Patent ID: 6499084
Filing Date: 2002-12-24
Classification: G06F,G11B,G11C

Abstract:
A digital recording and reproducing apparatus which is capable of having a removable external memory mounted therein, for performing recording of recording data in the external memory and reproduction based on the recording data recorded in the external memory,the digital recording and reproducing apparatus comprising: an identification data-generating block for generating identification data for use in determining whether or not the recording data was rewritten; an internal memory in which the identification data can be recorded; and a control block for recording the identification data in the external memory as part of the recording data and at the same time recording the identification data in said internal memory in a manner correlated to a title of a file to be recorded in FAT data concerning the recording data, wherein when said control block reads in the recording data from the external memory, if the identification data corresponding to the title of the file in the FAT data concerning the recording data read in from the external memory exists in said internal memory, said control block compares the existing identification data and the identification data recorded in the recording data read in with each other, and carries out predetermined processing if the compared identification data are different from each other.