Patent ID: 6154329
Filing Date: 2000-11-28
Classification: G11B,H03M

Abstract:
A data recording apparatus for recording data supplied from an external device in the form of data blocks on a recording medium, said data recording apparatus comprising:a compressing means for compressing at least one of said data blocks to generate respective compressed data blocks;a detecting means for detecting whether or not a data extension has occurred as a result of a compression processing performed by said compressing means, said detecting being performed for each of said compressed data blocks; anda recording means for recording data on said recording medium;wherein when said apparatus is in a compression mode and said detecting means does not detect the occurrence of a data extension, all of said data blocks of said supplied data are compressed and the respective compressed blocks are recorded; andwherein when said apparatus is in a compression mode and said detecting means detects the occurrence of a data extension corresponding to a compressed data block said compressed data block is recorded and a predetermined number of data blocks following said compressed block are not subjected to said compressing and detecting operations and are recorded as uncompressed data blocks, said compressing and detecting operations being resumed after the recording of said predetermined number of data blocks.