Communication system having enhanced reliability

Details Communication system having enhanced reliability Communication system having enhanced reliability

2003-11-04

2009-10-27

Vu, Huy D. (Department: 2416)

Multiplex communications

Fault recovery

Bypass an inoperative channel

C370S224000, C370S245000, C370S250000, C370S244000

Reexamination Certificate

active

07609622

ABSTRACT:
A method for a system including a plurality of encoders each for receiving a first signal and encoding to generate a respective second signal for sending to a respective subscriber, comprising receiving, in each encoder, the first signal from a first source, while testing a signal path between a second source and the encoders, the first source on a first assembly, the second source on a second assembly, and each encoder on a respective third assembly, while each encoder is receiving the first signal from the first source, receiving, in each encoder, a third signal from the second source, generating, from each encoder, a fourth signal based on the third signal, the fourth signal being a redundancy signal and receiving and examining the fourth signal at the second source and subsequently receiving the first signal from the second source.

REFERENCES:
patent: 4719625 (1988-01-01), Bell et al.
patent: 5056090 (1991-10-01), Kubota
patent: 5187706 (1993-02-01), Frankel et al.
patent: 5661779 (1997-08-01), Lee
patent: 6081530 (2000-06-01), Wiher et al.

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