A method and device for increasing the scrambling speed of dvb data stream
A data flow and speed technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of high hardware computing resources and high hardware costs, and achieve the goal of increasing scrambling speed, reducing quantity, and saving hardware investment Effect
Active Publication Date: 2020-11-20
ZHUHAI GOTECH INTELLIGENT TECH
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Problems solved by technology
Therefore, the traditional scrambling technology requires high hardware computing resources for scrambling and descrambling, so that operators and consumers need to invest high hardware costs
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[0037] Embodiments of the present invention provide a method and device for increasing the scrambling speed of DVB data streams, which are used to solve how to reduce the computing power requirements of hardware resources for scrambling and descrambling, thereby greatly saving the hardware investment of operators and consumers technical problem.
[0038] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present inv...
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The invention provides a method and device for improving the scrambling speed of a DVB data stream. The method comprises the following steps: obtaining a TS data packet in a DVB video data stream, performing PES header information judgment, performing video and key frame judgment, and performing scrambling quantity control. By judging the PES information, the video, and the key frame information in sequence, sequentially judging the information corresponding to the scrambling priority of the data stream, entirely scrambling the TS data packets related to the preferentially scrambled PES packetheader and preferentially scrambling the TS data packets containing key frames, so that the number of the TS data packets that need to be scrambled can be greatly reduced, in this way, the requirements for computing resources are much lower than the requirements of computing resources for TS that scrambles all audio and video, and the problem of how to reduce the computing power of scrambling anddescrambling on the hardware resources is solved, thereby greatly saving the technical problems of hardware investment of operators and consumers.
Description
technical field [0001] The invention relates to the technical field of DVB communication, in particular to a method and a device for increasing the scrambling speed of DVB data streams. Background technique [0002] With the development of modern technology, it has become a habit for people to watch TV, and now digital TV has become a popular trend. People usually need to install a set-top box after buying a TV to play digital TV. [0003] The set-top box obtains the data stream from the Radio and Television Bureau and decodes the video to play. It can also divide TV programs into various types, such as free programs and paid programs. When it comes to paid programs, it is usually necessary to scramble the video stream before the video stream of the program is sent from the broadcasting bureau, that is, the pay TV system needs to use the CSA algorithm to scramble the broadcast DVB audio and video to ensure that the paid content The security is to prevent unauthorized set-to...
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IPC IPC(8): H04N21/2389
CPCH04N21/2389
Inventor 郑圣禄吴涛
Owner ZHUHAI GOTECH INTELLIGENT TECH