JPH07154773A - Multimedia communication equipment - Google Patents

Abstract

PURPOSE:To perform efficient and high-reliability start-up/end of a system by controlling the power sources of respective peripheral terminals at the multimedia communication equipment controlling many peirpheral terminals. CONSTITUTION:When the main switch of a main body is turned on, a call setting message is received from an ISDN by a network interface part 14, a call control processing part 13 recognizes call termination and the call termination is reported to a terminal control part 10. When a communications line is connected, corresponding to that report, a user successively turns on the power sources of a camera 1, microphone 2, speaker 3, monitor 4 and the other respective peripheral terminals automatically at prescribed intervals and even when the main switch is turned off or the user disconnects the line, a power source control part 16 is provided to similarly automatically turn off the power sources of the respective peirpheral terminals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multimedia communication device.

[0002]

2. Description of the Related Art In recent years, international standardization of image coding methods, I
With the spread of SDN and the realization of easy use of high-speed digital transmission lines at low running costs, a multimedia communication device having a function of an image communication terminal such as a moving picture videophone has been put into practical use. FIG. 2 is a block diagram of a conventional multimedia communication apparatus. As shown in the figure, the network interface unit 14 knows an incoming call by receiving a call setup message from the ISDN. The network interface unit 14 analyzes the message and, if it is confirmed that the calling terminal is a videophone, notifies the call control processing unit 13 of an incoming call. Further, when the call control processing unit 13 notifies the terminal control unit 10 of an incoming call, the terminal control unit 10
Ring the bell to notify the user of the incoming call. When the user responds to the request, the terminal control unit 10 recognizes the fact, and the call control processing unit 13 causes the network interface unit 1 to operate.
4 is instructed to send a response message. According to the instruction, the network interface unit 14 sends a response message to the ISDN, and the connection with the other party is completed. Further, the user turns on the power of each peripheral terminal including the monitor, and the system startup is completed.

After the connection is completed, the video in the self-transmitted video signal from the camera 1 is compressed / encoded by the video codec section 7 and the voice from the microphone 2 is compressed / encoded by the audio codec section 8 and multiplexed by the multiplexing / demultiplexing section 12. Network interface unit 14
Sent on the line. At the same time, the video / audio data from the other party received by the network interface unit 14 is separated into a video signal and an audio signal by the multiplexing / separating unit 12, and further expanded by the video codec unit 7 and the audio codec unit 8. The decoded audio is output from the speaker 3 and the video is output from the monitor 4.

Even when the conversation ends, when the user disconnects the line, the terminal control unit 10 recognizes this and sends a disconnection message to the network interface 14 through the call control processing unit 13 to communicate with the other party. Communication is disconnected. Then, the user turns off the power of each peripheral terminal, and the shutdown of the system is completed.

[0005]

However, in the above-mentioned conventional multimedia communication device, although there are many peripheral terminals, the power of these terminals is turned on / off for each terminal. However, when the user starts up the system, it is necessary to turn on the power switches for all the terminals to be used, which causes a problem of poor efficiency.

Further, in the method of turning on all the terminal switches and turning on only the main switch to simultaneously start up the system, a rush current to the input power supply unit of each terminal is superposed when the main switches are turned on, and There is a problem that troubles such as adhesion of switch contacts and fusing of input fuses are likely to occur. The present invention solves the above problems,
An object of the present invention is to provide a multimedia communication device capable of starting up a highly efficient and highly reliable system.

[0007]

To achieve the above object, the present invention provides, as a first invention, a network interface section for controlling an interface with an ISDN, and image data and audio transmitted from the network interface section. The data is separated and sent to the video codec section and the audio codec section respectively, and both the image and voice data sent from each codec section are multiplexed and sent to the network interface section. Call control processing unit that manages calls, a video codec unit that compresses / encodes the image captured from the camera and expands / decodes the image data separated by the multiplexing / separation unit, and a voice from the microphone. Compresses / encodes and decodes audio data separated by the multiplexer / separator
A voice codec unit that expands, a terminal control unit that controls each terminal such as a camera, a microphone, a speaker, a monitor based on an input from a key operation unit, a handwriting input control unit that controls handwriting input of a tablet, etc. When the user starts to use when making or receiving a call, all terminals are automatically turned on one after another at predetermined intervals, and at the same time, all peripheral terminals are automatically turned off. The multimedia communication device is provided with a main switch for turning on and off.

As a second invention, when the main switch is turned on, the power supply control section automatically turns on the camera, microphone, speaker, monitor and other terminals at predetermined intervals via the power-on detection circuit, The multimedia communication device has a function of simultaneously turning off all terminals when the main switch is turned off.

[0009]

According to the first aspect of the present invention, the power supply control unit turns on / off the system by sending and receiving a call, and at the same time when the use of the system is finished, the power of each peripheral terminal is turned on one after another at predetermined intervals, or turned off all at once. It enables the startup and shutdown of a highly reliable system.

According to the second aspect of the invention, through the power-on detection circuit,
When the main switch is turned on, the power supply control unit automatically turns on each terminal at a predetermined interval, and when the main switch is turned off, all terminals can be turned off at the same time.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is a camera for taking an image of one's own side, 2 is a microphone for voice of one's own side, 3
Is a speaker for voice of the other party, and 4 is a monitor for displaying the image of the other party, or an image of the other party or an input from the tablet. 5 is a key operation section for operating each terminal, 6 is a tablet for handwriting input, 7 is a video codec section,
The image data separated by the multiplexer / demultiplexer 12 is decompressed / decoded, and the image on its own side taken from the camera 1 is compressed / encoded. Reference numeral 8 is a voice codec section, which is a multiplexing / demultiplexing section 12
The voice data separated by is decompressed / decoded, and the voice on the own side from the microphone 2 is compressed / encoded. A display control unit 9 controls the image of the other side sent from the video codec unit 7, the image of the own side captured by the camera 1, and the handwriting input from the tablet 6, and displays them on the monitor 4. I will let you. 10 is a terminal control unit,
Each terminal is controlled according to the input from the key operation unit 5. 1
A handwriting input control unit 1 controls input from the tablet 6. Reference numeral 12 denotes a multiplexer / separator, which separates data sent from a multiplexing line for simultaneously transmitting both image and voice data on the line, and an image sent from the video codec unit 7 and the audio codec unit 8. Both voice data are multiplexed. A call control processing unit 13 manages calls such as incoming and outgoing calls and disconnections. A network interface unit 14 connects the ISDN and the videophone. Reference numeral 15 is a power-on detection circuit, which detects power-on to the system by a main switch that turns on / off the commercial input power line. 16 is a power control unit,
Simultaneously with the start and end of use of the system, the power switch of each peripheral terminal is turned on one after another at a predetermined interval or all at once.

The input control signal to the power supply control unit 16 is input from either the terminal control unit 10 or the power-on detection circuit 15. That is, when the control signal is transmitted from the terminal control unit 10, the power-on detection circuit 15 is not used, and when the control signal is transmitted from the power-on detection circuit 15, the control signal is transmitted from the terminal control unit 10. Not done.

First, the operation (case 1) when the power-on detection circuit 15 is not used will be described with reference to FIG. First, in the case of an incoming call, the network interface unit 14 knows the incoming call by receiving a call setup message from the ISDN. The network interface unit 14 analyzes the message, and when it is confirmed that the calling terminal is a videophone,
The call control processor 13 is notified of an incoming call. Further, when the call control processing unit 13 notifies the terminal control unit 10 of the incoming call, the terminal control unit 10 rings the bell to inform the user of the incoming call. When the user is watching the television, the terminal control unit 10 recognizes that, and when the user responds to it, the terminal control unit 10 recognizes that and further, through the call control processing unit 13, It instructs the interface unit 14 to send a response message. According to the instruction, the network interface unit 14 sends a response message to the ISDN to complete the connection with the other party. Further, the terminal control unit 10 also instructs the power supply control unit 16 to start up the system when the user answers the incoming call. In response to the instruction, the power supply control unit 16 turns on the power supplies of the peripheral terminals one after another at predetermined intervals, so that the system is started up.

In the case of making a call, first, the user inputs the key operation section 5 to let the terminal control section 10 know the call. As a result, the terminal control unit 10 notifies the call control processing unit 13 of the call origination, and the call control processing unit 13 sends the call interface processing unit
To send a call setup message. According to the instruction, a call setup message is sent from the network interface unit 14 to the ISDN, and a response message is sent from the ISDN to complete the line connection. Further, when the terminal control unit 10 recognizes the call, the power supply control unit 16 is instructed to start up the system, and the power supply control unit 16 turns on the power supplies of the peripheral terminals one after another at predetermined intervals.
The system is brought up.

When the use of the system is terminated and the user disconnects the line, the terminal control unit 10 recognizes the fact, and the call control processing unit 13 causes the network interface unit 14 to operate.
To send a disconnect message. In response to the instruction, the network interface unit 14 sends a disconnection message to the ISDN, and disconnection with the other party is completed. Further, when the terminal control unit 10 recognizes the disconnection of the line by the user, it also instructs the power supply control unit 16 to shut down the system. Upon receiving the instruction, the power control unit 16 turns off the power of each peripheral terminal, and the system is shut down.

Next, the operation when there is no control signal from the terminal control unit 10 to the power supply control unit 16 and the control signal is sent from the power-on detection circuit 15 (case 2) will be described. In this case, when the input main switch of the main body is turned on regardless of incoming or non-incoming, a control signal is transmitted from the power-on detection circuit 15 to the power supply control unit 16 to turn on the power of each terminal one after another. Further, even when the main switch is turned off, a control signal is transmitted from the power-on detection circuit 15 to the power control unit 16 to turn off the power of each terminal. It is similar to case 1 that a predetermined interval is provided when the power is turned on.

[0017]

As described above, according to the present invention, a camera,
Image of peripherals such as microphones, speakers, monitors, and many other peripheral terminals The system of peripheral terminal devices is automatically started and stopped at the same time when the user starts or finishes using it, and can respond promptly to incoming and outgoing calls and disconnections. It is possible to provide a multimedia communication device capable of efficiently starting and stopping a system.

[Brief description of drawings]

FIG. 1 is a block diagram of a multimedia communication device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional multimedia communication device.

[Explanation of symbols]

 1 camera 2 microphone 3 speaker 4 monitor 5 key operation part 7 video codec part 8 audio codec part 10 terminal control part 11 handwriting input control part 12 multiplex / separation part 13 call control processing part 14 network interface part 15 power-on detection circuit 16 power supply Control unit

Claims (2)

[Claims] 1. A network interface section for controlling an interface with an ISDN, and image data and audio data sent from the network interface section are separated and sent to a video codec section and an audio codec section, respectively. Multiplexing / demultiplexing unit that multiplexes both image and voice data sent from the network interface unit, a call control processing unit that manages calls such as incoming and outgoing calls and disconnection, and an image captured from the camera A video codec that encodes and expands / decodes the image data separated by the multiplexer / separator, and compresses / encodes the sound from the microphone, and decodes / expands the audio data separated by the multiplexer / separator. The audio codec section, the terminal control section that controls each terminal such as the camera, microphone, speaker, monitor, etc. based on the input from the key operation section, and the tablet Handwriting input control unit that controls handwriting input such as a tablet, etc., and at the beginning of use by the user when making or receiving a call, all terminals are automatically turned on one after another at predetermined intervals, and at the same time, all peripheral terminals are turned on. A multimedia communication device comprising a power supply control unit for automatically turning off the power supply and a main switch for turning on / off a commercial input power supply line. 2. The power controller automatically turns on the camera, the microphone, the speaker, the monitor, and other terminals at predetermined intervals via the power-on detection circuit when the main switch is turned on. 2. The multimedia communication device according to claim 1, wherein the multimedia communication device has a function of turning off all terminals at the same time when it is off.