Z Microsystems StarGate 20, Руководство пользователя

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Doc# 27-0027UM Rev 1.0 Issued 10/04
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APPENDIX
default for PIP 1 = Cyan (R:0,G:255,B:255)
default for PIP 2 = Magenta (R:255,G:0,B:255)
default for PIP 3 = Chartreuse (R:135,G:255,B:0)
default for PIP 4 = Sand (R:255,G:204,B:153)
default guardband = 50
The default for this command is the green portion of the above RGB values minus the
guardband.
PLR
Description
PLR sets the lower-bound of the red portion of the RGB value used for chroma key. The
lower-bound of the color is determined by taking the color value that is desired (0-255)
and subtracting a guardband value to take into account accuracy limitations of the hard-
ware. The lower-bound limit is still “0” even with the guardband.
Argument
The allowable range is 0-255 base10. The default value is dependent on which one of the
PIPs being addressed. There are currently four chroma key colors used as default colors
they are the following:
default for PIP 1 = Cyan (R:0,G:255,B:255)
default for PIP 2 = Magenta (R:255,G:0,B:255)
default for PIP 3 = Chartreuse (R:135,G:255,B:0)
default for PIP 4 = Sand (R:255,G:204,B:153)
default guardband = 50
The default for this command is the red portion of the above RGB values minus the guard-
band.
PON
Description
PON toggles the NTSC PIP ON/OFF.
Argument
Provide a “1” to turn ON and a “0” to turn OFF.
PPC
Description
PPC changes the size of the NTSC PIP. The aspect ratio of the native glass (4:3) is main-
tained by the display.
Argument
The allowable range is 10-800 base10. Providing a value of 800 makes the PIP fi ll the
display.