Vizio P50HDM - 50" Plasma Panel Service Manual page 40

Figure 8-13 Display Windows and Timing
Data captured by the Input Capture Window and processed by the various image
manipulation blocks is output in the Display Active Window. This window is always in the
foreground and lies on top of all other output windows, except OSD overlay windows.
Typically the Display Active Window is set to the same size as the output of the Scaling
Engine. If the Display Active Window is set too small, then the bottom and right hand edges of
the image data are cropped. If the Display Active Window is set too large, then the extra
space to the left and bottom of the Display Active Window is forced to the Background
Window color.
Output Dithering The CLUT outputs a 10-bit value for each color channel. This value is
dithered down to either 8-bits for 24-bit per pixel panels, or 6-bits for 18-bit per pixel panels. In
this way it is possible to display 16.7 million colors on a LCD panel with 6-bit column drivers.
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