Data transmitting and receiving apparatus

Details Data transmitting and receiving apparatus Data transmitting and receiving apparatus

H - Electricity

04

L

340/84

H04L 1/16 (2006.01) H04L 12/413 (2006.01) H04L 1/00 (2006.01)

Patent

CA 1218436

DATA TRANSMITTING AND RECEIVING APPARATUS Abstract of the Disclosure 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 valid- ity 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 prede- termined number of times to construct an acknowledgment message. The controller chip further includes logic circuits for decoding the acknowledgment message.

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