Cyclic data transmission method

Details Cyclic data transmission method Cyclic data transmission method

1989-10-06

1991-11-26

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 854, 370 941, 370 8512, 34082505, H04J 302

Patent

active

050688499

ABSTRACT:
Disclosed is a cyclic data transmission method for updating a common cyclic memory in a decentralized control transmission method which executes both a synchronous transmission of cyclic data and an asynchronous transmission of events characterized in that high speed cyclic data and low speed cyclic data are integrated into a frame when a token is acquired, and the frame is always transmitted with a fixed frame length resulting in an amount of synchronous data always being made constant and enabling the token round target time to be set equal to a update time of a cyclic data. Furthermore, the method according to the present invention enables the device is made at low cost, improves throughput in event transmission and a good response characteristic is provided.

REFERENCES:
patent: 4482999 (1984-11-01), Janson et al.
patent: 4539679 (1985-09-01), Bux et al.
patent: 4914652 (1990-04-01), Nguyen
patent: 4935920 (1990-06-01), Taniguchi et al.
"New Fiber Transmission Data Interface Standard (The Emerging FDDI Standard)," Telecommunications, vol. 21; No. 5, May, 1987.

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