Patent ID: 8111934
Filing Date: 2012-02-07
Classification: H04N

Abstract:
1. A method for processing a series of digital signals that each have an amplitude from an amplitude set consisting of a first subset of values and a second subset of values, the first subset of values including a most common amplitude and at least one other amplitude, the processing to reduce an amount of data used to represent the digital signals and to form codewords such that the more frequently occurring sequences of values of digital signals are represented by relatively short codewords and the less frequently occurring sequences of values of digital signals are represented by relatively long codewords, the method comprising, forming a codeword for each event of a set of events, each event being a run of none or more signals having the most common amplitude followed by a run of one or more identical sequences of a predefined set of sequences, each sequence in the predefined set of sequences being either a single signal having an amplitude from the second subset of amplitudes or a sequence of one or more signals each having amplitude from the first subset of amplitudes, starting with an amplitude other than the most common amplitude, such that relatively short codewords are formed to represent events that are relatively more likely to occur, and relatively long codewords are formed to represent events that are relatively less likely to occur.