Method for real-time inserting signature and verifying signature for digital television programme flow

Abstract

The invention discloses technique for adding digital signature and verification signature in MPEG2 program stream. Using formats of program stream (PS) packet, and packaged essence stream (PES) packet in program stream, as well as associated relation between PES packets, the method insets segmented signatures on corresponding pieces of program stream to the program stream, and validates signatures when program stream is displayed.

Description

technical field [0001] The present invention relates to PS (program stream) technology based on MPEG2 (Moving Picture Experts Group 2), in particular to a technology for adding digital signatures and verifying signatures in program streams based on MPEG2. Background technique [0002] The emergence and rapid development of the MPEG2 standard and its products have undoubtedly brought a profound impact on people's lives. According to statistics, in my country, the variety and quantity of DVD-V have increased significantly for several consecutive years. An increase of 69.49%, and a volume increase of 168.26% to 48.5192 million. This explosive development trend shows that DVD-V will quickly replace VCD as the main carrier of home entertainment. [0003] The development of DVD-V technology and the expansion of the market have greatly reduced the cost of making DVD-V, and the equipment for making DVD-V is readily available. As a result, some illegal organizations stepped in and ...

AI Technical Summary

Problems solved by technology

However, for such illegal DVD-V discs, the current DVD-V technology cannot prevent them well, but can only regulate the market through legislation and manual intervention, which undoubtedly wastes huge manpower and material resources

Due to the decentralized nature of the market, it is difficult for this traditional method to fundamentally stop the production of illegal DVD-V and completely remove DVD-V discs from the market.

Even if such illegal DVD-V discs are found in the market, it is difficult to trace the organization that made them

[0004] In addition, some illegal organizations record the programs provided by pay TV stations without permission, make them into DVD-V discs, and sell them in large quantities, which constitutes a copyright infringement of TV program providers.

Some other forms of ripping DVD-V discs also infringe the copyright of the original work

For this kind of behavior, it is also difficult to trace the infringing institution

Similarly, existing technologies and traditional methods are difficult to prevent these illegal acts

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