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:
Aug. 13, 2019
Filed:
Aug. 11, 2015
Apple Inc., Cupertino, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
A method for data encoding includes receiving a data vector to be encoded into a code word in accordance with a code defined by a parity-check matrix H. An intermediate vectoris produced by multiplying the data vector by a data sub-matrix Hof the parity-check matrix H. A parity part of the code word is derived by applying a sequence of operations to the intermediate vectorbased on a decomposition of a parity sub-matrix Hof the matrix H using matrices A, C, U and V, in which decomposition A is a block triangular matrix that has the same size as H, C is matrix that is smaller than H, and the matrices U and V are placement matrices that are selected so that A, C, U and V satisfy a matrix equation H=A+UCV.