Obscuring data in an audiovisual product

Details Obscuring data in an audiovisual product Obscuring data in an audiovisual product

2011-03-22

2011-03-22

Tran, Thai (Department: 2484)

Motion video signal processing for recording or reproducing

Process of generating additional data during recording or...

Additional data controlling recording or playback operation

C386S248000, C386S254000

Reexamination Certificate

active

07912351

ABSTRACT:
Access to an audiovisual product is controlled by obscuring data. Cells420of audiovisual data A, B, C are reproduced by a sequence instruction410(e.g. a PGC or Program Chain). One such sequence instruction410acorrectly reproduces the audiovisual data A, B, C, but is hidden amongst many other sequence instructions410bwhich incorrectly reproduce the sequence of cells420(e.g. as BAC, ACB, CAB, etc.).

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