Imagine Videotek LLM-1770, Инструкция по установке и эксплуатации

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LLM-1770
Installation and Operation Manual
95
Transport Stream-ATSC (TS). Consists of the following: (1) Packets: 188 bytes - fixed
length with descriptive data, (2) Carries several programs, (3) has a PID which identifies the
type of TS packet (video, audio, other), and (4) carries descriptive information about the
program.
True Peak Level. The maximum value of an audio signal waveform in the continuous time
domain.
UHF. Ultra High Frequency
Unity Gain. An electronic term indicating that a signal will be neither amplified or
attenuated. One volt of signal level in results in one volt of signal level out.
Vector. A measure that has two individual properties: magnitude and direction.
Vector Clip. A special encoded clip version that limits only the Cb and Cr input video
signals and does not affect (nor is it affected by) the luminance component. This color-only
clip limits the maximum vector excursions as viewed in an encoded state and is intended for
users who wish to prevent encoded vectors from ever exceeding the perimeter circle of an
encoded vector display.
VHF. Very High Frequency
VITC. Vertical Interval Time Code, a method for recording on to video tape the timecode
address for each video frame inserted in the vertical interval.
Waveform. A visual representation of a signal in the shape of a wave that plots amplitude
versus time.
White Level. The brightest part of a video signal, corresponding to approximately 1.0 Volt.
White Balance. An electronic process used to calibrate the picture for accurate color
display in different lighting conditions.
Wipe. A special effect in which two pictures from different video sources are displayed on
one screen. Production switchers and special effects generators provide numerous wipe
patterns varying from simple horizontal and vertical wipes to multi-shaped, multi-colored
arrangements.
XGA. High resolution 1024×768 non-interlaced (progressive) display monitor
XVGA. Extended Video Graphics Adapter
YPbPr. CAV format composed of luminance (Y) and two color difference signals (Pb and Pr)
Y/C. Also S-video. Describes the separation of video signal luminance and chrominance
components.
Zero Carrier Pulse (chopper). In a TV demodulator, removes the carrier in the vertical
interval for a short period, enabling depth of field measurement.