4. rgb signal amplification section -12 – Toshiba TLP511E User Manual
Page 39
7-12
7-4. RGB Signal Amplification Section
7-4-1. RGB Signal Switch Circuit
The RGB input signals and the video signal demodu-
lated into RGB signals are switched by QB011 (Analog
SW: M52348FP). The block diagram of QB011 is shown
in Fig. 7-4-1.
7-4-2. Sync Signal Process Circuit
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1
2
3
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0.01µ
0.01µ
0.01µ
0.01µ
47µ
+
0.01µ
+
+
0.01µ
+
+
+
+
+
0.01µ
+
+
0.01µ
0.01µ
R
OUT
G
OUT
B
OUT
G
OUT (for Sync on G)
H
OUT
V
OUT
OUTPUT
R
IN
1
G
IN
1
B
IN
1
H
IN
1
V
IN
1
R
IN
2
G
IN
2
B
IN
2
H
IN
2
V
IN
2
RGB
input
Demodulation
VIDEO
RGB
High : Demodulation
Low : RGB input
Vcc
5V
VIDEO
HD (CS) and VD signals are also switched in the same
way as described above. This IC provides the exclusive
output terminal for SYNC/G.
The RGB signals developed enter the RGB amplification
circuit via buffers, and the HD (CS), VD, SYNC/G signals
enter the sync signal process circuit.
Fig. 7-4-1 Block diagram of M52348FP