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:
Feb. 28, 2017
Filed:
Jul. 24, 2015
Tidal Systems, Inc., Santa Clara, CA (US);
Yingquan Wu, Palo Alto, CA (US);
Tidal Systems, Inc., Santa Clara, CA (US);
Abstract
A quasi-cyclic LDPC encoding apparatus is disclosed wherein a matrix H of the form [0 T; D E] is used, where T is a triangular matrix and D and E are arbitrary matrices selected to improve encoding performance. T and E vary with the size of an encoded data word whereas D is maintained constant. T and E are sparse such that encoding operations performed on them are computationally simple. Likewise D and its inverse are constant and pre-computed further reducing computation. T, E, and D and the inverse of D may be constrained to be quasi-cyclic, which reduces storage required to represent them and enables the performance of encoding operations using shift registers.