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    • 44. 发明公开
    • Method and apparatus for enlarging DVB-CI functionality by enabling a direct access to the Conditional Access Module
    • 通过启用到条件访问模块直接访问方法和用于增强的DVB-CI的功能装置
    • EP0964573A1
    • 1999-12-15
    • EP98401425.8
    • 1998-06-11
    • THOMSON multimedia
    • Diehl, EricLetellier, PhilippeMorcel, Stéphane
    • H04N5/00H04N7/16
    • H04N21/43607H04N21/4431
    • 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 but the data channel remains identical whatever the CAM is. This new mode coexists with the two already defined modes: low level Man Machine Interface, and high level Man Machine Interface.
      If a Set Top Unit 〈〈 understands 〉〉 the private CA Application Program Interface (API), then it may access the features of the plugged CA through its private CA API Protocol. Otherwise, it remains on the standard API.
      With this extension, a STU can have a Conditional Access User Interface which perfectly fits into the overall User Interface of the STU. Thus, a broadcaster can ensure that its look and feel are respected on its STUs. A manufacturer can build a STU especially optimized for a given CA or a plurality of CAs but still able to run other CAs.
      Therefore, owing this technique, it is possible to provide a method and an apparatus for allotting Conditional Access features to STU as if the CA modules were transparent. Furthermore, this access to the Conditional Access Module is direct in addition to the standardized access by defining a protocol of communications with a predetermined format without imposing a predefined content of the communications exchange.
    • 本发明是在数字视频广播中使用 - 公用接口环境用于访问条件访问模块(CAM)。 主机应用程序处理通过专用应用程序接口(API)的条件接收(CA)的对象。 每个CAM可以有它自己的私有CA API,但数据通道保持一致无论CAM是。 低水平的人机界面,和高层次的人机界面:这种新的模式与两个已经定义模式并存。 如果机顶盒单元和郎朗&&&了解到&GT &&响和私有CA应用程序接口(API),那么它可以通过其私有CA API协议访问插入CA的功能。 否则,它仍然在标准的API。 有了这个扩展,屋顶盒可以有一个条件接收的用户界面,完美地融入了STU的整体用户界面。 因此,广播可以确保没有它的外观和手感都在它的屋顶盒尊重。 制造商可以建立一个STU的爱情尤其是对于一个给定的CA或CA的多元化,但仍然能够运行其他CA优化。 因此,由于该技术中,有可能提供一种用于透明地一种方法和装置,以配发条件接收功能,以STU仿佛CA模块当中。 进一步,这个访问条件访问模块是直接在除了由限定具有预定格式的通信的协议,而不强加所述通信交换的预定内容的标准化访问。