Non-machine specific optical-media based copy protection

Details Non-machine specific optical-media based copy protection Non-machine specific optical-media based copy protection

2011-08-23

2011-08-23

Zee, Edward (Department: 2435)

Information security

Prevention of unauthorized use of data including prevention...

Copy detection

C726S033000, C726S031000

Reexamination Certificate

active

08006313

ABSTRACT:
A method of preventing use of an illegally copied optical medium comprises the step of identifying the media type of the optical medium to determine whether the optical medium is an original version or an unauthorized copy. If the media type indicates that the optical medium is an original version, use of the optical medium is not prevented. If the media type indicates that the optical medium is an unauthorized copy, use of the optical medium is inhibited. The media type can be identified by reviewing a medium-type code field contained in a mode parameter header of the optical medium, which corresponds to the media type of the optical medium, and is a feature integrated into the media that cannot be copied.

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