Facsimile and static presentation processing – Facsimile – Facsimile relay system
Patent
1992-06-18
1994-08-30
Ro, Bentsu
Facsimile and static presentation processing
Facsimile
Facsimile relay system
34082503, 379100, H04N 100
Patent
active
053433050
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a facsimile communications system, in particular a multiple addressing facsimile system wherein a facsimile signal is transmitted to multiple terminals with various addresses. Also, the present invention relates to a reception system that is employed in a facsimile communications system which uses, for example, a satellite communications system having multiple audio channels on a single circuit.
BACKGROUND ART
Previously, as a multiple addressing facsimile system which used radio circuits, there was, for example, one which was recorded in Oki Denki Kenkyu Kaihatsu 137, Vol. 55 No. 1 (1 Jan. 1988) Pages 23-26, "Facsimile for Disaster Prevention Radio Communications System" by Gotoh, Hagiya, and Shimizu. This multiple addressing facsimile system was one which used ground wave radio circuits such as microwave circuits and quasi-milliwave circuits. This system comprised control stations installed in the respective regions, branch stations installed in each district inside the regions of these control stations, multiple terminal stations inside the respective districts, and relay stations which conducted the radio circuit relays between the branch stations and the control stations. In this system, a facsimile device for issuing commands was provided in the control stations, and a facsimile device for issuing commands and a facsimile for receiving commands were provided in each of the respective branch stations. Each of the respective terminal stations was provided with a facsimile device for receiving commands.
According to this multiple addressing facsimile system, it was possible to execute, by using the command facsimile device of the control station, a simultaneous command communication which simultaneously transmits a facsimile signal to all of the branch station facsimile devices and all of the terminal station facsimile devices, and the branch simultaneous command communications for the facsimile signals having, as their objective, all of the terminal stations of the respective branch stations, and the like.
However, in this type of a multiple addressing facsimile system, there were the following kinds of problems. facsimile device of the control station to the command receiving facsimile device of the respective terminal stations by using a radio circuit, the signal had to be transmitted to the respective terminal stations via the relay stations and the branch stations. As was mentioned above, at the branch stations, there was a necessity for a facsimile device used for issuing commands and receiving commands, and a device for the purpose of transmitting and receiving that facsimile signal by a radio circuit became necessary. Also, as for the relay stations, since there was a requirement for at least one or more stations within an line of sight communications distance in order to relay, for example, between the control station and the branch stations, in the prior multiple addressing facsimile system, there were the problems that the construction of the entire system became complicated due to relaying these, and that it was not economical. the problem that when a facsimile signal was transmitted to multiple terminal stations using the radio circuits, it could not be operated in the mode wherein optional terminal stations were freely combined, since the system was a multiple group addressing system wherein the terminal stations were combined into a group unit, for example, a district unit.
Thus, the inventors of the present invention in this application, as a result of studying the case of the above mentioned (a), eliminated the branch stations and the relay stations by using existing satellite communications systems, and thought of conducting facsimile multiple address communications from the control station directly to the terminal stations.
However, in the existing audio visual (hereinafter written as AV) service which uses communications satellites, 2 channels are used as audio circuits which are used as a stereo or monaural broadcast circuit in re
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"Facsimile for Disaster Prevention Radio Communications System", Gotoh et al., vol. 55, No. 1, Oki Denki Kenkyu Kaihatsu 137, pp. 23-26.
NHK Laboratories Note, No. 315, Mar., 1985, "Some Experiments On A Facsimile Broadcasting System Multiplexed With Television", Yoshida (pp. 1-13).
IEEE 1990 International Conference On Consumer Electronics, Jun. 6-8, 1990, pp. 308-309, "Multi-Address Facsimile System Using Communication Satellite", Yasumoto et al.
Konishi Hiroshi
Shiraogawa Michio
OKI Electric Industry Co., Ltd.
Rikei Corp.
Ro Bentsu
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