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. 25, 2003
Filed:
Jun. 07, 2001
Applicant:
Inventors:
Kouhei Yamamoto, Tokyo, JP;
Toshiyuki Miyauchi, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M 7/00 ; H03M 1/300 ;
U.S. Cl.
CPC ...
H03M 7/00 ; H03M 1/300 ;
Abstract
A decoder has a reduced circuit dimension that does not adversely affect the decoding performance of the circuit. The decoder includes an addition/comparison/selection circuit added to give the log likelihood and adapted to compute a correction item expressed in a one-dimensional function relative to a variable and add a predetermined value to the correction term in order to provide a unified symbol for identifying the positiveness or negativeness of the log likelihood for the purpose of computing the log likelihood.