Device and method of realizing expendable machine card separation in digital television system

A digital TV system, machine-card separation technology, applied to TV system parts, color TV parts, TV, etc., can solve problems that do not meet the needs of digital TV, and reduce communication and computing requirements, communication data volume And the effect of speed reduction and low cost

Inactive Publication Date: 2006-09-20
北京东方广视科技股份有限公司
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  • Abstract
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Problems solved by technology

Adopting the small card solution obviously does not m

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  • Device and method of realizing expendable machine card separation in digital television system
  • Device and method of realizing expendable machine card separation in digital television system
  • Device and method of realizing expendable machine card separation in digital television system

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[0043] The following further describes the present invention in combination with the drawings and specific embodiments, but it is not intended to limit the present invention.

[0044] reference figure 1 As shown, it is a schematic diagram of an expandable machine-card separation interface device in a digital TV system. The entire device is composed of a host 100, an IC card 200, and a USB card 300. The host 100 is a set-top box or an all-in-one machine with a function of receiving digital TV programs, and its core equipment includes a core integrated circuit (IC) 101, an IC card hardware interface 102, a USB card hardware interface 103, and a communication bus 104. The core IC101 realizes the functions of demodulation, demultiplexing and decoding of digital TV programs; the IC card hardware interface 102 realizes the communication between the host 100 and the IC card 200; the USB card hardware interface 103 realizes the communication between the host 100 and the USB card 300; The ...

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Abstract

The apparatus comprises a mainframe, an IC card and a USB card. The mainframe comprises a core integrated circuit for demodulating, de-multiplexing and decoding the digital TV program. The mainframe and the IC card are connected through the hardware interface of the IC card. In the IC card there is a conditionally receiving system, for decoding the authorization data and encryption control word of digital TV, for use in controlling the watching right of user to the specific TV program. In the USB card there is a value added service unit for de-multiplexing, de-scrambling and decoding the digital TV signals. The mainframe is connected to USB card through the hardware interface of the USB card. The IC card and USB card are connected through communication bus in the mainframe.

Description

technical field [0001] The invention relates to the technical field of cable television, in particular to a device and method for realizing scalable machine-card separation in a digital television system. Background technique [0002] In the digital TV system, the conditional access system (Conditional Access System: CAS) is a system that implements access control to certain broadcast services for commercial purposes, and determines whether a digital receiving device can present specific broadcast programs to end users. In a narrow sense, the basic purpose of CAS is to carry out authorization control and authorization management on users in the TV system, so as to realize the paid service of the charging system. It ensures that authorized users can receive corresponding authorized TV programs and services without Authorized users cannot obtain this kind of service. [0003] The separation of machine and card, that is, the separation of CAS and host (set-top box or all-in-on...

Claims

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Application Information

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IPC IPC(8): H04N5/00H04N7/16H04N21/418H04N21/435
Inventor 王晋豫王春江王昱朱峰冯为心
Owner 北京东方广视科技股份有限公司
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