JPH04252663A - Simultoneous picture communication control system - Google Patents

Abstract

PURPOSE:To reduce the line cost to adapt to system diversification of the line. CONSTITUTION:A low-speed reception control circuit 3 and a lowspeed transmission control circuit 4 control transmission and reception of a dial number are connected through an INS network (INS net 64) 6, and a high-speed transmission control circuit 1 simultaneously sends picture information to plural high-speed reception control circuits 2 through a leased line 5 by control information corresponding to the dial number. The low-speed transmission control circuit 4 controls transmission of the reception result through the INS network 6, and the low-speed reception control circuit 3 controls reception and response.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention is applied to an image broadcast communication control system for image communication. In particular, the control information (reception address) of the high-speed transmission control circuit and the control information (reception address) of the low-speed reception control circuit
The present invention relates to an image broadcast communication control system that performs broadcast communication with a plurality of high-speed reception control circuits using mutually different lines based on dial numbers).

0002

2. Description of the Related Art FIG. 4 is a block diagram of a conventional image broadcast communication control system. FIG. 5 shows an HDLC frame format of image information and control information in a conventional image broadcast communication control system. FIG. 6 is a diagram showing the contents of the reception address area in the HDLC frame of the conventional image broadcast communication control system.

Conventionally, the image broadcast communication control system includes a high-speed transmission control circuit 1 that controls the transmission of image information and control information, a high-speed reception control circuit 2 that controls the reception of image information and control information, and a high-speed reception control circuit 2 that controls the reception of image information and control information. A low-speed transmission control circuit 4A that controls the transmission of control information reception results; a low-speed reception control circuit 3A that controls the reception response of image information and control information;
It consists of a dedicated line 5 for transmitting image information and control information.

When performing image broadcast communication, control information (S shown in FIG. 6) transmitted from the high-speed transmission control circuit 1 is used.
A plurality of high-speed reception control circuits 2 are connected according to the reception addresses A0 to SA5) to perform image broadcast reception. Furthermore, the reception results of the image information and control information are transmitted from the low-speed transmission control circuit 4A and received by the low-speed reception control circuit 3A.

[0005] However, since the only means of connection with the receiving side for control information is the receiving address, image broadcast communication cannot be performed unless the leased line 5 is physically connected in advance, and the line cost is high. increased, making it unsuitable for line diversification (communication that combines different types of lines).

[0006]

[Problem to be Solved by the Invention] However, in this conventional image broadcast communication control system, a dedicated line was used and broadcast communication was performed using only the receiving address, making it difficult to cope with the diversification of networks. Moreover, even when there is no communication, the line cost increases due to the dedicated line.

The present invention solves the above-mentioned drawbacks, and aims to provide an image broadcast communication control system that can reduce line costs and adapt to the diversification of lines.

[0008]

[Means for Solving the Problems] The present invention provides a high-speed transmission control circuit that controls the transmission of broadcast communication of image information and first control information, and a high-speed transmission control circuit that controls the transmission of broadcast communication of image information and first control information. a plurality of high-speed reception control circuits that perform reception control; a low-speed transmission control circuit that is connected to each of the high-speed reception control circuits and performs transmission control of the reception results of the image information and the first control information; and the high-speed transmission control circuit. In the image broadcast communication control method, the image information and the first control information are transmitted through the first communication line. The image information and the first control information are transmitted via a second communication line, and the low-speed reception control circuit transmits the second communication line to the low-speed transmission control circuit. the low-speed transmission control circuit includes means for controlling the reception of the second control information, and the first control information is the second control information. It is characterized by being compatible with.

Further, in the present invention, the first communication line is a dedicated line, the second communication line is an INS network, the second control information is a dial number, and the first control information is a dial number. The information can be a receiving address.

0010

[Operation] Image information and control information are transmitted through the first communication line, and reception results of the image information and control information are transmitted through the second communication line. The low-speed reception control circuit controls the transmission of second control information to the low-speed transmission control circuit via the second communication line, and the low-speed reception control circuit controls reception of the second control information.

[0011] Also, the first communication line is a dedicated line, the second communication line is an INS network, the second control information is a dial number, and the first control information is a receiving address. Can be done. As described above, the line cost can be reduced and the system can be adapted to the diversification of lines.

0012

Embodiments Examples of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an image broadcast communication control system according to an embodiment of the present invention. In FIG. 1, the image broadcast communication control system includes a high-speed transmission control circuit 1 that controls the transmission of broadcast communication of image information and first control information, and a high-speed transmission control circuit 1 that controls the transmission of broadcast communication of image information and first control information. A plurality of high-speed reception control circuits 2 that perform reception control, a low-speed transmission control circuit 4 that is connected to the high-speed reception control circuit 2 and perform transmission control of the reception results of image information and first control information, and high-speed transmission control circuit 1.
and a low-speed reception control circuit 3 that is connected to and performs reception response control of the image information and the first control information.

The feature of the present invention is that the image information and the first control information are transmitted via the first communication line, and the reception results of the image information and the first control information are transmitted through the second communication line. The low-speed reception control circuit 3 includes means for controlling the transmission of second control information to the low-speed transmission control circuit 4 via the second communication line, and the low-speed reception control circuit 3 includes means for controlling reception of the second control information, and the first control information corresponds to the second control information.

Further, the first communication line is a dedicated line 5, the second communication line is an INS network 6, the second control information is a dial number, and the first control information is a This is the receiving address.

The operation of the image broadcast communication control system having such a configuration will be explained. FIG. 2 shows an HDLC frame format of image information and control information of the image broadcast communication control system of the present invention. FIG. 3 is a diagram showing the reception address and dial number areas in the HDLC frame of the image broadcast communication control system of the present invention.

In FIG. 1, when performing image broadcast communication using different types of lines {for example, dedicated line 5 and INS network (INS net 64) 6}, the dial number shown in FIG. INS network 6
and received by the low-speed transmission control circuit 4, and a physical connection is established. Thereafter, control information (receiving address) corresponding to the dial number is transmitted from the high-speed transmission control circuit 1 to the dedicated line 5, and the image information is simultaneously received by the plurality of high-speed reception control circuits 2. Therefore, at the start of communication, the dial number is transmitted, and since communication is possible over either the leased line 5 or the INS network 6,
It can reduce line costs and adapt to the diversification of lines.

[0017]

As described above, the present invention can reduce line costs and adapt to the diversification of lines.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an image broadcast communication control system according to an embodiment of the present invention.

FIG. 2 is an HDLC frame format of image information and control information of the image broadcast communication control system of the present invention.

[Figure 3] HDLC image broadcast communication control system of the present invention
FIG. 3 is a diagram showing areas of a receiving address and dial number within a frame format.

FIG. 4 is a block diagram of a conventional image broadcast communication control system.

FIG. 5 shows an HDLC frame format of image information and control information in a conventional image broadcast communication control system.

[Figure 6] HDLC of conventional image broadcast communication control system
The figure which shows the area of the reception address in a frame.

[Explanation of symbols]

1 High-speed transmission control circuit 2 High-speed reception control circuit 3, 3A low speed reception control circuit 4, 4A low speed transmission control circuit 5 Dedicated line

Claims (2)

[Claims] 1. A high-speed transmission control circuit that controls transmission of broadcast communication of image information and first control information, and a plurality of high-speed reception circuits that control reception of broadcast communication of image information and first control information. a control circuit, a low-speed transmission control circuit that is connected to each of the high-speed reception control circuits and controls the transmission of the image information and the first control information; and a low-speed transmission control circuit that is connected to the high-speed transmission control circuit and controls the transmission of the image information and the first control information. In the image broadcasting communication control system, the image information and the first control information are transmitted via the first communication line, and the image information and the first control information are transmitted via the first communication line, and and the reception result of the first control information is transmitted via a second communication line, and the low-speed reception control circuit transmits the second control information to the low-speed transmission control circuit via the second communication line. The low-speed transmission control circuit includes means for controlling transmission, and the low-speed transmission control circuit includes means for controlling reception of the second control information, and the first control information corresponds to the second control information. Image broadcast communication control system. [Claim 2] The first communication line is a dedicated line,
2. The image broadcast communication control system according to claim 1, wherein said second communication line is an INS network, said second control information is a dial number, and said first control information is a receiving address.