W x y z – Philips 109F User Manual
Page 58
Glossary
V
Vertical dot pitch
See Dot pitch.
Vertical scanning frequency
Expressed in Hz, this is the number of fields written to the screen every second in interlaced mode.
In non-interlaced mode vertical scanning frequency is the number of frames (complete pictures)
written to the screen every second (also known as refresh rate).
Vertical sync pulses
A train of square shaped waveforms that define the start of a new frame.
VESA
Video Electronic Standards Association, a consortium of manufacturers formed to establish and
maintain industry-wide standards for video cards and monitors. VESA was instrumental in the
introduction of the Super VGA and Extended VGA video graphics standards (see Video graphics
adapters) with a refresh rate of 70 Hz, minimizing flicker and helping to reduce operator eyes
fatigue and stress.
Video dot rate
See Dot rate.
Video graphics adapters
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