Single-channel communication bus system and station for use in such system
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United States of America Patent
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Jun 7, 1988
Grant Date -
N/A
app pub date -
Jun 30, 1986
filing date -
Jun 30, 1986
priority date (Note) -
Expired
status (Latency Note)
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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.
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