Communication system

Details Communication system Communication system

1992-03-23

1994-11-01

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 8515, 3701001, 370103, 3701052, 370108, 318 41, H04J 302

Patent

active

053612604

ABSTRACT:
A communication system comprising a master station and a plurality of slave stations connected for serial transmission by a transmission line, using a HDLC-type protocal. Each of the slave stations is equipped with a system counter and a control timing setting register. Each slave station receives data when address information included in a transmission frame sent by the master station matches its own address and presets the system counter so that control timing for the object to be controlled by the master station matches the timing by the one or more slave stations. As a result, plural slave stations can output a control signal which matches the control timing for an object to be controlled by master station when the contents of the system counter match the contents of control timing setting register. The predetermined value may be preset and may be based on a collection of actual control timing data between the master station and each slave station.

REFERENCES:
patent: 3919484 (1975-11-01), Maxemchuk
patent: 4596025 (1986-06-01), Satoh
patent: 4727359 (1988-02-01), Yuchi et al.
patent: 4727539 (1988-02-01), Arita et al.

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