Error correction method in full response read channels

Details Error correction method in full response read channels Error correction method in full response read channels

2005-06-07

2005-06-07

Torres, Joseph D. (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C375S341000

Reexamination Certificate

active

06904559

ABSTRACT:
The present invention provides an error correction method that is used in full response read channels. This method includes the steps of: obtaining a read signal from a storage medium and converting the read signal into channel bits that are recorded in the storage medium, such as a DVD disk, in the NRZI format; and using the Viterbi detector to determine whether bit state transitions in the channel bits occur within a predetermined run-lengths of the RLL codes. If transitions occur within the predetermined run-lengths, then the values of the bits with state transitions are corrected.

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patent: 6148043 (2000-11-01), Fujimoto

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