Error correction device of optical disk unit

Details Error correction device of optical disk unit Error correction device of optical disk unit

2006-06-23

2009-11-03

Chase, Shelly A (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

07613983

ABSTRACT:
An error correction device for an optical disk reproduction unit for reproducing recorded information from an optical disk recorded with a code row data added with an error code in the same direction as a sequence of recorded information in the recording portion of the optical disk, and recorded guide information recorded in an inerasable state as a guide for recording the code row data before the code row data is recorded, wherein a prepit decoder as a first position detection portion is configured to detect a physical configurational singular point in the recorded guide information as a first position, a second position generating portion is configured to generate a second position replacing the first position detected by the prepit decoder with the code row data position, and an error correction circuit is configured to erase-correct error in the code row data using the second position.

REFERENCES:
patent: 4764927 (1988-08-01), Izumita et al.
patent: 5696774 (1997-12-01), Inoue et al.
patent: 5901159 (1999-05-01), Ichikawa
patent: 2000-132868 (2000-05-01), None
patent: 3286205 (2002-03-01), None
patent: 2004-95081 (2004-03-01), None

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