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. 21, 2012
Filed:
Mar. 30, 2006
Wataru Matsumoto, Tokyo, JP;
Rui Sakai, Tokyo, JP;
Hideo Yoshida, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An error correction coding apparatus is disposed to generate a low-density parity-check codefrom an input information sequenceby using a low-density parity-check matrix which satisfies a predetermined weight distribution, and includes a low-density parity-check matrix output meansfor forming the above-mentioned low-density parity-check matrix by continuously arranging a number of rows in each of which the same number of cyclic-permutation matrices as the row weight are arranged, the number of rows satisfying the above-mentioned predetermined weight distribution, and then gradually increasing or decreasing the row weight, and for outputting the above-mentioned low-density parity-check matrix.