Data transmitting and receiving apparatus
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United States of America Patent
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-
Dec 1, 1987
Grant Date -
N/A
app pub date -
Nov 1, 1982
filing date -
Nov 1, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for controlling the transfer of a data message over a common communication channel between a plurality of processing devices includes a MOS/LSI controller chip associated with each processing unit for constructing a message to be sent to a sending device acknowledging the receipt of the message and the validity of the message. Logic circuits are included which generate a predetermined sequence of two binary bits indicating the receipt of the message and the validity of the receiving message. The binary bits are framed by two other binary bits and the sequence repeated a predetermined number of times to construct an acknowledgment message. The controller chip further includes logic circuits for decoding the acknowledgment message.
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