Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2007-02-27
2007-02-27
Decady, Albert (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S796000
Reexamination Certificate
active
10612678
ABSTRACT:
In a Viterbi decoder, a branch metric calculating operation of a series of received input data is performed according to different sets of target levels to realize a plurality of branch metric values, wherein said target level sets are not identical. Accumulative operations of the branch metric values are performed, respectively, and the plurality of accumulated values are compared in groups. A plurality of control signals and a plurality of least accumulated values are outputted according comparing results of the accumulated values. The least accumulated values are received and stored, and then fed back for next accumulation operations. A plurality of possible output-data state transition tracks are recoded in response to the control signals. The output data are determined according to the least accumulated values and output-data state transition tracks.
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Cheng Kelven
Mar William
Chaudry Mujtaba K.
De'cady Albert
Kirton & McConkie
VIA Optical Solution, Inc.
Witt Evan R.
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