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. 24, 2012
Filed:
Feb. 24, 2006
Cyril Valadon, Letchworth, GB;
Cyril Valadon, Letchworth, GB;
MStar Semiconductor, Inc., , KY;
MStar Software R&D, Ltd., Shenzhen, CN;
MStar France SAS, Issy les Moulineaux, FR;
MStar Semiconductor, Inc., , TW;
Abstract
A method of calculating backward computations branch metrics for a butterfly in a trellis of a MAP-genre decoding algorithm includes providing initialized branch metrics for the transitions in the butterfly and incrementing the branch metrics with a group of data values corresponding to the transitions in accordance with control signals derived from the butterfly index and one or more polynomials describing tap positions of the encoding equipment to whose operation the trellis relates, wherein the group comprises systematic bit and parity bit values.