Network receiver, data transmitter-receiver, and failure location/compensation method

摘要

A data transmitter-receiver 30 arranged on a ring network to form a node includes a normal-direction data transmit/receive unit 19, a reverse-direction data transmit/receive unit 20, a buffer control unit 13, a controller 14, and connectors 11, 12. The normal-direction data transmit/receive unit 19 includes a received signal demodulator 7, an input buffer 3, an output buffer 1, an intermediate buffer 2, a sending signal modulator 8, and data buses 15, 16. The reverse-direction data transmit/receive unit 20 has the same construction as the normal-direction data transmit/receive unit 19. Two-way data transmission and verification of transmitted data in each node serves to locate a failure, and the buffer control unit 13 selectively 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.