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test-pattern sign

См. также в других словарях:

  • Sign-on — (or startup) is the term used to describe the beginning of operations for a television station. It is the opposite to a sign off (or closedown).As with sign offs, sign ons vary from country to country, and from station to station.North AmericaIn… …   Wikipedia

  • Sign-off — (or closedown) is the sequence of operations involved when a radio or television station shuts down its transmitters and goes off the air for a predetermined period; generally this occurs during the overnight hours. It is the opposite to a sign… …   Wikipedia

  • Test card — A test card, also known as a test pattern in the UK, North America and Australia, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast (often at startup and closedown). Used… …   Wikipedia

  • Test Card J — is a test card, an image used to determine the quality of a broadcast television picture. It is an updated version of Test Card F, which was created by BBC engineer George Hersee, and it first appeared in November 1999.DifferencesThe centre… …   Wikipedia

  • Sign — Any abnormality that indicates a disease process, such as a change in appearance, sensation, or function, that is observed by a physician when evaluating a patient. * * * 1. Any abnormality indicative of disease, discoverable on examination of… …   Medical dictionary

  • test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

  • Indian Head test card — The Indian Head Test Card was a black and white television test pattern which was introduced in 1939 by RCA of Harrison, New Jersey as a part of the RCA TK 1 Monoscope. 20th century television later became so important socially that this purely… …   Wikipedia

  • Central pattern generator — Central pattern generators (CPGs) are neural networks that produce rhythmic patterned outputs without sensory feedback.[1][2] CPGs have been shown to produce rhythmic outputs resembling normal rhythmic motor pattern production even in isolation… …   Wikipedia

  • List of Johnny Test characters — Promotional image featuring a majority of the series characters. Left to right: Susan Test, Gil, Dukey, Hugh Test, Mr. White, Johnny Test, Mr. Black, Lila Test, Sissy Blakely and …   Wikipedia

  • KIVA — Infobox Broadcast call letters = KIVA (Defunct) station station slogan = station branding = analog = 11 (VHF) digital = other chs = affiliations = founded = February 26 1953 Ceased operations January 31 1970 airdate = October 8 1953 location =… …   Wikipedia

  • Display contrast — Contrast in visual perception is the difference in appearance of two or more parts of a field seen simultaneously or successively (hence: brightness contrast, lightness contrast, color contrast, simultaneous contrast, successive contrast, etc.).… …   Wikipedia

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