JPS5940745A - Multi-address calling system - Google Patents

Abstract

PURPOSE:To attain the multi-address calling in the limited stations and to confirm the possibility of receiving, by transmitting a response signal when the own station is designated and receiving a telegram from a transmitting station succeeding to a station designation end code for a designated station only. CONSTITUTION:A prescribed multiple address code is transmitted at a transmission station at step 1, and the code is received at all receiving stations at steps 2-4. Then, the transmission station designates an incoming station A as multiple address, thus a station designation code A is transmitted, and the receiving station A among all the receiving stations receiving the code transmits a response signal for a prescribed time when the receiving is possible. The transmission station receiving this signal at step 7 confirms it and transmits a station designating code B after waiting for the interruption of a response signal of the incoming station A similarly. The transmission station completing the designation of all the stations of multiple address in this way transmits a station designation end code at the step 8, and the incoming station releases the station designation waiting state in steps 9-11. A multiple address telegram is transmitted from the transmission station in step 12, and only the incoming stations A, B receiving the station designation receive the multiple address telegram.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a single broadcast system.
This relates to a communication method that allows broadcast communication to be carried out after specifying a station name and confirming the responses from each station.

Conventionally, in this type of broadcast communication system, the transmitting station only transmits a broadcast code, and the receiving station does not transmit a response signal. Therefore, there were drawbacks in that it was not possible to specify the destination of the broadcast communication, and it was not possible to confirm that the receiving station was in a normal receiving state.

In the present invention, a transmitting station transmits a broadcast code, a plurality of station designation codes, and a station designation end code, and the receiving station transmits a response signal when its own station is designated as a station, and following the station designation end code, By receiving messages from the transmitting station only from designated stations, the above drawbacks are resolved, broadcast communication is possible with limited stations, and it is also possible to confirm that the receiving station is able to receive the message. This method provides a method that

That is, the present invention provides a communication network in which a plurality of stations use a common channel, in which any station is not a transmitting station, and a broadcast code,
Transmit multiple station designation codes and station designation end codes. All stations other than the transmitting station become receiving stations and receive the above signal, and when the station designation code matches their own station code, they transmit a response signal. After repeating the designation of multiple stations and the transmission of response signals from the designated station, the originating station transmits a station designation end code, and further transmits a circular telegram, and the receiving station only receives the station designation from the previous station. , receive the broadcast telegram.

Next, an embodiment in which the broadcast communication system according to the present invention is applied to telex communication using the 80PC satellite communication system will be described with reference to the drawings.

Figure 1 shows the system configuration of the 5cpc satellite communication system.
Of all the stations having one common channel, only seven transmitting stations are controlled to invert the transmitting/receiving frequency (F'l/F, >), thereby allowing communication between the transmitting station and all other stations.

Next, referring to FIG. 2 showing the transmitted and received signals between each station, t
indicates the time axis of each station, and 1 to 12 indicate the position of each station on the time axis necessary for explanation. In step 1, the transmitting station transmits a predetermined broadcast code, which is received by all receiving stations in steps 2 to 4. Next, in step 5, the transmitting station sends a station designation code to the receiving station as the recipient of the relay communication, and among all the receiving stations that receive this, receiving station A sends a response signal for a certain period of time if it is able to receive it. do. The originating station, which received the signal at 7, confirms this, waits for the response signal from the terminating station A to be disconnected, and similarly transmits the station designation code B. The originating station, which has thus completed the designation of all the stations to which the broadcast communication is to be made, transmits a station designation completion code at step 8, and at steps 9 to 11, the receiving station releases the station designation waiting state. Thereafter, at step 12, the transmitting station transmits a return telegram, and only the receiving stations A and B, which have received the station designation, receive the return telegram.

As explained above, the present invention transmits a broadcast code, a plurality of station designation codes, and a station designation end code from an arbitrary transmitting station in a communication network in which a plurality of stations use a common channel, and receives these signals. All other stations transmit a response signal when their own station becomes the designated station, and only the designated station receives the message from the originating station following the station designation end code. This has the effect of making it possible to communicate and also confirming whether or not the receiving station is capable of receiving data.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of an embodiment of the method of the present invention.
FIG. 2 shows the transmission and reception of signals between the originating and receiving stations in an embodiment according to the present invention, with the time axis shown at the top. In the figure, 1 to 12 are the positions of each station on the time axis, which are necessary for explanation.

Claims (1)

[Claims] In a communication network where multiple stations use a common channel, an arbitrary transmitting station transmits a broadcast code, multiple station designation codes, and a station designation code, and all other stations that receive this signal A broadcast communication system characterized in that only the designated station receives a telegram from the originating station following the 9:00 o'clock response when the local station becomes the designated station (sending an E number, farL, and a station designation end code).