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:
May. 15, 2012
Filed:
Jun. 11, 2008
Christopher J. Becker, Palatine, IL (US);
Kevin B. Traylor, Austin, TX (US);
Christopher J. Becker, Palatine, IL (US);
Kevin B. Traylor, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
Methods and corresponding systems in a Viterbi decoder include computing a maximum likelihood (ML) path in a Viterbi trellis in response to executing a first Viterbi algorithm. Thereafter, one or more merge points are selected on the ML path in a second Viterbi algorithm, wherein the merge points each have a path metric difference, which is a difference between an ML path metric at the merge point and a non-surviving path metric at the merge point. Merge points are selected based upon relative path metric differences associated with nodes on the ML path. Next, alternate paths in the Viterbi trellis are computed based on the ML path with alternate paths substituted at corresponding merge points. A passing decoded bit sequence is output in response to passing an error check, wherein the passing decoded bit sequence is associated with one of the one or more alternate paths.