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Method and apparatus for enlarging DVB-CI functionality by enabling direct access to conditional access module

A user interface and application program interface technology, applied in the field of digital video broadcasting system, can solve problems such as user confusion

Inactive Publication Date: 2004-04-21
THOMSON MULTIMEDIA SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these differences coexist in the same set-top box, which confuses users

Method used

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  • Method and apparatus for enlarging DVB-CI functionality by enabling direct access to conditional access module
  • Method and apparatus for enlarging DVB-CI functionality by enabling direct access to conditional access module
  • Method and apparatus for enlarging DVB-CI functionality by enabling direct access to conditional access module

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Embodiment Construction

[0027] Figure 1 illustrates an overview of the present invention, where a proprietary CA API concept and a standard API concept coexist.

[0028] On the one hand, the application part of the set-top box processes the objects of the conditional access module through a dedicated application program interface, as shown in the mentioned conditional access module 120, but no matter how the conditional access module is, the data channel remains consistent. Each conditional access module may have its own dedicated API in addition to the standard API. The conditional access module communicates with the DVB-Common Interface through the driver 100 including four communication layers. These layers are: session layer 101 , transport layer 102 , link layer 103 and physical layer 104 .

[0029] On the other hand, DVB-Common Interface also has a driver 100 which includes the same four communication layers. These four communication layers communicate with a man-machine interface called MMI ...

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Abstract

The invention is to be used in the Digital Video Broadcasting - Common Interface environment for accessing the Conditional Access Module (CAM). The host application handles objects of the Conditional Access (CA) through a private Application Program Interface (API). Each CAM may have its own private CA API. This new mode coexists with the two already defined modes: low level Man Machine Interface, and high level Man Machine Interface. It is possible to provide a method and an apparatus for allotting Conditional Access features to STU. Furthermore, this access to the Conditional Access Module is direct without imposing a predefined content of the communications exchange.

Description

technical field [0001] The present invention relates to digital video broadcasting systems (DVB), and more particularly to methods and devices for extending the functionality of digital video broadcasting-common interface (DVB-CI) through direct access to conditional access components. Background technique [0002] The background to the invention is Digital Video Broadcasting (DVB), the specific details of which are specified in the "Standard". For example, reference may be made to the European Telecommunications Standards Institute (ETSI) EN 300 468-v1.3.1 (1997-09) section on digital video broadcasting. [0003] DVB-Common Interface for conditional access and other DVB applications is one of several user hardware interfaces specified by DVB. It is designed to bring the full benefits of open standards to suppliers of digital receiving equipment, while also enabling conditional access and security aspects of digital television receiving systems to retain proprietary rights....

Claims

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Application Information

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IPC IPC(8): G06F21/10G06F21/62H04N5/00H04N7/20
CPCH04N21/43607H04N21/4431H04N7/20
Inventor 菲利普·勒泰利耶埃里克·迪尔斯特凡娜·莫尔塞
Owner THOMSON MULTIMEDIA SA