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Composite session-based encryption of video on demand content

A video-on-demand, content technology for selective content distribution, television, electrical components, etc.

Inactive Publication Date: 2010-05-26
SONY ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A major obstacle to interoperability is the area of ​​conditional access systems in modern digital cable networks, the core of addressable subscriber management and revenue collection resources

Method used

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  • Composite session-based encryption of video on demand content
  • Composite session-based encryption of video on demand content
  • Composite session-based encryption of video on demand content

Examples

Experimental program
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Embodiment Construction

[0047] While the invention is susceptible to embodiments in many different forms, specific embodiments are shown in the drawings and described in detail below, it is to be understood that the disclosure of such embodiments herein should be considered as illustrations of principles and not as The invention is limited to the specific embodiments shown and described. In the following description, like reference numerals are used to describe the same, similar or corresponding parts in several drawings.

[0048] Plain text VOD structure system

[0049] Judgments for a particular VOD architecture are the result of interactions between a complex set of unrelated variables and a complex set of correlated variables, providing a solution to the equation of state. Some of these variables are directly fixed as a result of MSO selection. Other variables are constrained by factors such as existing incumbent systems, location, size, available funds and return on investment needs.

[0050]...

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PUM

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Abstract

A Video On Demand (VOD) method consistent with certain embodiments involves processing content 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 on the VOD server. If a request is received from the a device having decryption capabilities associated with a first decryption method only the first portions are routed to the encryption device and the second portions are routed around it. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

Description

[0001] Cross-references to related literature [0002] This application relates to and claims the benefit of US Provisional Patent Application Serial No. 60 / 530071, filed December 16, 2003, to Pedlow, entitled "Composite Session-Based Encryption for Video-on-Demand Content," which is incorporated herein by reference. This application is also related to U.S. Patent Application No. SNY-R4646.01, entitled "Critical Packet Partial Encryption," to Unger et al., Serial No. 10 / 038217; Encryption," to Candelore et al., Serial No. 10 / 038032; Docket No. SNY-R4646.03, entitled "Elementary Stream Partial Encryption," to Candelore et al., Serial No. 10 / 037914; Docket No. SNY-R4646.04, Serial No. 10 / 037499, entitled "Partial Encryption and PID Mapping," to Unger et al., Serial No. 10 / 037499; and Docket No. SNY-R4646.05, entitled "Decoding and Decryption of Partially Encrypted Information," to Unger et al., Serial No. 10 / 037498, all of which were filed January 2, 2002 and are incorporated he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/167
CPCH04N7/17318H04N21/47202H04N21/23473H04N7/163H04N7/1675H04N21/23897H04N21/2347
Inventor L·M·小佩罗
Owner SONY ELECTRONICS INC