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Section 4— Switcher Operations
Freeze Mode
Freeze selects between “live” and “frozen” pictures. A frozen
picture is like a snapshot you take with a still camera. The freeze/
unfreeze function toggles between the two states. Press the FRZE
button once to freeze (it high tallies) , press a second time to
unfreeze. When enabled, freeze stops data from being written to
the frame store, resulting in a frozen image.
Frame Store Field Modes
There are a number of video store parameters that may be used
when manipulating frozen images. While a full frame is always
frozen, you can choose to view the image by field instead. The
choices are described in the following text.
Field 1 / Field 2
The FIELD 1 and FIELD 2 buttons determine which field will be
displayed. 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.
Grab Field / 4 Field
A two-field sequence is the normal default image frozen in the
frame store. However, the memory architecture also allows
storage of a complete four-field color frame. A FRAME TYPE
button located in the Frame Store/Video Store Menu allows you
to switch between two-field storage mode and four-field storage
mode. 4-field mode stores 2 images. 2-field mode stores 4 images.
Not all of the Frame Store functions are available in four-field
mode, but this mode produces the highest quality video, since
there is no decode/encode processing.