Method of and system for recording and reproducing...

Details Method of and system for recording and reproducing... Method of and system for recording and reproducing...

2000-12-01

2008-12-16

Tran, Ellen (Department: 2134)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C380S201000

Reexamination Certificate

active

07467305

ABSTRACT:
A method and a system are provided for recording/reading information data using a first recording medium and a second recording medium each having its own identification data. The method comprises reading first encrypted information data encrypted in accordance with an identification data of the first recording medium and recorded in said first recording medium; encrypting the first encrypted information data in accordance with an identification data of the second recording medium, so as to produce second encrypted information data; recording the second encrypted information data in the second recording medium; reading the second encrypted information data from the second recording medium and decoding the second encrypted information data in accordance with the identification data of the second recording medium; and restoring the second encrypted information data into the first encrypted information data and recording the information data in the first recording medium.

REFERENCES:
patent: 5651064 (1997-07-01), Newell
patent: 6574609 (2003-06-01), Downs et al.

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