Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2006-09-12
2006-09-12
Lamarre, Guy J. (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S796000, C714S794000, C375S346000, C375S262000, C375S265000, C375S233000
Reexamination Certificate
active
07107514
ABSTRACT:
A Viterbi decoder identifies errors in an early decision output and includes an early decision generator that generates the early decision output. A full decision generator generates a full decision output. An error detector detects errors in the early decision output and generates a disable signal. A secondary early decision generator generates a secondary early decision output. The error detector includes a comparing circuit that disables a prior early decision output if the secondary early decision output is different than the prior early decision output. Alternately, a best path flag generator generates a best path flag when the Viterbi decoder identifies two best paths having the same path metric. A comparing circuit disables the early decision output if a prior secondary early decision output is different than the early decision output, the best path flag is true and a prior best path flag is true.
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Mumford Daniel
Oberg Mats
Lamarre Guy J.
Marvell International Ltd.
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