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Method and equipment for raising safety of data flow transmission in mobile TV system

A technology for television systems and data streams, applied in the field of data communication, can solve the problems of increasing system construction and operating costs, increasing system complexity, and impacting user experience, and achieving the effects of increasing complexity, being easy to implement, and enhancing complexity.

Inactive Publication Date: 2010-08-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the introduction of digital rights management systems has also created new problems
Firstly, the digital rights management system increases the complexity of the system; secondly, the patent fees related to the digital rights management system will further increase the construction and operation costs of the system
In addition, the current digital rights management system is not very mature, and there are many systems; in most cases, the generation of program licenses is related to the specific configuration of the terminal used by the user. If the user wants to forward or store the program, it will result in a license The failure of this situation has caused a considerable impact on the user experience

Method used

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  • Method and equipment for raising safety of data flow transmission in mobile TV system
  • Method and equipment for raising safety of data flow transmission in mobile TV system
  • Method and equipment for raising safety of data flow transmission in mobile TV system

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Embodiment Construction

[0050] Providing encryption functions in the handheld TV broadcasting system can enable operators to customize the entire handheld TV broadcasting system more flexibly. Considering the cost and complexity of the encryption operation, the present invention provides a method for implementing data stream encryption by using user keys and shift registers for the handheld TV broadcasting system.

[0051] At present, mainstream handheld TV systems all use OFDM (Orthogonal Frequency Division Multiplexing) modulation, and the corresponding system frame structure divisions are basically similar. The frame structure of the system can be divided into daily frame, time frame, sub-frame, second frame, super frame, data frame, etc. from large to small, and the daily frame, time frame, sub-frame and second frame are all synchronized with the natural time. Figure 1 shows a typical frame structure of the current handheld TV system. Under this scheme, the superframe structure in the system is e...

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Abstract

A method for raising safety of data stream transmission in hand TV system includes carrying out enciphering on MAC data packet by pseudo-random sequence generated from shift register at sending end, carrying out deciphering on enciphered MAC data packet by pseudo-random sequence generated from shift register at received end and carrying out inclusive-OR operation on data stream by random sequencegenerated from shift register for providing a new and simple safe-enciphering means on said hand TV system.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a data stream encryption method, a data stream transmission method, a sending end device and a receiving end device in a handheld television system. Background technique [0002] Handheld TV is also called mobile TV or handheld TV. As the name suggests, handheld TV is to watch TV programs through mobile terminals, that is to say, to realize digital TV programs, streaming media and other data services through mobile networks. [0003] The handheld TV business can greatly enrich people's daily life and information exchange, and has great market potential. Therefore, handheld TV has become a research and development hotspot in the next stage of the industry. Naturally, the meaning of a mobile terminal has also been extended to various mobile terminals, such as vehicle-mounted equipment, notebook computers, hand-held personal terminals, and so on. [0004] At present, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/22H04N7/16
Inventor 吴更石吴绍权李峰
Owner HUAWEI TECH CO LTD
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