Panasonic EURO 4 Chassis, Technical Manual

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3DQDVRQLF
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Chapter 4 EURO 4D Supplement
5. Video Display Processor - VDP3120
Although the internal processing of VDP3120, IC601
has not changed, a full explanation of which can be
found in the EURO 4 Technical Guide
section 17, the
input and output processing paths have, these
changes being discussed in the following section.
A detailed explanation of the Video Switching Circuit
can be found in chapter 4 Section 9.
:
Pin 59 - Video Out
This output feeds either a video or the luminance
component of a S-VHS signal to the microprocessor
IC1101, as previously, it also feeds this video or
luminance signal to the video switching IC IC3401 pin
1.
:
Pin 60 - Cin
The chrominance signal inputs fed from the various
sources are firstly fed to the video switching IC
IC3401, discussed in chapter 4 section 9.2., from here
the chrominance signals are output from pin 13 of
IC3401 and fed to the VDP, IC601 pin 60.
:
Pin 61 - Vin1 (RFV)
This input, which is fed from the video switching IC
IC3401 pin 14, is fed either a video signal from the
tuner or the luminance signal from the DVB decoder
:
Pin 62 - Vin2 (AV1V)
This input is still fed the video signal fed from the 21
pin scart terminal AV1 pin 20 directly to pin 62.
:
Pin 63 - Vin3 (AV2V)
This input is still fed the video signal or the luminance
signal from the 21 pin scart terminal directly to pin 63
of the VDP.
:
Pin 64 - Vin4 (AV3V)
This input is still fed the video signal from the RCA
terminal or the luminance signal from the 4-pin S-VHS
terminal of AV3 directly to pin 64 of the VDP.
Colour
Decoder
PAL
NTSC
SECAM
2H
Adaptive
Comb
filter
Horizontal
Scaler
Panorama
Mode
Display
Processor
RGB Matrix
CLUT
Scan Veloc.
Sync. & Deflection
Measurement
ADC
Analogue
Backend
3*10bit DAC
Tube Control
RGB switch
I C
2
Clock Gen.
DCO
Analogue
Frontend
AGC
2*8bit ADC
VRT
Colour Bus
XREF
RGB/FB IN1
RGB/FB IN2
RGB Out
SVM
Sense H/V/EW
20.25MHz
CIN
VIN1
VIN2
VIN3
VIN4
VOUT
VDP3120B