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. 03, 2006
Filed:
Sep. 23, 2002
Lisa Fredrickson, Long Beach, CA (US);
Leilei Song, Red Bank, NJ (US);
Lisa Fredrickson, Long Beach, CA (US);
Leilei Song, Red Bank, NJ (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A Reed Solomon decoder architecture that uses a modified version of the error-evaluator polynomial form having a significantly reduced area of the dominant PDU unit, without loss in iteration time, in slice circuitry, which rotates terms to share a common multiplier and other circuitry. In addition, a B polynomial is stored, and associated overflow flags are implemented, to allow its storage to be minimized using a dual-multiplier arrangement. The decoder for error correcting codes comprises a syndrome calculation circuit, and a polynomial determining unit comprising slices, and a single multiplier in each of the slices, wherein each of the slices is employed a plurality of times in successive clock cycles. A correction circuit comprises a first multiplier employed when a scratch polynomial has overflowed, and a second multiplier employed when not overflowed.