DATA RECORDING AND REPRODUCING APPARATUS HAVING REWRITABLE NON-VOLATILE MEMORY, AND METHOD FOR CHANGING SETTING DATA IN REWRITABLE NON-VOLATILE MEMORY

摘要

PROBLEM TO BE SOLVED: To store various setting information which are inherent to an apparatus, in addition to a control program, into a rewritable non-volatile memory which requires batch erasure for rewriting, and further allow the setting information to be changed without employing the batch erasure. ;SOLUTION: On an FROM 11, in addition to a control program unit 113, data area groups 110-0 to 110-n and table areas 112-0 to 112-n are provided. The total number of each of them corresponds to the number of setting data which are inherent to an apparatus. For example, when the setting data in the data area group 110-0 is required to be changed, the least significant bit among bits indicating '1' in the table area 112-0 is changed so as to indicate '0', thereby switching an effective data area. Then, a new setting data is written into the single effective data area corresponding to the bit which has been newly changed to '0'.;COPYRIGHT: (C)1998,JPO