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:
Oct. 08, 2013
Filed:
Sep. 02, 2010
Timothy D. Anderson, Dallas, TX (US);
Shriram D. Moharil, Allen, TX (US);
Timothy D. Anderson, Dallas, TX (US);
Shriram D. Moharil, Allen, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The present invention provides a means for optimization and re-use of hardware in the implementation of Viterbi and Turbo Decoders using carry save arithmetic. Successful provision for each target application requires that two main issues be confronted. These are: merging the computation of summation terms (a2−b2+c2) with (x2+y2+z2); and (a3+b3−c3) with (x3+y3+z3); implementing an efficient method of computing (a4−b4−c4); and merging this computation with (x4+y4+z4). The invention solves both of these issues and successfully merges the Viterbi instructions with a complete reuse of the hardware that is required for the implementation of Turbo instructions. The hardware required by both classes of instructions is optimized by efficiently employing carry save arithmetic.