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DFS-700/700P
Chapter 5 Control From Editing
Control Units
5-6
Chapter 5 Control From Editing Control Units
A/B Roll Editing
Signal flow
Signal flow in A/B roll editing
PGM OUT
VIDEO
INPUT
VIDEO
INPUT
Player VCR A
Recorder VCR
Background bus
video
DFS-700/700P
Player VCR B
Foreground bus
video
T1 signal
T2 signal
Control signal
Control signal
Control signal
BVE-600
Note
To improve editing accuracy, supply a reference sync signal to the BVE-600 and VCRs
from the BLACK BURST OUT connectors on the DFS-700/700P.
Control From the BVE-600
Chapter 5 Control From Editing
Control Units
Chapter 5 Control From Editing Control Units
5-7
Timing of the trigger (T1/T2) signals
The timing of the trigger signals output by the BVE-600 is as follows.
Timing of trigger signals in A/B roll editing
VCRs start
IN point Effect start point OUT point
VCRs stop
Player A
Player B
Recorder
T1
T2
PGM OUT
signal
Background bus image
Foreground bus image
Preroll
Effect
execution
(transition)
Postroll
A-roll period
B-roll period