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Frame Store Subpanel
Input Selection
Aux bus pair 4A/4B can be used to supply inputs to the frame
store video and key channels.
Output Routing
Video and key outputs from the frame store are routed to the
switcher crosspoint matrix and may be used as primary switcher
inputs. The video and key outputs are also routed to an output
module for use by external devices.
If the frame store is not in Freeze mode, its output is delayed by
2 fields from its input.
Still Image Storage
Video and key can be frozen either separately or simultaneously
through the use of panel controls. In addition, the system has
read-before-write capability, so stills can be layered in a recursive
manner. The system accomplishes this by sending the output of
the frame store to the input of an M/E for combination with
another image. A composite is generated that can be fed back to
the input of the frame store and re-frozen.
The Video Store and Key Store buttons select whether the Frame
Store Subpanel is assigned to the video channel or key channel.
One of these buttons is always lit. Video Store and Key Store may
be selected simultaneously.
Operations that can be independently set for video and key
channels are as follows:
■ Freeze
■ Grab
■ Field 1 and Field 2
Key
Store
Video
Store