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XHTV-TV
XHTV-TDT (virtual channel 4), founded in 1950 by Romulo O'Farril, is a flagship TV station of Televisa and carries its FORO news network. FOROtv is available on various cable television companies and SKY México satellite service, along with several providers in the United States as part of Televisa and Univision's partnership (albeit with local programming and sports replaced with American ads and recorded news blocks). It is the oldest TV station in Mexico and Latin America. History XHTV was Mexico's first television station and one of the building blocks of Telesistema Mexicano, which became Televisa in 1972. In 2001, XHTV began using the name 4TV with a program lineup targeted at the Mexico City area and the slogan "El Canal de la Ciudad" (The City Channel). On August 30, 2010 (sixty years after the channel was founded), the channel's name was changed to FOROtv (literally "Forum TV"), with most of Televisa's news programs moved here, such as '' Las Noticias por Adela'' (fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telesistema Mexicano
Telesistema Mexicano was the predecessor of Televisa. Telesistema Mexicano was a television alliance made up of the independently owned television flagship stations XEW Canal 2, XHTV Canal 4, and XHGC Canal 5 in Mexico, Distrito Federal. History Telesistema Mexicano was founded in 1955 when Mexico, Distrito Federal television stations XEW Canal 2 owned by Emilio Azcárraga Vidaurreta, XHTV Canal 4 owned by Rómulo O'Farrill, XHGC Canal 5 owned by Guillermo González Camarena, and capital and expertise from Ernesto Barrientos Ventosa merged to form an alliance. In 1968 Monterrey businessmen established Televisión Independiente de México XHTM Canal 8 in Mexico, Distrito Federal to compete with Telesistema Mexico but later ended up being merged with their competitor in 1973. This last merger between Telesistema de Mexico and Televisión Independiente de México led to the creation of Television Via Satellite (Televisa Grupo Televisa is a Mexican multimedia mass media compa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Televisa
Grupo Televisa is a Mexican multimedia mass media company. A major Latin American mass media corporation, it often presents itself as the largest producer of Spanish-language content. In April 2021, Televisa and Univision Communications announced that they had proposed a merger between Televisa's media and entertainment assets with Univision, which would form a new company to be known as TelevisaUnivision. The transaction was completed on January 31, 2022, with Televisa owning a 45% stake of the company. Company History Since its beginning, the company has been owned by the Azcárraga family. The company has been led and owned by three generations of Azcárraga; each has marked an era for the company and, until October 2017, each had passed the ownership of the company to his son upon his death. Emilio Azcárraga Vidaurreta (1955–1972) Grupo Televisa was founded in 1955 as Telesistema Mexicano, linking Mexico's first three television stations: XHTV-TV (founded in 1950), XEW- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra High Frequency
Ultra high frequency (UHF) is the ITU designation for radio frequency, radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (one decimeter). Radio waves with frequencies above the UHF band fall into the super-high frequency (SHF) or microwave frequency range. Lower frequency signals fall into the VHF (very high frequency) or lower bands. UHF radio waves propagate mainly by Line-of-sight propagation, line of sight; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for UHF television broadcasting, television broadcasting, cell phones, satellite communication including GPS, personal radio services including Wi-Fi and Bluetooth, walkie-talkies, cordless phones, satellite phones, and numerous other applications. The Institute of Electrical and Electronics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XHTVM-TDT
XHTVM-TDT (virtual channel 40) is a television station in Mexico City, owned by Televisora del Valle de México and operated by TV Azteca. It is branded as ''adn40'' and available over the air in much of Mexico on TV Azteca's transmitters. Programming generally consists of news and informational shows. History Concession, sign-on and early years On June 28, 1991, the Diario Oficial de la Federación announced that channel 40 in Mexico City was open to be an independent commercial television station. The new station would have its transmitter located on Cerro del Chiquihuite, and it would have an effective radiated power of 5,000 kW; a callsign of XHEXI-TV, never to be used on air, was also assigned at this time. The availability of a new television station in Mexico City, for the first time in decades, attracted high-powered media companies aspiring to enter the television business. Of 18 total applicants, 10 qualified for the concession for the new television station. Among ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XHTV ForoTV 2010
XHTV-TDT (virtual channel 4), founded in 1950 by Romulo O'Farril, is a flagship TV station of Televisa and carries its Foro (TV channel), FORO news network. FOROtv is available on various cable television companies and SKY México satellite service, along with several providers in the United States as part of Televisa and Univision's partnership (albeit with local programming and sports replaced with American ads and recorded news blocks). It is the oldest TV station in Mexico and Latin America. History XHTV was Mexico's first television station and one of the building blocks of Telesistema Mexicano, which became Televisa in 1972. In 2001, XHTV began using the name 4TV with a program lineup targeted at the Mexico City area and the slogan "El Canal de la Ciudad" (The City Channel). On August 30, 2010 (sixty years after the channel was founded), the channel's name was changed to FOROtv (literally "Forum TV"), with most of Televisa's news programs moved here, such as ''Las Notici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Channel
In most telecommunications organizations, a virtual channel is a method of remapping the ''program number'' as used in H.222 Program Association Tables and Program Mapping Tables to a channel number that can be entered via digits on a receiver's remote control. Often, "virtual channels" are implemented in digital television, helping users to find a desired channel easily, or easing the transition from analogue to digital broadcasting in general. The practice of assigning virtual channels is most common in those parts of the world where TV stations were colloquially named after the RF channel they were transmitting on ("Channel 6 Springfield"), as it was common in North America during the analogue TV era. In other parts of the world, such as Europe, virtual channels are rarely used or needed, as TV stations there identify themselves by name, not by RF channel or callsign. A "virtual channel" was first used for DigiCipher 2 in North America. It was later used and referred to as a l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Program And System Information Protocol
The Program and System Information Protocol (PSIP) is the MPEG (a video and audio industry group) and privately defined program-specific information originally defined by General Instrument for the DigiCipher 2 system and later extended for the ATSC digital television system for carrying metadata about each channel in the broadcast MPEG transport stream of a television station and for publishing information about television programs so that viewers can select what to watch by title and description. Its FM radio equivalent is Radio Data System (RDS). Function PSIP defines virtual channels and content ratings, as well as electronic program guides with titles and (optionally) descriptions to be decoded and displayed by the ATSC tuner. PSIP can also send: * the exact time referenced to UTC and GPS time; * the short name, which some stations use to publish their callsign. A maximum of seven characters can be used in a short name. PSIP is defined in ATSC standard A/65, the most rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Very High Frequency
Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves ( radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter. Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra high frequency (UHF). VHF radio waves propagate mainly by line-of-sight, so they are blocked by hills and mountains, although due to refraction they can travel somewhat beyond the visual horizon out to about 160 km (100 miles). Common uses for radio waves in the VHF band are Digital Audio Broadcasting (DAB) and FM radio broadcasting, television broadcasting, two-way land mobile radio systems (emergency, business, private use and military), long range data communication up to several tens of kilometers with radio modems, amateur radio, and marine communications. Air traffic control communications and air navigation systems (e.g. VOR and ILS) wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
480i
480i is the video mode used for standard-definition digital television in the Caribbean, Japan, South Korea, Taiwan, Philippines, Laos, Western Sahara, and most of the Americas (with the exception of Argentina, Paraguay, and Uruguay). The ''480'' identifies a vertical resolution of 480 lines, and the ''i'' identifies it as an interlaced resolution. The field rate, which is 60 Hz (or 59.94 Hz when used with NTSC color), is sometimes included when identifying the video mode, i.e. 480i60; another notation, endorsed by both the International Telecommunication Union in BT.601 and SMPTE in SMPTE 259M, includes the frame rate, as in 480i/30. The other common standard definition digital standard, used in the rest of the world, is 576i. It originated from the need for a standard to digitize analog TV (defined in BT.601) and is now used for digital TV broadcasts and home appliances such as game consoles and DVD disc players. Although related, it should not be confused with the an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1080i
1080i (also known as Full HD or BT.709) is a combination of frame resolution and scan type. 1080i is used in high-definition television (HDTV) and high-definition video. The number "1080" refers to the number of horizontal lines on the screen. The "i" is an abbreviation for "interlaced"; this indicates that only the even lines, then the odd lines of each frame (each image called a video field) are drawn alternately, so that only half the number of actual image frames are used to produce video. A related display resolution is 1080p, which also has 1080 lines of resolution; the "p" refers to progressive scan, which indicates that the lines of resolution for each frame are "drawn" on the screen in sequence. The term assumes a widescreen aspect ratio of 16:9 (a rectangular TV that is wider than it is tall), so the 1080 lines of vertical resolution implies 1920 columns of horizontal resolution, or 1920 pixels × 1080 lines. A 1920 pixels × 1080 lines screen has a total of 2.1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspect Ratio (image)
The aspect ratio of an image is the ratio of its width to its height, and is expressed with two numbers separated by a colon, such as ''16:9'', sixteen-to-nine. For the ''x'':''y'' aspect ratio, the image is ''x'' units wide and ''y'' units high. Common aspect ratios are 1.85:1 and 2.39:1 in cinematography, 4:3 and 16:9 in television photography, and 3:2 in still photography. Some common examples The common film aspect ratios used in cinemas are 1.85:1 and 2.39:1.The 2.39:1 ratio is commonly labeled 2.40:1, e.g., in the American Society of Cinematographers' ''American Cinematographer Manual'' (Many widescreen films before the 1970 SMPTE revision used 2.35:1). Two common videographic aspect ratios are 4:3 (1.:1), the universal video format of the 20th century, and 16:9 (1.:1), universal for high-definition television and European digital television. Other cinema and video aspect ratios exist, but are used infrequently. In still camera photography, the most common aspect ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Display Resolution
The display resolution or display modes of a digital television, computer monitor or display device is the number of distinct pixels in each dimension that can be displayed. It can be an ambiguous term especially as the displayed resolution is controlled by different factors in cathode ray tube (CRT) displays, flat-panel displays (including liquid-crystal displays) and projection displays using fixed picture-element (pixel) arrays. It is usually quoted as ', with the units in pixels: for example, ' means the width is 1024 pixels and the height is 768 pixels. This example would normally be spoken as "ten twenty-four by seven sixty-eight" or "ten twenty-four by seven six eight". One use of the term ''display resolution'' applies to fixed-pixel-array displays such as plasma display panels (PDP), liquid-crystal displays (LCD), Digital Light Processing (DLP) projectors, OLED displays, and similar technologies, and is simply the physical number of columns and rows of pixels creating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
