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Method for processing contents intended for broadcasting

A processing method and content technology, which can be used in selective content distribution, components of color TVs, components of TV systems, etc., and can solve problems such as non-permission of copying

Active Publication Date: 2010-11-17
NAGRAVISION SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use of broadcast content is generally exclusive and copying is not permitted

Method used

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  • Method for processing contents intended for broadcasting
  • Method for processing contents intended for broadcasting
  • Method for processing contents intended for broadcasting

Examples

Experimental program
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Embodiment Construction

[0038] Such as figure 1 As shown, the video server is the central component of the unit. It is directly linked to its secondary memory DB1 which can be of several types, such as band, optical disk or hard disk. It usually handles the equivalent of a jukebox with all the content (movies) for the broadcast.

[0039] The management module MN is responsible for managing the group. It receives user requests, determines their entitlements, and handles billing. Furthermore, upon acceptance of the user request, it informs the server VS of the content CT and the transmission identifier to be broadcast. According to our example, the key file CT_CW is stored in the database DB2 related to the management module.

[0040] Likewise, the manager MN transfers the key file CT_CW to the generator ECG of control messages. This generator is responsible for receiving the control word CW and preparing the message ECM. It should be noted that the control word CW is preferably stored in encrypt...

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PUM

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Abstract

The aim of the invention is to provide a flexible and easy solution for securing the contents transmitted by video servers to one or more users. To this end, the invention provides a method for processing contents intended for broadcasting, whereby this method comprises the following steps prior to broadcasting: encrypting the content using a number of control words (CW); reserving locations intended for receiving a control message (ECM) in the encrypted content; marking each location with an item of location information in the content; storing a file of keys containing the control words, andduring broadcasting: transmitting the encrypted content to the video server; transmitting the file of the keys to a control message generator; broadcasting the encrypted content via the video server;intercepting the diffused stream by a replacement module; detecting, via the replacement module, locations of the control messages in the diffused content stream, and; applying control messages (ECM)to locations provided to this end by the replacement module.

Description

technical field [0001] The invention relates to the field of on-demand video content broadcasting, in particular to the field of video servers. Background technique [0002] Due to the increasing availability of larger bandwidths, the development of on-demand broadcast-specific video products has opened up new markets. Thus, by using, for example, DSL technology (Digital Subscriber Line), films can be broadcast to users via their telephone lines. Today, speeds of about 2-3Mbits / sec are possible. [0003] For this purpose, the video server can manage multiple lines to the user, where each line broadcasts different content. [0004] These servers access a lot of content representing massive storage capacity. These servers are managed by a management module that manages data related to each user of the broadcast line and handles authorization and billing data. The management module instructs the video server to inform it about what has to be transmitted on each line. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/00
CPCH04N21/21H04N21/23H04N21/4623H04N21/2347
Inventor 琼-佛朗西斯·克莱特奥利维尔·布兰德尔
Owner NAGRAVISION SA