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:
Jul. 08, 2008
Filed:
Jul. 21, 2004
Philippe Piret, Cesson-Sevigne, FR;
Philippe Le Bars, Thorigne-Fouillard, FR;
Frederic Lehobey, Rennes, FR;
Philippe Piret, Cesson-Sevigne, FR;
Philippe Le Bars, Thorigne-Fouillard, FR;
Frederic Lehobey, Rennes, FR;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention concerns an encoding method in which encoding is performed of any information word a of length k in the form of a word ν belonging to a Reed-Solomon code C of dimension k' and length n′ (with n′−k′=n−k) such that the components of ν′ situated in (n′−n) arbitrary predetermined positions be systematically equal to respective predetermined constants (for example, all zero). The possibility then exists of deleting those components of fixed value to obtain a word ν of length n belonging to a code C, which thus constitutes a code that is shortened with respect to code C. The invention also relates to devices and apparatuses adapted to implement the encoding method. The invention may be used for encoding by means of an algebraic geometric code, when such encoding may be implemented by encoding by means of a plurality of shortened Reed-Solomon codes.