The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2006
Filed:
Oct. 31, 2002
Hachiro Fujita, Tokyo, JP;
Yoshikuni Miyata, Tokyo, JP;
Takahiko Nakamura, Tokyo, JP;
Hideo Yoshida, Tokyo, JP;
Hachiro Fujita, Tokyo, JP;
Yoshikuni Miyata, Tokyo, JP;
Takahiko Nakamura, Tokyo, JP;
Hideo Yoshida, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A decoding apparatus generates error position sets of data sequence by generating a codeword from positions of soft input values output from a low reliability position detecting circuit and from syndromes computed by a syndrome calculation circuit. The recording apparatus further includes a codeword candidate generating circuit that computes correlation mismatch amounts by adding soft input values at the error positions contained in the error position sets, and updates the correction information according to the error position sets and correlation mismatch amounts. The decoding apparatus can calculate the soft output values accurately by utilizing the generated codeword candidates efficiently, and reduce the circuit scale by decreasing the amount of computation.
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