Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate
2008-03-25
2008-03-25
Lee, Andrew C. (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative station
C370S225000
Reexamination Certificate
active
10703918
ABSTRACT:
A data transmitter-receiver30arranged on a ring network to form a node includes a normal-direction data transmit/receive unit19, a reverse-direction data transmit/receive unit20, a buffer control unit13, a controller14, and connectors11, 12. The normal-direction data transmit/receive unit19includes a received signal demodulator7, an input buffer3, an output buffer1, an intermediate buffer2, a sending signal modulator8, and data buses15, 16. The reverse-direction data transmit/receive unit20has the same construction as the normal-direction data transmit/receive unit19. Two-way data transmission and verification of transmitted data in each node serves to locate a failure, and the buffer control unit13selectively activates or deactivates the buffers to compensate the failure. Thus, adequate detection, accurate location, proper compensation of a failure can be achieved in a relatively low-cost network system so that the communication functionality of the whole system can be maintained.
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Hamre Schumann Mueller & Larson P.C.
Honda Motor Co. Ltd.
Lee Andrew C.
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