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Watching control method and device thereof

A technology of control method and security device, which is applied in the direction of analog security/charging system, etc., can solve the problems of harming the interests of operators, and the frequent reset function of users cannot be restricted, so as to achieve the effect of maintaining interests and preventing illegal activities

Inactive Publication Date: 2010-06-23
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 in the process of realizing the present invention that the defect of the prior art is: in the prior art, the number of programs decrypted by the security device at the same time is not restricted, so when some illegal users frequently reset the set-top box or plug and unplug the security device , the user can use the one security device to continuously receive and decrypt multiple programs, and the security device cannot restrict the user's frequent reset function, thus damaging the interests of the operator

Method used

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Embodiment 1

[0028] An embodiment of the present invention provides a viewing control device, such as figure 2 As shown, the device includes a first judging unit 201, a second judging unit 202, and an information prompt unit 203; wherein, the first judging unit 201 is used to judge the reset time of the current reset of the security device and the stored reset time of the last reset Whether the reset time interval is less than the preset reset time limit value; if the first judging unit 201 judges that the result is less than the preset reset time limit value, then the second judging unit 202 is used to judge whether the stored consecutive reset times have reached the reset times Limit value; if the judgment result of the second judging unit 202 is that the number of consecutive reset times reaches the limit value of reset times, the information prompt unit 203 is used to prompt the information that the security device has reached the limit value of reset times.

[0029] In this embodimen...

Embodiment 2

[0042] An embodiment of the present invention provides a viewing control device, such as image 3 As shown, the device includes a first judging unit 201 , a second judging unit 202 , an information prompting unit 203 , and a first updating unit 204 , whose functions are similar to those in Embodiment 1 and will not be repeated here.

[0043] In this embodiment, the reset time of the current reset of the security device can be represented by T2. The reset time of the last reset of the safety device is stored in the safety device, here denoted by T1. This reset time interval is denoted by ΔT. In addition, the reset time T2 of the current reset of the security device may use the first authorization control information received after the security device is reset, for example, the time of the ECM data packet, that is, the current time information carried in the authorization control information. Therefore, the reset time interval ΔT can be: the difference between the time T2 when...

Embodiment 3

[0057] An embodiment of the present invention provides a viewing control method, such as Figure 4 As shown, after the security device of the digital television terminal is reset, the method includes: judging whether the reset time interval between the reset time of the current reset of the security device and the stored reset time of the last reset is less than the preset reset time limit value (see step 401 ); if it is judged that the reset time interval is less than the preset reset time limit value, then further judge whether the stored continuous reset times reach the reset number limit value (step 402); if it is judged that the continuous reset times reach the reset number limit value, then prompt the The information that the security device has reached the limit value of reset times (step 403).

[0058] In this embodiment, the reset time limit value is represented by M, the reset times limit value is represented by N, the reset time limit value is represented by M and t...

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Abstract

The present invention provides a watching control method and a device thereof. The watching control method comprises the following steps: reset time interval of the reset time of the current reset of a safety device and the reset time of stored last-time reset is judged whether is smaller than limit value of preset reset time; if the reset time interval is smaller than the limit value of the preset reset time, stored continuous reset times are further judged whether reaches the limit value of reset times; if the continuous reset times reach the limit value of the reset times, received authority control information is not processed, and the information that the safety device reaches the limit value of the reset times is prompted. By restraining the actions of a reset safety device when users are above some quantity in program watching time, the aim of frequently reset assistance can be reached, and the decryption amount of programs for the safety device can be limited. Thus, users' illegal actions are prevented, and the benefits of operators are maintained.

Description

technical field [0001] The present invention relates to digital television technology, in particular to a 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] Such as 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 device numb...

Claims

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Application Information

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IPC IPC(8): H04N7/16
Inventor 王天星王文军韩坚李东王宇李伟东余书义
Owner 北京视博数字电视科技有限公司