Information security – Prevention of unauthorized use of data including prevention...
Reexamination Certificate
2011-01-18
2011-01-18
Tran, Ellen (Department: 2433)
Information security
Prevention of unauthorized use of data including prevention...
Reexamination Certificate
active
07874003
ABSTRACT:
An information recording medium, storing: main contents having constituent data according to a predetermined format and subcontents having constituent data not according to the predetermined format, as recorded data; the main contents and the subcontents having constituent data established as contents management units; the contents management units including data stored as encrypted data based on individual unit keys associated respectively with the contents management units.
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Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
Tran Ellen
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