General software descrambling method for different scrambling systems of digital television

Abstract

The present invention discloses a method for descrambling the common software which is applied on different scrambling system of the digital television. The method comprises the following procedures: (1) electrifying the system, and running the system actuating software module to complete the system initiation; (2) running the application software module by the system; (3) reading the CA information of the smart card for automatically recognizing the current scrambling system for judging where a matched descrambling software module exists in the descrambling software module base, if not executing the procedure (5); (4) if it is, automatic activating the matched descrambling software module by the application software module to complete the functions of descrambling, deciphering, decoding and program selecting to the received digital signal; (5) springing a human-computer dialogue window to remain the providing of the software upgrading of the manufacturer to the user; and (6) re-electrifying after the software upgrading to operate the system.

Description

technical field [0001] The invention relates to a general software descrambling method, in particular to a general software descrambling method applied to different scrambling systems of digital television. Background technique [0002] From the perspective of the development direction of broadcasting and TV worldwide, digital TV will replace analog TV, followed by pay TV and other value-added services will become the main source of TV industry revenue, so the conditional access (CA) function must be introduced. As a digital TV receiving terminal product, it must not only have the function of digital-to-analog conversion, but also have the functions of conditional access, value-added services, and information interaction. These functions are in the development period. Due to the uncertainty of standards, the continuous updating of technical content, and the differences and invisibility of key technologies, the design mode of digital TV receiving terminal products is unstable...

AI Technical Summary

Problems solved by technology

[0010] In short, in the above two schemes, the problem of the single CA mode is that the manufacturer needs to provide different models and develop corresponding software for different scrambling systems in different regions, which leads to huge investment in software design, high cost, and difficulty in scale production; while the CI model increases the cost of large trucks, and transfers the contradiction from the manufacturer to the operator

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