上海 闵行有线原南瓜加密系统消失,高清电影CHC HD如何解?
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上海 闵行有线原南瓜加密系统消失,高清电影CHC HD如何解?




只剩两套 科学亚特兰大 (PowerVu 是思科公司的) 和 恩迪斯公司NDS  的CA

上海漕河泾 有一家 公司,就是这个 科学亚特兰大,我还去过他们的实验室,全是测试Cable 的视频传输的系统


The company started out as News Datacom (NDC ) in 1989, and later changed its name to News Digital Systems. Since 1995, NDS has developed pay television solutions for digital broadcasters. [1] NDS maintains its headquarters in Jerusalem's Har Hotzvim high-tech industrial park. Its 800 employees, originally working in four separate rental buildings, moved to a large, new building in 2004.[2]
[edit]Management and operations
As of September 2010, more than 138 million active CA and DRM devices use Videoguard. NDS also makes the XTV PVR–DVR, which has been cumulatively deployed in more than 33 million set-top boxes. XTV is more commonly identifiable under the names Sky+ (in BSkyB) and DirecTV+ (in DirecTV). NDS has deployed or activated more than 163 million set-top boxes with its MediaHighway middleware.
NDS also supplies interactive TV applications, platforms, and development tools. NDS has over 5700 employees, with offices in the UK, Israel, India, United States,Spain, Germany, Brazil, Russia, Singapore, France, Denmark, South Korea, China, Hong Kong and Australia.
Leading customers include DirecTV (in the USA), BSkyB, Sky Italia, Sky Deutschland, SKY Latin America, SKY Network Television (in New Zealand), Viasat (inSweden, Norway & Denmark), TotalTV, Foxtel (in Australia), China Central Television (CCTV), Yes and Hot (in Israel), SkyLife, CanalSat (in France), Astro (in Malaysia),Cablevision (in the USA), Tata Sky, Airtel, Hathway, Telecom Italia and Den (in India).
NDS owns Jungo, which provides software for residential gateways and CastUp Inc, a rich media producer, publisher and distributor.


PowerVu is a conditional access system for digital television developed by Scientific Atlanta[1]. It is used for professional broadcasting, notably by Retevision, Bloomberg Television, Discovery Channel, AFRTS andAmerican Forces Network. It is also used by cable companies to prevent viewing by unauthorized viewers.PowerVu has decoders that decode signals from certain satellites for cable distribution services. These decoders can also be used just like the FTA (Free-To-Air) satellite receivers if properly configured. PowerVu was considered very secure since it uses a complicated system to authorize each PowerVu receiver and trace its history of ownership and usage[citation needed]. Most PowerVu users are professional cable or satellite companies, using the service and equipment for signal redistribution, because regular users cannot afford it.On March 10, 2010 the hacker called "Colibri" published after previous work done in 2005[2] a cryptanalysis of a PowerVU system implementation, describing a flawed design that can be used to gain access to the encryption keys and ultimately decryption of the transmitted content.[3]

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