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:
Jan. 24, 2012
Filed:
Jul. 31, 2006
Wataru Matsumoto, Chiyoda-ku, JP;
Rui Sakai, Chiyoda-ku, JP;
Hideo Yoshida, Chiyoda-ku, JP;
Takahiko Nakamura, Chiyoda-ku, JP;
Yoshikuni Miyata, Chiyoda-ku, JP;
Wataru Matsumoto, Chiyoda-ku, JP;
Rui Sakai, Chiyoda-ku, JP;
Hideo Yoshida, Chiyoda-ku, JP;
Takahiko Nakamura, Chiyoda-ku, JP;
Yoshikuni Miyata, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A regular quasi-cyclic matrix is prepared, a conditional expression for assuring a predetermined minimum loop in a parity check matrix is derived, and a mask matrix for converting a specific cyclic permutation matrix into a zero-matrix based on the conditional expression and a predetermined weight distribution is generated. The specific cyclic permutation matrix is converted into the zero-matrix to generate an irregular masking quasi-cyclic matrix. An irregular parity check matrix in which the masking quasi-cyclic matrix and a matrix in which the cyclic permutation matrices are arranged in a staircase manner are arranged in a predetermined location.