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A Method for Preventing Illegal Tampering of Program Content

A program content and illegal technology, applied in the direction of selective content distribution, image communication, electrical components, etc., can solve the problem of lawless elements tampering with legal program content, etc., and achieve the effect of easy promotion and security assurance

Active Publication Date: 2017-05-03
SHANDONG TAIXIN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only ensures that the digital TV program data cannot be illegally used after being intercepted, and cannot solve the problem of criminals tampering with the legal program content in the digital TV system

Method used

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  • A Method for Preventing Illegal Tampering of Program Content
  • A Method for Preventing Illegal Tampering of Program Content
  • A Method for Preventing Illegal Tampering of Program Content

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] Such as Figure 1-Figure 2 As shown, the purpose of the present invention is to solve the possible illegal modification and insertion of the front-end signal during transmission to the terminal equipment.

[0045] Such as figure 1 As shown, the method for preventing illegal tampering of program content, its steps are:

[0046] S1: The scrambler receives the TS stream, analyzes and obtains the PES packet;

[0047] S2: The scrambler encapsulates the check code of the first PES packet, the packet counter and the packet counter of the second PES packet into the ECM packet, and inserts the ECM packet into the TS stream;

[0048] S3: The scrambler sends the TS stream to the modulator;

[0049] S4: The modulator modulates the TS stream and sends it to the terminal;

[0050] S5: The terminal receives the TS stream, analyzes and obtains ECM packets a...

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Abstract

The invention discloses a method for program content illegal tampering preventing. The method comprises the steps that (1) a scrambler receives a TS, and PES groups are obtained by analysis; (2) the scrambler packages check codes and a package counter of a first PES group and a package counter of a second PES group to an ECM package, and the ECM package is inserted into the TS; (3) the scrambler sends the TS to a modulator; (4) the modulator modulates the TS and then sends the TS to a terminal; (5) the terminal receives the TS, and the ECM package and the PES groups are obtained by analysis; and (6) whether the check codes of the first PES group in the ECM package are matched with check codes generated by checking of the corresponding PES group is judged, if yes, the TS is subjected to decoding playing, otherwise, checking errors are hinted, and decoding is stopped. According to the method, program content illegal tampering can be effectively prevented, the content safety of a digital television is guaranteed, achieving is easy, and promoting is easy.

Description

technical field [0001] The invention relates to the field of digital television, in particular to a method for preventing illegal tampering of program content. Background technique [0002] The digital TV broadcasting system includes two parts, the front-end and the terminal. The front-end includes encoders, scramblers, multiplexers, modulators and other equipment. The main function of the encoder in the front-end system is to compress and encode analog video and audio signals into digital Audio and video signals, analog video and audio signals are sampled, quantized and compressed to form elementary stream ES (Elementary Streams), ES is divided into segments, and packaged elementary stream PES (Packetized Elementary Streams) is formed by adding corresponding header files. During transmission, the PES packet is segmented into a fixed-length transport stream TS (TransportStream) or a variable-length program stream PS (Program Stream); the multiplexer receives the TS stream, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2389H04N21/4385
CPCH04N21/2389H04N21/43853
Inventor 陶圣华赵磊潘瑞芬
Owner SHANDONG TAIXIN ELECTRONICS CO LTD
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