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Pirate examination method of digital television program

An inspection method, technology for digital television, used in analog security/toll systems, transmission in the gigahertz band, etc.

Inactive Publication Date: 2010-06-16
CHENGDU DOYEN INFORMATION MEDIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some network operators may steal the program from other cable networks for broadcast in order to avoid paying the viewing fee to the program operator.

Method used

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  • Pirate examination method of digital television program
  • Pirate examination method of digital television program
  • Pirate examination method of digital television program

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Embodiment Construction

[0013] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0014] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0015] Such as figure 1 As shown in the watermark information transmission process, the encrypted program is transmitted to the designated satellite through the head end of the program operator, and then transmitted through the satellite; the cable front end first receives the program signal transmitted by the satellite through the satellite receiver, and outputs the video signal; at the same time, the watermark generator receives the program ...

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Abstract

The invention discloses a pirate examination method of a digital television program, comprising the following steps: firstly, subtransparent watermark information including an intelligent card number is embedded in a video output by a front-end satellite television receiver; secondly, the intelligent card number is read out from the implicit watermark information of the frame displayed in the television program by a monitoring user designated by a program operator in a cable network, and then the network operator buying the intelligent card number is determined, so that copyright pirate can be clarified. By using the method, pirated cable network signal source can be quickly located needless of operating head end of the program operator; pirate examination does not require sending fingerprint information around the national network and does not affect the watching of other users.

Description

technical field [0001] The invention relates to the field of digital television, in particular to a method for checking digital television program piracy by superimposing watermarks. Background technique [0002] After the digitization of TV programs, it becomes very easy to transmit and copy the program content, but the copyright management of TV programs becomes more difficult. How to effectively transmit and manage TV programs has become the top priority that program operators need to seriously consider and care about. . [0003] At the front end of the cable network, the encrypted program is decrypted into a transparent program through a satellite TV receiver, and then broadcast in the cable network. However, some network operators may steal the program from other cable networks for broadcast in order to evade payment of viewing fees to the program operator. [0004] In the field of digital TV, the copyright control of programs is mainly protected by CA (Conditional Ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/16H04N7/20
Inventor 许胜武王忠荣曾泽君罗欢
Owner CHENGDU DOYEN INFORMATION MEDIA
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