26)
VIDEO CONTROL
Function:
Video switch is turned ON/OFF.
Format:
Integer
V D
Explanation:
The Video Control Register is reset.
The initial value of the register is 1 (the video switch is ON). In
this state, the video output is controlled by means of the squelch
switch. When in
Park
or
Pause Mode
, the switch is set to 1.
When pictures are reproducible, the squelch condition is not
active.
When the video switch is turned OFF, the screen is squelched at
all times.
The squelch condition may be set to show a blue screen or a black
screen by using the background color selection in Register C.
Also, sync insert can be add or deleted by using the Flag Bit of
Register H.
Execution:
* Video Switch = ON
O V D <C/R>
R <C/R>
* Video Switch = OFF
Chapter Four • LD-V8000 Level I & III
Integer
Function
Video Switch
0
Off
0
1
On (Normal)
1
4-28
TP 113 v. 2.1 • 2/93
LD-V8000 Level I & III User’s Manual
VIDEO CONTROL
Video Control Diagram
Figure 4-L
o o
o o
Squelch
Video Control
Squelch Switch
Video Switch
Video
Demodulator
Video Out