Information security – Prevention of unauthorized use of data including prevention...
Reexamination Certificate
2007-10-16
2007-10-16
Vu, Kim (Department: 2135)
Information security
Prevention of unauthorized use of data including prevention...
C726S027000, C726S028000, C713S164000, C713S165000, C713S166000, C713S182000, C725S026000, C725S028000
Reexamination Certificate
active
09808492
ABSTRACT:
The invention provides an information playback apparatus and method by which enjoyment of a DVD can be restricted with certainty. A disk ID of a DVD video whose enjoyment is to be restricted and a password are stored in a corresponding relationship to each other in a flash ROM. When the DVD video of the disk ID stored in the flash ROM is loaded, a controller permits playback of the DVD video only if the corresponding password is inputted.
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Ogawa Shigeho
Watanabe Hiromasa
Dada Beemnet W
Frommer William S.
Frommer & Lawrence & Haug LLP
Presson Thomas F.
Sony Corporation
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