Conditional access system

A technology of conditional access system and conditional access module, which is applied to TV system components, analog security/charging systems, electrical components, etc., to achieve the effect of reducing bandwidth usage

Inactive Publication Date: 2009-07-22
IRDETO ACCESS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of known conditional access systems is that the entire packet flow is sent from the receiver to the conditional access module

Method used

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  • Conditional access system
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] figure 1 The shown conditional access system consists of a receiver 1 , a selection module 2 and a conditional access module 3 . The receiver 1 is communicatively connected to the selection module 2 . The selection module 2 is communicatively connected to the conditional access module 3 through a plurality of interfaces, which are typically logical interfaces implemented on a single channel.

[0031] The receiver 1 is configured to receive a digital broadcast signal as an input signal from an external source such as a front end. The receiver 1 is capable of receiving digital broadcast signals. Digital broadcast signals typically conform to standards such as the DVB-H or T-DMB standard for digital terrestrial television for handheld devices or the DVB-T standard for digital terrestrial television. Other examples of digital broadcasting standards are DVB-C, DVB-S, DVB-T2, DVB-C2, DVB-S2, DVB-SH, Media Flo, S-DMB and MBMS. In a manner known per se, the receiver 1 demod...

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PUM

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Abstract

The invention provides an improved conditional access system with efficient bandwidth usage on the interface between a receiver and a conditional access module. The conditional access system has a receiver, a selection module, a conditional access module and possibly a terminal. The conditional access module has a first memory for storing service identifiers of services and transmits one or more service identifiers to the selection module. The selection module receives an input signal from, the receiver and selects from the input signal those sub-signals as identified by the service identifiers and transmits the sub-signals to the conditional access module.

Description

technical field [0001] The present invention relates to a conditional access system, which is suitable for a conditional access module in the conditional access system, a terminal in the conditional access system, and a method for the conditional access system. Background technique [0002] Conditional access systems are commonly used to provide conditional access to services such as pay television. In a conditional access system, a scrambled pay television signal is received by a receiver and descrambled by a conditional access module. The conditional access module can be implemented as a smart card reader with a removable smart card, or as a single module. The descrambled signal can be viewed on a terminal such as a TV, PC or mobile phone. The terminal can be equipped with a specific player implemented in hardware or in software to view the descrambled signal. [0003] In known conditional access systems, a receiver receives a digital video broadcast signal, demodulates...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/16H04N5/00H04N7/24
CPCH04N21/4623H04N21/43607H04N21/4542H04N21/41407H04N21/43853H04N7/165H04N7/24H04N21/4367H04N21/4181
Inventor A·万德维格特
Owner IRDETO ACCESS
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