Drive method compatible with various smart cards

A driving method and technology of smart card, applied in the direction of program loading/starting, components of color TV, components of TV system, etc., can solve problems such as being unfavorable to the stability and management of the bottom layer of the set-top box, and increasing the development and maintenance costs of the set-top box system. , to achieve the effect of improving compatibility and versatility, avoiding frequent replacement, and ensuring effectiveness

Active Publication Date: 2010-08-25
HISENSE BROADBAND MULTIMEDIA TECH
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Problems solved by technology

In this way, it will not only increase the development and maintenance costs of the set-top box system

Method used

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  • Drive method compatible with various smart cards
  • Drive method compatible with various smart cards
  • Drive method compatible with various smart cards

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Embodiment Construction

[0021] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] First, briefly introduce the necessity and significance of the technical proposal of the present invention: Taking a set-top box as an example, its software structure can be divided into a driver layer, an intermediate layer and an application layer from bottom to top. In order to meet the needs of various markets, the three software layers mentioned above must be involved when CA systems of different manufacturers are integrated in the set-top box. For set-top boxes integrating different CA systems, it is very important to ensure the stability and unity of the driver layer. Compatibility with multiple smart cards is beneficial to maintaining the stability and unity of the driver layer and avoiding the trouble of frequently replacing the underlying drivers for various markets and products.

[0023] F...

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Abstract

The invention discloses a drive method compatible with various smart cards. The drive method comprises the following steps: obtaining the type of conditional access (CA) system, selecting default protocol type as the current protocol type of smart card according to the type of conditional access system; setting the initialization parameter of smart card according to the default protocol type; resetting smart card, if reset is successful, calling communication interface to communicate, and if not, setting the initialization parameter of the smart card again. By using the drive method of the invention to drive smart card, corresponding initialization settings are performed to smart cards with different CA systems, automatic switching between the smart cards with the same type and different protocols can be realized, the normal reset and communication of all the supportable smart cards can be ensured, and the compatibility and universality of the smart card drive system can be increased.

Description

technical field [0001] The invention relates to a smart card driving method, in particular to a driving method compatible with various smart cards. Background technique [0002] The conditional access (CA) system is used to digitally scramble the content of digital TV programs to establish an effective charging system, which is called the technical guarantee system for the healthy development of digital TV. As the most important device for the security of the CA system, the smart card completes all decryption functions on the client side. According to the operation mode of the current CA system, generally only one CA system is configured in a set-top box, and the set-top box supports the smart card corresponding to the CA system to realize the conditional reception of digital TV programs. [0003] Since the CA encryption systems used by radio and television operators in various regions are not necessarily the same, the set-top box as a client system needs to integrate a var...

Claims

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Application Information

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IPC IPC(8): G06F9/445H04N5/00H04N7/16
Inventor 张丽萍
Owner HISENSE BROADBAND MULTIMEDIA TECH
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