Information recording and reproducing apparatus

Details Information recording and reproducing apparatus Information recording and reproducing apparatus

2006-05-30

2006-05-30

Lamarre, Guy J. (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S756000, C714S762000, C714S784000, C714S788000, C714S752000

Reexamination Certificate

active

07055082

ABSTRACT:
Errors in a first data signal of a first error correction code system in a reproduced signal are corrected to get first correction-resultant data. Errors in a second data signal of a second error correction code system in the reproduced signal are corrected to get second correction-resultant data. All address information pieces in the second correction-resultant data for every error correction block are subjected to error checks. When at least one of all the address information pieces is correct, a descramble initial value is set in response to the correct address information piece. When all the address information pieces are erroneous, a correct address information piece is estimated from an address information piece associated with a previous error correction block and the descramble initial value is set in response to the estimated correct address information piece. The first correction-resultant data are descrambled in response to the descramble initial value.

REFERENCES:
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patent: 6604220 (2003-08-01), Lee
patent: 09-238085 (1997-09-01), None
patent: 10-312651 (1998-11-01), None
patent: 2002-074664 (2002-03-01), None
“Error Modeling and Performance Analysis of Error-Correcting Codes For the Digital Video Recording System”, Yamamoto et al., SPIE vol. 3864 ISOM 1999.
“Optical Disc System for Digital Video Recording”, Narahara et al., Jpn. J. Appl. Phys. vol. 39 (2000) pp. 912-919.

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