call ends, the callee does not need to separately operate the remote controller of the broadcast television receiver to switch the input source.

  In order to achieve the above object, a third aspect of the present invention provides a pseudo remote control signal equivalent to a remote control signal transmitted from a remote controller for television toward a remote control receiver of a broadcast television receiver. A remote control transmitter for transmitting is newly provided. Then, when the operation of the call button is accepted before inputting the telephone number, a first remote control code for switching the input source of the broadcast television receiver is generated, and the generated first remote control code is generated. A remote control signal corresponding to the remote control code is repeatedly transmitted from the remote control transmission unit as many times as necessary to select the conference call device among the plurality of input sources. On the other hand, when the operation of the call button is accepted after the telephone number is input, the call processing for the terminal device of the other party is executed based on the input telephone number.

  Along with that, the number of transmissions of the remote control signal necessary for selecting the conference call device is held, and after the conference call with the other party's terminal device is ended, based on the held required number of times, The number of second remote control codes necessary to restore the input source of the broadcast television receiver to the input source before switching is generated, and the remote control corresponding to the generated second remote control code is generated. The signal is transmitted from the remote control transmission unit.

  Therefore, when the caller operates the call button prior to entering the telephone number, a remote control signal for switching the input source of the broadcasting television receiver is transmitted from the remote control transmitter as many times as necessary, thereby switching the input source. Is done. That is, it is possible to automatically identify and input both a call connection instruction for outgoing call and an instruction to switch the input source of the broadcast television receiver by operating the outgoing call button. This eliminates the need for the caller to separately operate the remote controller of the broadcast television receiver to switch the input source. Moreover, since the remote control signal is automatically transmitted as many times as necessary by operating the transmission button once, the number of operations of the transmission button can be reduced, and the operation burden is further reduced accordingly.

  At the same time, after the conference call is finished, a remote control signal for restoring the input source of the broadcast television receiver to the input source before switching is automatically transmitted as many times as necessary. The input source is automatically restored to the state before the conference call. For this reason, even after the conference call ends, the caller does not need to separately operate the remote controller of the broadcast television receiver to switch the input source.

  According to a third aspect of the present invention, in addition to the above components, an incoming call response process is executed when an operation of the incoming call button is accepted during an incoming call notification operation, and in parallel therewith, the broadcast television receiver To generate a third remote control code for switching the input source, and to select the conference call device from among the plurality of input sources with a remote control signal corresponding to the generated third remote control code And a means for repeatedly transmitting from the remote control transmitter a required number of times.

  In addition, the number of transmissions of the remote control signal necessary for selecting the conference call device is held, and after the conference call with the terminal device of the call partner is completed, based on the held required number, The number of fourth remote control codes necessary to restore the input source of the broadcast television receiver to the input source before switching is generated, and the remote control corresponding to the generated fourth remote control code is generated. It is further characterized by further comprising means for transmitting a signal from the remote control transmitter.

  In this way, not only at the time of outgoing call but also at the time of incoming call, the operation of the incoming call button automatically identifies both the call connection instruction for incoming call response and the input source switching instruction of the broadcast television receiver. Can be input. This eliminates the need for the callee to separately operate the remote controller of the broadcast television receiver to switch the input source. In addition, since the remote control signal is automatically transmitted as many times as necessary by operating the incoming button once, the number of times of operating the incoming button can be reduced, and the operation burden is further reduced accordingly.

  At the same time, after the conference call is finished, a remote control signal for restoring the input source of the broadcast television receiver to the input source before switching is automatically transmitted as many times as necessary. The input source is automatically restored to the state before the conference call. For this reason, even after the conference call ends, the callee does not need to separately operate the remote controller of the broadcast television receiver to switch the input source.

  According to a fourth aspect of the present invention, information indicating the power on / off state of the broadcast television receiver before a conference call is started is stored. Then, after the conference call ends, based on the stored information indicating the power on / off state, the broadcasting television receiver before the conference call is started is turned on or off. And when the power is off, after the transmission of the remote control signal corresponding to the second or fourth remote control code is completed, the broadcast television receiver is turned off. 5 remote control codes are generated, and a remote control signal corresponding to the generated fifth remote control code is transmitted from the remote control transmitter.

  Therefore, if the broadcast television receiver is in the power-off state before the start of the conference call, the process of automatically restoring the input source of the broadcast television receiver to the state before the conference call is performed after the conference call ends. After that, the power of the broadcasting television receiver is automatically turned off. For this reason, the user does not need to separately operate the remote controller of the broadcast television receiver after the conference call and restore the input source and turn off the power, thereby further reducing the operation burden.

  In short, according to the present invention, a conference call that reduces the user's operational burden before and after the start of a conference call when a television conference call is performed using a broadcast television receiver as a monitor. A terminal device can be provided.

Embodiments according to the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram showing a system configuration of a television telephone terminal apparatus TMS, which is a conference call terminal apparatus according to the first embodiment of the present invention, and its peripheral part.
In the figure, a broadcast television receiver TV includes a monitor 1 made of, for example, a liquid crystal display, a speaker 2 for audio output, a remote controller (hereinafter abbreviated as a remote controller) light receiving unit 3, and three input terminals IN1. , IN2, IN3. An antenna AT is connected to the input terminal IN1 via a coaxial cable CR. A video deck VD is connected to the input terminal IN2 via a video cable CV and an audio cable CA. A videophone terminal (hereinafter abbreviated as a videophone terminal) TM is connected to the input terminal IN3 via a video cable CV and an audio cable CA.

The videophone terminal device TMS is composed of a videophone terminal TM, a remote control RC for the videophone terminal, and an infrared remote control light emitting unit RO.
The infrared remote control light emitting unit RO has a function of transmitting the same infrared signal as a remote control (not shown) attached to the broadcast television receiver TV, and the remote control light receiving unit 3 of the broadcast television receiver TV. It is installed in the position which opposes optically.

  The remote controller RC for the video phone terminal has a function of transmitting an infrared signal different from the infrared signal transmitted by the infrared remote controller light emitting unit RO, and its operation surface has an infrared light emitting unit 21 as shown in FIG. In addition, a button group 22 for operating a videophone terminal, a button 23 for inputting a telephone number, and a button group 24 for broadcasting television operation are arranged. The button group 22 for videophone terminal operation includes a call button 221, an incoming call button 222, and a disconnect button 223. The broadcast television operation button group 24 includes a television power button 241.

The videophone terminal TM is the core for realizing the present invention, and is configured as follows. FIG. 2 is a block diagram showing the configuration.
That is, the videophone terminal TM is constituted by, for example, a personal computer, an infrared remote control receiving unit 11 as a user input interface unit, an application control unit 12, a call (SIP) control unit 13, a communication protocol processing unit 14, A network interface unit 15, an audio processing unit 16, a video processing unit 17, and a remote control code determination unit 18 are provided.

The infrared remote control receiving unit 11 receives the infrared signal transmitted from the videophone terminal remote control RC and transmits the code data of the received infrared signal to the application control unit 12.
The application control unit 12 comprehensively controls the operation of the terminal according to an application program stored in a ROM or the like. The call (SIP) control unit 13 executes a series of protocol processes related to call connection by SIP.

  The communication protocol processing unit 14 creates an IP packet related to SIP in accordance with an instruction from the call (SIP) control unit 13. Also, an IP packet including the encoded audio signal output from the audio processing unit 16 and an IP packet including the encoded video signal output from the video processing unit 17 are created. Then, these created IP packets are transferred to the network interface unit 15, and from the network interface unit 15 to a communication network (not shown) according to TCP (UDP) / IP (Transmission Control Protocol (User Datagram Protocol) / Internet Protocol). Execute the process to send.

  Further, the communication protocol processing unit 14 analyzes the IP packet received from the communication network via the network interface unit 15 and performs TCP (UDP) / IP processing, and sends information on the IP packet regarding the SIP to the call (SIP) control unit 13. A process of transferring, a process of transferring an encoded audio signal inserted in an IP packet related to audio to the audio processing unit 16, and a process of transferring an encoded video signal inserted in an IP packet related to video to the video processing unit 17. Run each one.

  The network interface unit 15 converts the IP packet created by the communication protocol processing unit 14 into a transmission frame corresponding to, for example, Ethernet (registered trademark) by adding a MAC address or the like, and transmits the transmission frame to the communication network. A process of transmitting and a process of extracting an IP packet from a transmission frame corresponding to Ethernet (registered trademark) received from the communication network and transferring the extracted IP bucket to the communication protocol processing unit 14 are executed.

  The audio processing unit 16 performs audio encoding on the analog audio signal output from the microphone 161 according to G.711 and then outputs the encoded audio signal to the communication protocol processing unit 14 and the encoded audio signal transferred from the communication protocol processing unit 14. A process of decoding an analog audio signal according to G.711 and outputting it to an audio output terminal 162, an echo cancellation process between the microphone 161 and the speaker 2 of the broadcast television receiver TV, an audio input level and an output level Each of the processes for adjusting is executed.

  The video processing unit 17 encodes the analog video signal output from the video camera 171 according to H.264 and then outputs the encoded video signal transferred from the communication protocol processing unit 14 to the communication protocol processing unit 14. A process of decoding into an analog video signal according to H.264 and then outputting to the video output terminal 172 and a process of adjusting the brightness of each analog video signal are executed.

  Incidentally, the application control unit 12 has a control function for transmitting a remote control signal to the broadcast television receiver TV, in addition to the control function related to call connection control, as a control function related to the present invention. The control function for transmitting the remote control signal includes a control function for switching the input terminal of the broadcast television receiver TV before the start of the videophone communication, and a broadcast television receiver after the end of the videophone communication. Control function (input terminal initialization unit 125) for restoring the input terminal of the TV to the state selected before the videophone, and reception of the broadcast television after the input terminal switching state is restored by the input terminal initialization unit 125 A control function for turning off the power of the computer TV is included.

  In addition, the application control unit 12 includes an input switching instruction number counter 122, a TV model holding memory 123, and an input terminal total number search as circuits necessary for realizing each control function for transmitting the remote control signal. Tables 124 are connected to each other.

  The input switching instruction number counter 122 is used to count the number of operations of the transmission button 221 and the incoming button 222 of the videophone terminal remote controller RC for the purpose of switching the input terminal of the broadcast television receiver TV. The TV model holding memory 123 stores information indicating the names of all manufacturers and models of broadcast television receivers TV that are assumed to be connected to TV telephone terminals.

  The input terminal total number search table 124 stores information indicating the total number of input terminals held by the broadcast television receiver TV in association with all models of the broadcast television receiver TV. An example is shown in FIG. For example, the total number of input terminals “5” is stored in association with the model “A-A” of “Company”, and the total number of input terminals “3” is stored in association with the model “I-B” of “Company”. Has been.

A control function related to call connection control and a control function for transmitting a remote control signal execute various processes as described below.
(1) When the TV remote control RC for TV phone terminal is notified by the infrared remote control receiver 11 that the TV power button 241 has been pressed, an instruction for turning on the power of the TV receiver for broadcasting TV is provided. The data is output to the determination unit 18.
(2) When the infrared remote control receiving unit 11 notifies that the call button 221 of the videophone terminal remote control RC has been pressed before inputting the telephone number, the broadcast television reception is received each time the notification is received. An instruction to switch the input terminal of the computer TV is output to the remote control code determination unit 18. At the same time, the count value of the input switching instruction number counter 122 is incremented every time a notification of pressing the transmission button 221 is received once. That is, the input switching instruction number counter 122 counts the number of times the call button 221 of the videophone terminal remote controller RC is pressed before the telephone number is input.
(3) When the infrared remote control receiver 11 is notified that the call button 221 of the videophone terminal remote control RC has been pressed after the telephone number is input, the input telephone number and call instruction are called (SIP ) Notify the control unit 13.
(4) When the infrared remote control receiving unit 11 notifies that the incoming call button 222 of the videophone terminal remote control RC is pressed during the output of the incoming ringing tone, the off-hook instruction is notified to the call (SIP) control unit 13 To do.
(5) When the infrared remote control receiver 11 is notified that the incoming call button 222 of the videophone terminal remote control RC has been pressed after the off-hook process, every time the notification is received, the broadcast television receiver TV Are input to the remote control code determination unit 18. At the same time, the count value of the input switching instruction number counter 122 is incremented each time a notification of pressing of the incoming call button 222 is received once. That is, the input switching instruction number counter 122 counts the number of times the incoming call button 222 of the videophone terminal remote controller RC after the off-hook processing is pressed.
(6) After the videophone communication is completed, information indicating the model of the broadcast television receiver TV connected to the videophone terminal device TMS is read from the TV model holding memory 123, and the information indicating the read model is searched. The input terminal total number search table 124 is searched as described above, and information representing the total number of input terminals held by the broadcast television receiver TV is read. At the same time, the count value of the number of times the call button 221 or the call button 222 is pressed is read from the input switching instruction number counter 122. Then, the count value of the number of times of pressing is subtracted from the total number of input terminals, and the input terminal switching instruction of the broadcast television receiver TV is output to the remote control code determination unit 18 by the number corresponding to the value after the subtraction. .
(7) Information indicating the power on / off state of the television receiver for broadcasting TV before videophone communication is started is stored in the internal memory, and after the videophone communication is completed, the stored power Based on the information indicating the on / off state, it is determined whether the power of the broadcast television receiver TV before the conference call is started is on or off. When it is determined that the power is off, after the output of the input terminal switching instruction according to the above (6) is finished, an instruction for turning off the power of the broadcasting television receiver TV is output to the remote control code determination unit 18. To do.

  The remote control code determination unit 18 includes a remote control code generation processing unit. Further, a remote control code search table 121 is connected to the remote control code determination unit 18. Remote control code search table 121 stores a remote control code for turning on / off power and a remote control code for switching input terminals in association with information representing the manufacturer name of broadcast television receiver TV. Yes. An example is shown in FIG. For example, the remote control code for turning on / off the broadcast television receiver TV of the manufacturer name “A” is “0x0A01”, and the remote control code for switching the input terminal is “0x0A02”.

  The remote control code determination unit 18 reads in advance information representing the manufacturer name stored in the TV model holding memory 123 from the application control unit 12. Then, when a remote control code generation instruction is sent from the application control unit 12, the corresponding remote control code is read from the remote control table search table 121 based on the content of the instruction and the information indicating the manufacturer name. The infrared remote control light emitting unit RO is supplied to transmit an infrared signal.

Next, an operation when videophone communication is performed between the user A and the user B using the videophone terminal apparatus TMS configured as described above will be described. FIG. 6 is a sequence diagram showing the operation procedure.
In this embodiment, the user A uses the broadcasting television receiver of the model “A-C” of the manufacturer “A”, while the user B uses the model “I-B” of the manufacturer “I”. The explanation will be made assuming that the broadcasting television receiver is used. This use condition is the same in the second and third embodiments described later.

  The user A on the calling side first presses the TV power button 241 on the videophone terminal remote controller RC (step S1). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. Upon receiving the code data, the application control unit 12 outputs a remote control code generation instruction for turning on the power of the broadcast television receiver TV to the remote control code determination unit 18 and turns on the power stored in the internal memory. / Set the information indicating the off state to “power off”. Hereafter, each time the television power button 241 is pressed, the information indicating the power on / off state is alternately set between “power on” and “power off”.

  At this time, the remote control code determination unit 18 is given in advance identification information representing the manufacturer name “A” stored in the television model holding memory 123 from the application control unit 12. For this reason, the remote control code determination unit 18 responds to the corresponding power supply from the remote control code search table 121 according to the identification information representing the manufacturer name “A” and the remote control code generation instruction sent from the application control unit 12. The remote control code “0x0A01” for control is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to turn on the broadcasting television receiver TV.

  The infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned on in response to this infrared signal. At this time, in the broadcast television receiver TV, since the broadcast signal of the input terminal IN1 is set as a default as an input source, the received video of the broadcast is displayed on the monitor 1.

  Next, the user A presses the call button 221 on the videophone terminal remote controller RC (step S2). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. At this time, since the application control unit 12 has received the operation code data of the call button 221 before inputting the telephone number, the operation of the call button 221 is recognized as an instruction to switch the input terminal of the broadcast television receiver TV. To do. Then, a remote control code generation instruction for instructing switching of the input terminal is output to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 increments the count value of the input switching instruction number counter 122 by one according to the operation of the transmission button 221. That is, the count value indicating the number of operations of the call button 221 is changed from “0” to “1”.

  The remote control code determination unit 18 responds to the corresponding remote control from the remote control code search table 121 according to the previously acquired identification information representing the manufacturer name “A” and the remote control code generation instruction sent from the application control unit 12. The code “0x0A02” is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, an infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted from the infrared remote controller light emitting unit RO. When the infrared signal is received by the remote control receiver 3, the broadcast television receiver TV monitors the video from the video deck VD connected to the input terminal IN2 instead of the broadcast received video displayed on the monitor 1 until then. 1 is displayed.

  Further, it is assumed that the user A presses the call button 221 again or keeps pressing the button on the videophone terminal remote controller RC (step S3). In this case, when the application control unit 12 receives the code data representing the operation of the transmission button 221 from the infrared remote control receiving unit 11, the remote control for instructing switching of the input terminal of the broadcast television receiver TV in response thereto. The code generation instruction is output again to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 further increments the count value of the input switching instruction number counter 122 by one in response to the re-operation of the transmission button 221. That is, the count value indicating the number of operations of the call button 221 is changed from “1” to “2”.

  When the remote control code generation instruction is output, the remote control code determination unit 18 supplies the remote control code “0x0A02” corresponding to the input terminal switching instruction to the infrared remote control light emitting unit RO. An infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted again. Therefore, in the broadcast television receiver TV, the video from the videophone terminal TM connected to the input terminal IN3 is displayed on the monitor 1 instead of the video from the video deck VD that has been displayed on the monitor 1 until then.

  Next, the user A presses the telephone number input button 23 to input the telephone number of the user B on the videophone terminal remote controller RC, and then presses the call button 221 (step S4). Then, since the application control unit 12 receives the operation code data of the call button 221 after inputting the telephone number, the application control unit 12 recognizes the operation of the call button 221 as a call instruction, and sends the call instruction together with the input telephone number. The call (SIP) control unit 13 is notified. As a result, the call (SIP) control unit 13 executes SIP transmission processing and transmits an INVITE request message to the user B's television telephone terminal TM.

On the other hand, the following operation is performed in the television telephone terminal TM of the user B on the receiving side.
That is, when the call (SIP) control unit 13 receives the INVITE request message, an incoming ringing tone is generated from a sounder (not shown) provided in the television telephone terminal TM under the control of the application control unit 12. . In this state, it is assumed that the user B presses the incoming call button 222 on the videophone terminal remote controller RC (step S5). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. At this time, the application control unit 12 receives the operation code data of the incoming call button 222 during the output of the incoming ringing tone. Therefore, the application control unit 12 recognizes the operation of the incoming call button 222 as an off-hook instruction and calls the off-hook instruction (SIP). Notify the control unit 13. As a result, the call (SIP) control unit 13 executes SIP incoming response processing, and a 200 OK message that is a response to the INVITE request message is transmitted to the user A's television telephone terminal TM.

  Next, the user B presses the TV power button 241 on the TV phone terminal remote controller RC (step S6). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. Upon receiving the code data, the application control unit 12 outputs a remote control code generation instruction for turning on the power of the broadcast television receiver TV to the remote control code determination unit 18 and turns on the power stored in the internal memory. / Set the information indicating the off state to “power off”. Hereafter, each time the television power button 241 is pressed, the information indicating the power on / off state is alternately set between “power on” and “power off”.

  At this time, the remote control code determination unit 18 is given in advance identification information representing the manufacturer name “I” stored in the television model holding memory 123 from the application control unit 12. For this reason, the remote control code determination unit 18 responds from the remote control code search table 121 according to the identification information indicating the manufacturer name “I” and the remote control code generation instruction sent from the application control unit 12. The code “0x0B01” is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to turn on the broadcasting television receiver TV.

  The infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned on in response to this infrared signal. At this time, in the broadcast television receiver TV, if the broadcast signal of the input terminal IN1 is set as a default as an input source, the received video of the broadcast is displayed on the monitor 1.

  Next, the user B presses the incoming call button 222 on the videophone terminal remote controller RC (step S7). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. At this time, since the application control unit 12 has received the operation code data of the incoming call button 222 after the off-hook process, the application control unit 12 recognizes the operation of the incoming call button 222 as an instruction to switch the input terminal of the broadcast television receiver TV. Then, a remote control code generation instruction for instructing switching of the input terminal is output to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 increments the count value of the input switching instruction number counter 122 by one according to the operation of the incoming call button 222. That is, the count value indicating the number of operations of the incoming call button 222 is changed from “0” to “1”.

  The remote control code determining unit 18 responds to the corresponding remote control from the remote control code search table 121 in accordance with the identification information representing the manufacturer name “I” acquired previously and the remote control code generation instruction sent from the application control unit 12. The code “0x0B02” is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, an infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted from the infrared remote controller light emitting unit RO. When this infrared signal is received by the remote control receiver 3, the broadcast television receiver TV monitors the video from the video deck VD connected to the input terminal IN2 instead of the broadcast received video displayed on the monitor 1 until then. 1 is displayed.

  Furthermore, it is assumed that the user B presses the incoming call button 222 again or keeps pressing it on the videophone terminal remote controller RC (step S8). In this case, when the application control unit 12 receives code data representing the operation of the incoming call button 222 from the infrared remote control receiving unit 11, the remote control for instructing switching of the input terminal of the broadcast television receiver TV in response thereto. The code generation instruction is output again to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 further increments the count value of the input switching instruction number counter 122 by one in response to the operation of the incoming call button 222 again. That is, the count value indicating the number of operations of the incoming call button 222 is changed from “1” to “2”.

  When the remote control code generation instruction is output, the remote control code determining unit 18 supplies the remote control code “0x0B02” corresponding to the input terminal switching instruction to the infrared remote control light emitting unit RO. An infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted again. As a result, in the broadcast television receiver TV, the video from the videophone terminal TM connected to the input terminal IN3 is displayed on the monitor 1 instead of the video from the video deck VD that has been displayed on the monitor 1 until then. The

  Thus, the videophone communication using the monitor 1 of the broadcast television receiver TV can be performed between the calling user A and the receiving user B thereafter. Note that the received voices of both are output from the audio processing unit 16 to the speaker 2 of the broadcast television receiver TV via the audio output terminal 162 in each videophone terminal TM, and output from the speaker 2 in a loud sound. The video of the other party is output from the video processing unit 17 to the monitor 1 of the broadcast television receiver TV via the video output terminal 172 in each videophone terminal TM and displayed.

  Assume that the videophone communication is completed, and for example, user B presses a disconnect button 223 (not shown) on the remote control RC for the videophone terminal (step S9). Then, the application control unit 12 receives the operation code data of the disconnect button during communication, recognizes the operation as a disconnect instruction, and notifies the call (SIP) control unit 13 of the disconnect instruction. As a result, the call (SIP) control unit 13 performs a disconnection process by SIP, and a BYE message is transmitted to the television telephone terminal TM of the user A.

  On the other hand, in the videophone terminal TM of the user A, when the call (SIP) control unit 13 receives the BYE message, the content of the message is notified to the application control unit 12 and a response to the BYE message is 200. An OK message is returned to user B's videophone to terminal TM. In the videophone terminal TM of the user B, when the 200 OK message is received by the call (SIP) control unit 13, the content of the message is transmitted to the application control unit 12.

  When the above-mentioned BYE message and 200 OK message are received by the call (SIP) control unit 13 in the user TM's video phone terminal TM and user B's video phone terminal TM, respectively, the application control unit 12 The processing for restoring the input terminal switching state of the broadcast television receiver TV to the state before starting the videophone communication and the processing for turning off the power are performed as follows.

  That is, first, the input terminal initialization unit 125 of the application control unit 12 reads information indicating the model of the broadcast television receiver TV connected to the videophone terminal device TMS from the TV model holding memory 123. For example, “A-C” is read out from the videophone terminal apparatus TMS of the user A, and “I-B” is read out from the videophone terminal apparatus TMS of the user B. Then, the information indicating the total number of input terminals held by the broadcast television receiver TV is retrieved by searching the input terminal total number search table 124 using the read information indicating the model of the broadcast television receiver TV as a search key. read out. As a result of this search, the total number of input terminals “3” is read out as shown in FIG. 5 in the videophone terminal apparatus TMS of the user A, and the total number of input terminals “3” is read out also in the videophone terminal apparatus TMS of the user B. . The input terminal initialization unit 125 reads the count value from the input switching instruction number counter 122. Here, the count value “2” is read out in any of the videophone terminal apparatuses TMS of the users A and B.

  Next, the input terminal initialization unit 125 subtracts the count value “2” of the input switching instruction number counter 122 from the read input terminal total number “3”, and the number of times corresponding to the value after the subtraction, A remote control code generation instruction for switching the input terminal of the broadcast television receiver TV is output to the remote control code determination unit 18. For example, in this case, since the value after subtraction is “1”, a remote control code generation instruction for switching the input terminal is output to the remote control code determination unit 18 only once. However, when the count value of the input switching instruction number counter 122 exceeds the total number of input terminals, the total number of input terminals is subtracted from the count value until the count value becomes equal to or less than the total number of input terminals, and the number after subtraction is calculated. Replace with the above count value. Note that after the output of the remote control code generation instruction is completed, the count value of the input switching instruction number counter 122 is reset to “0”.

  In response to the remote control code generation instruction sent from the application control unit 12, the remote control code determination unit 18 reads out the corresponding remote control code from the remote control code search table 121, and supplies this remote control code to the infrared remote control light emitting unit RO. . For example, the remote control code “0x0A02” is read from the user A's videophone terminal device TMS as shown in FIG. 4, and the remote control code “0x0B02” is read from the user B's videophone terminal device TMS, respectively. Supply to RO. As a result, the infrared remote controller light emitting unit RO instructs the switching of the input terminal of the broadcast television receiver TV from the infrared remote controller light emitting unit RO in both the user A's video phone terminal device TMS and the user B's video phone terminal device TMS. A signal is transmitted once. Accordingly, the input terminal is switched only once in both the broadcast television receiver TV of the user A and the broadcast television receiver TV of the user B. As a result, the input terminal of the broadcast television receiver TV is changed. The selected state is restored to the state before the start of the videophone communication, that is, the state where the broadcast received video is selected as the input source.

  When the input terminal switching recovery processing is completed, the application control unit 12 subsequently executes the power recovery processing of the broadcast television receiver TV as follows. That is, the application control unit 12 stores information indicating the power on / off state of the broadcast television receiver TV before the conference call is started in its own internal memory. When reception of the BYE message and the 200 OK message is notified from the call (SIP) control unit 13, videophone communication is performed based on the information indicating the power on / off state stored in the internal memory. It is determined whether the power of the broadcast television receiver TV before the start is on or off. When it is determined that the power is off, that is, when the information indicating the power on / off state stored in the internal memory is “power off”, the power of the broadcasting television receiver TV is turned off. A remote control code generation instruction is output to the remote control code determination unit 18 and information indicating the power on / off state stored in the internal memory is initialized to “power on”.

In response to the remote control code generation instruction sent from the application control unit 12, the remote control code determination unit 18 reads the corresponding remote control code for power control from the remote control code search table 121 (at the television phone terminal TM of the user A). If there is, “0x0A01” is read out, and “0x0B01” is read out for the telephone terminal TM of user B), and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to power off the broadcast television receiver TV. This infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned off accordingly.
That is, if the broadcast television receiver TV is turned off before the videophone call is started, the broadcast television receiver TV is automatically turned off after the videophone communication is completed.

  As described above, in the first embodiment, when the call button 221 of the videophone terminal remote controller RC is pressed before the telephone number is input, the broadcast television receiver TV is set to receive the press once. In contrast, an infrared signal for instructing input terminal switching is transmitted from the infrared remote controller light emitting unit RO. Further, when the incoming call button 222 of the videophone terminal remote control RC is pressed after the off-hook processing for the incoming call, the input terminal is switched from the infrared remote control light emitting unit RO to the broadcast television receiver TV every time the notification is received. An infrared signal for instruction is transmitted.

  Therefore, at the time of outgoing call or incoming call, the input terminal of the broadcast television receiver TV can be switched by operating the outgoing button 221 and incoming button 222 of the remote control RC for videophone terminal. That is, it is possible to automatically identify and input both a call connection instruction for outgoing / incoming calls and an instruction to switch the input source of the broadcast television receiver TV by operating the outgoing button 221 and incoming button 222. Become. For this reason, the user A on the sending side and the user B on the receiving side do not have to separately operate the remote control of the broadcast television receiver TV to switch the input source, thereby reducing the operation burden.

  In addition, the number of times the outgoing button 221 and incoming button 222 for the purpose of switching the input terminal are pressed is counted and held by the input switching instruction number counter 122. The count value held in the input switching instruction number counter 122 is subtracted from the total number of input terminals held by the TV, and the infrared remote controller light emitting unit RO is transmitted to the broadcast television receiver TV by the number of times corresponding to the subtracted value. Transmits an infrared signal for input terminal switching instruction.

  Therefore, after the conference call is finished, an infrared signal for restoring the switching state of the input terminal of the broadcast television receiver TV to the state before the switching is automatically transmitted as many times as necessary, thereby the broadcast television receiver. The switching state of the TV input terminal is automatically restored to the state before the conference call. This eliminates the need for the caller and the callee to separately operate the remote controller of the broadcast television receiver TV and switch the input terminal even after the conference call ends.

  In the first embodiment, information indicating the power on / off state of the broadcast television receiver TV before the start of the videophone communication is stored in the internal memory of the application control unit 12, and the call is disconnected. When processing is performed, the power of the broadcast television receiver TV before the start of the videophone communication is turned on based on the information indicating the power on / off state stored in the internal memory. It is determined whether it was in the off state. When it is determined that the power is off, that is, when the information indicating the power on / off state stored in the internal memory is “power off”, the power of the broadcasting television receiver TV is turned off. Infrared signals for transmitting are transmitted so that the television receiver for broadcasting TV is turned off.

  Therefore, if the broadcast television receiver TV is turned off before the videophone call is started, the broadcast television receiver TV is automatically turned off after the videophone communication ends. Can do. As a result, the users A and B do not have to separately operate the remote control of the television receiver for broadcasting TV after the videophone communication is completed, and the power load is further reduced accordingly.

(Second Embodiment)
In the second embodiment of the present invention, a switch button is newly provided on the videophone terminal remote controller RC, and an infrared signal is transmitted from the videophone terminal TM to the broadcast television receiver TV in response to the operation of the switch button. By doing so, the input terminal of the broadcast television receiver TV can be switched, and after the videophone communication is completed, the switching state of the input terminal of the broadcast television receiver TV is automatically restored to the state before the videophone communication. It is what I did.

FIG. 7 is a diagram showing the configuration of a videophone terminal remote controller RC used in the videophone terminal apparatus TMS according to the second embodiment of the present invention. As shown in the figure, a switch button 242 is provided as one of the broadcast television operation button group 24 'on the operation surface of the remote control RC for the videophone terminal.
In the figure, the same parts as those in FIG. Further, since the basic configuration of the videophone terminal TM is the same as that of FIG. 2, only the different parts will be described with the aid of FIG.

The application control unit 12 of the videophone terminal TM executes various processes as described below by a control function related to call connection control and a control function for transmitting a remote control signal.
(1) When the TV remote control RC for TV phone terminal is notified by the infrared remote control receiver 11 that the TV power button 241 has been pressed, an instruction for turning on the power of the TV receiver for broadcasting TV is provided. The data is output to the determination unit 18.
(2) When the infrared remote control receiver 11 notifies that the switch button 242 of the videophone terminal remote control RC has been pressed before the call button 221 is pressed, every time the notification is received, it is for broadcasting. An instruction to switch the input terminal of the television receiver TV is output to the remote control code determination unit 18. At the same time, the count value of the input switching instruction number counter 122 is incremented each time a notification of pressing the switching button 242 is received once. That is, the input switch instruction number counter 122 counts the number of times the switch button 242 of the videophone terminal remote controller RC is pressed.
(3) When the infrared remote control receiver 11 is notified that the call button 221 of the videophone terminal remote control RC has been pressed after the telephone number is input, the input telephone number and call instruction are called (SIP ) Notify the control unit 13.
(4) When the infrared remote control receiving unit 11 notifies that the incoming call button 222 of the videophone terminal remote control RC is pressed during the output of the incoming ringing tone, the off-hook instruction is notified to the call (SIP) control unit 13 To do.
(5) When the infrared remote control receiving unit 11 notifies that the switch button 242 of the videophone terminal remote control RC is pressed before the incoming call button 222 is pressed, every time the notification is received, An instruction to switch the input terminal of the broadcast television receiver TV is output to the remote control code determination unit 18. At the same time, the count value of the input switching instruction number counter 122 is incremented each time a notification of pressing the switching button 242 is received once. That is, the input switch instruction number counter 122 counts the number of times the switch button 242 of the videophone terminal remote controller RC is pressed.
(6) After the videophone communication is completed, information indicating the model of the broadcast television receiver TV connected to the videophone terminal device TMS is read from the TV model holding memory 123, and the information indicating the read model is used as a search key. The input terminal total number search table 124 is searched to read out information representing the total number of input terminals held by the broadcast television receiver TV. At the same time, the count value of the number of times the switch button 242 is pressed is read from the input switching instruction number counter 122. Then, the count value of the number of times of pressing is subtracted from the total number of input terminals, and the input terminal switching instruction of the broadcast television receiver TV is output to the remote control code determination unit 18 by the number corresponding to the value after the subtraction. .
(7) Information indicating the power on / off state of the television receiver for broadcasting TV before videophone communication is started is stored in the internal memory, and after the videophone communication is completed, the stored power Based on the information indicating the on / off state, it is determined whether the power of the broadcast television receiver TV before the conference call is started is on or off. When it is determined that the power is off, after the output of the input terminal switching instruction according to the above (6) is finished, an instruction for turning off the power of the broadcasting television receiver TV is output to the remote control code determination unit 18. To do.

Next, an operation when videophone communication is performed between the user A and the user B using the videophone terminal apparatus TMS configured as described above will be described. FIG. 8 is a sequence diagram showing the operation procedure.
The user A on the calling side first presses the TV power button 241 on the videophone terminal remote controller RC (step S1). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. Upon receiving the code data, the application control unit 12 outputs a remote control code generation instruction for turning on the power of the broadcast television receiver TV to the remote control code determination unit 18 and turns on the power stored in the internal memory. / Set the information indicating the off state to “power off”. Hereafter, each time the television power button 241 is pressed, the information indicating the power on / off state is alternately set between “power on” and “power off”.

  At this time, the remote control code determination unit 18 is given in advance identification information representing the manufacturer name “A” stored in the television model holding memory 123 from the application control unit 12. For this reason, the remote control code determination unit 18 responds to the corresponding power supply from the remote control code search table 121 according to the identification information representing the manufacturer name “A” and the remote control code generation instruction sent from the application control unit 12. The remote control code “0x0A01” for control is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to turn on the broadcasting television receiver TV.

  The infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned on in response to this infrared signal. At this time, in the broadcast television receiver TV, since the broadcast signal of the input terminal IN1 is set as a default as an input source, the received video of the broadcast is displayed on the monitor 1.

  Next, the user A presses the switch button 242 on the videophone terminal remote controller RC (step S2). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. At this time, the application control unit 12 recognizes the operation from the operation code data of the switching button 242 as an instruction to switch the input terminal of the broadcast television receiver TV. Then, a remote control code generation instruction for instructing switching of the input terminal is output to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 increments the count value of the input switching instruction number counter 122 by one according to the operation of the switching button 242. That is, the count value indicating the number of operations of the switching button 242 is changed from “0” to “1”.

  The remote control code determination unit 18 performs the corresponding switching from the remote control code search table 121 in accordance with the identification information representing the manufacturer name “A” company acquired previously and the remote control code generation instruction sent from the application control unit 12. The remote control code “0x0A02” for instruction is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, an infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted from the infrared remote controller light emitting unit RO. When the infrared signal is received by the remote control receiver 3, the broadcast television receiver TV monitors the video from the video deck VD connected to the input terminal IN2 instead of the broadcast received video displayed on the monitor 1 until then. 1 is displayed.

  In addition, it is assumed that the user A presses the switching button 242 again or continues to press the videophone terminal remote control RC (step S3). In this case, when the application control unit 12 receives code data representing the operation of the switching button 242 from the infrared remote control receiving unit 11, the remote control for instructing switching of the input terminal of the broadcast television receiver TV in response thereto. The code generation instruction is output again to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 further increments the count value of the input switching instruction number counter 122 by one in response to the re-operation of the switching button 242. That is, the count value indicating the number of operations of the switching button 242 is changed from “1” to “2”.

  When the remote control code generation instruction is output, the remote control code determination unit 18 supplies the remote control code “0x0A02” corresponding to the input terminal switching instruction to the infrared remote control light emitting unit RO. An infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted again. Therefore, in the broadcast television receiver TV, the video from the videophone terminal TM connected to the input terminal IN3 is displayed on the monitor 1 instead of the video from the video deck VD that has been displayed on the monitor 1 until then. .

  Next, the user A presses the telephone number input button 23 to input the telephone number of the user B on the videophone terminal remote controller RC, and then presses the call button 221 (step S4). Then, the application control unit 12 recognizes the operation as a call instruction from the operation code data of the call button 221 and notifies the call (SIP) control unit 13 of the call instruction together with the input telephone number. As a result, the call (SIP) control unit 13 executes SIP transmission processing and transmits an INVITE request message to the user B's television telephone terminal TM.

On the other hand, the following operation is performed in the television telephone terminal TM of the user B on the receiving side.
That is, when the call (SIP) control unit 13 receives the INVITE request message, an incoming ringing tone is generated from a sounder (not shown) provided in the television telephone terminal TM under the control of the application control unit 12. . In this state, it is assumed that the user B presses the TV power button 241 on the TV phone terminal remote controller RC (step S5). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. Upon receiving the code data, the application control unit 12 outputs a remote control code generation instruction for turning on the power of the broadcast television receiver TV to the remote control code determination unit 18 and turns on the power stored in the internal memory. / Set the information indicating the off state to “power off”. Hereafter, each time the television power button 241 is pressed, the information indicating the power on / off state is alternately set between “power on” and “power off”.

  At this time, the remote control code determination unit 18 is given in advance identification information representing the manufacturer name “I” stored in the television model holding memory 123 from the application control unit 12. For this reason, the remote control code determination unit 18 responds from the remote control code search table 121 according to the identification information indicating the manufacturer name “I” and the remote control code generation instruction sent from the application control unit 12. The code “0x0B01” is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to turn on the broadcasting television receiver TV.

  The infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned on in response to this infrared signal. At this time, in the broadcast television receiver TV, if the broadcast signal of the input terminal IN1 is set as a default as an input source, the received video of the broadcast is displayed on the monitor 1.

  Next, the user B presses the switch button 242 on the videophone terminal remote controller RC (step S6). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. At this time, the application control unit 12 recognizes the operation from the operation code data of the switching button 242 as an instruction to switch the input terminal of the broadcast television receiver TV. Then, a remote control code generation instruction for instructing switching of the input terminal is output to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 increments the count value of the input switching instruction number counter 122 by one according to the operation of the switching button 242. That is, the count value indicating the number of operations of the switching button 242 is changed from “0” to “1”.

  The remote control code determination unit 18 inputs the corresponding input from the remote control code search table 121 in accordance with the identification information representing the manufacturer name “I” acquired previously and the remote control code generation instruction sent from the application control unit 12. The remote control code “0x0B02” for instructing terminal switching is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, an infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted from the infrared remote controller light emitting unit RO. When this infrared signal is received by the remote control receiver 3, the broadcast television receiver TV monitors the video from the video deck VD connected to the input terminal IN2 instead of the broadcast received video displayed on the monitor 1 until then. 1 is displayed.

  Furthermore, it is assumed that the user B presses the switch button 242 again or keeps pressing it in the videophone terminal remote controller RC (step S7). In this case, when the application control unit 12 receives code data representing the operation of the switching button 242 from the infrared remote control receiving unit 11, the remote control for instructing switching of the input terminal of the broadcast television receiver TV in response thereto. The code generation instruction is output again to the remote control code determination unit 18. At this time, the input terminal initialization unit 125 of the application control unit 12 further increments the count value of the input switching instruction number counter 122 by one in response to the operation of the incoming call button 222 again. That is, the count value indicating the number of operations of the incoming call button 222 is changed from “1” to “2”.

  When the remote control code generation instruction is output, the remote control code determining unit 18 supplies the remote control code “0x0B02” corresponding to the input terminal switching instruction to the infrared remote control light emitting unit RO. An infrared signal instructing switching of the input terminal of the broadcast television receiver TV is transmitted again. As a result, in the television receiver for broadcasting TV, instead of the video from the video deck VD that has been displayed on the monitor 1 until then, the video from the videophone terminal TM connected to the input terminal IN3, for example, the calling source The telephone number of the user A is displayed on the monitor 1.

  In this state, the user B presses the incoming call button 222 on the videophone terminal remote controller RC (step S8). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. At this time, the application control unit 12 recognizes the operation as an off-hook instruction from the code data, and notifies the call (SIP) control unit 13 of the off-hook instruction. As a result, the call (SIP) control unit 13 executes SIP incoming response processing, and a 200 OK message that is a response to the INVITE request message is transmitted to the user A's television telephone terminal TM.

  Thus, the videophone communication using the monitor 1 of the broadcast television receiver TV can be performed between the calling user A and the receiving user B thereafter. Note that the received voices of both are output from the audio processing unit 16 to the speaker 2 of the broadcast television receiver TV via the audio output terminal 162 in each videophone terminal TM, and output from the speaker 2 in a loud sound. The video of the other party is output from the video processing unit 17 to the monitor 1 of the broadcast television receiver TV via the video output terminal 172 in each videophone terminal TM and displayed.

Note that the call disconnection process performed between the videophone terminals TM of the user A and the user B after the videophone communication ends is the same as that in the first embodiment.
However, also in the present embodiment, similar to the first embodiment, following the call disconnection process, the user A's video phone terminal TM and the user B's video phone are connected to the application control unit 12 in the terminal TM. Thus, the processing for restoring the input terminal switching state of the broadcast television receiver TV to the state before starting the videophone communication and the processing for turning off the power are executed as follows.

  That is, first, the input terminal initialization unit 125 of the application control unit 12 reads information indicating the model of the broadcast television receiver TV connected to the videophone terminal device TMS from the TV model holding memory 123. For example, “A-C” is read out from the videophone terminal apparatus TMS of the user A, and “I-B” is read out from the videophone terminal apparatus TMS of the user B. Then, the information indicating the total number of input terminals held by the broadcast television receiver TV is retrieved by searching the input terminal total number search table 124 using the read information indicating the model of the broadcast television receiver TV as a search key. read out. As a result of this search, the total number of input terminals “3” is read out as shown in FIG. 5 in the videophone terminal apparatus TMS of the user A, and the total number of input terminals “3” is read out also in the videophone terminal apparatus TMS of the user B. . The input terminal initialization unit 125 reads the count value from the input switching instruction number counter 122. Here, the count value “2” is read out in any of the videophone terminal apparatuses TMS of the users A and B.

  Next, the input terminal initialization unit 125 subtracts the count value “2” of the input switching instruction number counter 122 from the read input terminal total number “3”, and the number of times corresponding to the value after the subtraction, A remote control code generation instruction for switching the input terminal of the broadcast television receiver TV is output to the remote control code determination unit 18. For example, in this case, since the value after subtraction is “1”, a remote control code generation instruction for switching the input terminal is output to the remote control code determination unit 18 only once. However, when the count value of the input switching instruction number counter 122 exceeds the total number of input terminals, the total number of input terminals is subtracted from the count value until the count value becomes equal to or less than the total number of input terminals, and the number after subtraction is calculated. Replace with the above count value. Note that after the output of the remote control code generation instruction is completed, the count value of the input switching instruction number counter 122 is reset to “0”.

  In response to the remote control code generation instruction sent from the application control unit 12, the remote control code determination unit 18 reads out the corresponding remote control code from the remote control code search table 121, and supplies this remote control code to the infrared remote control light emitting unit RO. . For example, the remote control code “0x0A02” is read from the user A's videophone terminal device TMS as shown in FIG. 4, and the remote control code “0x0B02” is read from the user B's videophone terminal device TMS, respectively. Supply to RO. As a result, the infrared remote controller light emitting unit RO instructs the switching of the input terminal of the broadcast television receiver TV from the infrared remote controller light emitting unit RO in both the user A's video phone terminal device TMS and the user B's video phone terminal device TMS. A signal is transmitted once. Accordingly, the input terminal is switched only once in both the broadcast television receiver TV of the user A and the broadcast television receiver TV of the user B. As a result, the input terminal of the broadcast television receiver TV is changed. The selected state is restored to the state before the start of the videophone communication, that is, the state where the broadcast received video is selected as the input source.

  When the input terminal switching recovery processing is completed, the application control unit 12 subsequently executes the power recovery processing of the broadcast television receiver TV as follows. That is, the application control unit 12 stores information indicating the power on / off state of the broadcast television receiver TV before the conference call is started in its own internal memory. When reception of the BYE message and the 200 OK message is notified from the call (SIP) control unit 13, videophone communication is performed based on the information indicating the power on / off state stored in the internal memory. It is determined whether the power of the broadcast television receiver TV before the start is on or off. When it is determined that the power is off, that is, when the information indicating the power on / off state stored in the internal memory is “power off”, the power of the broadcasting television receiver TV is turned off. A remote control code generation instruction is output to the remote control code determination unit 18 and information indicating the power on / off state stored in the internal memory is initialized to “power on”.

In response to the remote control code generation instruction sent from the application control unit 12, the remote control code determination unit 18 reads the corresponding remote control code for power control from the remote control code search table 121 (at the television phone terminal TM of the user A). If there is, “0x0A01” is read out, and “0x0B01” is read out for the telephone terminal TM of user B), and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to power off the broadcast television receiver TV. This infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned off accordingly.
That is, if the broadcast television receiver TV is turned off before the videophone call is started, the broadcast television receiver TV is automatically turned off after the videophone communication is completed.

  As described above, in the second embodiment, when the switch button 242 of the remote control RC for the videophone terminal is pressed before the outgoing call operation, the infrared signal is transmitted to the broadcast television receiver TV every time the press is received. An infrared signal for switching the input terminal is transmitted from the remote control light emitting unit RO. Further, when the switch button 242 of the remote control RC for the videophone terminal is pressed during the incoming call, every time the notification is received, an instruction to switch the input terminal is sent from the infrared remote control light emitting unit RO to the broadcast television receiver TV. Infrared signals are sent for this purpose.

  Therefore, the input terminal of the broadcast television receiver TV can be switched by the operation of the switch button 242 of the remote control RC for the videophone terminal both at the time of outgoing call and at the time of incoming call. That is, it is possible to perform an instruction to switch the input terminal of the broadcast television receiver TV only by operating the switch button 242 at both the time of outgoing call and the time of incoming call. For this reason, the user A on the sending side and the user B on the receiving side do not have to separately operate the remote controller of the broadcast television receiver TV to switch the input terminal, and the operation burden is reduced accordingly. Further, it can be determined whether or not the incoming call side goes off-hook, that is, whether or not to answer the call, by referring to the telephone number of the caller displayed on the monitor 1. Furthermore, the input terminal can be switched in any time zone before, during, and after the call.

  In addition, the number of times the switch button 242 is pressed before the start of the videophone communication is counted and held by the input switch instruction number counter 122, and is held by the broadcast television receiver TV after the videophone communication ends. The count value held in the input switching instruction number counter 122 is subtracted from the total number of input terminals, and the input terminal switching from the infrared remote controller light emitting unit RO to the broadcasting television receiver TV is performed for the number of times corresponding to the subtracted value. An infrared signal for instruction is transmitted.

  Therefore, after the conference call is finished, an infrared signal for restoring the switching state of the input terminal of the broadcast television receiver TV to the state before the switching is automatically transmitted as many times as necessary, thereby the broadcast television receiver. The switching state of the TV input terminal is automatically restored to the state before the conference call. This eliminates the need for the caller and the callee to separately operate the remote controller of the broadcast television receiver TV and switch the input terminal even after the conference call ends.

  Also in this embodiment, as in the first embodiment, if the power of the broadcast television receiver TV is turned off before the videophone call is started, the broadcast is performed after the videophone communication ends. The TV receiver TV can be turned off automatically. As a result, the users A and B do not have to separately operate the remote control of the television receiver for broadcasting TV after the videophone communication is completed, and the power load is further reduced accordingly.

(Third embodiment)
The third embodiment of the present invention generates a remote control code for switching the input terminal of a broadcast television receiver TV when a call button is operated before a telephone number is input during a call. Based on the remote control code, the infrared signal is repeatedly transmitted from the infrared remote controller light emitting unit RO as many times as necessary to select the input terminal to which the videophone terminal TM is connected, and the necessary number of transmissions is held. Further, at the time of incoming call, when the incoming call button is operated during the incoming call, off-hook processing is performed by the call (SIP) control unit 13 and the remote controller for switching the input terminal of the broadcast television receiver TV. A code is generated, and based on the generated remote control code, an infrared signal is repeatedly transmitted from the infrared remote control light emitting portion RO as many times as necessary to select an input terminal to which the videophone terminal TM is connected. Holds the required number of transmissions. Furthermore, after the videophone communication is completed, the infrared remote control light emitting unit RO transmits an infrared signal based on the necessary number of times held, thereby changing the input terminal switching state of the broadcast television receiver TV to the videophone. It automatically restores the state before communication.
Also in this embodiment, since the basic configuration of the videophone terminal TM is the same as that of FIG. 2, only the different parts will be described with the aid of FIG.

The application control unit 12 of the videophone terminal TM executes various processes as described below by a control function related to call connection control and a control function for transmitting a remote control signal.
(1) When the TV remote control RC for TV phone terminal is notified by the infrared remote control receiver 11 that the TV power button 241 has been pressed, an instruction for turning on the power of the TV receiver for broadcasting TV is provided. The data is output to the determination unit 18.
(2) When the infrared remote control receiver 11 notifies that the call button 221 of the videophone terminal remote control RC has been pressed before the telephone number is input, an instruction to switch the input terminal of the broadcast television receiver TV is issued. Repeatedly outputs to the remote control code determination unit 18 a predetermined number of times. At the same time, every time one input terminal switching instruction is output, the count value of the input switching instruction number counter 122 is incremented. That is, the input switching instruction number counter 122 is caused to count the number of output times of the input terminal switching instruction. The number of repeated transmissions of the input terminal switching instruction is set to the number of transmissions required until the input terminal to which the videophone terminal TM is connected is selected in the broadcast television receiver TV. The number of times is set by the user at the time of initial setting of the videophone terminal TM.
(3) When the infrared remote control receiver 11 is notified that the call button 221 of the videophone terminal remote control RC has been pressed after the telephone number is input, the input telephone number and call instruction are called (SIP ) Notify the control unit 13.
(4) When the infrared remote control receiving unit 11 notifies that the incoming call button 222 of the videophone terminal remote control RC is pressed during the output of the incoming ringing tone, the off-hook instruction is notified to the call (SIP) control unit 13 To do. At the same time, an instruction to switch the input terminal of the broadcast television receiver TV is repeatedly output to the remote control code determination unit 18 a predetermined number of times. At the same time, every time one input terminal switching instruction is output, the count value of the input switching instruction number counter 122 is incremented. That is, the input switching instruction number counter 122 is caused to count the number of output times of the input terminal switching instruction. The number of repeated outputs of the input terminal switching instruction is set to the number of transmissions required until the input terminal connected to the videophone terminal TM is selected in the broadcast television receiver TV. The number of times is set by the user at the time of initial setting of the videophone terminal TM.
(5) After the videophone communication is completed, information indicating the model of the broadcast television receiver TV connected to the videophone terminal apparatus TMS is read from the TV model holding memory 123, and the information indicating the read model is used as a search key. The input terminal total number search table 124 is searched to read out information representing the total number of input terminals held by the broadcast television receiver TV. At the same time, the count value of the output count of the input terminal switching instruction is read from the input switching instruction number counter 122. Then, the count value of the number of times of output is subtracted from the total number of input terminals, and the input terminal switching instruction of the broadcast television receiver TV is output to the remote control code determining unit 18 by the number of times corresponding to the value after the subtraction. .
(6) Information indicating the power on / off state of the television receiver for broadcasting TV before videophone communication is started is stored in the internal memory, and after the videophone communication is completed, the stored power Based on the information indicating the on / off state, it is determined whether the power of the broadcast television receiver TV before the conference call is started is on or off. When it is determined that the power is off, after the output of the input terminal switching instruction according to the above (7) is finished, an instruction for turning off the power of the broadcast television receiver TV is output to the remote control code determination unit 18. To do.

Next, an operation when videophone communication is performed between the user A and the user B using the videophone terminal apparatus TMS configured as described above will be described. FIG. 9 is a sequence diagram showing the operation procedure.
The user A on the calling side first presses the TV power button 241 on the videophone terminal remote controller RC (step S1). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. Upon receiving the code data, the application control unit 12 outputs a remote control code generation instruction for turning on the power of the broadcast television receiver TV to the remote control code determination unit 18 and turns on the power stored in the internal memory. / Set the information indicating the off state to “power off”. Hereafter, each time the television power button 241 is pressed, the information indicating the power on / off state is alternately set between “power on” and “power off”.

  At this time, the remote control code determination unit 18 is given in advance identification information representing the manufacturer name “A” stored in the television model holding memory 123 from the application control unit 12. For this reason, the remote control code determination unit 18 responds to the corresponding power supply from the remote control code search table 121 according to the identification information representing the manufacturer name “A” and the remote control code generation instruction sent from the application control unit 12. The remote control code “0x0A01” for control is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to turn on the broadcasting television receiver TV.

  The infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned on in response to this infrared signal. At this time, in the broadcast television receiver TV, since the broadcast signal of the input terminal IN1 is set as a default as an input source, the received video of the broadcast is displayed on the monitor 1.

  Next, the user A presses the call button 221 on the videophone terminal remote controller RC (step S2). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. At this time, since the application control unit 12 has received the operation code data of the call button 221 before inputting the telephone number, the operation of the call button 221 is recognized as an instruction to switch the input terminal of the broadcast television receiver TV. To do. Then, a remote control code generation instruction for instructing the switching of the input terminal is necessary for a predetermined number of times, that is, until the input terminal to which the videophone terminal TM is connected is selected in the broadcast television receiver TV. It is repeatedly output to the remote control code determination unit 18 a certain number of times (in this embodiment, “2 times”). At this time, every time one input terminal switching instruction is output, the count value of the input switching instruction number counter 122 is incremented.

Each time the remote control code determination unit 18 is supplied with a remote control code generation instruction for switching the input terminal from the application control unit 12, the remote control code generation unit 18 represents the remote control code generation instruction and the previously acquired manufacturer name “A” company. In accordance with the identification information, the corresponding remote control code “0x0A02” is read from the remote control code search table 121, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, an infrared signal for instructing switching of the input terminal of the broadcast television receiver TV is repeatedly transmitted from the infrared remote controller light emitting unit RO a predetermined number of times.
In the broadcast television receiver TV, every time the remote control receiver 3 receives the infrared signal, the input terminal selection is switched from IN1 to IN2, and from IN2 to IN3. Therefore, the monitor 1 displays the video from the videophone terminal TM connected to the input terminal IN3 on the monitor 1.

  Next, the user A presses the telephone number input button 23 to input the user B's telephone number on the videophone terminal remote controller RC, and then presses the call button 221 (step S3). Then, since the application control unit 12 receives the operation code data of the call button 221 after inputting the telephone number, the application control unit 12 recognizes the operation of the call button 221 as a call instruction, and sends the call instruction together with the input telephone number. The call (SIP) control unit 13 is notified. As a result, the call (SIP) control unit 13 executes SIP transmission processing and transmits an INVITE request message to the user B's television telephone terminal TM.

On the other hand, the television phone terminal TM of the user B on the receiving side performs the following operation.
That is, when the call (SIP) control unit 13 receives the INVITE request message, an incoming ringing tone is generated from a sounder (not shown) provided in the television telephone terminal TM under the control of the application control unit 12. .

  In this state, the user B presses the TV power button 241 on the TV phone terminal remote controller RC (step S4). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. Upon receiving the code data, the application control unit 12 outputs a remote control code generation instruction for turning on the power of the broadcast television receiver TV to the remote control code determination unit 18 and turns on the power stored in the internal memory. / Set the information indicating the off state to “power off”. Hereafter, each time the television power button 241 is pressed, the information indicating the power on / off state is alternately set between “power on” and “power off”.

  At this time, the remote control code determination unit 18 is given in advance identification information representing the manufacturer name “I” stored in the television model holding memory 123 from the application control unit 12. For this reason, the remote control code determination unit 18 responds from the remote control code search table 121 according to the identification information indicating the manufacturer name “I” and the remote control code generation instruction sent from the application control unit 12. The code “0x0B01” is read, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to turn on the broadcasting television receiver TV.

  The infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned on in response to this infrared signal. At this time, in the broadcast television receiver TV, since the broadcast signal of the input terminal IN1 is set as a default as an input source, the received video of the broadcast is displayed on the monitor 1.

  Next, the user B presses the incoming call button 222 on the videophone terminal remote controller RC (step S5). Then, the infrared signal transmitted from the videophone terminal remote controller RC is received by the infrared remote controller receiver 11 and the code data is notified to the application controller 12. When the operation code data of the incoming call button 222 is notified, the application control unit 12 first notifies the call (SIP) control unit 13 of an off-hook instruction. As a result, off-hook processing is performed by the call (SIP) control unit 13, whereby a 200 OK message, which is a response to the previously received INVITE request message, is returned to the calling videophone terminal.

  In parallel with the off-hook processing instruction, the application control unit 12 performs a predetermined number of times of input terminal switching instruction for the broadcast television receiver TV, that is, the videophone terminal TM is set in the broadcast television receiver TV. Repeatedly outputs the remote control code determination unit 18 as many times as necessary (in this embodiment, “twice”) until the connected input terminal is selected. At this time, every time one input terminal switching instruction is output, the count value of the input switching instruction number counter 122 is incremented.

Each time the remote control code determination unit 18 is supplied with a remote control code generation instruction for switching the input terminal from the application control unit 12, the remote control code generation unit 18 represents the remote control code generation instruction and the previously acquired manufacturer name “I”. In response to the identification information, the corresponding remote control code “0x0B02” is read from the remote control code search table 121, and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, an infrared signal for instructing switching of the input terminal of the broadcast television receiver TV is repeatedly transmitted from the infrared remote controller light emitting unit RO a predetermined number of times.
In the broadcast television receiver TV, every time the remote control receiver 3 receives the infrared signal, the input terminal selection is switched from IN1 to IN2, and from IN2 to IN3. Therefore, the monitor 1 displays the video from the videophone terminal TM connected to the input terminal IN3, for example, the telephone number of the calling user A on the monitor 1.

  Thus, the videophone communication using the monitor 1 of the broadcast television receiver TV can be performed between the calling user A and the receiving user B thereafter. Note that the received voices of both are output from the audio processing unit 16 to the speaker 2 of the broadcast television receiver TV via the audio output terminal 162 in each videophone terminal TM, and output from the speaker 2 in a loud sound. The video of the other party is output from the video processing unit 17 to the monitor 1 of the broadcast television receiver TV via the video output terminal 172 in each videophone terminal TM and displayed.

Note that the call disconnection process performed between the videophone terminals TM of the user A and the user B after the videophone communication ends is the same as that in the first embodiment.
However, in the present embodiment, as in the first and second embodiments, the user A's videophone terminal TM and the user B's videophone terminal TM have the application following the call disconnection process. The control unit 12 executes a process for restoring the input terminal switching state of the broadcast television receiver TV to a state before starting the videophone communication and a process for turning off the power as follows.

  That is, first, the input terminal initialization unit 125 of the application control unit 12 reads information indicating the model of the broadcast television receiver TV connected to the videophone terminal device TMS from the TV model holding memory 123. For example, “A-C” is read out from the videophone terminal apparatus TMS of the user A, and “I-B” is read out from the videophone terminal apparatus TMS of the user B. Then, the information indicating the total number of input terminals held by the broadcast television receiver TV is retrieved by searching the input terminal total number search table 124 using the read information indicating the model of the broadcast television receiver TV as a search key. read out. As a result of this search, the total number of input terminals “3” is read out as shown in FIG. 5 in the videophone terminal apparatus TMS of the user A, and the total number of input terminals “3” is read out also in the videophone terminal apparatus TMS of the user B. . The input terminal initialization unit 125 reads the count value from the input switching instruction number counter 122. Here, the count value “2” is read out in any of the videophone terminal apparatuses TMS of the users A and B.

  Next, the input terminal initialization unit 125 subtracts the count value “2” of the input switching instruction number counter 122 from the read input terminal total number “3”, and the number of times corresponding to the value after the subtraction, A remote control code generation instruction for switching the input terminal of the broadcast television receiver TV is output to the remote control code determination unit 18. For example, in this case, since the value after subtraction is “1”, a remote control code generation instruction for switching the input terminal is output to the remote control code determination unit 18 only once. However, when the count value of the input switching instruction number counter 122 exceeds the total number of input terminals, the total number of input terminals is subtracted from the count value until the count value becomes equal to or less than the total number of input terminals, and the number after subtraction is calculated. Replace with the above count value. Note that after the output of the remote control code generation instruction is completed, the count value of the input switching instruction number counter 122 is reset to “0”.

  In response to the remote control code generation instruction sent from the application control unit 12, the remote control code determination unit 18 reads out the corresponding remote control code from the remote control code search table 121, and supplies this remote control code to the infrared remote control light emitting unit RO. . For example, the remote control code “0x0A02” is read from the user A's videophone terminal device TMS as shown in FIG. 4, and the remote control code “0x0B02” is read from the user B's videophone terminal device TMS, respectively. Supply to RO. As a result, the infrared remote controller light emitting unit RO instructs the switching of the input terminal of the broadcast television receiver TV from the infrared remote controller light emitting unit RO in both the user A's video phone terminal device TMS and the user B's video phone terminal device TMS. A signal is transmitted once. Accordingly, the input terminal is switched only once in both the broadcast television receiver TV of the user A and the broadcast television receiver TV of the user B. As a result, the input terminal of the broadcast television receiver TV is changed. The selected state is restored to the state before the start of the videophone communication, that is, the state where the broadcast received video is selected as the input source.

  When the input terminal switching recovery processing is completed, the application control unit 12 subsequently executes the power recovery processing of the broadcast television receiver TV as follows. That is, the application control unit 12 stores information indicating the power on / off state of the broadcast television receiver TV before the conference call is started in its own internal memory. When reception of the BYE message and the 200 OK message is notified from the call (SIP) control unit 13, videophone communication is performed based on the information indicating the power on / off state stored in the internal memory. It is determined whether the power of the broadcast television receiver TV before the start is on or off. When it is determined that the power is off, that is, when the information indicating the power on / off state stored in the internal memory is “power off”, the power of the broadcasting television receiver TV is turned off. A remote control code generation instruction is output to the remote control code determination unit 18 and information indicating the power on / off state stored in the internal memory is initialized to “power on”.

In response to the remote control code generation instruction sent from the application control unit 12, the remote control code determination unit 18 reads the corresponding remote control code for power control from the remote control code search table 121 (at the television phone terminal TM of the user A). If there is, “0x0A01” is read out, and “0x0B01” is read out for the telephone terminal TM of user B), and this remote control code is supplied to the infrared remote control light emitting unit RO. As a result, the infrared remote control light emitting unit RO transmits an infrared signal instructing to power off the broadcast television receiver TV. This infrared signal is received by the remote control receiver 3 of the broadcast television receiver TV, and the power of the broadcast television receiver TV is turned off accordingly.
That is, if the broadcast television receiver TV is turned off before the videophone call is started, the broadcast television receiver TV is automatically turned off after the videophone communication is completed.

  As described above, the third embodiment generates a remote control code for switching the input terminal of the broadcast television receiver TV when the call button 221 is operated before the telephone number is input at the time of outgoing call. Based on the generated remote control code, an infrared signal is repeatedly transmitted from the infrared remote control light emitting portion RO as many times as necessary to select an input terminal to which the videophone terminal TM is connected. Further, at the time of incoming call, when the incoming call button 222 is operated during the incoming call, the call (SIP) control unit 13 performs off-hook processing and switches the input terminal of the broadcast television receiver TV. A remote control code is generated, and based on the generated remote control code, an infrared signal is repeatedly transmitted from the infrared remote control light emitting portion RO as many times as necessary to select an input terminal to which the videophone terminal TM is connected. ing.

  Therefore, at the time of outgoing call or incoming call, the input terminal of the broadcast television receiver TV can be switched by operating the outgoing button 221 and incoming button 222 of the remote control RC for videophone terminal. That is, it is possible to automatically identify and input both a call connection instruction for outgoing / incoming calls and an instruction to switch the input source of the broadcast television receiver TV by operating the outgoing button 221 and incoming button 222. Become. This eliminates the need for the user A on the sending side and the user B on the receiving side to switch the input source by separately operating the remote control of the broadcast television receiver TV. In addition, the input terminal switching instruction signal is automatically transmitted as many times as necessary by simply pressing the transmission button 221 and the incoming call button 222 once. For this reason, it is possible to further reduce the number of operations of the transmission button 221 and the incoming call button 222 necessary for the switching operation of the input terminal, and the operation burden is further reduced accordingly.

  Further, the number of output of the input terminal switching instruction generated by the operation of the outgoing call button 221 and the incoming call button 222 is counted and held by the input switching instruction number counter 122 before starting the videophone communication. The count value held in the input switching instruction number counter 122 is subtracted from the total number of input terminals held by the broadcast television receiver TV, and the broadcast television receiver TV is given the number of times corresponding to the value after the subtraction. In contrast, an infrared signal for instructing input terminal switching is transmitted from the infrared remote controller light emitting unit RO.

  Therefore, after the conference call is finished, an infrared signal for restoring the switching state of the input terminal of the broadcast television receiver TV to the state before the switching is automatically transmitted as many times as necessary, thereby the broadcast television receiver. The switching state of the TV input terminal is automatically restored to the state before the conference call. This eliminates the need for the caller and the callee to separately operate the remote controller of the broadcast television receiver TV and switch the input terminal even after the conference call ends.

  Also in this embodiment, as in the first and second embodiments, if the television receiver for broadcasting TV is turned off before the videophone call is started, the videophone communication is performed. After the end, the power of the broadcast television receiver TV can be automatically turned off. As a result, the users A and B do not have to separately operate the remote control of the television receiver for broadcasting TV after the videophone communication is completed, and the power load is further reduced accordingly.

(Other embodiments)
In response to pressing of the TV power button 241, the outgoing button 221 or the incoming button 222, a signal for turning on the power of the broadcast television receiver TV is first transmitted, and the power of the broadcast television receiver TV is turned on. After an elapse of time required for the transmission, an infrared signal for instructing switching of the input terminal may be transmitted repeatedly a predetermined number of times. In this way, the user can set the broadcast television receiver TV to a usable state by a single button operation, thereby further reducing the operation burden.

  In each of the first to third embodiments, the input terminal total number search table 124 that stores the total number of input terminals in association with the manufacturer name and model name of the broadcast television receiver TV is stored in the videophone terminal apparatus TMS. However, the user may input the total number of input terminals held by the broadcast television receiver TV by operating the remote control RC for the videophone terminal.

  The remote controller may be one that uses a low-power radio such as Bluetooth (registered trademark) in addition to one that uses infrared rays. Furthermore, the call button 221 and the call button 222 may be physically the same button (call button). In addition, the configuration, control procedure, control content, and the like of the videophone terminal can be variously modified and implemented without departing from the gist of the present invention.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

It is a figure which shows the system configuration | structure of the video telephone terminal device which is a conference call terminal device concerning 1st Embodiment of this invention, and its periphery part. It is a block diagram which shows the structure of the video telephone terminal which makes the core of the video telephone terminal apparatus shown in FIG. It is a block diagram which shows the structure of the remote control for videophone terminals used with the videophone terminal apparatus shown in FIG. It is a figure which shows an example of the remote control code search table provided in the videophone terminal shown in FIG. It is a figure which shows an example of the input terminal total number search table provided in the video telephone terminal shown in FIG. It is a sequence diagram which shows the operation | movement procedure of the video telephone communication using the video telephone terminal shown in FIG. It is a block diagram which shows the structure of the remote control for videophone terminals used with the videophone terminal device concerning 2nd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the video telephone communication using the video telephone terminal concerning the 2nd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the video telephone communication using the video telephone terminal concerning the 3rd Embodiment of this invention.

Explanation of symbols

  TV ... broadcast television receiver, TMS ... video phone terminal, TM ... video phone terminal, RC ... remote control for video phone terminal, RO ... infrared remote control light emitting unit, 11 ... infrared remote control receiver, 12 ... application control unit 121 ... Remote control code search table, 122 ... Input switching instruction number counter, 123 ... TV model holding memory, 124 ... Input terminal total number search table, 125 ... Input terminal initialization unit, 13 ... Call (SIP) control unit, 14 ... Communication protocol processing unit, 15 ... network interface unit, 16 ... audio processing unit, 161 ... microphone, 162 ... audio output terminal, 17 ... video processing unit, 171 ... video camera, 172 ... video output terminal, 18 ... remote control code determination unit , 21 ... Infrared light emitting unit, 22 ... Button group for videophone terminal operation, 22 ... call button, 222 ... call button, 223 ... disconnect button, 23 ... phone number input button, 24 ... broadcast television operation button group, 241 ... TV power button, 242 ... switching button.

Claims (7)

The input terminal of a broadcast television receiver comprising a remote control receiver for receiving a remote control signal for controlling a television reception operation transmitted from a remote controller, and a plurality of input terminals to which different input sources are connected A conference call terminal device connected to and used by one of the following:
A remote control transmitter for transmitting a pseudo remote control signal equivalent to a remote control signal transmitted from the remote controller to the remote control receiver of the broadcast television receiver;
Means for accepting an operation of a call button for a conference call and an input operation of a telephone number,
A first remote control code for switching the input source of the broadcast television receiver is generated each time an operation of the call button is accepted once before the telephone number is input, and the generated first remote control code is generated. Means for transmitting a remote control signal corresponding to a remote control code from the remote control transmitter;
Means for counting the number of operations of the call button before inputting the telephone number and holding the counted value;
Means for executing a calling process for the terminal device of the other party on the basis of the input telephone number when an operation of the calling button is accepted after the telephone number is input;
Based on the total number of input terminals to which the input source is connected after the conference call with the terminal device of the call partner and the count value of the number of operations of the held call button are held, the broadcasting television The number of second remote control codes necessary to restore the input source of the receiver to the input source before switching is generated, and the remote control signal corresponding to the generated second remote control code is transmitted to the remote controller. A conference call terminal device comprising: a transmission unit configured to transmit. Means for accepting operation of an incoming call button for a conference call;
Means for executing an incoming call response process when an operation of the incoming call button is accepted during an incoming call notification operation;
A third remote control code for switching the input source of the broadcast television receiver is generated each time an operation of the incoming call button is accepted once after the incoming call response process, and the generated third remote control code is generated. Means for transmitting a remote control signal corresponding to a control code from the remote control transmission unit;
Means for counting the number of operations of the incoming call button after the incoming call response process and holding the count value;
Based on the total number of input terminals to which the input source is connected after the conference call with the terminal device of the other party of call and the count value of the number of operations of the held incoming button, the broadcast television A number of fourth remote control codes necessary to restore the input source of the receiver to the input source before switching are generated, and remote control signals corresponding to the generated fourth remote control codes are transmitted to the remote controller. The conference call terminal device according to claim 1, further comprising means for transmitting from the transmission unit. The input terminal of a broadcast television receiver comprising a remote control receiver for receiving a remote control signal for controlling a television reception operation transmitted from a remote controller, and a plurality of input terminals to which different input sources are connected A conference call terminal device connected to and used by one of the following:
A remote control transmitter for transmitting a pseudo remote control signal equivalent to a remote control signal transmitted from the remote controller to the remote control receiver of the broadcast television receiver;
Means for accepting an operation of a call button for a conference call, an input operation of a telephone number, and an operation of a switching button,
Each time an operation of the switching button is accepted, a first remote control code for switching the input source of the broadcast television receiver is generated, and a remote corresponding to the generated first remote control code is generated. Means for transmitting a control signal from the remote control transmitter;
Means for counting the number of operations of the switching button and holding the count value;
Means for executing a calling process for the terminal device of the other party on the basis of the input telephone number when an operation of the calling button is accepted after the telephone number is input;
Based on the total number of input terminals to which the input source is connected after the conference call with the terminal device of the other party and the count value of the number of operations of the held switch button, The number of second remote control codes necessary to restore the input source of the receiver to the input source before switching is generated, and the remote control signal corresponding to the generated second remote control code is transmitted to the remote controller. A conference call terminal device comprising: a transmission unit configured to transmit. Means for accepting operation of an incoming call button for a conference call;
Means for executing an incoming call response process when an operation of the incoming call button is accepted during an incoming call notification operation;
A third remote control code for switching the input source of the broadcasting television receiver is generated each time an operation of the switching button is accepted once before and after the incoming call response process, and the generated third remote control code is generated. Means for transmitting a remote control signal corresponding to a control code from the remote control transmission unit;
Means for counting the number of times the switch button is operated before and after the incoming call response process and holding the count value;
Based on the total number of input terminals to which the input source is connected after the conference call with the terminal device of the other party and the count value of the number of operations of the held switch button, A number of fourth remote control codes necessary to restore the input source of the receiver to the input source before switching are generated, and remote control signals corresponding to the generated fourth remote control codes are transmitted to the remote controller. 4. The conference call terminal device according to claim 3, further comprising means for transmitting from the transmission unit. The input terminal of a broadcast television receiver comprising a remote control receiver for receiving a remote control signal for controlling a television reception operation transmitted from a remote controller, and a plurality of input terminals to which different input sources are connected A conference call terminal device connected to and used by one of the following:
A remote control transmitter for transmitting a pseudo remote control signal equivalent to a remote control signal transmitted from the remote controller to the remote control receiver of the broadcast television receiver;
Means for accepting an operation of a call button for a conference call and an input operation of a telephone number,
When the operation of the call button is accepted before the telephone number is input, a first remote control code for switching the input source of the broadcasting television receiver is generated, and the generated first remote control is generated. Means for repeatedly transmitting a remote control signal corresponding to a code from the remote control transmitter as many times as necessary to select the conference call device among the plurality of input sources;
Means for holding the number of times required to select the conference call device;
Means for executing a calling process for the terminal device of the other party on the basis of the input telephone number when an operation of the calling button is accepted after the telephone number is input;
Number required to restore the input source of the broadcast television receiver to the input source before switching based on the held required number after the conference call with the terminal device of the other party is completed And a means for transmitting a remote control signal corresponding to the generated second remote control code from the remote control transmission unit. Means for accepting operation of an incoming call button for a conference call;
A third remote control for executing an incoming call response process when the operation of the incoming call button is accepted during an incoming call notification operation and switching the input source of the broadcast television receiver in parallel with the incoming call response process A remote control signal corresponding to the generated third remote control code is repeatedly generated from the remote control transmission unit as many times as necessary to select the conference call device among the plurality of input sources. Means for sending,
Means for holding the number of times required to select the conference call device;
Number required to restore the input source of the broadcast television receiver to the input source before switching based on the held required number after the conference call with the terminal device of the other party is completed And a means for transmitting a remote control signal corresponding to the generated fourth remote control code from the remote control transmitter. The conference call terminal device described. Means for storing information representing a power on / off state of the broadcast television receiver before a conference call is started;
After the conference call, whether the broadcast television receiver was on or off before the conference call was started based on the stored information indicating the power on / off state Means for determining
When it is determined that the power of the broadcasting television receiver before the start of the conference call has been turned off, after the transmission of the remote control signal corresponding to the second or fourth remote control code, the broadcasting Generating a fifth remote control code for turning off the power of the television receiver, and transmitting a remote control signal corresponding to the generated fifth remote control code from the remote control transmission unit; The conference call terminal device according to claim 1, further comprising:

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