Televiewing control method and device

A control method and receiving front-end technology, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of harming the interests of operators, failing to guarantee operation stability and safety, and harming the interests of users, so as to achieve protection Legitimate rights and interests, the effect of protecting vital interests

Active Publication Date: 2010-06-09
北京视博数字电视科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The inventor finds that the defect of the prior art lies in that in the process of realizing the present invention: the existing digital TV terminal does not impose any restrictions on the flow rate of each program watched, so if an illegal user maliciously uses the security device for many times When receiving at least one program, the security device needs to perform operations such as decrypting it multiple times, resulting in a large workload; in addition, when receiving multiple programs, the security device needs to store a large number of program keys and product keys and other information related to each program. Therefore, due to the limitation of the processing power and storage capacity of the security device, the security device cannot guarantee the operation stability and security, thus damaging the interests of the majority of users and also damaging the operation. business interests

Method used

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Examples

Experimental program
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Embodiment 1

[0028] The present invention provides a viewing control device, such as figure 2 As shown, the device includes a receiving unit 201, a statistical unit 202, a first judging unit 203, and a processing unit 204; wherein, the receiving unit 201 is used to receive the data packet sent by the front end, and the information carried in the data packet includes flow value and limit value; the statistical unit 202 is used to count the current cumulative flow value of the received data packet; the first judging unit 203 is used to judge whether the current cumulative traffic value exceeds a limit value; if the first judging unit 203 judges the result as If yes, then the processing unit 204 does not process the data packet.

[0029] In this way, when the current accumulated traffic value is greater than the limit value, the device does not decrypt the data packet, cannot obtain the control word CW, and thus cannot descramble the TV program, so that the user cannot watch the program.

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Embodiment 2

[0035] The present invention provides a viewing control device, such as image 3 As shown, the device includes a receiving unit 301 , a statistical unit 302 , a first judging unit 303 and a processing unit 304 , whose functions are similar to those in Embodiment 1, and will not be repeated here.

[0036] In this embodiment, in addition to carrying the traffic value and limit value, the data packet may also carry current version information. In this way, if Figure 4 As shown, the statistical unit includes a second judging unit 401 and a counting unit 402; wherein, the second judging unit 401 is used to judge whether the current version information is consistent with the stored version information, if the judging result of the second judging unit 401 is For consistency, the counting unit 402 is configured to count the current accumulated flow value of the received data packet according to the stored accumulated flow value. That is, the current accumulated flow value=the store...

Embodiment 3

[0048] The invention provides a viewing control method, such as Image 6 As shown, the method includes: receiving a data packet sent by the front end, the information carried in the data packet includes a flow value and a limit value (see step 601); making statistics on the current cumulative flow value of the received data packet (see step 602) ; Judging whether the current cumulative flow value exceeds the limit value (see step 603); in step 603, if the judgment result is yes, then the data packet is not processed (see step 604).

[0049] In step 603, if the judgment result is no, the data packet is processed (see step 605). In this embodiment, the data packet may be further decrypted to obtain a descrambling control word, and the program is descrambled by using the descrambling control word, so that the user continues to watch the program.

[0050] In this way, not processing the data packet may mean not decrypting the data packet, so that the control word CW cannot be obt...

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PUM

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Abstract

The invention provides a televiewing control method and device. The method comprises the following steps of: receiving a data packet sent from the front end, wherein information carried in the data packet comprises a flow value and a limit value; making a statistics for a current accumulated flow value of the received data packet; judging whether the current accumulated flow value exceeds to the limit value or not; and not processing the data packet if the judging result is positive. The invention effectively limits the quantity of different program streams simultaneously decrypted by a safety device, thereby limiting the quantity of digital programs descrambled by a terminal, that is to say, limiting the quantity of programs viewed by a terminal user, preventing continuously televiewing a plurality of sets of programs by using one card, effectively protecting the vital interests of service providers and guaranteeing the legitimate rights and interests of the service providers.

Description

technical field [0001] The invention relates to digital television technology, in particular to a digital television viewing control method and device thereof. Background technique [0002] At present, a conditional access system (CAS: Condition Access System) is a system for controlling users to receive broadcast services, and realizes paid services of the broadcast system through authorization management. [0003] The conditional access system controls the broadcast service by scrambling the broadcast data and encrypting the scramble control information. [0004] like figure 1 As shown, the front end uses the product key to encrypt the control word CW, 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. [0005] The set-top box filters the EMM data packet according to the security dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/00H04N7/167H04N7/24
Inventor 王天星王文军李伟东韩坚卢增祥李东
Owner 北京视博数字电视科技有限公司
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