Block code error correcting system and method

Details Block code error correcting system and method Block code error correcting system and method

2006-09-20

2010-02-16

Lamarre, Guy J (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C341S059000, C341S162000, C369S044320, C369S053120

Reexamination Certificate

active

07665006

ABSTRACT:
A block code error correcting system is used in a compact disk reading system to increase the decoding capability of the compact disk reading system. The system includes a data slicer, a data bit to channel bit modulation pulse width determinator, a demodulator, an erase address detector and an error correction code (ECC) decoder. A pulse width of an eight-to-sixteen modulation (EFM+) signal is detected to thereby produce an erase control signal when the pulse width of the EFM+ signal is in a predefined window or is an illegal pulse width. A codeword corresponding to the EFM+ signal is set as an erasure, and accordingly an erase address is produced.

REFERENCES:
patent: 6112324 (2000-08-01), Howe et al.
patent: 6511280 (2003-01-01), Sammartino et al.
patent: 2004/0194003 (2004-09-01), Kwon
patent: 2006/0077822 (2006-04-01), Kim

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