Patent ID: 6292847
Filing Date: 2001-09-18
Classification: G11B

Abstract:
A digital information reproducing apparatus, comprising:a first semiconductor memory into which digital data that has been encoded highly efficiently is stored;a second semiconductor memory into which decoding programs used to carry out decoding that is inverse processing of the high-efficiency encoding are stored, wherein the whole or part of said second semiconductor memory can be rewritten and said second semiconductor memory comprises a read-only memory in which a common portion shared by a plurality of kinds of decoding programs is stored and a rewritable memory into which portions of said plurality of kinds of decoding programs other than the common portion are stored; anda decoding means for decoding digital data stored in said first semiconductor memory according to a decoding program stored in said second semiconductor memory and associated with the digital data stored in said first semiconductor memory,wherein said plurality of kinds of decoding programs is stored in said second semiconductor memory; andsaid decoding means selects a decoding program from among the plurality of kinds of decoding programs according to information concerning encoding which is appended to each digital data, and then carries out decoding.