Patent ID: 6441755
Filing Date: 2002-08-27
Classification: H03M

Abstract:
A device for entropy encoding of information words, comprising:means for assigning a reversible code word from a group of reversible code words to an information word which is located within a region of information words, the group of reversible code words being designed such that, for each information word within the region, there is provided one specific reversible code word each; means for producing a predetermined additional code word for an information word which is located outside the region of information words, for producing an additional value for the information word located outside the region of information words, and for assigning a non-reversible variable length code word from a group of non-reversible variable code words to said additional value, with an escape region being produced that is separated from the data stream of reversible code words and consists of non-reversible variable length code words, there being always assigned one code word of the escape region to one of the predetermined code words of the data stream of reversible code words each; and data stream formatting means connected to the means for assigning and to the means for producing and being arranged to produce a data stream of reversible code words comprising only reversible code words for information words within said region and comprising predetermined reversible code words for information words outside said region.