Token ring speed detector

Details Token ring speed detector Token ring speed detector

1994-02-24

1995-08-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 8515, H04J 322, H04L 12433

Patent

active

054426294

ABSTRACT:
Dual detection paths containing speed recognition devices automatically determine the rate at which data is being transmitted on a multi-rate digital data communications network such as a token ring network. The multiple detection paths operate simultaneously with each detection path provided with a Phase Lock Loop (PLL) and a pattern recognition device. The PLL and its associated pattern recognition device are made to operate at one of the known ring speeds. The ring speed is determined by the detection path which is able to recognize a predetermined data pattern from the network.

REFERENCES:
patent: 4567590 (1986-01-01), Bederman
patent: 4716575 (1987-12-01), Douros et al.
patent: 4926415 (1990-05-01), Tawara et al.
patent: 4931250 (1990-06-01), Greszczuk
patent: 5042030 (1991-08-01), Grima et al.

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