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Method for protecting broadband video-audio broadcasting content

A broadcasting content, video and audio technology, applied in broadcasting devices, broadcasting system control, broadcasting-related systems, etc., can solve problems such as poor security, achieve the effect of reducing local cost, reducing network bandwidth occupation, and protecting revenue

Inactive Publication Date: 2008-01-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention provides a method for protecting broadband video and audio broadcast content, so as to solve the problem of poor security of broadband video and audio broadcast content in the prior art

Method used

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  • Method for protecting broadband video-audio broadcasting content
  • Method for protecting broadband video-audio broadcasting content

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Embodiment Construction

[0029] The present invention uses different network functional entities to solve two key problems of content protection: authorized reception of channels and anti-digital copying, instead of solving all problems by one system like the conditional reception system of digital TV. Among them, the authorized reception of the channel is realized by the multicast control function of the broadband access device, and the digital copy prevention is realized by the digital scrambling technology; on the basis of the authorized reception of the channel combined with the anti-digital copy, a high reliability, high efficiency, Low-cost broadband TV and broadband digital broadcast content protection technology.

[0030] Since the content of broadband TV or broadband digital broadcasting is sent to users by means of multicast by broadband access equipment, and the broadband network is a two-way network, the present invention utilizes broadband access equipment to complete the multicast authori...

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Abstract

User authority list is saved on broadband access device in the method. When a user applies for receiving a channel, broadband access device determines whether the user is allowed for receiving the channel based on the user authority list. Adding the user to a multicast group, and forwards content of multicast group for users in the multicast group if the user possesses relevant authority. Comparing with existed techniques, the invention solves issue of security existed in content of video and audio broadcast in wide band.

Description

technical field [0001] The invention relates to broadband video and audio technology in a telecommunication network, in particular to a method for protecting broadband video and audio broadcast content. Background technique [0002] In the cable TV network, the video and audio streams are encrypted or scrambled before broadcasting to the network, and then sent to the user through the network, and the user end obtains the key from the network and completes the decryption or descrambling of the program stream. In order to ensure that users can only watch authorized channels, different channels or channel groups must use different keys to encrypt or scramble; the key is broadcast to all terminals, in order to ensure that the key is not easy to be cracked, a complex key is required Management and encryption algorithms, and keys need to be updated frequently in real time. This solution expects to solve two problems at the same time through end-to-end encryption / scrambling: (1) c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/16H04N7/167H04L9/14
CPCH04L2463/101H04L63/065H04L63/062H04N21/4408H04H60/15H04H60/23H04H60/17H04N7/1675H04L63/0428H04N21/23895H04N21/2541H04N21/6405H04N21/64322
Inventor 李军
Owner HUAWEI TECH CO LTD
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