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Glossary
GLOSSARY
Alpha Blending
Alpha Blending enables the ability to add transparency to any selected source.
Aspect ratio
horizontal & vertical dimension in which the window will be displayed, e.g. 4 by 3 or 16 by 9.
Color key
Sometimes also called chroma key. This is a method of combining two video images. An example of
chroma keying in action is the nightly news person standing in front of a giant weather map. In actuality,
the person is standing in front of a blue or green background and their image is mixed with a compute
r-
generated weather map. This is how it works: a TV camera is pointed at the person and fed along with
the image of the weather map into a box. Inside the box, a decision is made. Wherever it sees the blue
or green background, it displays the weather map. Otherwise, it shows the person. So, whenev
er the
person moves around, the box figures out where he is, and displays the appropriate image.
CVBS
Composite Video Broadcast System. For D320 CVBS module, also S-Video and Comp
osite Video avail-
able.
DVI
Digital Visual Interface. DVI is a high speed serial display interf
ace developed in response to the prolifer-
ation of digital flatpanel displays.
Overlap zone
The common area of 2 projector images next to each other. In this zone
there will be soft edge blending,
so that the combined screens will look like one big screen.
SDI
Serial Digital Interface
Slave direct
slave is directly connected to the previous digitizer by using the sync clock of the previous one.
Slave resync
slave is directly connected to the previous digitizer but the sync clock is restored.
Z-order
The layer sequence in which windows will be displ
ayed in relation to one another.
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