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
Shriram D. Moharil, Allen, TX (US);
Timothy D. Anderson, Dallas, TX (US);
Shriram D. Moharil, Allen, TX (US);
Timothy D. Anderson, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Low density parity check (LDPC) decoding can be mapped to a class of DSP instructions called MINST. The MINST class of instructions significantly enhance the efficiency of LDPC decoding by merging several of the functions required by LDPC decoders into a single MINST instruction. This invention is an efficient implementation of the MINST class of instructions using a configurable three input arithmetic logic unit. The carry output results of the three input arithmetic logic unit enable permit boundary decisions in a range determination required by the MINST instruction. The preferred embodiment employs 2's complement arithmetic and carry-save adder logic. This invention allows reuse of hardware required to implement MAX* functions in LDPC functions.