H - Electricity – 03 – M
Patent
H - Electricity
03
M
354/223.1
H03M 13/00 (2006.01) G06F 11/08 (2006.01) G06F 11/10 (2006.01) G11B 20/18 (2006.01) H03M 13/29 (2006.01)
Patent
CA 1220869
ABSTRACT OF THE DISCLOSURE Error correction of digital signals is suited for codes having error detection and correction words, such as doubly-encoded Reed-Solomon code. In a first decoding, at least error detection is effected and flags indicating decoding conditions are added. In a second decoding, error detection for first code blocks and error correction for S2 words at unknown locations and E flagged word erasures, where d1 is a Hamming distance and S2 and E satisfy a relation of 2S2+E?d1-1, are parallelly or sequentially effected, and a combination of S2 and E having a high correction capability and a low probablility of miscorrection is selected from a plurality of correction results of error locations and the numbers of flags added at the first decoding, and the word errors are corrected based on the selected combination.
466564
Arai Takao
Kimura Hiroyuki
Kobayashi Masaharu
Noguchi Takaharu
Okamoto Hiroo
Gowling Lafleur Henderson Llp
Hitachi Ltd.
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