Copy protection system for recording media

Details Copy protection system for recording media Copy protection system for recording media

1997-04-30

2000-07-25

Le, Dieu-Minh T.

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

360 60, 369 4433, G06F 1130, G06F 1214

Patent

active

060947233

ABSTRACT:
The number of times installation has been performed is recorded in a recording and reproduction area of a recording medium as installation is performed. When an application program is requested to be installed to another recording medium, the number of times installation has been performed is checked and installation is performed only when the number is less than the specified number.

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U.S. application No. 08/750,223, filed Nov. 26, 1996.

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