Patent ID: 8176368

Claim:
A method for converting compressed data, the method comprising: receiving a stream of compressed data samples having a first compression format, wherein each data sample represents one of n values corresponding to the first compression format; accessing a transcoding table having at least n indexed entries, wherein each of the n indexed entries contains a data value corresponding to a second compression format, wherein the transcoding table is accessed by using each of a portion of received compressed data samples as an index into the table to form a set of transcoded data samples having the second compression format; and replacing the portion of data samples in the stream of compressed data with the set of transcoded data samples to form a stream of compressed data samples having the second compression format, wherein an error in a transcoded data sample is represented by a error value having r bits, wherein the transcoding table contains at least n x r indexed entries, wherein each indexed entry contains a data value corresponding to the second compression format and an associated error value; and wherein the transcoding table is accessed with an index value formed by concatenating a data sample having the first compression format with an error value from a preceding transcoding table access.