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Conditional access module and verification method based on same

A conditional access module and verification method technology, which is applied in the field of verification method and conditional access module based on the conditional access module, can solve the problems of low verification efficiency and affecting user experience, so as to save time for obtaining system time and improve efficiency effect

Active Publication Date: 2015-05-06
SHENZHEN STATE MICRO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor of this application found that when verifying the CI Plus certificate, the verification efficiency is low, which affects the user experience

Method used

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  • Conditional access module and verification method based on same
  • Conditional access module and verification method based on same
  • Conditional access module and verification method based on same

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Embodiment Construction

[0048] The embodiment of the present invention provides a verification method based on a conditional access module CAM, which is used to improve the efficiency of certificate verification and user experience.

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0050] see figure 1 , an embodiment of a verification method based on a conditional access module CAM in an embodiment of the present invention includes:

[0051] 101. The CAM obtains electric energy from a power supply module in the digital TV host end, and performs p...

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Abstract

An embodiment of the invention discloses a CAM (conditional access module)-based verification method used for improving certificate verification efficiency and improving user experience. The method includes: the CAM acquires electric energy from a power supply model in a digital television mainframe terminal to perform power-on starting; the CAM acquires a certificate of the digital television mainframe terminal; the CAM verifies period of validity of the certificate according to preset system time in a system time module. The embodiment of the invention further provides the CAM used for improving certificate verification efficiency and improving user experience.

Description

technical field [0001] The invention relates to the technical field of digital television, in particular to a verification method based on a conditional access module and a conditional access module. Background technique [0002] The Condition Access Module (CAM, Condition Access Module) is inserted into the CI slot of the all-in-one machine for use. Its main function is to complete the descrambling work. The digital TV host needs to obtain the Transport Stream (TS) from the front end, and then the CAM obtains the encrypted audio and video stream information from the digital TV host through the interface defined by the Personal Computer Memory Card International Association (PCMCIA), and sends the transparent program back to the digital TV host after descrambling to be displayed. [0003] In practical applications, in order to improve the security of program descrambling, the CAM and digital TV host need to obtain the system time, and complete the CI Plus (New Universal In...

Claims

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Application Information

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IPC IPC(8): H04N21/266H04N21/4623H04N21/4627
CPCH04N21/26606H04N21/4623H04N21/4627
Inventor 孙夜明向柄宇车明贤
Owner SHENZHEN STATE MICRO TECH CO LTD