Method and apparatus for disc drive data security using a...

Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique

Reexamination Certificate

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C711S206000, C711S112000, C714S006130

Reexamination Certificate

active

11128954

ABSTRACT:
Method and apparatus for storing and retrieving copy-protected data within storage devices such as, for example, disc drives. Data that is to be copy protected is written on the storage device. A first data list, such as a manufacturer's storage device defect list, is copied and used to make a second data list. Then, the first data list is modified such that the area where the copy protected data is stored is identified as defective. Unless a request to read the copy protected data is received, the first data list is used and the copy protected data area is considered defective. However, if a request to read the copy protected data is received, the second data list is used and the copy protected data is read from its storage location.

REFERENCES:
patent: 5930825 (1999-07-01), Nakashima et al.
patent: 6496943 (2002-12-01), Belser et al.
patent: 6771446 (2004-08-01), Noble
U.S. Appl. No. 09/795,623, Noble.

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