Glossary
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ELSA GLADIAC 5II
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40
EN
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Horizontal scan frequency –
Horizon-
tal scan frequency, monitor line frequency
in kHz. This value must be set according to
the monitor's requirements to prevent the
monitor from being damaged in extreme
cases!
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Interpolation –
When displayed, video
data must be stretched or shrunk to the
correct window size. If the individual pix-
els are simply multiplied when stretched,
unwanted blocks (the staircase effect,
) occur. This can be prevented us-
ing a filtering interpolation technique (av-
eraging). While horizontal interpolation is
easily accomplished, vertical interpolation
is more complicated and requires buffered
storage of the most recent image lines.
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ISSE –
Extended Intel command set cur-
rently used in the Pentium III processors.
70 additional commands are intended
above all to accelerate the floating-point
operations that are especially important
for 3D games.
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Luminance –
Black/white information in
the transfer of video signals.
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MIP mapping –
MIP mapping assigns
several textures with different resolutions
to an object based on distance. If the
observer gets closer to the object, the rep-
resentation of the texture becomes more
detailed.
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MMX –
Extended Intel command set used
by 166 MHz and higher Pentium proces-
sors bearing this designation. 57 addition-
al commands accelerate especially integer
operations.
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Multifrequency (multisync) monitor –
A monitor that can be operated using dif-
ferent line frequency ranges and can
adjust itself to different image signals
(resolutions).
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OpenGL API –
3D software interface (3D
API). Such as implemented in Windows NT
and optionally obtainable for Windows 95,
this is based on Iris GL from Silicon Graph-
ics and is licensed by Microsoft and ELSA.
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Page flipping –
In the faster Page flip-
ping method, only the buffer addresses are
exchanged. The slower method (
) copies the contents of the
.
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PCI bus –
Abbreviation for peripheral
component interconnect bus. A system of
parallel conductors for transferring data
between individual system components,
especially to expansion cards.
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Pixel –
A picture element
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Pixel frequency –
Pixel cycle frequen-
cy: The number of drawn
second in MHz.
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PolygonOffset –
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Primitive –
Simple, polygonal, geomet-
ric objects, such as triangles. In most
cases, 3D landscapes are broken down
into triangles.
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RAM –
Abbreviation for Random Access
Memory. Main memory and memory ex-
pansion in
ing on the graphics board.