Recording device

Details Recording device Recording device

2008-06-03

2008-06-03

Vu, Kim (Department: 2135)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C726S027000, C711S100000

Reexamination Certificate

active

07383446

ABSTRACT:
A memory card includes a user ID hold unit holding user ID data provided to identify the user of the memory card, a first protection information memory unit holding first protection information restricting access to memory card, and a second protection information memory unit holding second protection information restricting access for each content data. Memory card refers to the user ID data to identify the user of the reproduction apparatus of interest and prohibits any unauthorized user from changing first and second protection information.

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patent: 10-283268 (1998-10-01), None
patent: 11-259964 (1999-09-01), None

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