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. 13, 2007
Filed:
Nov. 14, 2002
Toshihiko Okamura, Tokyo, JP;
Hiroaki Anada, Tokyo, JP;
Toshihiko Okamura, Tokyo, JP;
Hiroaki Anada, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In an error correction code decoding apparatus, utilized in the decoding of turbo codes, plural number of backward processing modulesandare provided. In one backward processing module, received data and a priori information are periodically read in the reverse order from memoriesandto calculate backward values. The other backward processing modules are supplied with received data and the a priori information, output from the preset other backward processing module to calculate backward values. The backward processing module reading in from the memories is cyclically changed. A forward processing and soft-output generating modulegenerates a soft-output by exploiting the backward values calculated by the backward processing module which lies directly ahead of the backward processing module reading in the data from the memories.