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Frame Stores Subpanel
Operations that can be independently set for video, key and mask
channels are as follows:
■ Freeze
■ Grab
■ Field 1 and Field 2
When VIDEO STORE and KEY STORE are selected simultaneously,
the key channel settings are automatically aligned with the video
channel settings.
The FRZE button provides a freeze/unfreeze function that toggles
between states. Press once to freeze, press a second time to
unfreeze. When enabled, this button stops data from being written
to the frame store, resulting in a frozen image.
Pressing the
GRAB button updates the frame store with new input
data and freezes the new data. If freeze is off (moving video is
coming out of the frame store), pressing GRAB turns on freeze.
Freeze can be turned off again by pressing the FRZE button. If
freeze is on and GRAB is pressed, the frame store is unfrozen for
two or four fields and then frozen again (2 fields if in 2-field mode,
or 4 fields if in 4-field mode). The FRZE button remains lit to
indicate that freeze is still on. Since the GRAB button initiates a
single one-time action, it lights only while the button is pressed
and for a short instant afterward.
FIELD 1 and FIELD 2 determine the field, or fields, that are read out
while the image is frozen. Either field may be selected, or both
may be selected at the same time. When unfrozen, the Field
buttons have no effect.
A full frame is always frozen, regardless of the state of these
buttons. This method of storage allows the operator to decide
between fields and frames after the image is frozen.
FRZE
GRAB
FIELD
1
FIELD
2