NEC PX-50XM4 series Service Manual page 518

(4) When Sub is for PC signal (RGB3 (DVI)) input
 Block operation diagram: Red lines show the flow
VIDEO1 Video SW
(BNC)
VIDEO2
(RCA)
VIDEO3
(S)
DVD/HD1
(3RCA)
Video/sync
RGB2/
DVD/HD2
(5BNC)
RGB1
(D-Sub)
RGB3 TMDS
(DVI) Receiver
of Main signals. Blue lines indicate the Sub signals and green lines show the flow of synthesized signals.
Video chroma
Decoder
LPF1
Out1
SW
LPF2
Out2
CPU
A/D1 Digital signal
Processing block
I-P converter
Scaling
γ correction
Double picture processing
A/D2
CONFIDENTIAL
LVDS
Transmitter
To Module
: Analog signal line
: Digital signal line
: Control signal line
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