System for exchanging encoded messages between stations

Details System for exchanging encoded messages between stations System for exchanging encoded messages between stations

1980-05-01

1982-08-31

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

34082553, 370 15, 371 32, 371 49, H04J 308, H04L 116, H04L 110

Patent

active

043476031

ABSTRACT:
The present invention consists in a system for exchanging encoded messages between stations, in which each station comprises a connection module (2) connected to a signal bus (LMS) and to a data bus (LMI), the signal and data buses being serial multiplex links synchronized by a general timebase, a time interval comprising consecutive even-numbered and odd-numbered time slots being allocated in each signalling frame to each connection module. In this system for exchanging encoded messages, the signal and data buses are duplicated for security reasons, signalling messages being sent simultaneously on both signal buses and data messages being sent simultaneously on both data buses, messages being received on one bus only.

REFERENCES:
patent: 3618017 (1971-11-01), Murayama et al.
patent: 3714377 (1973-01-01), Moretti
patent: 3914741 (1975-10-01), Bonser et al.
patent: 3985962 (1976-10-01), Jones et al.
patent: 4245344 (1981-01-01), Richter
Proceedings of the IEEE, vol. 65, No. 9, Sep. 1977, N. Jovic et al., "Interprocessor communication in systems with distributed control", pp. 1323 a 1329.
International Zurich Seminar on Integrated Systems for Speech, Video and Data Communications, Mar. 15-17, 1972, P. G. Fontolliet, "Transmission of control information in IFS-1", pp. B5 (1) a B5 (4).
Internal Conference on Communications, vol. 2, Jun. 4-7, 1978, IEEE, New York (US), E. W. Anderson et al., "A microprocessor based controller for a loop switching system", pp. 24.4.1 a 24.4.6.

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