PowerVu is a

conditional access system Conditional access (CA) is a term commonly used in relation to software and to digital television systems. Conditional access is that ‘just-in-time’ evaluation to ensure the person who is seeking access to content is authorized to access the c ...

for

digital television Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative adva ...

developed by

Scientific Atlanta Scientific Atlanta, Inc. was a Georgia, United States-based manufacturer of cable television, telecommunications, and broadband equipment. Scientific Atlanta was founded in 1951 by a group of engineers from the Georgia Institute of Technology, a ...

. It is used for professional broadcasting, notably by Retevision,

Bloomberg Television Bloomberg Television (on-air as Bloomberg) is an American-based pay television network focusing on business and capital market programming, owned by Bloomberg L.P. It is distributed globally, reaching over 310 million homes worldwide. It is hea ...

Discovery Channel Discovery Channel (known as The Discovery Channel from 1985 to 1995, and often referred to as simply Discovery) is an American cable channel owned by Warner Bros. Discovery, a publicly traded company run by CEO David Zaslav. , Discovery Chan ...

AFRTS The American Forces Network (AFN) is a government television and radio broadcast service the U.S. military provides to those stationed or assigned overseas. Headquartered at Fort George G. Meade, Maryland, AFN's broadcast operations, which i ...

ABS-CBN ABS-CBN (an initialism of its two predecessors' names, Alto Broadcasting System and Chronicle Broadcasting Network) is a Philippine commercial broadcast network that serves as the flagship property of ABS-CBN Corporation, a company unde ...

GMA Network GMA Network (Global Media Arts or simply GMA) is a Philippine free-to-air television and radio network. It is the flagship property of publicly traded GMA Network, Inc. Its first broadcast on television was on October 29, 1961. GMA Network (f ...

, and

American Forces Network The American Forces Network (AFN) is a government television and radio broadcast service the U.S. military provides to those stationed or assigned overseas. Headquartered at Fort George G. Meade, Maryland, AFN's broadcast operations, which ...

. It is also used by cable companies to prevent viewing by unauthorized viewers and non-cable subscribers. 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.

References

Broadcast engineering Digital television Conditional-access television broadcasting {{tech-stub