Digital TV broadcast system and method

A technology of digital TV broadcasting and digital TV, applied in the direction of analog security/charging system, user identity/authority verification, etc., can solve the problem of reducing the security of digital TV broadcasting system, and achieve good scalability, easy expansion and good compatibility Effect

Inactive Publication Date: 2006-12-06
INST OF INFORMATION ENG CAS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In the prior art, the first and second problems have been solved to a certain extent, but the third and fourt

Method used

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  • Digital TV broadcast system and method
  • Digital TV broadcast system and method
  • Digital TV broadcast system and method

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] In order to improve the security of the entire digital broadcasting system, especially to solve the problem that TV program providers broadcast illegal TV program signals and illegal personnel insert illegal TV programs through the control transmission network, the present invention issues digital Digitally sign the TV program video stream, superimpose the digital signature result and digital license certificate on the video stream, verify the legitimacy of the digital license certificate on the terminal side, and verify whether the digital signature is correct, thereby effectively improving the system security.

[0047] figure 2 A schematic diagram of a digital television broadcasting system according to the present invention is shown. Such as figure 2 As shown, the digital television broadcasting system 200 according to the presen...

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Abstract

The digital TV broadcast system comprises: a TV program providing subsystem, a TV signal broadcast system, a network transmitting subsystem and a terminal play subsystem. Further, it can comprise a digital license authorizing subsystem used for providing the digital license for the TV program providing subsystem. Wherein the TV program providing subsystem further comprises a TV program digital signature device used for making digital signature for the video steam of TV program, and then adds the digital signature and digital license into the video stream transmitted in the network transmitting subsystem; the terminal play subsystem further comprises a security certification device used for examining validity of the digital license in the video stream according to its upper level certificates, and deciding if the video stream will be played or be rejected.

Description

technical field [0001] The invention relates to digital television technology, in particular to a digital television broadcasting system and method. Background technique [0002] With the development of science and technology, digital TV technology came into being. Because digital TV technology has the advantages of high transmission quality, wide range, many users, and fast speed, it will gradually replace traditional analog TV, so it has a very broad market prospect. [0003] figure 1 The basic structure of the existing digital TV broadcasting system is shown. From figure 1 It can be seen that a digital TV broadcasting system 100 includes a TV program providing subsystem 101 , a TV signal broadcasting subsystem 102 , a network transmission subsystem 103 and a terminal playing subsystem 104 . Wherein the TV program provider provides the digital TV program video stream to the TV signal broadcasting subsystem 102 through the TV program providing subsystem 101; the TV sign...

Claims

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Application Information

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IPC IPC(8): H04N7/16H04L9/32
Inventor 冯登国荆继武王晶吴晶晶
Owner INST OF INFORMATION ENG CAS
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