Sony DVS-7300 System User Manual page 125

Keys
Masking
To mask unwanted portions or defects in the key or background, there are
two masks you can use: the main mask and the subsidiary mask.
• The main mask uses as source signal the box generator built into the M/E
bank keyer, or a dedicated mask pattern generator.
• The subsidiary mask uses as source signal a wipe generator from the M/E
bank or a signal selected on the utility bus.
You can use the main mask and subsidiary mask independently, or you can
use both simultaneously.
Using the main mask
By way of example, the following procedure uses the main mask on keyer 1
of the M/E-1 bank.
1
2
3
4-58
Chapter 4 Basic Operations for Image Creation
In the M/E-1 KEY 1 menu, select item 4 (MAIN MASK).
The MAIN MASK menu appears.
MASK TYPE MASK SOURCE
KEY BKGD
OFF MASK MASK
4H
F1 F2 F3
Function key indications in the MAIN MASK menu
Press F2 or F3, turning it on, to select the mask type.
F2 (KEY MASK): key masking
F3 (BKGD MASK): background masking
Press F4 or F5 to select the mask source.
F4 (BOX): signal generated by a dedicated box generator
F5 (PATTERN): signal generated by a dedicated pattern generator
MASK MASK
BOX PATTERN MODIFY INVERT
OFF
F4 F5 F6 F7 F8 F9 F10