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:
Oct. 10, 2006
Filed:
Apr. 08, 2003
Frédéric Lehobey, Rennes, FR;
Philippe Piret, Cesson-Sevigne, FR;
Frédéric Lehobey, Rennes, FR;
Philippe Piret, Cesson-Sevigne, FR;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of decoding product codes is disclosed, in which the symbols of each codeword may be placed in a table comprising nrows and ncolumns, such that the symbols constituting each row form a permitted word of length naccording to a first component code able to be decoded by means of an algorithm Afor correction with erasures, and the symbols constituting each column form a permitted word of length naccording to a second component code able to be decoded by means of an algorithm Afor correction with erasures. According to the method, a correction of a row or column is only accepted when the result of the correction is deemed reliable, otherwise all the symbols of that row or column are erased. Devices and apparatus adapted to implement this method are also disclosed. The method is preferably applied to algebraic geometric codes.