Patent ID: 7620258
Filing Date: 2009-11-17
Classification: H04N

Abstract:
1. A method of processing using hardware that includes one or more processing elements, the processing using the hardware being of an ordered series of digital signals that each has an amplitude from a finite set of amplitudes consisting of the most likely-to-occur amplitude and at least one other amplitude, the at least one other amplitude including a next most likely-to-occur amplitude to the most likely-to-occur amplitude, the processing using the hardware being in order to reduce the amount of data used to represent the digital signals and to form codewords such that the relatively more likely-to-occur values or sequences of values of digital signals are represented by relatively short codewords and the relatively less likely-to-occur values or sequences of values of digital signals are represented by relatively long codewords, the method comprising: for a first contiguous region in the senes: 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.