Encoding decoding apparatus, encoding decoding method, coding and decoding integrated circuit, and encoding and decoding program

摘要

The coding/decoding apparatus which performs coding and decoding at the same time includes: (a) a variable length coding unit which performs, on input data, variable length coding which does not include arithmetic coding, so as to generate first-type stream data; (b) an arithmetic coding unit which performs arithmetic coding on the first-type stream data so as to generate second-type stream data; (c) a first recording area in which the second-type stream date is recorded; and (d) a variable length decoding unit which performs, on the first-type stream data, variable length decoding for decoding a data format of the first-type stream data into a data format applied before the variable length coding is performed, so as to generate output data.