BATCH MODE SESSION-BASED ENCRYPTION OF VIDEO ON DEMAND CONTENT

Title:

BATCH MODE SESSION-BASED ENCRYPTION OF VIDEO ON DEMAND CONTENT

Document Type and Number:

WIPO Patent Application WO2005048579

Kind Code:

A3

Abstract:

A Video On Demand (VOD) (130) method consistent with certain embodiments involves processing content to be delivered in a VOD method by selecting first portions of the content for encryption under a selective encryption system and selecting second portions of the content to remain unencrypted. The first and second portions are stored until receiving a request for delivery of the content, the request being from a terminal (50) having decryption capabilities associated with a first decryption method. The first portions are then bulk encrypted to produce encrypted first portions. The encrypted first portions are stored in a buffer. The second portions are queued for delivery to the terminal (50). A stream of selectively encrypted content is assembled from the encrypted first portions and the second portions.

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Inventors:

PEDLOW LEO M JR (US)
AGNIHOTRI DAVENDER (US)

Application Number:

PCT/US2004/032227

Publication Date:

November 30, 2006

Filing Date:

September 30, 2004

Export Citation:

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Assignee:

SONY ELECTRONICS INC (US)
PEDLOW LEO M JR (US)
AGNIHOTRI DAVENDER (US)

International Classes:

H04L9/00; H04N7/173; H04K1/02; H04L9/08; H04N1/44; H04N5/235; H04N5/265; H04N5/91; H04N5/913; H04N5/92; H04N5/94; H04N9/80; H04N

Foreign References:

US7039938B2

2006-05-02

Other References: