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 an evaluation to ensure the person who is seeking access to content is authorized to access the content. Access is man ...

for

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

developed by Scientific Atlanta. 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 diversified information and media private company Bloomberg L.P. It is distributed globally, re ...

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 that is best known for its ongoing reality television shows and promotion of pseudoscience. It init ...

, AFRTS,

ABS-CBN ABS-CBN is a leading Philippine media and content company. It serves as the flagship media brand of ABS-CBN Corporation, a subsidiary of Lopez Holdings Corporation. Once the country's largest free-to-air television network, ABS-CBN has since ...

GMA Network GMA Network (an acronym of its legal name, Global Media Arts and commonly known as GMA) is a Television in the Philippines, Philippine commercial broadcast network, serving as the flagship property of publicly traded GMA Network (company), ...

, and

American Forces Network The American Forces Network (AFN) is a government television and radio broadcast service the United States Armed Forces provides to soldiers stationed or assigned overseas, and is headquartered at Fort Meade in Maryland. AFN comprises two sub ...

. 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

See also

References