JPH05316247A - Picture transmission encoding system - Google Patents

Abstract

PURPOSE:To accurately and smoothly switch transmission lines by automating the switching of a transmission line. CONSTITUTION:When sending signals to the opposite station, if an ISDN line 1 is selected, for example, as a transmission line, an operator depresses a button for ISDN line 1 on a switching control panel 13. Transmission switching signals are sent from the switching control panel 13 to a transfer panel 12, switching signals from a picture signal encoding section 11 to the ISDN line 1. At the same time, signals directing the transmission of line connection signals of the opposite station are sent from the switching control panel 13 to an ISDN terminal panel 14. The ISDN terminal panel 14 sends line connection signals to the opposite station to connect lines. In the opposite station, the ISDN terminal panel 14 sends reception signals for line connection to the transfer panel 12 as soon as the lines are connected. Thus, the transfer panel 12 connects the ISDN line 1 to the picture signal encoding device 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transmission coding device used in a video conference system, and more particularly to an image transmission coding device used by switching transmission lines.

[0002]

2. Description of the Related Art Conventionally, when an ISDN line or a high-speed digital leased line is used as a transmission line by switching an image transmission coding device of this type, the operator contacts the partner station to determine the line to be used and then the line. We are manually replacing the connection and replacing the terminal board that houses the line interface. The line to be used is selected based on the amount of information at that time and the state of line use.

[0003]

As described above, in the conventional example, since the transmission lines are switched manually, there are problems that switching takes time and many errors occur.

[0004]

An image transmission coding apparatus of the present invention is an image transmission coding apparatus which switches an ISDN line or a high-speed digital leased line as a transmission line and accommodates the ISDN line and terminates the line. And an ISDN terminal board for transmitting / receiving a line connection signal to / from a partner station, and a high speed digital terminal board for accommodating the high-speed digital dedicated line and terminating the line and transmitting / receiving a line connection signal to / from the partner station. The terminal line of the ISDN terminal board and the terminal line of the high-speed digital terminal board are accommodated in the I
A switching board for selecting one of the SDN terminal board or the high-speed digital terminal board for receiving the line connection signal or a transmission switching signal and connecting to the image signal coding unit, and at the same time for sending the transmission switching signal by an operator's operation. A switching control panel for instructing the transmission of the connection signal of the ISDN termination board or the high-speed digital termination board.

[0005]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a video conference system of this embodiment, and FIG. 2 is a block diagram of an image transmission coding apparatus of this embodiment.

In FIG. 1, the TV conference system includes a TV camera 3, a monitor 4, a microphone 5, a speaker 6, and the like.
A control device 2 for switching these, changing the direction of the television camera 3 and moving the television camera 3 and the like, and an image transmission coding device 1 for coding the image and audio signals from the control device 2 and transmitting / receiving them on a transmission path. To be done. A similar video conference system is connected to the partner station at the other end of the transmission path. The image transmission encoding device 1 uses an ISDN line 1 (for example, INS64) and an ISDN line 2 (for example, INS15) as transmission lines.
00), the high-speed digital dedicated line can be automatically switched and used.

In FIG. 2, an image transmission coding apparatus 1 includes an image signal coding unit 11 for coding and decoding image signals and the like.
A switching board 12 for switching lines, a switching control board 13 for transmitting switching signals, and terminal boards 14, 15, 16 for transmitting and receiving circuit connection signals with partner stations together with circuit terminations of the respective circuits. ..

When sending the image signal to the partner station, for example, if the ISDN line 1 is selected as the transmission line, the operator selects the ISDN line 1 of the switching control panel 13.
Press the button that indicates. From the switching control panel 13 to the switching panel 12
A transmission switching signal is sent to the ISDN line 1 to switch the signal from the image signal coding unit 11 to the ISDN line 1. At the same time, the switching control board 13 sends to the ISDN termination board 14 a signal instructing the sending of the line connection signal of the partner station. ISD
The N terminal board 14 thereby sends a line connection signal to the partner station to connect the line.

At the partner station, the ISDN termination board 14 connects the line and at the same time sends a line connection reception signal to the switching board 12. The switching board 12 thereby connects the ISDN line 1 to the image signal coding device 11. In this way, the video conference systems of both stations are connected and used with the ISDN line 1 as a transmission path.

The ISDN lines 1 and IS are used as transmission lines.
Although the case where the DN line 2 and the high-speed digital leased line are used is shown, other lines may be used.

[0011]

As described above, according to the present invention, since the switching of the transmission path is automatically performed by the simple circuit, the switching can be performed accurately and quickly.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention.

FIG. 2 is a block diagram of the image transmission encoding apparatus in FIG.

[Explanation of symbols]

 1 Image Transmission Encoding Device 2 Control Device 3 Television Camera 4 Microphone 5 Speaker 11 Image Signal Encoding Device 12 Switching Board 13 Switching Control Board 14 ISDN Termination Board 15 ISDN Termination Board 16 High Speed Digital Termination Board

Claims (1)

[Claims] 1. An image transmission coding apparatus for switching an ISDN line or a high-speed digital leased line as a transmission line, accommodating the ISDN line, terminating the line, and transmitting / receiving a line connection signal to / from a partner station. ISD
An N terminal board, a high speed digital terminal board that accommodates the high speed digital leased line and terminates the line and transmits / receives a line connection signal to / from a partner station, a terminal circuit of the ISDN terminal board, and the high speed digital terminal board. A switching board for accommodating the terminal line of the ISDN terminal board or the high-speed digital terminal board for receiving the line connection signal or selecting one of them according to a transmission switching signal and connecting to the image signal encoding section; An image transmission coding apparatus, comprising: a switching control panel for sending the transmission switching signal and for instructing transmission of the connection signal of the ISDN termination board or the high-speed digital termination board.