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:
Feb. 27, 2007
Filed:
Aug. 02, 2002
Hachiro Fujita, Tokyo, JP;
Hideo Yoshida, Tokyo, JP;
Hachiro Fujita, Tokyo, JP;
Hideo Yoshida, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A decoding method of a product code calculates a kth soft output value of each of r Ccodewords [C] (t=1, 2, . . . , r) detected at a codeword generating step. Beginning from t=1, if a kth value of a Ccodeword [C] is zero, a first variable, with a predetermined initial value, is compared with the likelihood of the codeword. The first variable is substituted with the sum of a greater one of the first variable and the likelihood and a correction value of the difference between them. If the kth value is nonzero, then the second variable is updated in the same manner. The update of the first and second variables is carried out with incrementing t from one to r, and the kth soft output value is calculated from the difference between the first and second variables updated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile