Patent ID: 7848441
Filing Date: 2010-12-07
Classification: H03M

Abstract:
1. A method to generate convolution encoded data, comprising the steps of: supplying a convolution encoder comprising (m) stages, wherein (m) is greater than or equal to 1; providing original data; generating convolution encoded original data using said convolution encoder; providing revised data, wherein said revised data comprises a sequence of original bits in combination with a sequence of revised bits; generating an XOR data stream by Exclusive OR'ing said original data with said revised data, wherein said XOR data stream comprises a plurality of changed bits in combination with a plurality of leading zeros and a plurality of trailing zeros; determining whether to use a truncated XOR data stream; if a truncated XOR data stream will not be used, then: forming a convolution encoded XOR data stream using said convolution encoder; and Exclusive OR'ing said convolution encoded XOR data stream with said convolution encoded original data.