Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2003-01-24
2009-11-03
Ellis, Kevin L (Department: 2117)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S769000
Reexamination Certificate
active
07613986
ABSTRACT:
An ECC block is constituted by RS(248,216,33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16 bytes, parities of 32 bytes (symbols) are caculated. Only the BCA data of 16 bytes and the parities of the former 16 bytes of the 32-byte parities, that is, a total of 32 bytes only, are recorded in a burst cutting area of an optical disc. In decoding, error correction processing is carried out by using the fixed data of 200 bytes. The unrecorded parities of 16 bytes are processed as having been erased. Thus the error correction capability in a burst cutting area of an optical disc can be improved.
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Ishihara Hideshi
Kobayashi Shoei
Moriya Mitsurou
Nijboer Jakob Gerrit
Schep Cornelis Marinus
Ellis Kevin L
Koninklijke Philips Electronics , N.V.
Matsushita Electric - Industrial Co., Ltd.
Nguyen Steve
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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