Pre-Delay
A pre-delay is a delay that is inserted into a
transition between the triggering of a GPI output
and performing the transition. The length of the
pre-delay is usually the length of time your
video server requires to start playing a clip or
your character generator required to load a
page.
RossTalk
An ethernet based protocol that allows the
control over Ross devices using plain english
commands.
Standard-Definition
A standard definition (480i or 576i) video signal.
Self Key
A key effect in which the same video signal
serves as both the key signal and key fill.
Shaped Key
An additive key where the Key Alpha cuts a hole
based on the monochrome value of the alpha.
Shades of gray are translated into either white
or black, giving the key a hard edge. Shaped Key
alphas are sometimes used with Character
Generators to cut very precise holes for the fill.
Split Key
A Split key allows you to assign a different alpha
source for a key than the fill/alpha associations
that are set up during configuration or to use a
separate alpha source for a Self key.
Tally
An indicator which illuminates when the
associated button, or control, is selected or is
on-air.
Unshaped Key
A multiplicative key where the Key Alpha cuts
a hole based on the gradient values of the alpha.
Shades of gray are translated into transparency
levels, giving the key a soft edge. Unshaped Key
alphas can also be considered true linear alphas.
Ultra User Manual (v6.6) — Glossary • 195
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