- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
In television, a video frame update rate that provides the appearance of full motion without flicker or smear problems. Note: Picture motion appears to be full at greater than 16 fps (frames per second. ) European television operates at 25 fps and North American television at 30 fps.
Industry:Telecommunications
In television, nearly instantaneous switching between multiple video signals, based on the state, i.e., phase, of the color (chroma) signal of one, to form a single composite video signal. Note 1: Chroma keying is used to create an overlay effect in the final picture, e. G. , to insert a false background, such as a weather map or scenic view, behind the principal subject being photographed. Note 2: The principal subject is photographed against a background having a single color or a relatively narrow range of colors, usually in the blue or green. When the phase of the chroma signal corresponds to the preprogrammed state or states associated with the background color, or range of colors, behind the principal subject, the signal from the alternate, i.e., false, background is inserted in the composite signal and presented at the output. When the phase of the chroma signal deviates from that associated with the background color (s) behind the principal subject, video associated with the principal subject is presented at the output. Synonyms color keying, blue-screening, keying.
Industry:Telecommunications
In television, video, or motion-picture programming or production, a process in which one scene is gradually faded out while simultaneously being replaced by another.
Industry:Telecommunications
In the Application Layer of the OSI--Reference Model (OSI--RM,) the set of functions related to the management and status of various resources identified in all layers of the OSI--RM.
Industry:Telecommunications
In the approximation of a step function, the time required for a signal to change from a specified low value to a specified high value. Typically, these values are 10% and 90% of the step height.
Industry:Telecommunications
In the approximation of a step function, the time required for a signal to change from a specified low value to a specified high value. Typically, these values are 10% and 90% of the step height.
Industry:Telecommunications
In the characterization of antenna performance, a figure of merit, where G is the antenna gain in decibels at the receive frequency, and T is the equivalent noise temperature of the receiving system in kelvins.
Industry:Telecommunications
In the context of the FCC's Computer III Inquiry, the process of separating individual tariffed offerings and services that are associated with a specific element in the CEI or ONA tariff from other tariffed basic service offerings.
Industry:Telecommunications
In the context of the FCC's Computer Inquiry III, the overall design of a communication carrier's basic network facilities and services to permit all users of the basic network to interconnect to specific basic network functions and interfaces on an unbundled, equal-access basis. Note: The ONA concept consists of three integral components: (a) basic serving arrangements (BSAs,) (b) basic service elements (BSEs,) and (c) complementary network services.
Industry:Telecommunications
In the core of an optical fiber, a plot of the variation of refractive index such that the refractive index decreases with increasing radial distance from the fiber axis.
Industry:Telecommunications
