Communication system with data comparison circuit

Details Communication system with data comparison circuit Communication system with data comparison circuit

1997-07-03

1999-03-30

Chin, Stephen

Pulse or digital communications

Transceivers

Transmission interface between two stations or terminals

395821, 395879, H04B 138, H04L 516

Patent

active

058898174

ABSTRACT:
A communication apparatus includes an automatic reception stop circuit. When a transmit frame sent by another communication apparatus is received, the automatic reception stop circuit compares the specific code included in the transmit frame with the values written to the register beforehand. Based on the results of this comparison, the automatic reception stop circuit stops the reception of the transmitted frame that is considered useless by the communication apparatus.

REFERENCES:
patent: 4200930 (1980-04-01), Rawlings et al.
patent: 4292669 (1981-09-01), Wollum et al.
patent: 4989135 (1991-01-01), Miki
patent: 5010477 (1991-04-01), Omoda et al.
patent: 5199081 (1993-03-01), Saito et al.
patent: 5331551 (1994-07-01), Tsuruoka et al.
patent: 5412660 (1995-05-01), Chen et al.
patent: 5487153 (1996-01-01), Hammerstorm et al.
Fieldbus Standard for Use in Industrial Control Systems, Part 2, Physical Layer Specification and Service Definition (ISA-S 50.02).
IEC Data Link Layer Protocol Ver 4.2 Instrument Society of America 1995.

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