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Horizontal dot pitch
See Dot pitch.
Horizontal scanning frequency
Also called line frequency and expressed in kHz, it is the number of video lines written on the
screen every second (from left to right). The higher the horizontal scanning frequency, the better
the resolution (i.e., the higher the resolution and/or the higher the refresh rate).
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I
INF File
INF file (Information File)
Information (INF) files store information in a specific format. The set-up functions retrieve
information from the INF file to use when performing installation operations. Examples of the type
of information stored in an INF file include INI and registry changes, file names, and locations of
the source files on source media.
Interlaced/non-interlaced
Interlaced.
The method of writing a picture on the screen by initially writing all even lines and subsequently
writing all odd lines of the picture. Result: The complete picture is composed of two interlaced
half pictures (or fields). With interlacing, a vertical (or field) frequency of 50 Hz means a picture
(or frame) frequency of 25 Hz.
Non-interlaced.
The method of writing a picture on the screen by successive video lines of the picture so that a
full frame is written onto the screen in one vertical sweep of the beams. With a non-interlaced
display, a vertical frequency of 50 Hz means a picture (or frame) frequency of 50 Hz. At any
given resolution, non-interlaced modes are preferable to interlaced modes; however, generation
of non-interlaced modes is more expensive.