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PowerVu
PowerVu is a conditional access system for digital television developed by Scientific Atlanta. It is used for professional broadcasting, notably by Retevision, Bloomberg Television, Discovery Channel, AFRTS, ABS-CBN, GMA Network, 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 i .... 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 content. Said another way, conditional access is a type of access management. Access is managed is by requiring certain criteria to be met before granting access to the content. In software Conditional access is a function that lets you manage people’s access to the software in question, such as email, applications, and documents. It is usually offered as SaaS (Software-as-a-Service) and deployed in organizations to keep company data safe. By setting conditions on the access to this data, the organization has more control over who accesses the data and where and in what way the information is accessed. When setting up conditional access, access can be limited to or prevented based on the policy defined by the system administrator. For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 include global radio and television satellite feeds, emanate from the AFN Broadcast Center/Defense Media Center in Riverside, California. AFN was founded on 26 May 1942, in London as the Armed Forces Radio Service (AFRS). History The American Forces Network can trace its origins to 26 May 1942, when the War Department established the Armed Forces Radio Service (AFRS). A television service was first introduced in 1954 with a pilot station at Limestone Air Force Base, Maine. In 1954, the television mission of AFRS was officially recognized and AFRS (Armed Forces Radio Service) became AFRTS (Armed Forces Radio and Television Service). All of the Armed Forces broadcasting affiliates worldwide merged under the AFN banner on 1 January 1998. On 21 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 include global radio and television satellite feeds, emanate from the AFN Broadcast Center/Defense Media Center in Riverside, California. AFN was founded on 26 May 1942, in London as the Armed Forces Radio Service (AFRS). History The American Forces Network can trace its origins to 26 May 1942, when the War Department established the Armed Forces Radio Service (AFRS). A television service was first introduced in 1954 with a pilot station at Limestone Air Force Base, Maine. In 1954, the television mission of AFRS was officially recognized and AFRS (Armed Forces Radio Service) became AFRTS (Armed Forces Radio and Television Service). All of the Armed Forces broadcasting affiliates worldwide merged under the AFN banner on 1 January 1998. On 21 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 advancement and represented the first significant evolution in television technology since color television in the 1950s. Modern digital television is transmitted in high-definition television (HDTV) with greater resolution than analog TV. It typically uses a widescreen aspect ratio (commonly 16:9) in contrast to the narrower format of analog TV. It makes more economical use of scarce radio spectrum space; it can transmit up to seven channels in the same bandwidth as a single analog channel, and provides many new features that analog television cannot. A transition from analog to digital broadcasting began around 2000. Different digital television broadcasting standards have been adopted in different parts of the world; below are the more widel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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, and was purchased by Cisco Systems in 2005 for $6.9 billion after Cisco received antitrust clearance for the purchase. The Cisco acquisition of Scientific Atlanta was ranked in the top 10 of largest technology acquisitions in history and was Cisco's largest acquisition to date. Prior to the purchase, Scientific Atlanta had been a Fortune 500 company and was one of the top 25 largest corporations in Georgia. Scientific Atlanta was considered by many to be "the patriarch of Atlanta's technology industry for nearly six decades" and is sometimes referred to as "Atlanta's Microsoft or Hewlett Packard". Products Scientific Atlanta was a supplier of transmission networks for broadband access to the home, set-top cable boxes, cable modems and digit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 headquartered in New York City, with European headquarters in London and Asian headquarters in Hong Kong. History Bloomberg Television first launched in the United States in mid-1994 under the name Bloomberg Direct and was first carried on the then new satellite television service DirecTV. Within a year it was renamed Bloomberg Information TV, before it was shortened to its current name in 1998. The network has taken over the channel space of the-defunct Financial News Network, as well as hiring most of the former FNN workforce. Shortly after Bloomberg's launch, the now-defunct American Independent Network carried a simulcast of the channel at various times each weekday from 1995 to 1997, which was picked up by some broadcast stations in early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Channel was the third most widely distributed subscription channel in the United States, behind now-sibling channel TBS and The Weather Channel; it is available in 409 million households worldwide, through its U.S. flagship channel and its various owned or licensed television channels internationally. It initially provided documentary television programming focused primarily on popular science, technology, and history, but by the 2010s had expanded into reality television and pseudo-scientific entertainment. , Discovery Channel is available to approximately 88,589,000 pay television households in the United States. History John Hendricks founded the channel and its parent company, Cable Educational Network Inc., in 1982. Several investo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ABS-CBN Corporation
ABS-CBN Corporation is a Filipino media company based in Quezon City, Metro Manila, Philippines. It is the largest entertainment and media conglomerate in the Philippines. It is a subsidiary of Lopez Holdings Corporation which is owned by the López family ABS-CBN was formed by the merger of Alto Broadcasting System (ABS) and Chronicle Broadcasting Network (CBN). ABS was founded in 1946 by American electronics engineer James Lindenberg as Bolinao Electronics Corporation (BEC). In 1952, BEC was renamed Alto Broadcasting System (ABS) with its corporate name, Alto Sales Corporation after Judge Antonio Quirino, brother of President Elpidio Quirino, purchased the company and later launched the first TV station in the country, DZAQ-TV on October 23, 1953. The company that would later be merged with ABS to form ABS-CBN was founded in 1956 as Chronicle Broadcasting Network, Inc. (CBN) by Eugenio Lopez Sr. and his brother Fernando Lopez, who was the sitting Vice President of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 (formerly known as Republic Broadcasting System, GMA Radio-Television Arts and GMA Rainbow Satellite Network) is commonly referred to as the Kapuso Network in reference to the outline of the company's logo. It is headquartered in the GMA Network Center in Quezon City and its transmitter, Tower of Power, is located at Tandang Sora Avenue, Barangay Culiat also in Quezon City with regional stations and offices strategically located in over 9 major cities across the country. The original meaning of the GMA acronym was Greater Manila Area, referring to the initial coverage area of the station. As the network expanded it changed into Global Media Arts. The flagship television station of GMA is DZBB-TV (GMA-7 Manila) which carries VHF Channel 7 (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcast Engineering
Broadcast engineering is the field of electrical engineering, and now to some extent computer engineering and information technology, which deals with radio and television broadcasting. Audio engineering and RF engineering are also essential parts of broadcast engineering, being their own subsets of electrical engineering. Broadcast engineering involves both the Television studio, studio and transmitter aspects (the entire airchain), as well as remote broadcasts. Every Broadcast network, station has a broadcast engineer, though one may now serve an entire station group in a city. In small media markets the engineer may work on a contract basis for one or more stations as needed. Duties Modern duties of a broadcast engineer include maintaining broadcast automation systems for the studio and automatic transmission systems for the transmitter physical plant, plant. There are also important duties regarding Radio masts and towers, radio towers, which must be Preventive maintenanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
