Videotek TVM9100PKG Installation And Operation Handbook page 279

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Frame A single full resolution picture as viewed in either a video or film system. In
the case of interlaced video, two consecutive fields provide all of the information of
one frame. In non-interlaced systems, one cycle of vertical synchronization produces a
frame. A 60 Hz interlaced system, produces 30 frames of video in one second. A 60 Hz
progressive (or non-interlaced) system, produces 60 frames of video in one second.
Common frame rates are 24 (film) 25, 29.97, 30, 50, 59.94 and 60.
Frame Synchronizer An electronic device that synchronizes two or more video
signals. Using one input as a reference, it locks a second signal to the reference.
Frame Store An electronic method of capturing and storing a single frame of video.
Full A full-screen display of the selected pane (non quad or multi display).
Gamma This term applies to the linearity of the change from black to white. Gamma
controls adjust the gray or 50% point of the video either up or down, with the effect of
changing the gray level of the video.
Gamut The whole or total of whatever is being addressed. In color space, gamut refers
to all colors which are included in a particularly defined color group, such as 601
gamut.
Genlock (Generator Lock) A method of synchronization involving the generation
of a video signal that is time and phase locked with another signal.
GPI General Purpose Interface
Headend In a cable TV system, the facilities where program sources (satellite,
terrestrial, VTR, local) are received and remodulated for distribution through a cable
plant.
High Definition Television (HDTV) High definition television has a resolution of
approximately twice that of conventional television in both the horizontal (H) and
vertical (V) dimensions and a picture aspect ratio (H to V) of 16:9.
High Level A range of allowed picture parameters defined by the MPEG-2 video
coding specification which corresponds to high definition television.
HRC Harmonically-Related Carrier
Hue Color tint
ICPM Incidental Carrier Phase Modulation. A measurement of picture carrier phase
distortion (affected by the video signal level) that occurs in the transmitter.
IP Internet Protocol
IRC Incrementally-Related Carrier
I.R.E. Refers to the Institute of Radio Engineers, and is used as a unit of measurement.
In NTSC television, 1 volt of signal equals 140 IRE units.
ISP Internet Service Provider
Jitter A deformation of a signal affected by poor synchronization.
Key An effect in television where a selected portion of background video is removed
and replaced with another video.
TVM Series Installation and Operation Handbook 255
Copyright © 2008, Harris Corporation