Protecting decrypted compressed content and decrypted...

Details Protecting decrypted compressed content and decrypted... Protecting decrypted compressed content and decrypted...

2007-04-10

2007-04-10

Barron, Gilberto (Department: 2132)

Cryptography

Video cryptography

Copy protection or prevention

C726S026000

Reexamination Certificate

active

11176661

ABSTRACT:
Theft of decompressed digital content as the content is being rendered is prevented. A requested slow-down of the rendering of the content is detected. Transfers of relatively large amounts of data are detected. A re-compressor-based requested slow-down of the rendering of the content is detected. A re-compressor re-compressing the content is detected. In each situation, the detected activity is presumably initiated by a content thief attempting to steal the content. In each situation, the detected activity is responded to in a manner designed to frustrate the presumed attempt of the content thief to steal the content.

REFERENCES:
patent: 6549948 (2003-04-01), Sasaki et al.
patent: 6615275 (2003-09-01), Yohe et al.
patent: 6785815 (2004-08-01), Serret-Avila et al.
patent: 6978370 (2005-12-01), Kocher

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