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System Overview
A layer is defined as an image display element (such as a background, PIP or Key) with an associated visual priority. The mixer itself has one layer, which can be assigned to either PIP or Key functionality.
A typical
Background (Matte)
PIP
DSK
Wilderness
Figure 1-3. Layer Illustration — Background, Mixer and DSK
Please note the following important points:
•The full screen LOGO is the highest priority layer. This image visually appears “over” all other layers.
•The Downstream Key (DSK) is the second highest priority layer. It visually appears over the mixer and the background — but it is “under” the LOGO.
•The high resolution Background is the lowest priority layer, which appears “behind” all other layers.
•Within the mixer, a PIP appears “over” the background and “under” the DSK and LOGO. Effects include mixes, wipes, resizing, adjustable aspect ratio, borders, drop shadows and soft edges.
•Within the mixer, a Key also appears “over” the background and “under” the DSK and LOGO. Effects include luminance key, reverse (invert) key, and color key (graphics).
•Up to eight analog inputs and one
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