Chapter 6
Frame Memory
6-2
The frame memory function, as its name suggests, captures a frame of video
input (whether movie or still), and holds it in memory for use in effects. In a
D2 system, it is also possible to carry out a field freeze, by use of Y/C
separation of the input signals.
It is also possible to use a mask to write only a part of a frame to memory, or
to combine a frame from memory with the input frame by a non-additive mix
(NAM) and write the result to memory.
Using the frame memory function requires both a BKDS-2041 Frame
Memory Board and a BKDS-7445 Frame Memory Adaptor Board. However,
in a component system, when a BKDS-7420 Color Correction Board is used,
the BKDS-7445 is not required.
Each pair of option boards provides memory for two frames, and these are
called frame memory 1 and frame memory 2.
Frame Memory Functions
The following are the principal frame memory functions, organized
according to the menu used.
In the following description, the term “input video” is used to refer to the
video being input to the frame memory, and “stored frame” to refer to the
frame already stored in the frame memory.
Manual mode
This mode is used for writing any of the following to memory. When the
(movie) input video is selected, the frame is frozen at the instant of writing to
memory.
• Input video
• Input video masked by a dedicated pattern
• Frame made by a NAM combination of the input video and stored frame
• Frame made by combination with a dedicated mask pattern of the input
video and stored frame.
Option
Overview
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