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:
Dec. 09, 2003
Filed:
Mar. 15, 2000
Christopher P. Zook, Longmont, CO (US);
Cirrus Logic, Inc., Freemont, CA (US);
Abstract
Using a Berlekamp-Massey process operating with unique recursion rules, a fast correction subsystem performs, for each t-byte codeword having m-bit symbols, a series of error locator iterations, followed by a series of error evaluator iterations, followed by a series of correction iterations to generate and use an error pattern for correcting a codeword. The fast correction subsystem includes three sets of registers and various multipliers distributed over t+1 component slices. In accordance with the recursion rules and multiplier implementations, only three types of registers ( ) are required per slice and all operations are preferably performed in m/2 or less clocks. A first set of registers (“&sgr; registers”) ultimately contains quantities which include coefficients of an error locator polynomial for the codeword. A second set of registers (“&tgr; registers”) are utilized, e.g., to update the &sgr; registers A third set of registers (“R registers”) ultimately contains quantities which include coefficients of an error evaluator polynomial for the codeword.