Method for protecting data recorded on a partial read-only memor

Details Method for protecting data recorded on a partial read-only memor Method for protecting data recorded on a partial read-only memor

1997-01-21

1998-08-04

Elmore, Reba I.

Dynamic information storage or retrieval

Duplication or copying

369 47, 369 53, 711111, G11B 509, G11B 364

Patent

active

057904995

ABSTRACT:
A method and apparatus for preventing generation of third generation data of an original data recorded on a read-only region of a partial read-only memory (ROM) optical disk includes an operation for copying source data from the partial read-only memory to a read-write medium by first attempting to write check data on a read-write region of the partial ROM optical disk. If the check data cannot be written, the copy operation terminates. If the check data can be written, the source data is overwritten. Then, the source data is copied from the partial ROM optical disk to the read-write medium.

REFERENCES:
patent: 5043960 (1991-08-01), Nakao et al.
patent: 5226027 (1993-07-01), Bakx
patent: 5517632 (1996-05-01), Matsumoto et al.

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