Patent ID: 7486212
Filing Date: 2009-02-03
Classification: H03M,H04N

Abstract:
1. A computer-readable storage medium encoded with instructions that when executed by one or more processors of a processing system cause carrying out a method of processing an ordered series of digital signals that each have an amplitude from a finite set of amplitudes consisting of a most likely-to-occur amplitude and at least one other amplitude, the at least one other amplitude including a next-to-most likely-to-occur amplitude to the most likely-to-occur amplitude, the processing to reduce the amount of data used to represent the digital signals and to form codewords such that on average, the digital signals or sequences of digital signals that have values that are relatively more likely-to-occur are represented by relatively short codewords and the digital signals or sequences of digital signals that have values that are relatively less likely-to-occur are represented by relatively long codewords, the method comprising: for a particular contiguous region in the series: such that relatively short codewords are formed to represent signal values or sequences of signal values that are relatively more likely-to-occur, and relatively long codewords are formed to represent signal values or sequences of signal values that are relatively less likely-to-occur.