Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2007-06-26
2007-06-26
Chung, Phung My (Department: 2138)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S795000, C375S341000
Reexamination Certificate
active
10161228
ABSTRACT:
A recording and reproducing apparatus having an ECC-less error correction function, includes an erasure detector generating an erasure flag indicating erasure of a read signal; and an iterative decoder having two soft-in/soft-out (SISO) decoders, i.e., an inner decoder and an outer decoder, and correcting the erasure by inputting the erasure flag ekinto the inner decoder and performing erasure compensation in the inner decoder. As the erasure compensation in the inner decoder, channel information is masked while the erasure flag is on. The erasure of data due to a media defect is detected inside the iterative decoder, and the second erasure flag is inputted into the inner decoder to perform erasure compensation in the inner decoder.
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Morita Toshihiko
Sato Yuichi
Sugawara Takao
Chung Phung My
Greer Burns & Crain Ltd
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