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ITFS
The Educational Broadband Service (EBS) was formerly known as the Instructional Television Fixed Service (ITFS). ITFS was a band of twenty (20) microwave TV channels available to be licensed by the U.S. Federal Communications Commission (FCC) to local credit granting educational institutions. It was designed to serve as a means for educational institutions to deliver live or pre-recorded Instructional television to multiple sites within school districts and to higher education branch campuses. In recognition of the variety and quantity of video materials required to support instruction at numerous grade levels and in a range of subjects, licensees were typically granted a group of four channels. Its low capital and operating costs as compared to broadcast television, technical quality that compared favorably with broadcast television, and its multi-channel per licensees feature made ITFS an extremely cost effective vehicle for the delivery of Educational television materials. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clearwire
Clearwire Corporation (stylized as clearw˙re) was a telecommunications operator which provided mobile and fixed wireless broadband communications services to retail and wholesale customers in the United States, Belgium, Republic of Ireland, Ireland and Spain. Clearwire traces its roots to 1998, when Sierra Technologies, Inc., spun off certain assets to form a new company, Clearwire Technologies Inc. In October 2003, Craig McCaw purchased Clearwire Technologies, Inc. parent company Clearwire Holdings and moved the company headquarters to Kirkland, Washington. In 2012, Clearwire moved the company headquarters to Bellevue, Washington. A large percentage of Clearwire shares were previously owned by a number of large companies, including Sprint Nextel Corporation (later Sprint Corporation, which later merged with T-Mobile US), Comcast Corporation, Time Warner Cable Inc., Bright House Networks, Bright House Networks, LLC, Google Inc. and Intel Corporation. Sprint Nextel was Clearwir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instructional Television
Instructional television (ITV) is the use of television programs for distance education. Educational television programs on instructional television may be less than one half hour long (generally 15 minutes in length) to help their integration into the classroom setting. These shows are often accompanied by teachers' guides that include material to help use this program in lessons. Instructional television programs in the United States have historically been shown during the daytime on Public Broadcasting Service (PBS) stations. However, in the 21st century fewer public television stations devote their airtime to ITV than in the past, ITV programs are either seen on a digital subchannel of non-commercial educational public television station, or on a local educational-access television channel run by a public, educational, and government access (PEG) cable TV organization. Instructional television in the United States has been granted 20 microwave channels, administered by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CatholicTV
The CatholicTV Network, commonly known as CatholicTV, is a Catholic television network based in Watertown, Massachusetts. CatholicTV first launched locally in Boston in 1955, making it the oldest Catholic television network in the United States. Today, it is distributed on cable television systems, internet television, and terrestrial television, broadcast stations in sixteen U.S. states and the U.S. Virgin Islands and now worldwide. CatholicTV broadcasts programming relevant to Catholic viewers, including live Catholic liturgy, religious services, talk shows, devotional programs, educational series, entertainment, and children's programs. The network regularly presents coverage of liturgies and special events at the Vatican City, Vatican and during Papal travel, papal journeys. As of 2016, the president of the CatholicTV Network is Bishop Robert P. Reed. History The first program of the Catholic Television Center of the Roman Catholic Archdiocese of Boston, Archdiocese of Bost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Band (radio)
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication. To prevent interference between different users, the generation and transmission of radio waves is strictly regulated by national laws, coordinated by an international body, the International Telecommunication Union (ITU). Different parts of the radio spectrum are allocated by the ITU for different radio transmission technologies and applications; some 40 radiocommunication services are defined in the ITU's Radio Regulations (RR). In some cases, parts of the radio spectrum are sold or licensed to operators of private radio transmission services (for example, cellular telephone operators or broadcast television stations). Ranges of allocated frequencies are often referred to by their provisioned use (for example, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pay-TV
Pay television, also known as subscription television, premium television or, when referring to an individual service, a premium channel, refers to subscription-based television services, usually provided by multichannel television providers, but also increasingly via digital terrestrial and streaming television. In the United States, subscription television began in the late 1970s and early 1980s in the form of encrypted analog over-the-air broadcast television which could be decrypted with special equipment. The concept rapidly expanded through the multi-channel transition and into the post-network era. Other parts of the world beyond the United States, such as France and Latin America have also offered encrypted analog terrestrial signals available for subscription. The term is most synonymous with premium entertainment services focused on films or general entertainment programming such as, in the United States, Cinemax, HBO, MGM+, Showtime, and Starz, but such services ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craig McCaw
Craig McCaw (born August 11, 1949) is an American businessman and entrepreneur, a pioneer in the cellular phone industry. He is the founder of McCaw Cellular (now part of AT&T Mobility) and Clearwire Corporation (now part of T-Mobile via the Sprint acquisition). Early life and cable TV beginnings McCaw is the second of four sons of Marion and J. Elroy McCaw. As a child, the family lived in the posh gated Highlands community north of Seattle, and McCaw attended Seattle's private Lakeside School, where he was later given a Lakeside Distinguished Alumni Award. McCaw's father was a broadcasting magnate and owner of Gotham Broadcasting Corporation. Gotham owned the New York City radio station WINS, which became one of the first stations to play rock and roll, with Alan Freed being one of the earliest famous disc jockeys on the station. McCaw's father was in the business of buying and selling TV and radio stations, which brought in wealth but also incurred significant debts. Elroy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Internet Service Provider
A wireless Internet service provider (WISP) is an Internet service provider with a network based on wireless networking. Technology may include commonplace Wi-Fi wireless mesh networking, or proprietary equipment designed to operate over open 900 MHz, 2.4 GHz, 4.9, 5, 24, and 60 GHz bands or licensed frequencies in the UHF band (including the MMDS frequency band), LMDS, and other bands from 6 GHz to 80 GHz. In the US, the Federal Communications Commission (FCC) released a Report and Order, FCC 05-56 in 2005 that revised the FCC’s rules to open the 3650 MHz band for terrestrial wireless broadband operations. On November 14, 2007 the Commission released a Public Notice (DA 07-4605) in which the Wireless Telecommunications Bureau announced the start date for the licensing and registration process for the 3650-3700 MHz band. As of July 2015, over 2,000 fixed wireless broadband providers operate in the US, servicing nearly 4 million customers. Hist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wired (magazine)
''Wired'' is a bi-monthly American magazine that focuses on how emerging technologies affect culture, the economy, and politics. It is published in both print and Online magazine, online editions by Condé Nast. The magazine has been in publication since its launch in January 1993. Its editorial office is based in San Francisco, California, with its business headquarters located in New York City. ''Wired'' quickly became recognized as the voice of the emerging digital economy and culture and a pace setter in print design and web design. From 1998 until 2006, the magazine and its website, ''Wired.com'', experienced separate ownership before being fully consolidated under Condé Nast in 2006. It has won multiple National Magazine Awards and has been credited with shaping discourse around the digital revolution. The magazine also coined the term Crowdsourcing, ''crowdsourcing'', as well as its annual tradition of handing out Vaporware Awards. ''Wired'' has launched several in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Broadband
Wireless broadband is a telecommunications technology that provides high-speed wireless Internet access or computer networking access over a wide area. The term encompasses both fixed and mobile broadband. The term broadband Originally the word "broadband" had a technical meaning, but became a marketing term for any kind of relatively high-speed computer network or Internet access technology. According to the 802.16-2004 standard, broadband means "having instantaneous bandwidths greater than 1 MHz and supporting data rates greater than about 1.5 Mbit/s." The Federal Communications Commission (FCC) recently re-defined the word to mean download speeds of at least 25 Mbit/s and upload speeds of at least 3 Mbit/s. Technology and speeds A wireless broadband network is an outdoor fixed and/or mobile wireless network providing point-to-multipoint or point-to-point terrestrial wireless links for broadband services. Wireless networks can feature data rates exceeding 1 Gbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Communications Association
Wireless communication (or just wireless, when the context allows) is the transfer of information (''telecommunication'') between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves. With radio waves, intended distances can be short, such as a few meters for Bluetooth, or as far as millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio ''wireless technology'' include GPS units, garage door openers, wireless computer mouse, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones. Somewhat less common methods of achieving wireless communications involve other e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-line-of-sight
Non-line-of-sight (NLOS) radio propagation occurs outside of the typical line-of-sight (LOS) between the transmitter and receiver, such as in ground reflections. Near-line-of-sight (also NLOS) conditions refer to partial obstruction by a physical object present in the innermost Fresnel zone. Obstacles that commonly cause NLOS propagation include buildings, trees, hills, mountains, and, in some cases, high voltage electric power lines. Some of these obstructions reflect certain radio frequencies, while some simply absorb or garble the signals; but, in either case, they limit the use of many types of radio transmissions, especially when low on power budget. Lower power levels at a receiver reduce the chance of successfully receiving a transmission. Low levels can be caused by at least three basic reasons: low transmit level, for example Wi-Fi power levels; far-away transmitter, such as 3G more than away or TV more than away; and obstruction between the transmitter and the re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Compression
In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating Redundancy (information theory), statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an encoder, and one that performs the reversal of the process (decompression) as a decoder. The process of reducing the size of a data file is often referred to as data compression. In the context of data transmission, it is called source coding: encoding is done at the source of the data before it is stored or transmitted. Source coding should not be confused with channel coding, for error detection and correction or line coding, the means ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
