Excavating
Patent
1984-08-02
1986-12-30
Fleming, Michael R.
Excavating
371 70, 371 8, G06F 1100
Patent
active
046334734
ABSTRACT:
A communications interface exchanges serial bit signals between sources differentially, over redundant, two conductor, primary and secondary channels. The primary channel provides the communications link during normal operation, and is monitored to ensure differential operation. In response to primary channel failure, the secondary channel becomes the communications link.
REFERENCES:
patent: 3920975 (1975-11-01), Bass
patent: 4365248 (1982-12-01), Bargeton
patent: 4442521 (1984-04-01), Inaba
Bue Richard L.
Charov Alexander
Ratchford Michael
Chiantera Dominic J.
Fleming Michael R.
United Technologies Corporation
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