A COMMON CONDITIONAL ACCESS INTERFACE FOR DIGITAL VIDEO BROADCASTING DECODERS

V. Lenoir, J. Giachetti, A. Codet, D. Cutts, J. Sager
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引用次数: 21

Abstract

A set of standards has been designed by the Digital Video Broadcasting (DVB) project in Europe for the broadcasting of digital television services on satellite, cable, MMDS and terrestrial networks. These standards are based on the ISO MPEG 2 specifications and include source coding, channel coding, modulation, service information and interfaces for consumer decoders. A conditional access system is used when there is a need to control the access to a broadcast service, mainly for commercial reasons. It has been decided not to standardize the conditional access (CA) system, but only the mechanisms for interoperation of different CA systems on DVB decoders. Mechanisms had to be found in order to allow the reception of DVB programmes using different CA systems with a single decoder. The DVB common interface described in the paper has first been specified for that purpose. Decoder manufacturers will provide DVB decoders with the DVB common interface and CA system providers will provide detachable CA modules. This solution allows broadcasters to use modules containing solutions from different suppliers in the same broadcast system, thus increasing their choice and anti-piracy options. >
用于数字视频广播解码器的通用条件访问接口
欧洲的数字视频广播(DVB)项目设计了一套标准,用于在卫星、有线、MMDS和地面网络上播放数字电视服务。这些标准基于ISO MPEG 2规范,包括源编码、信道编码、调制、服务信息和消费者解码器接口。当需要控制对广播服务的访问时,主要出于商业原因,使用条件访问系统。对条件接入(CA)系统不进行标准化,只对不同条件接入系统在DVB解码器上的互操作机制进行标准化。必须找到一种机制,以便使用不同的CA系统和单个解码器接收DVB节目。本文中描述的DVB公共接口首先是为此目的指定的。解码器制造商将提供带有DVB通用接口的DVB解码器,CA系统供应商将提供可拆卸的CA模块。该解决方案允许广播公司在同一广播系统中使用包含来自不同供应商的解决方案的模块,从而增加了他们的选择和反盗版选项。>
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