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Data card, terminal device, information transmission method and system

A technology for terminal equipment and information transmission, which is applied in image communication, selective content distribution, electrical components, etc. It can solve problems such as inability to play multimedia information, low success rate of descrambling, and failure of descrambling operation, so as to solve performance bottlenecks, Realize synchronous transmission and solve the effect of low descrambling success rate

Active Publication Date: 2011-12-14
ZTE CORP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem in the related art that the descrambling operation fails and the multimedia information cannot be played due to the asynchronous transmission of the CW and the scrambled stream, the present invention proposes a data card, a terminal device, an information transmission method and a system, which can effectively solve the problems in the related art. The problem of low descrambling success rate

Method used

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  • Data card, terminal device, information transmission method and system
  • Data card, terminal device, information transmission method and system
  • Data card, terminal device, information transmission method and system

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Embodiment Construction

[0048]In view of the problem in the related art that the descrambling operation fails and the multimedia information cannot be played due to the asynchronous transmission of the CW and the scrambled flow, the present invention puts the descrambling on the AP side and calculates the descrambling key on the data card side at the same time Finally, the scrambled stream and the corresponding descrambling key are further repackaged into a new data frame, and then sent to the AP for processing and playback by the AP, which can effectively solve the problem of low descrambling success rate in related technologies.

[0049] Embodiments of the present invention will be described below in combination with specific embodiments.

[0050] image 3 It is a flow chart of the steps of the information transmission method in the embodiment of the present invention, such as image 3 As shown, the method includes the following steps:

[0051] In step S301, the sender obtains the scrambling and ...

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Abstract

The invention discloses a data card, a terminal device, and an information transmission method and system, wherein the method includes: a sender acquires a scrambling and descrambling key, and packages the scrambling and descrambling keys together and sends them to a receiver; The receiver receives the encapsulated scrambler and descrambling key, and uses the descrambling key to descramble the scrambled stream to obtain a clear stream. The present invention performs descrambling on the AP side, and at the same time calculates the descrambling key on the data card side, further repackages the scrambled flow and the corresponding descrambling key into a new data frame, and then sends it to the AP for The AP processes and plays, and can realize the synchronous transmission of the key and the code stream, thereby effectively solving the problem of partial descrambling failure in related technologies, and avoiding excessive occupation of processing resources of the data card, and solving the performance bottleneck of the data card.

Description

technical field [0001] The invention relates to the field of data network communication, in particular to a data card, terminal equipment, information transmission method and system. Background technique [0002] With the rapid development of digital mobile multimedia broadcast technology (such as mobile phone TV technology), broadcast sources provide many services for mobile multimedia broadcast terminal users, such as advertisements, weather forecasts, news, sports programs, variety shows, multimedia radio dramas, movies and other programs , users can choose the service programs of mobile multimedia broadcasting according to their own preferences. [0003] A data card is a data service device used on a computer. Users can use mobile data services through the data card to receive multimedia information, and add a broadcast signal receiving chip to the data card to realize multimedia playback. In addition, the data card can integrate and expand multiple functions at the sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2389H04N21/4385
Inventor 韦福
Owner ZTE CORP
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