152-957: The TV Land Awards was an American television awards ceremony that generally commemorated shows now off the air, rather than in current production as with the Emmys . Created by Executive Producer Michael Levitt , the awards were hosted and broadcast by the TV Land network from 2003–2012 and then returned to the air in 2015 and 2016. No TV Land awards show was scheduled for the spring of 2017. Awards are given in various categories (which change slightly from year to year) and originally included awards voted on by visitors to TV Land's website; they are given to both individual actors/actresses and to entire television series . The TV Land Award statuettes are made by New York firm, Society Awards . In March 2013, TV Land announced that there would be no TV Land Awards for that year. A network spokesman said, "We love
304-414: A digital television (DTV) signal remains good until the signal level drops below a threshold where reception is no longer possible or becomes intermittent. Analog television may be wireless ( terrestrial television and satellite television ) or can be distributed over a cable network as cable television . All broadcast television systems used analog signals before the arrival of DTV. Motivated by
456-545: A made-for-television film in its scheduled time slot due to a failure in communications between network executives.) Local newscasts or syndicated programs fill the "prime access" hour or half-hour (7:00 to 8:00 p.m. in the Eastern and Pacific Time Zones , 6:30 to 7:00 p.m. in other areas), and lead into the networks' prime time schedules, which are the day's most-watched three hours of television. The traditional prime time schedule runs from 8:00 to 11:00 p.m. in
608-629: A streaming service – was shut down in December 2013 and replaced with a promotional website for Warner Bros. Television programs). The CW broadcasts fourteen hours a week of programming in prime time, all airing on Monday through Sundays (the network maintained a three-hour evening lineup on Sundays from 2006 to 2009, when that time was turned over to its affiliates; it reinstated Sunday prime time programming in October 2018), and three hours on Saturday mornings (its children's program block may bleed into
760-453: A base slate of programming to its member stations (which is limited to roughly thirteen hours a week of programming in prime time, airing on Sunday through Fridays with fewer programs on Thursday and Friday evenings, as well as daytime children's programming during the morning and afternoon), PBS does not schedule all programs it supplies in set time slots, giving its members leeway in scheduling these programs in time slots of their choosing. Like
912-519: A broader audience) in July 2005 and then as Ion Television in September 2007. The CW Television Network was created on September 18, 2006 when CBS Corporation and Time Warner decided to merge UPN and The WB, with The CW also drawing from the latter's broadcast and cable assets and scheduling model (The WB's online assets remained separate, although its former web domain – which was revamped as
1064-416: A cost-effective method that reduces programming responsibilities on prospective affiliate stations, fills airtime not occupied by CW network programming with syndicated programs and infomercials; The CW Plus is distributed via digital subchannel and cable-only affiliates, making it also one of the only networks that has local affiliates that do not broadcast over-the-air. MyNetworkTV originally started as
1216-600: A customer of a multichannel video programming distributor (also known as a cable or satellite "system" or "provider") can subscribe to for an additional monthly fee. The United States has a "decentralized", market-oriented television system, particularly in regard to broadcast television. The nation has a national public television service known as the Public Broadcasting Service ( PBS ). Local media markets have their own television stations, which may either be affiliated with or owned and operated by
1368-505: A decent portion of the non-government-subsidized income through public and private contributions. American public television stations air programming that commercial stations do not offer, such as educational (including cultural and arts) and public affairs programming . There are also a number of syndicators dealing exclusively or primarily with public broadcast stations, both PBS and independent public television stations (most prominently, American Public Television ). Additionally, there are
1520-709: A far smaller role in the United States than in most other countries. The federal government, through the National Aeronautics and Space Administration ( NASA ), does operate NASA TV (a service focusing on the U.S. space program with some educational programming) for public consumption, but only distributes that service via satellite and the Internet and not through terrestrial outlets; the United States Department of Defense produced
1672-671: A few local stations that have broadcast programming in American Sign Language , accompanied by English closed captioning . Prior to the development of closed captioning, it was not uncommon for some public television programs to incorporate ASL translations by an on-screen interpreter. An interpreter may still be used for the deaf and hard-of-hearing community for on-air emergency broadcasts (such as severe weather alerts given by local governments) as well as televised press conferences by local and state government officials accompanied by closed captioning. Public television has
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#17327879608341824-473: A form of public affairs program known as the Sunday morning talk shows (which maintain a "week-in-review" format that focuses primarily on political and socioeconomic issues, and if a particular program's format is more fluid in regards to topical content, other news stories of major interest). Both of these help fulfill stations' legal obligations, respectively to provide educational children's programs (through
1976-454: A full-time network including the four multicast services it distributes to its own stations and those owned by partner companies and other unaffiliated group owners) but each own over 150 stations, each covering over three-eighths of the country. In terms of number of stations, Nexstar and Sinclair run first and second, with third place held by Gray Television , whose 131 stations cover mostly smaller metropolitan areas reaching only 10% of
2128-627: A given bandwidth. This is because sophisticated comb filters in receivers are more effective with NTSC's 4 color frame sequence compared to PAL's 8-field sequence. However, in the end, the larger channel width of most PAL systems in Europe still gives PAL systems the edge in transmitting more picture detail. In the SECAM television system, U and V are transmitted on alternate lines, using simple frequency modulation of two different color subcarriers. In some analog color CRT displays, starting in 1956,
2280-464: A given signal completely, it is necessary to quote the color system plus the broadcast standard as a capital letter. For example, the United States, Canada, Mexico and South Korea used (or use) NTSC-M , Japan used NTSC-J , the UK used PAL-I , France used SECAM-L , much of Western Europe and Australia used (or use) PAL-B / G , most of Eastern Europe uses SECAM-D / K or PAL-D/K and so on. Not all of
2432-448: A la carte basis). Most conventional subscription television services offer a limited basic (or "lifeline") tier, a minimum base package that includes only broadcast stations within the television market where the service is located, and public, educational, and government access (PEG) cable channels; in many smaller markets, this tier may offer stations from adjacent markets that act as default network affiliates for areas not served by
2584-472: A law passed in 1990 known as the Children's Television Act , which requires stations to carry a minimum of three hours of programs featuring content benefiting the educational needs of youth each week) and public service programming. Sports and infomercials (and on some stations, syndicated feature film packages) can be found on weekend afternoons, followed again by the same type of prime-time shows aired during
2736-404: A license to operate. Over-the-air and free-to-air television do not necessitate any monthly payments, while cable, direct broadcast satellite (DBS), IPTV and virtual MVPD services require monthly payments that vary depending on the number of channels that a subscriber chooses to pay for in a particular package. Channels are usually sold in groups (known as "tiers"), rather than singularly (or on an
2888-477: A local affiliate of one or more of the major broadcast networks; however, since the digital television transition in the late 2000s, these have been replaced in some cases by digital subchannels that have agreed to provide a particular network's programming within the local market. Elevated programming tiers commonly start with an expanded basic package, offering a selection of subscription channels intended for wide distribution (primarily those that launched between
3040-469: A local morning news program; these are typically followed by a network morning program (such as NBC's Today ), which usually mixes news, weather, lifestyle segments, interviews and music performances. Network daytime schedules consist of talk shows and soap operas, although one network – CBS – still carries game shows (a handful of other game shows otherwise air in syndication); local newscasts may air at midday timeslots. Syndicated talk shows are shown in
3192-455: A major network with a format primarily consisting of English language telenovelas ; however, after experiencing continued low ratings for its prime time-exclusive schedule (even after several programming revamps that followed over the next three years after the initial format faltered), it converted into a "broadcast programming service" in September 2009, adopting a format made up of reruns of series originally aired on other networks for ten hours
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#17327879608343344-503: A means of television channel selection. Analog broadcast television systems come in a variety of frame rates and resolutions. Further differences exist in the frequency and modulation of the audio carrier. The monochrome combinations still existing in the 1950s were standardized by the International Telecommunication Union (ITU) as capital letters A through N. When color television was introduced,
3496-399: A number of different broadcast television systems are in use worldwide, the same principles of operation apply. A cathode-ray tube (CRT) television displays an image by scanning a beam of electrons across the screen in a pattern of horizontal lines known as a raster . At the end of each line, the beam returns to the start of the next line; at the end of the last line, the beam returns to
3648-458: A number of smaller networks feeding programming to public stations – including World , First Nations Experience (focusing on Native American and indigenous programing), and Create (focusing on lifestyle, travel, cooking and how-to programs) – primarily through digital multicasting; the German public broadcaster Deutsche Welle has also provided blocks of programming to a variety of affiliates in
3800-531: A number of states – such as Wisconsin , Maryland , Minnesota , Oklahoma and South Carolina – have state-owned public broadcasting authorities that operate and fund all public television stations in their respective states. The Alabama Educational Television Commission, licensee for the nine stations comprising Alabama Public Television , was established by the Alabama Legislature in 1953. In January 1955, WCIQ on Mount Cheaha began operation as
3952-472: A primary affiliation until 2014, when it began accepting subchannel-only affiliates through deals with Gray Television and Nexstar Media Group . With the digital television transition, which was completed in two phases in February and June 2009, the use of digital multicasting has given breed to various networks created for distribution on these multiplexed feeds of new and existing stations. However, for
4104-559: A programming format on Liberman Broadcasting 's Spanish language independent stations in the early 2000s and eventually launched nationally in September 2009, featuring a traditional lineup of Latino-focused programming largely produced by Liberman) and LATV (which originated in 2002 as a programming format on KJLA in Los Angeles before becoming a national network in September 2007, and focuses mostly on unscripted music, talk and variety programs). V-me (Spanish pronunciation: [ˈbeme],
4256-500: A pun on veme, "watch me") is a Spanish broadcast television network formerly carried in association with public television stations created for the United States Hispanic market, which is currently pursuing a pay-TV model. V-me delivers drama, music, current affairs, food, lifestyle, nature and educational pre-school content to its viewers. Currently, The Hispanic Information and Telecommunications Network, Inc. (HITN)
4408-488: A reduced base price compared to providers using the more established pay television distribution methods. Individual broadcast television stations in the U.S. transmit on either VHF channels 2 through 13 or UHF channels 14 through 36. During the era of analog television , broadcast stations transmitted on a single universal channel; however due to the technical complexities of the present digital television standard, most stations now transmit physically on an RF channel that
4560-399: A second demodulator, the Z demodulator, also extracts an additive combination of U plus V, but in a different ratio. The X and Z color difference signals are further matrixed into three color difference signals, (R-Y), (B-Y), and (G-Y). The combinations of usually two, but sometimes three demodulators were: In the end, further matrixing of the above color-difference signals c through f yielded
4712-468: A signal extending as far as 80 miles [130 km] from the transmitter site), or an exclusive or primary affiliation with a low-power station with more limited signal coverage (which maintain a reduced transmitting power not exceeding 100 kilowatts, with a more limited signal radius covering an area 30–60 miles [48–97 km] from the transmitter). However unlike in other countries, to ensure local presences in television broadcasting, federal law restricts
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4864-462: A signal would not be compatible with monochrome receivers, an important consideration when color broadcasting was first introduced. It would also occupy three times the bandwidth of existing television, requiring a decrease in the number of television channels available. Instead, the RGB signals are converted into YUV form, where the Y signal represents the luminance of the colors in the image. Because
5016-438: A sister network of NBC (which acquired Telemundo in 2001) that was also established in 1986 through a consortium of three Spanish-language stations, WNJU /New York City, WBBS-TV /Chicago and KVEA /Los Angeles. It was considered an also-ran to Univision until the late 2000s, when parent company NBCUniversal began heavily investing in its news and entertainment programming. Unlike Univision, the majority of Telemundo's programming
5168-459: A small number of affiliates, mainly based in larger markets, carried news programming prior to the mid-1990s), often scheduled during the final hour of prime time – an hour earlier than newscasts seen on major network stations – at which time they compete with network dramas, rather than other local newscasts (although some news-producing Fox stations also carry newscasts in the traditional late news time period), and for one to three additional hours in
5320-423: A station is affiliated with NBC, it consequently would not air programs from ABC, CBS or other conventional broadcast networks but may carry specialty services intended to be carried on digital television signals on one or more subchannels. Arrangements in which television stations carried more than one network on its main signal (which often resulted in some network programs being not being cleared to air locally by
5472-653: A successor to the Spanish International Network (which debuted in September 1962, with Spanish language independent stations KMEX-TV in Los Angeles and KCOR-TV (now KWEX-DT ) in San Antonio , Texas as its charter stations). It has risen to become the fifth highest-rated television network in the U.S. (behind NBC, CBS, ABC and Fox) and is the dominant Spanish language network in the U.S., with its ratings having risen to levels where it has beaten at least one of its English language competitors since
5624-410: A television image is composed of scan lines drawn on the screen. The lines are of varying brightness; the whole set of lines is drawn quickly enough that the human eye perceives it as one image. The process repeats and the next sequential frame is displayed, allowing the depiction of motion. The analog television signal contains timing and synchronization information so that the receiver can reconstruct
5776-444: A television network. Stations may sign affiliation agreements with one of the national networks for the local rights to carry their programming; these contracts can last anywhere from one to ten years, although such agreements often last on average between four and six years. Except in very small markets with a limited number of commercial stations (generally, fewer than five), affiliation agreements are usually exclusive: for example, if
5928-448: A time ( ATSC 3.0 , which began development around the time of the 2009 transition with FCC consideration to replace the current ATSC 1.0 as the technological standard for digital television expected to occur in 2016, uses improved compression technology able to fit additional subchannels on a single programming stream as well as allowing for the transmission of high definition content in the 4K resolution format). Retro Television Network
6080-438: A two-dimensional moving image from a one-dimensional time-varying signal. The first commercial television systems were black-and-white ; the beginning of color television was in the 1950s. A practical television system needs to take luminance , chrominance (in a color system), synchronization (horizontal and vertical), and audio signals , and broadcast them over a radio transmission. The transmission system must include
6232-480: A volt. At this point the IF signal consists of a video carrier signal at one frequency and the sound carrier at a fixed offset in frequency. A demodulator recovers the video signal. Also at the output of the same demodulator is a new frequency modulated sound carrier at the offset frequency. In some sets made before 1948, this was filtered out, and the sound IF of about 22 MHz was sent to an FM demodulator to recover
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6384-508: A week on Mondays through Fridays. Ion broadcasts 24 hours a day, seven days a week (though only eighteen hours of its schedule each day consist of entertainment programming, with infomercials and religious programming making up the remainder of the schedule), making the Ion network the largest English-language commercial television network to be totally responsible for its affiliates' programming. Ion differs from other commercial networks in that
6536-863: Is MeTV , a classic television network originally launched by station owner Weigel Broadcasting in 2005 as a programming format on one of its flagship television stations in Chicago, WFBT-CA (now WWME-CD ), and evolved into a national network in November 2010; MeTV now has affiliations with primary channels in a number of markets ( WJLP in the New York City market, WDPN-TV in Philadelphia and Delaware, and WGTA in Atlanta). Both MeTV and its most prominent rival, Nexstar-owned Antenna TV (originally founded in 2010 by Tribune Broadcasting ), popularized
6688-508: Is Sound-in-Syncs . The luminance component of a composite video signal varies between 0 V and approximately 0.7 V above the black level. In the NTSC system, there is a blanking signal level used during the front porch and back porch, and a black signal level 75 mV above it; in PAL and SECAM these are identical. In a monochrome receiver, the luminance signal is amplified to drive
6840-411: Is a brief (about 1.5 microsecond ) period inserted between the end of each transmitted line of picture and the leading edge of the next line's sync pulse . Its purpose was to allow voltage levels to stabilise in older televisions, preventing interference between picture lines. The front porch is the first component of the horizontal blanking interval which also contains the horizontal sync pulse and
6992-506: Is easier to tune the picture without losing the sound. So the FM sound carrier is then demodulated, amplified, and used to drive a loudspeaker. Until the advent of the NICAM and MTS systems, television sound transmissions were monophonic. The video carrier is demodulated to give a composite video signal containing luminance, chrominance and synchronization signals. The result is identical to
7144-577: Is mapped to a virtual channel , which – with some exceptions – typically differs from their physical allocation and corresponds to the station's former analog channel. The UHF band originally spanned from channels 14 to 83, though the Federal Communications Commission (FCC) has reduced the bandwidth allocation for UHF three times since then. Channels 70 to 83 were cut for emergency and other telecommunications purposes in 1983. In 2009, channels 52 to 69 were removed by mandate at
7296-466: Is produced specifically for the network. In addition to carrying the traditional programming format for Spanish language broadcasters (which typically incorporates telenovelas, variety series, news, sports and films imported from Latin American countries), also includes dubbed versions of American feature film releases. Other popular Spanish-language broadcast networks are Univision-owned UniMás , which
7448-468: Is that the U and V signals are zero when the picture has no color content. Since the human eye is more sensitive to detail in luminance than in color, the U and V signals can be transmitted with reduced bandwidth with acceptable results. In the receiver, a single demodulator can extract an additive combination of U plus V. An example is the X demodulator used in the X/Z demodulation system. In that same system,
7600-405: Is the difference between the B signal and the Y signal, also known as B minus Y (B-Y), and the V signal is the difference between the R signal and the Y signal, also known as R minus Y (R-Y). The U signal then represents how purplish-blue or its complementary color, yellowish-green, the color is, and the V signal how purplish-red or its complementary, greenish-cyan, it is. The advantage of this scheme
7752-399: Is the largest Spanish-language broadcasting network in the United States. It delivers educational programming to over 42 million homes nationwide, and reaches over 40% of U.S. households. Its distribution network includes Comcast, DirecTV , Verizon FiOS , Dish Network , Altice USA , U-verse TV , Charter Communications , and a host of smaller distributors. Its stated mission is "to advance
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#17327879608347904-636: Is the largest operator of subchannel networks by total number (which are largely carried on low-power outlets), which in addition to the Retro Television Network include among others country and rural themed Heartland , automotive-centered Rev'n , children's network PBJ and a modern version of The Family Channel . Men's network Tuff TV was formerly managed as a Luken network but is now independent. Other subchannel-based networks include those that also rely on archived programming such as Buzzr (a network focusing of game shows sourced from
8056-500: Is the original television technology that uses analog signals to transmit video and audio. In an analog television broadcast, the brightness, colors and sound are represented by amplitude , phase and frequency of an analog signal. Analog signals vary over a continuous range of possible values which means that electronic noise and interference may be introduced. Thus with analog, a moderately weak signal becomes snowy and subject to interference. In contrast, picture quality from
8208-566: Is the same as the original U signal at the corresponding time. In effect, these pulses are discrete-time analog samples of the U signal. The pulses are then low-pass filtered so that the original analog continuous-time U signal is recovered. For V, a 90-degree shifted subcarrier briefly gates the chroma signal every 280 nanoseconds, and the rest of the process is identical to that used for the U signal. Gating at any other time than those times mentioned above will yield an additive mixture of any two of U, V, -U, or -V. One of these off-axis (that is, of
8360-542: Is transmitted. Therefore, the receiver must reconstitute the subcarrier. For this purpose, a short burst of the subcarrier, known as the colorburst, is transmitted during the back porch (re-trace blanking period) of each scan line. A subcarrier oscillator in the receiver locks onto this signal (see phase-locked loop ) to achieve a phase reference, resulting in the oscillator producing the reconstituted subcarrier. NTSC uses this process unmodified. Unfortunately, this often results in poor color reproduction due to phase errors in
8512-475: Is used to build the image. This process doubles the apparent number of video frames per second and further reduces flicker and other defects in transmission. The television system for each country will specify a number of television channels within the UHF or VHF frequency ranges. A channel actually consists of two signals: the picture information is transmitted using amplitude modulation on one carrier frequency, and
8664-413: Is used to reduce the channel spacing, which would be nearly twice the video bandwidth if pure AM was used. Signal reception is invariably done via a superheterodyne receiver : the first stage is a tuner which selects a television channel and frequency-shifts it to a fixed intermediate frequency (IF). The signal amplifier performs amplification to the IF stages from the microvolt range to fractions of
8816-514: The E. W. Scripps Company in 2017, launched two gender-focused networks with specific formats in August 2014 – Grit (aimed at men with a lineup heavy on western and action films) and Escape (now Court TV Mystery , aimed at women and featuring mystery and true crime programs) – and a genre-based network in April 2015, Laff (featuring a mix of comedic feature films and sitcoms). Luken Communications
8968-569: The Fox Broadcasting Company was launched as a challenge to the Big Three networks, with six independent stations that News Corporation (which acquired the 20th Century Fox the year before) had acquired from Metromedia as its cornerstone charter outlets, along with many independents owned by other companies. Thanks largely to the success of shows like The Simpsons , Beverly Hills, 90210 and The X-Files , as well as
9120-492: The ITU in 1961 as: A, B, C, D, E, F, G, H, I, K, K1, L, M and N. These systems determine the number of scan lines, frame rate, channel width, video bandwidth, video-audio separation, and so on. A color encoding scheme ( NTSC , PAL , or SECAM ) could be added to the base monochrome signal. Using RF modulation the signal is then modulated onto a very high frequency (VHF) or ultra high frequency (UHF) carrier wave . Each frame of
9272-969: The National Weather Service (such as loops of NEXRAD imagery and NOAA Weather Radio feeds) is frequently repurposed for television. The Public Broadcasting Service is the largest public television broadcaster in the United States, originating in October 1970 as the successor of National Educational Television (which was established in 1954). Unlike the commercial networks, PBS does not officially produce any of its own programming; instead, individual PBS stations (most notably, WNET in Newark, New Jersey /New York City, WGBH-TV in Boston and WETA-TV in Washington, D.C.), station groups and affiliated producers create programming and provide these through PBS to other affiliates. While it does provide
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#17327879608349424-762: The WFOX-TV and KFOX-TV calls are respectively used by Fox affiliates in Jacksonville, Florida and El Paso, Texas ). Fox's only scheduled news program is Fox News Sunday , which it airs on Sunday mornings; special news coverage on the network comes from the staff of its sister cable network Fox News (which launched in October 1996, around the same time as its affiliate video service Fox NewsEdge), though not every affiliate carries breaking news bulletins from Fox News outside of prime time presidential addresses, and national and international events of utmost urgency. Most of Fox's affiliates now have local newscasts (only
9576-523: The World Wide Web , which have become an increasingly popular mode of television viewing since the late 2000s, particularly with younger audiences as an alternative or a supplement to the aforementioned traditional forms of viewing television content; the 2010s saw the development of several virtual Multichannel Video Programming Distributor ( MVPD ) services offering "skinny" tiers of channels originally developed for cable and satellite distribution at
9728-430: The back porch . The back porch is the portion of each scan line between the end (rising edge) of the horizontal sync pulse and the start of active video. It is used to restore the black level (300 mV) reference in analog video. In signal processing terms, it compensates for the fall time and settling time following the sync pulse. In color television systems such as PAL and NTSC, this period also includes
9880-465: The colorburst signal. In the SECAM system, it contains the reference subcarrier for each consecutive color difference signal in order to set the zero-color reference. In some professional systems, particularly satellite links between locations, the digital audio is embedded within the line sync pulses of the video signal, to save the cost of renting a second channel. The name for this proprietary system
10032-534: The control grid in the electron gun of the CRT. This changes the intensity of the electron beam and therefore the brightness of the spot being scanned. Brightness and contrast controls determine the DC shift and amplification, respectively. A color signal conveys picture information for each of the red, green, and blue components of an image. However, these are not simply transmitted as three separate signals, because: such
10184-554: The "Big Three" (ABC, NBC and CBS) and those without a network affiliation. Saturday mornings usually feature network programming aimed at children (traditionally these mainly consisted of animated cartoons and in some cases, live-action scripted series and even game shows targeted at the demographic, although live-action lifestyle, science and wildlife programs have become the norm for the timeslot since 2009, while animated series have primarily been relegated to non-commercial and non-English language networks), while Sunday mornings include
10336-572: The 1970s and the 1990s); since the upspring of digital cable and satellite television during the mid- and late 1990s, additional channels with more limited distribution are offered as add-ons to the basic packages through separate tiers, which are commonly organized based on the programming format of the channels sold in the tier. A la carte subscription services in the US are primarily limited to pay television (more commonly known as "premium") channels that are offered as add-ons to any programming package that
10488-514: The 1990s, NBC called its own Thursday night lineup " Must See TV ", and during that decade, some of the country's most watched television shows aired on Thursday nights (several of which aired on NBC), before the re-emergence of Sunday as the top night of prime time programming in the 2000s. At the end of prime time, another local news program is broadcast, usually followed by late-night interview shows (such as The Late Show with Stephen Colbert or The Tonight Show ). Rather than sign off in
10640-436: The 1996–1997 season. In 1948, 1 percent of U.S. households owned at least one television ; in 1955, 75 percent did. In 1992, 60 percent of all U.S. households had cable television subscriptions . However, this number has fallen to 40% in 2024. As a whole, the television networks that broadcast in the United States are the largest and most distributed in the world, and programs produced specifically for American networks are
10792-429: The Eastern and Pacific Time Zones and 7:00 to 10:00 p.m. elsewhere, although this varies depending on the network and the day: the four major networks program an additional hour (running from 7:00 to 8:00 p.m. Eastern and Pacific, 6:00 to 7:00 p.m. elsewhere) on Sunday evenings (many Spanish language broadcast networks also program this additional hour to begin their prime time lineups on all seven nights of
10944-448: The NFL rights). Many of its affiliates in mid-size and small markets outsource news production to Big Three affiliates rather produce their own newscasts, and its flagship stations in New York City and Los Angeles do not include the network's name within their callsigns (Fox's owned-and-operated stations in New York City and Los Angeles instead use the respective callsigns WNYW and KTTV ;
11096-408: The NTSC and PAL color systems, U and V are transmitted by using quadrature amplitude modulation of a subcarrier. This kind of modulation applies two independent signals to one subcarrier, with the idea that both signals will be recovered independently at the receiving end. For NTSC, the subcarrier is at 3.58 MHz. For the PAL system it is at 4.43 MHz. The subcarrier itself is not included in
11248-411: The NTSC system. PAL's color encoding is similar to the NTSC systems. SECAM, though, uses a different modulation approach than PAL or NTSC. PAL had a late evolution called PALplus , allowing widescreen broadcasts while remaining fully compatible with existing PAL equipment. In principle, all three color encoding systems can be used with any scan line/frame rate combination. Therefore, in order to describe
11400-538: The Pentagon Channel (later renamed DoD News Channel ), a military news outlet that operated from 2004 to 2015. In addition, Broadcasting Board of Governors content (the most well-known being Voice of America ) has been available to U.S. consumers since the partial repeal of the Smith–Mundt Act in 2013; VOA and its sister outlets are likewise restricted to shortwave and Internet broadcasts. Content from
11552-541: The TV Land Awards and think there is great value in the franchise, but we will not be producing the show this spring.” After skipping 2014 as well, the Awards returned on April 18, 2015. For the 2016 ceremony, the awards were renamed the "TV Land Icon Awards". The ceremony has not been staged since that year. The following table summarizes the recipients of TV Land's "Discretionary Awards", which do not include any of
11704-405: The U and V axis) gating methods is called I/Q demodulation. Another much more popular off-axis scheme was the X/Z demodulation system. Further matrixing recovered the original U and V signals. This scheme was actually the most popular demodulator scheme throughout the 1960s. The above process uses the subcarrier. But as previously mentioned, it was deleted before transmission, and only the chroma
11856-798: The U.S. is the E. W. Scripps Company , whose stations cover 65% of the nation; Scripps primarily operates affiliates of the six major networks, most maintaining full-scale local operations and/or news departments, though its reach greatly expanded in 2021 through its purchase of Ion Media (corporate parent of namesake flagship network Ion Television ), whose stations by contrast are entirely centrally operated and do not maintain local programming, which it acquired to have that group's stations serve primarily as pass-through outlets for Scripps’ various multicast network properties. Two other ownership groups in particular, Sinclair Broadcast Group and Nexstar Media Group , do not produce network programming (Sinclair has produced original programs for its stations but not on
12008-482: The U.S., and increasingly feeds from other national broadcasters (including Deutsche Welle's DW-TV) have been distributed through digital subchannels belonging to public stations in the U.S. New York City's municipally-owned broadcast service, NYC Media , creates original programming that airs in several markets. Few cities have major municipally-owned stations. Many religious broadcast networks and stations exist, also surviving on viewer contributions and time leased to
12160-523: The U.S., usually historically broadcasting on the UHF band; however the number of them had drastically decreased (especially within individual markets) after 1995 due to the formation of newer broadcast networks that were created to compete against the four established competitors. Syndicated shows, often reruns of television series currently in or out of production and movies released as recently as three years prior to their initial syndication broadcast, take up much of their schedules. However, in October 1986,
12312-533: The United Paramount Network ( UPN ; created as a programming partnership between Chris-Craft Industries / United Television and Paramount Television , which had been acquired the year prior by Viacom , which would gain full ownership of UPN five years after the network's launch) were launched primarily to compete against Fox, targeting the same younger demographic (teenagers and young adults 12 to 34) that network had built its success upon during
12464-407: The Y signal) represents the approximate saturation of a color, and the chrominance phase against the subcarrier reference approximately represents the hue of the color. For particular test colors found in the test color bar pattern, exact amplitudes and phases are sometimes defined for test and troubleshooting purposes only. Due to the nature of the quadrature amplitude modulation process that created
12616-474: The afternoon hours on weekends on a few stations due to other locally scheduled programs). The CW is the only major broadcast network that operates a national programming service feed for smaller markets, The CW Plus (a successor to The WB's group of cable-only affiliates, The WB 100+ Station Group , which launched in September 1998 to provide the network's programming to markets where it would otherwise not be able to gain adequate over-the-air coverage), which, as
12768-518: The airing of indecent content) to retain it; the FCC's Board of Commissioners maintains oversight of the renewal of existing station licenses approaching their expiration, with individuals or groups who wish to oppose the granting of a renewal to a licensee based on any disagreement over rule compliance or any other issues inclined to contest it for consideration of revocation. Free-to-air and subscription television networks, however, are not required to file for
12920-441: The amount of network programming that local stations can run. Until the 1970s and 1980s, local stations supplemented network programming with a sizeable amount of their own locally produced shows, which encompassed a broad content spectrum that included variety, talk, music and sports programming. Today however, many (though not all) stations produce only local news programs, and in some cases, public affairs programs (most commonly, in
13072-641: The awards voted on by viewers (which are generally awarded to actors/actresses or characters). Television in the United States History of: Television is one of the major mass media outlets in the United States . In 2011, 96.7% of households owned television sets; about 114,200,000 American households owned at least one television set each in August 2013. Most households have more than one set. The percentage of households owning at least one television set peaked at 98.4%, in
13224-435: The basic sound signal. In newer sets, this new carrier at the offset frequency was allowed to remain as intercarrier sound , and it was sent to an FM demodulator to recover the basic sound signal. One particular advantage of intercarrier sound is that when the front panel fine tuning knob is adjusted, the sound carrier frequency does not change with the tuning, but stays at the above-mentioned offset frequency. Consequently, it
13376-423: The beginning of the first line at the top of the screen. As it passes each point, the intensity of the beam is varied, varying the luminance of that point. A color television system is similar except there are three beams that scan together and an additional signal known as chrominance controls the color of the spot. When analog television was developed, no affordable technology for storing video signals existed;
13528-419: The brightness control signal ( luminance ) is fed to the cathode connections of the electron guns, and the color difference signals ( chrominance signals) are fed to the control grids connections. This simple CRT matrix mixing technique was replaced in later solid state designs of signal processing with the original matrixing method used in the 1954 and 1955 color TV receivers. Synchronizing pulses added to
13680-578: The chrominance information was added to the monochrome signals in a way that black and white televisions ignore. In this way backward compatibility was achieved. There are three standards for the way the additional color information can be encoded and transmitted. The first was the American NTSC system. The European and Australian PAL and the French and former Soviet Union SECAM standards were developed later and attempt to cure certain defects of
13832-436: The chrominance signal, at certain times, the signal represents only the U signal, and 70 nanoseconds (NTSC) later, it represents only the V signal. About 70 nanoseconds later still, -U, and another 70 nanoseconds, -V. So to extract U, a synchronous demodulator is utilized, which uses the subcarrier to briefly gate the chroma every 280 nanoseconds, so that the output is only a train of discrete pulses, each having an amplitude that
13984-425: The combining process, the low-resolution portion of the Y signals cancel out, leaving R, G, and B signals able to render a low-resolution image in full color. However, the higher resolution portions of the Y signals do not cancel out, and so are equally present in R, G, and B, producing the higher-resolution image detail in monochrome, although it appears to the human eye as a full-color and full-resolution picture. In
14136-578: The completion of the transition from analog to digital television . In 2020, transition away from channels above 36 was completed to make room for its use by telecommunications companies, after a 2017 spectrum auction. As in other countries, television stations require a license to broadcast legally (which any prospective broadcaster can apply for through the FCC) and must comply with certain requirements (such as those involving programming of public affairs and educational interest, and regulations prohibiting
14288-486: The composite video format used by analog video devices such as VCRs or CCTV cameras . To ensure good linearity and thus fidelity, consistent with affordable manufacturing costs of transmitters and receivers, the video carrier is never modulated to the extent that it is shut off altogether. When intercarrier sound was introduced later in 1948, not completely shutting off the carrier had the side effect of allowing intercarrier sound to be economically implemented. Each line of
14440-634: The development of the cathode-ray tube (CRT), which uses a focused electron beam to trace lines across a phosphor coated surface. The electron beam could be swept across the screen much faster than any mechanical disc system, allowing for more closely spaced scan lines and much higher image resolution. Also, far less maintenance was required of an all-electronic system compared to a mechanical spinning disc system. All-electronic systems became popular with households after World War II . Broadcasters of analog television encode their signal using different systems. The official systems of transmission were defined by
14592-503: The disc to scan an image. A similar disk reconstructed the image at the receiver. Synchronization of the receiver disc rotation was handled through sync pulses broadcast with the image information. Camera systems used similar spinning discs and required intensely bright illumination of the subject for the light detector to work. The reproduced images from these mechanical systems were dim, very low resolution and flickered severely. Analog television did not begin in earnest as an industry until
14744-417: The displayed image is transmitted using a signal as shown above. The same basic format (with minor differences mainly related to timing and the encoding of color) is used for PAL, NTSC , and SECAM television systems. A monochrome signal is identical to a color one, with the exception that the elements shown in color in the diagram (the colorburst , and the chrominance signal) are not present. The front porch
14896-550: The earliest method of receiving television programming, which merely requires an antenna and an equipped internal or external tuner capable of picking up channels that transmit on the two principal broadcast bands, very high frequency (VHF) and ultra high frequency (UHF), to receive the signal – and four conventional types of multichannel subscription television: cable , unencrypted satellite (" free-to-air "), direct-broadcast satellite television and Internet Protocol Television (IPTV). There are also competing video services on
15048-456: The early 1990s, some broadcasters have also used a shell company to circumvent certain ownership restrictions by way of a local marketing agreement ; groups can cover up to 78% of the United States with their signals under the "UHF discount" (originally passed in 1985 to benefit UHF television stations that, prior to the 2009 digital transition, often had spotty signal quality), which allows broadcasters to count ownership of UHF stations by 50% of
15200-573: The early pre-dawn hours of the morning (as was standard practice until the early 1970s in larger markets and until the mid-1980s in smaller ones), television stations now fill the time with syndicated programming, reruns of prime time television shows or late local newscasts (the latter becoming less common since the early 2000s), or 30-minute advertisements, known as infomercials , and in the case of CBS and ABC, overnight network news programs. On some stations, syndicated programming may fill timeslots where local newscasts would traditionally air, either due to
15352-595: The educational, social, cultural, and economic circumstances of Hispanics." French language programming is generally limited in scope, with some locally produced French and creole programming available in the Miami area (serving refugees from Haiti ) and Louisiana , along with some locales along the heavily populated Eastern Seaboard . Francophone areas near the eastern portion of the Canada–United States border generally receive television broadcasts presented in
15504-418: The evening, drama series of various types (such as NCIS , Law & Order: Special Victims Unit and Grey's Anatomy ) air. Sunday is the most-watched night on American television, with many of TV's most popular shows airing on that night. Viewership tends to then decline throughout the week, culminating in the lowest ratings being registered on Friday and Saturday night; most broadcast networks abandoned
15656-532: The event is scheduled to occur later in the day or extends beyond the set time block. (At the insistence of sports leagues, most televised sporting events are required to be broadcast until their completion. This is partly in reaction to the infamous 1968 " Heidi Bowl " telecast in which NBC interrupted a National Football League (NFL) game between the New York Jets and the Oakland Raiders to air
15808-427: The first half of the decade. In August 1998, Paxson Communications (later Ion Media prior to being bought by Scripps in 2021) launched Pax TV to counterprogram the four larger networks as well as The WB and UPN, with a focus on family-oriented original and acquired programming; due to underperforming viewership in its initial format, Pax relaunched as i: Independent Television (focusing more on reruns and movies aimed at
15960-500: The form of news and/or political analysis shows); the remainder of their schedules are filled with syndicated programs, or material produced independently and sold to individual stations in each local market. The method of most commercial stations – those that rely, at least partly, on advertising for revenue – acquiring programs through distributors of syndicated content to fill time not allotted to network and/or local programming differs from other countries worldwide where networks handle
16112-427: The format for multicasting that relies on archived programming. This TV (owned by Allen Media Group , and co-founded by Weigel and Metro-Goldwyn-Mayer ) used a similar format, focusing on older as well as some relatively recent feature films; it helped to spawn similar movie-oriented broadcast networks such as Movies! (a joint venture between Weigel and Fox Television Stations , which relies primarily on films from
16264-677: The former's Word of God Fellowship ministry purchased the license of defunct UHF station KMPX (now an Estrella TV owned-and-operated station) in Dallas, Texas . Most of their stations are owned by the television ministries directly or through subsidiary companies ( Community Educational Television and Word of God Fellowship, respectively) used by them to operate stations that TBN and Daystar cannot own outright due to FCC regulations prohibiting individual broadcasting companies from owning television stations reaching more than 39% of all U.S. television markets. Analog television Analog television
16416-915: The language from French Canadian networks (such as Ici Radio-Canada Télé and TVA ), which are widely available over-the-air but rarely on cable in those areas. Many large cities also have television stations that broadcast programming in various Asian languages (such as KTSF in San Francisco), especially after the digital television transition, which has allowed some smaller stations in areas with heavy populations of Asian immigrants and American natives of Asian origin fluent in one of that continent's indigenous languages to carry such programming either as primary channel or subchannel affiliations. A few unusual examples of other foreign broadcasters also exist, such as Greek language WZRA-CD in Florida and Polish language WPVN-DT4 in Chicago. There have also been
16568-398: The late 1990s. Although Univision originally featured programming content from a variety of distributors, the network now relies mainly on programs sourced from Mexico's dominant broadcaster, Televisa (which has maintained partial ownership of Univision's corporate parent on and off throughout its history) as well as domestically produced programming. Its major competition is Telemundo ,
16720-487: The late afternoon, followed by additional local newscasts in the early evening time period. ABC, CBS and NBC offer network news programs each evening, generally airing at 6:30 or 7:00 p.m. in the Eastern Time Zone (5:30 or 6:00 p.m. in other areas), however these are sometimes subject to pre-emption on weekends and select holidays due to sports programming that overlaps into the time slot, either because
16872-559: The library of the latter's former sister film studio, 20th Century Studios ) and GetTV (which mainly airs films from the library of owner Sony Pictures Entertainment ). Demographically focused networks were created during the 2010s; Bounce TV was launched in September 2011 by Martin Luther King III and Andrew Young , featuring a broader general entertainment format aimed at African American adults. Katz Broadcasting , owned by Bounce executive Jonathan Katz and purchased by
17024-488: The local level. The federal government has imposed limits on how many stations an individual owner can hold. The earliest limits restricted owners from holding more than five stations across the entire country, and no more than one in any given market. As of 2017, these limits have been relaxed substantially. Since 1999, an ownership group is now legally allowed to own up to two signals in a market (which can amount to many more actual channels through digital transmission); since
17176-579: The lower bandwidth requirements of compressed digital signals , beginning just after the year 2000, a digital television transition is proceeding in most countries of the world, with different deadlines for the cessation of analog broadcasts. Several countries have made the switch already, with the remaining countries still in progress mostly in Africa, Asia, and South America. The earliest systems of analog television were mechanical television systems that used spinning disks with patterns of holes punched into
17328-401: The luminance signal had to be generated and transmitted at the same time at which it is displayed on the CRT. It was therefore essential to keep the raster scanning in the camera (or other device for producing the signal) in exact synchronization with the scanning in the television. The physics of the CRT require that a finite time interval be allowed for the spot to move back to the start of
17480-466: The major broadcast networks may also rely on digital subchannels to be seen in these areas, as the market may not be populous enough to support a financially independent station for each network. As such FCC regulations govern cable providers must provide basic service at a reasonable cost. (Since advent of digital television equipment, the cost is responsibility of the consumer.) Several Spanish language broadcast (as well as cable) networks exist, which are
17632-469: The majority of its stations are owned-and-operated by its parent company with very few affiliates, and it is distributed exclusively via cable and satellite in markets where the network does not have a local station; Ion was the last of the seven conventional English language commercial broadcast networks to expand into distribution via digital multicasting, having relied entirely on cable and satellite distribution in markets where it otherwise could not maintain
17784-435: The modulated signal ( suppressed carrier ), it is the subcarrier sidebands that carry the U and V information. The usual reason for using suppressed carrier is that it saves on transmitter power. In this application a more important advantage is that the color signal disappears entirely in black and white scenes. The subcarrier is within the bandwidth of the main luminance signal and consequently can cause undesirable artifacts on
17936-536: The morning that overlap with morning news programs on ABC, NBC and CBS. Three new networks launched in the 1990s: within six days of each other in January 1995, The WB Television Network (which was originally formed as a venture between Time Warner, Tribune Broadcasting – which made the majority of its independent stations principal charter affiliates of the network – and former Fox executive Jamie Kellner , who served as The WB's original chief executive officer) and
18088-517: The most common form of non-English television broadcasts. These networks are not as widely distributed over-the-air as their English counterparts, available mostly in markets with sizeable Latino and Hispanic populations; several of these over-the-air networks are alternatively fed directly to cable, satellite and IPTV providers in markets without either the availability or the demand for a locally based owned-and-operated or affiliate station. The largest of these networks, Univision , launched in 1986 as
18240-576: The most part, very few of these networks have been able to gain a national reach on parity with many of the conventional commercial and non-commercial networks, in part due to the fact that many stations transmit high definition programming on their main feed in 1080i , which requires a bitrate less compartmentalized for allowing more than one multicast feed (which are generally transmitted in standard definition ) without risking diminished picture quality; some alternately transmit their main feed in 720p , which favors multiplexing of more than two subchannels at
18392-434: The most widely syndicated internationally. Because of a surge in the number and popularity of critically acclaimed television series in the 2000s and the 2010s, many critics have said that American television has entered a modern golden age ; whether that golden age has ended or is ongoing in the early 2020s is disputed. In the United States, television is available via broadcast (also known as "over-the-air" or OTA) –
18544-454: The narrowing of competition in modern television broadcasting. Weekday schedules on ABC, CBS, and NBC affiliates tend to be similar, with programming choices sorted by dayparts (Fox does not air network programming outside of prime time other than sports programming that airs on weekends and, on fairly rare occasions, weekdays). Typically, these begin with an early-morning national newscast (such as ABC's America This Morning ), followed by
18696-599: The nation's ninth non-commercial television station. Four months later in April 1955 with the sign-on of WBIQ in Birmingham , Alabama became the first state in the country with an educational television network. Alabama Public Television was a model for other states in the nation and for television broadcasters in other countries. 25 other states copied Alabama's system of operation to provide service through multiple, linked television stations, using full-power satellite stations and (in some cases) low-power translators to relay
18848-410: The negative side-effect of causing image smearing and blurring when there is rapid on-screen motion occurring. The maximum frame rate depends on the bandwidth of the electronics and the transmission system, and the number of horizontal scan lines in the image. A frame rate of 25 or 30 hertz is a satisfactory compromise, while the process of interlacing two video fields of the picture per frame
19000-467: The network intentionally did to sidestep FCC regulations for television networks in effect at Fox's launch), and some of its major market affiliates used to broadcast on UHF before the digital transition (several affiliates though broadcast on VHF pre-transition, primarily as a result of affiliation deals with former longtime Big Three affiliates owned by now-defunct station groups New World Communications and SF Broadcasting that it signed after acquiring
19152-793: The network's acquisition of rights to show games from the National Football League 's National Football Conference arm in December 1993, Fox has established itself as a major player in broadcast television. However, Fox differs from the three older networks in that it does not air daily morning and nightly news programs or have network-run daytime or weeknight late night schedules (though the network made previous failed attempts at late night programming on Monday through Friday evenings between 1986 and 1993; Fox ceased original late night programming in favor of reruns in 2016). Its nightly prime-time schedule runs only two hours long on Monday through Saturdays and three hours on Sundays (something
19304-451: The next line ( horizontal retrace ) or the start of the screen ( vertical retrace ). The timing of the luminance signal must allow for this. The human eye has a characteristic called phi phenomenon . Quickly displaying successive scan images creates the illusion of smooth motion. Flickering of the image can be partially solved using a long persistence phosphor coating on the CRT so that successive images fade slowly. However, slow phosphor has
19456-872: The originating station's programming to other areas. Similar state networks have also been created by commercial broadcasters to relay network programming throughout portions or even the entirety of a state. The federal government does subsidize non-commercial educational television stations through the Corporation for Public Broadcasting . The income received from the government is insufficient to cover expenses and stations rely on corporate sponsorships and viewer contributions (including from private benefactors) to finance their operations and programming production. Various public television outlets – albeit not on all individual PBS member and independent public broadcasting stations and PBS member networks simultaneously – hold pledge drives two to four times per year, which account for
19608-452: The phase of the signal on each successive line, and averaging the results over pairs of lines. This process is achieved by the use of a 1H (where H = horizontal scan frequency) duration delay line. Phase shift errors between successive lines are therefore canceled out and the wanted signal amplitude is increased when the two in-phase ( coincident ) signals are re-combined. NTSC is more spectrum efficient than PAL, giving more picture detail for
19760-488: The picture, all the more noticeable in black and white receivers. A small sample of the subcarrier, the colorburst , is included in the horizontal blanking portion, which is not visible on the screen. This is necessary to give the receiver a phase reference for the modulated signal. Under quadrature amplitude modulation the modulated chrominance signal changes phase as compared to its subcarrier and also changes amplitude. The chrominance amplitude (when considered together with
19912-706: The population. The four major U.S. broadcast television networks are the National Broadcasting Company ( NBC ), CBS (an abbreviation for the Columbia Broadcasting System, its former legal name), the American Broadcasting Company (ABC), and the Fox Broadcasting Company (Fox). The first and elder three (which are colloquially known as the " Big Three ") began as radio networks: NBC and CBS respectively began operations in 1926 and 1927. ABC
20064-739: The possible combinations exist. NTSC is only used with system M, even though there were experiments with NTSC-A ( 405 line ) in the UK and NTSC-N (625 line) in part of South America. PAL is used with a variety of 625-line standards (B, G, D, K, I, N) but also with the North American 525-line standard, accordingly named PAL-M . Likewise, SECAM is used with a variety of 625-line standards. For this reason, many people refer to any 625/25 type signal as PAL and to any 525/30 signal as NTSC , even when referring to digital signals; for example, on DVD-Video , which does not contain any analog color encoding, and thus no PAL or NTSC signals at all. Although
20216-856: The programming library of owner Fremantle ) and Comet (launched by the Sinclair Broadcast Group and Metro-Goldwyn-Mayer in October 2015, focusing on science fiction series and films sourced from the MGM library), and networks which do not completely if at all rely on archived scripted programming like Court TV (a network developed by Katz/Scripps as a revival of the cable network now known as TruTV , which mainly airs court trial coverage and true crime programming), WeatherNation TV (an independently owned 24-hour weather network which features subchannels as part of its multiplatform distribution model), TheCoolTV and The Country Network (which rely on music videos). In smaller cities and rural areas,
20368-534: The programming of first-run scripted fare on Saturdays by 2004, in favor of sports, newsmagazines and burn-offs and reruns of other prime time series; however first-run scripted programming continues to air on Fridays, being mixed in with newsmagazines and/or reality series, depending on the network. Networks, however, pay special attention to Thursday night, which is the last night for advertisers of weekend purchases – such as cars, movie tickets and home video rentals – to reach large television audiences. Throughout
20520-562: The programming producers; the two most prominent are the Trinity Broadcasting Network , which was founded in 1973 by Paul and Jan Crouch as a part-time ministry that leased programming time on KBSA (now UniMás owned-and-operated station KFTR-DT ) in the Los Angeles exurb of Ontario, California , before moving to KLXA-TV (now KTBN-TV ) in Fontana , which it began purchasing time on in the following year after KBSA
20672-468: The received signal, caused sometimes by multipath, but mostly by poor implementation at the studio end. With the advent of solid-state receivers, cable TV, and digital studio equipment for conversion to an over-the-air analog signal, these NTSC problems have been largely fixed, leaving operator error at the studio end as the sole color rendition weakness of the NTSC system. In any case, the PAL D (delay) system mostly corrects these kinds of errors by reversing
20824-400: The remnants of DuMont, is a relative newcomer that began operations in 1986 and expanded its programming through the 1990s. The Paramount Television Network flourished simultaneously with Fox, if less successfully. All in all, the U.S. broadcasting landscape dramatically evolved towards a conglomeratization of players – an effect also called concentration of media ownership , which describes
20976-432: The rendering of colors in this way is the goal of both monochrome film and television systems, the Y signal is ideal for transmission as the luminance signal. This ensures a monochrome receiver will display a correct picture in black and white, where a given color is reproduced by a shade of gray that correctly reflects how light or dark the original color is. The U and V signals are color difference signals. The U signal
21128-412: The responsibility of programming first-run and syndicated programs, whereas their partner stations are only responsible for the programming of local content. The international programming model is used in the US by some smaller networks and multicast services, which are more cost-effective for their affiliate stations since they require little to no acquired or locally produced programming to fill airtime at
21280-561: The six larger commercial English language broadcast networks, its member stations handle the responsibility of programming time periods where programming supplied by the service is not broadcast, which are filled by cultural and public affairs programming of relevance to their market or region of service, and syndicated programs of various genres. Most (but, by no means, all) public television stations are members of PBS, sharing programs such as Sesame Street , NOVA and Masterpiece Theatre . Although many PBS stations operate individually,
21432-415: The sound is transmitted with frequency modulation at a frequency at a fixed offset (typically 4.5 to 6 MHz) from the picture signal. The channel frequencies chosen represent a compromise between allowing enough bandwidth for video (and hence satisfactory picture resolution), and allowing enough channels to be packed into the available frequency band. In practice a technique called vestigial sideband
21584-415: The station maintains a primary affiliation are usually carried over digital subchannels, which increasingly since the mid-2000s, have allowed one of the major broadcast networks to expand their national coverage to markets where they would have previously either had to settle for a secondary affiliation with a full-power television station (which maintain transmitting power as high as 1000 kilowatts and outputs
21736-474: The station not programming news in certain time periods or because it does not operate a news department; similarly, local news programs in the late evening hours may air during the final hour of prime time (10:00 p.m. in the Eastern and Pacific Time Zones and 9:00 p.m. in all others) and/or during the morning commute period (7:00 to 9:00 or 10:00 a.m. in all time zones), usually on stations affiliated with networks other than those classified as part of
21888-472: The station's audience reach. (The "discount" was repealed by the FCC under Chair Tom Wheeler and his Democrat -led board in 2015, but was reinstated by Wheeler's successor and former board colleague, Ajit Pai and his fellow Republican commissioners in April 2017.) All four of the major television networks directly own and operate a number of stations, concentrating mostly on the largest metropolitan areas. The largest ownership group in terms of coverage of
22040-405: The station, thereby limiting their national carriage and resulting in viewers having to rely on an out-of-market station receivable in their area that airs the locally pre-empted show through an affiliation with that same network to see it) were more common between the 1940s and the 1960s, although some arrangements continued as late as 2010. Today, programming from networks other than that with which
22192-434: The three color-difference signals, (R-Y), (B-Y), and (G-Y). The R, G, and B signals in the receiver needed for the display device (CRT, Plasma display, or LCD display) are electronically derived by matrixing as follows: R is the additive combination of (R-Y) with Y, G is the additive combination of (G-Y) with Y, and B is the additive combination of (B-Y) with Y. All of this is accomplished electronically. It can be seen that in
22344-554: The week); Fox, The CW and MyNetworkTV, in contrast, do not carry any programming during the 10:00/9:00 p.m. hour and leave that hour for their affiliates to provide programming of their own. Typically, family-oriented comedy programs led in the early part of prime time, although in recent years, reality television programs (such as Dancing with the Stars and American Idol ), and more adult-oriented scripted programs – both comedies and dramas – have largely replaced them. Later in
22496-410: The week. From 1956 to 1986, the majority of English-language television stations that were not affiliated with the Big Three networks, nor affiliates of National Educational Television nor, arguably, (from 1956 to 1961) the smaller NTA Film Network were " independent ," airing only syndicated and some locally produced programming to fill their daily schedules. Many independent stations still exist in
22648-527: Was spun off from NBC to Edward J. Noble in 1943 as the Blue Network during FCC inquiries over NBC's dominant share of the American radio market, although the ABC television network would not reach viewership and distribution parity with NBC and CBS until the late 1960s. DuMont Television Network (1948–1956) and NTA Film Network (1956–1961) were early attempts at a " fourth network ". Fox, built partly on
22800-544: Was among the first networks to be produced specifically for the digital television market; Equity Broadcasting created the network in 2005, originally relying mostly on public domain series before expanding to a broader library of licensed reruns. RTN's initial success was dented by its owner's financial collapse and further difficulties pertaining to its successor, current owner Get After It Media (Luken Communications). The most popular and widely distributed network that uses digital subchannels as its primary form of distribution
22952-428: Was launched in January 2002 and is aimed at a younger Hispanic demographic; Azteca , the American version of Mexico's Azteca networks, which debuted in July 2001; TeleXitos aimed at Hispanic and Latino Americans, the network airs a mix of dramatic television series from the 1970s to the 2000s and movies, with all programming consisting of shows dubbed into Spanish; and independent networks Estrella TV (which began as
23104-632: Was sold; it gradually became the most widely distributed Christian television network in the world with 20 networks (including five in the United States that are primarily available through multicasting, The Church Channel , the youth-oriented JUCE TV and Smile of a Child TV , and the Latino-oriented TBN Enlace USA and TBN Salsa ) and several affiliates internationally; and the Daystar Television Network , founded in 1993 by Marcus and Joni Lamb , when
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