Patent ID: 6486803
Filing Date: 2002-11-26
Classification: H04L

Abstract:
A method of generating an output symbol, wherein the output symbol is selected from an output alphabet and the output symbol is such that an input file, comprising an ordered plurality of input symbols each selected from an input alphabet, is recoverable from a set of such output symbols, the method comprising the steps of:determining, for a given output symbol, a list AL that indicates W associated input symbols, within a subset S of the input symbols comprising the input file, to be associated with the output symbol, where W is a positive integer, where at least two output symbols have different values for W associated therewith, where W is greater than one for at least one output symbol, and where the number of possible output symbols is much larger than the number of input symbols in the input file; and generating an output symbol value from a predetermined function of the W associated input symbols indicated by AL.