XV-C1
E
l
Gamma correction and peak limiter
The LCD panels have the output
characteristics shown at right.
The curve’s variation points can be
arranged by using pins
(44),
(45)
and (46).
output
Input
l
Inversion
The
primary-colour
outputs at pins
(32),
(34) and (36) are inverted according to the FRP pulse being inputted
to pin (39). When the pin (40) is at the VCC potential, the input, output and inverted pulse are in the relation-
ship shown below.
VIDEO input
FRP input
-
-
R.G.B
output
‘i
Tl-
r
l
Primary-colour output
The push-pull system is employed in order to drive a capacity load, A feedback is made to keep the output
signal’s center voltage at (VCC+VEE)/2. This is to prevent DC components from getting superimposed and to
avoid adverse effect on the LCD panels.
28
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