- 行业: Telecommunications
- Number of terms: 29235
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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 a wideband packet node, the part of the node that receives packetized traffic, depacketizes it, and then plays it back as channelized traffic.
Industry:Telecommunications
In a Web page, line feeds, carriage returns, spaces, and other typed characters not visible through the browser display window but considered part of the content of a Web page.
Industry:Telecommunications
In a waveguide, a time-varying field having an amplitude that decreases monotonically as a function of transverse radial distance from the waveguide, but without an accompanying phase shift. Note 1: The evanescent field is coupled, i.e., bound, to an electromagnetic wave or mode propagating inside the waveguide. Note 2: The evanescent field is a surface wave. Note 3: In fiber optics, the evanescent field may be used to provide coupling to another fiber.
Industry:Telecommunications
In a waveguide that can support more than one propagation mode, the mode that propagates with the minimum degradation, i.e., the mode with the lowest cutoff frequency. Note: Designations for the dominant mode are TE10 for rectangular waveguides and TE11 for circular waveguides.
Industry:Telecommunications
In a waveguide or cavity, one of the various possible patterns of propagating or standing electromagnetic fields. Note 1: Each mode is characterized by frequency, polarization, electric field strength, and magnetic field strength. Note 2: The electromagnetic field pattern of a mode depends on the frequency, refractive indices or dielectric constants, and waveguide or cavity geometry. 2. Any electromagnetic field distribution that satisfies Maxwell's equations and the applicable boundary conditions. 3. In data communications, a protocol used to transfer data from switch to switch or from switch to terminal. 4. In statistics, the value associated with the highest peak in a probability density function.
Industry:Telecommunications
In a waveform consisting of two or more wave components at different frequencies, distortion caused by the difference in arrival times of the frequency components at the output of a transmission system. Synonym time-delay distortion.
Industry:Telecommunications
In a voice frequency telegraph (VFTG) transmission system, the use of two channels to carry the same information. Note: Tone diversity is usually achieved by twinning the channels of a 16-channel VFTG to obtain 8 channels with dual diversity.
Industry:Telecommunications
In a video display, the perception, by human vision faculties, of originally continuous motion as a sequence of distinct "snapshots. " Note 1: The perception of continuous motion by human vision faculties is a manifestation of complex functions, i.e., characteristics, of the eyes and brain. When presented with a sequence of fixed, i.e., still, images of sufficient continuity and at a sufficiently frequent update rate, the brain interpolates intermediate images, and the observer subjectively appears to see continuous motion that in reality does not exist. Note 2: For example, the update rate of NTSC television displays is 30 frames (60 fields) per second.
Industry:Telecommunications
In a video display, that form of edge busyness that is characterized by time-varying sharpness at the edges of objects.
Industry:Telecommunications
In a video display, that form of edge busyness that is characterized by spatially varying distortion that occurs in close proximity to the edges of objects.
Industry:Telecommunications
