Pirate examination method of digital television program

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...

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