Single-channel communication bus system and station for use in s

Details Single-channel communication bus system and station for use in s Single-channel communication bus system and station for use in s

1986-06-30

1988-06-07

Atkinson, Charles E.

Excavating

370 85, G08C 2502, G06F 1110

Patent

active

047501766

ABSTRACT:
The invention relates to a single-channel digital communication bus system and to a station for use in such system. Only a single physical interconnection between the stations is present for transferring the data. Bit synchronization is effected either in that the data is self-clocking or by a second, clock lead. The data channel realizes an AND-function. The transmission of a message by a master station is answered by an addressed slave by an acknowledge signal train. The acknowledge signal train has a plurality of bits, inclusive of error protection bits. Error protection may be effected by transmitting a series of mutually identical bits, or by means of a CRC signal subtrain. The acknowledge may be positive, negative or a "no acknowledge" signal train.

REFERENCES:
patent: 4144522 (1979-03-01), Kageyama
patent: 4393501 (1983-07-01), Kellogg
patent: 4422171 (1983-12-01), Wortley
patent: 4429384 (1984-01-01), Kaplinsky

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