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:
Dec. 28, 2010
Filed:
Jul. 20, 2007
Hiroyuki Yamagishi, Tokyo, JP;
Keitarou Kondou, Tokyo, JP;
Hiroyuki Yamagishi, Tokyo, JP;
Keitarou Kondou, Tokyo, JP;
Sony Corporation, , JP;
Abstract
Disclosed herein is a decoding apparatus for decoding channel input bits from a partial-response channel output in accordance with a trellis obtained by combining a coding constraint and state transitions of a partial response for a case in which the length of a memory required for describing the coding constraint is greater than the length of a channel memory of the partial response. The apparatus may include a first calculation unit configured to carry out a first calculation on first branch information, which may be defined as information on first branches included in three or more branches merging in a state determined in advance, and first path information defined as information on first paths for the first branches; and a second calculation unit configured to carry out a second calculation on a first calculation value obtained as a result of the first calculation.