Method for sending authorization information and its conditional access system front end

A conditional access system and technology for authorization information, which are applied in the field of sending authorization information, a method and the front-end field of a conditional access system, can solve problems such as not being fundamentally solved, and achieve the effects of saving resources, improving system performance, and saving bandwidth

Active Publication Date: 2011-12-21
北京视博数字电视科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] It can be seen from the above that although the bandwidth is saved to a certain extent by distinguishing between different terminals to transmit conditional reception information, for the one-way multimedia receiving terminal, the authorization information is still sent in a cyclic manner, and there is no need for each Therefore, for the one-way multimedia receiving terminal, the above scheme does not fundamentally solve the problems existing in the process of transmitting authorization information on the one-way network

Method used

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  • Method for sending authorization information and its conditional access system front end
  • Method for sending authorization information and its conditional access system front end
  • Method for sending authorization information and its conditional access system front end

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Embodiment approach 1

[0030] The present invention provides a conditional access system front end, such as image 3 As shown, the front end of the conditional access system includes a conditional receiving unit 302; wherein, the conditional receiving unit 302 includes at least an authorization information sending unit 302c, and the authorization information sending unit 302c is used to send the The authorization information is sent to the user terminal; wherein, the sending queue includes an immediate queue, an optimization queue, and / or a lazy queue.

[0031] It can be seen from the above embodiments that the conditional access front end can send authorization information according to the preset sending priority, which not only meets the sending requirements of various authorization information, but also saves bandwidth, saves resources and improves system performance, thereby ensuring that users receive authorization information. The timeliness and completeness of the system ensure that the vital...

Embodiment approach 2

[0045] The present invention also provides a method for sending authorization information, which includes: the conditional receiving unit 302 sends the authorization information to the user terminal according to the sending priority of the sending queue storing the authorization information; wherein, the sending queue includes an immediate queue and an optimized queue , and / or lazy queues.

[0046] Wherein, in this embodiment, if the sending queue is an immediate queue, an optimized queue and an inert queue, the sending priority of the sending queue can be an immediate queue, an optimized queue and an inert queue in order from high to low; The unit sends the authorization information to the user terminal in descending order of sending priority and sending frequency. Wherein, the sending priority of each queue is as described in Embodiment 1, and will not be repeated here.

[0047] As can be seen from the above implementation, the front end of the conditional access system can...

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Abstract

The invention provides a method for transmitting authorization information and a conditional access system front-end thereof. The method comprises that: a conditional access unit transmits the authorization information to a client according to the transmission priority of a transmission queue of the storage authorization information; wherein, the transmission queue comprises an immediate queue, a priority queue, and / or an inertia queue. In the invention, the authorization information is transmitted to the client according to the descending order of the transmission priority, thus satisfying various authorization information transmission requirements, saving bandwidth and resources, improving system performance, guaranteeing the promptness and intactness of reception of the authorization information for users, and preventing the immediate benefit of the operators from being infringed.

Description

technical field [0001] The invention relates to the technical field of digital television, in particular to a method for sending authorization information and a conditional access system front end thereof. Background technique [0002] As we all know, a conditional access system (CAS: Conditional Access System) is used to control users to perform conditional access to broadcast services, and realize paid services of the broadcast system through authorization management. [0003] Such as figure 1 As shown, the user orders the program through the front end, and the front end encrypts the control word CW with the service key, and transmits it in the entitlement control message (ECM: Entitlement Control Message). The front end uses the user key to encrypt the product key, and sends the encrypted product key to the terminal set-top box through the EMM data packet. [0004] The set-top box filters the EMM data packet according to the smart card number, and sends the filtered EMM...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/18H04L1/16H04H60/23H04L12/863
Inventor 余书义吴君鸣卢增祥韩坚王天星王文军李伟东
Owner 北京视博数字电视科技有限公司
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