1990-11-27
1993-09-21
Atkinson, Charles E.
Excavating
371 205, 371 681, G01R 3128
Patent
active
052475220
ABSTRACT:
A primary transceiver having a driver/receiver initially drives a bus while a secondary transceiver having a driver/receiver receives the signals present on the bus. The system compares the signals received by the secondary driver/receiver and the inputs to the primary driver/receiver. If a difference is detected, the system controller disables the primary driver/receiver and enables the secondary driver/receiver which drives the bus.
REFERENCES:
patent: 3920975 (1975-11-01), Bass
patent: 4622669 (1986-11-01), Pri-Tal
patent: 4631719 (1986-12-01), Huffman et al.
patent: 4847838 (1989-07-01), Kralik
patent: 4958347 (1990-09-01), White et al.
Atkinson Charles E.
Digital Equipment Corporation
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