Video Display Processor (Vdp) - Panasonic EURO 4 Chassis Technical Manual

Chapter
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
VRT
CIN
Analogue
VIN1
Frontend
VIN2
VIN3
VIN4
AGC
2*8bit ADC
VOUT
20.25MHz
Clock Gen.
DCO
4
2H
Adaptive
Comb
filter
VDP3120B
2
I C
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.
Horizontal
Colour
Scaler
Decoder
PAL
Panorama
NTSC
Mode
SECAM
Sync. & Deflection
H/V/EW
67
EURO 4D Supplement
Colour Bus
XREF
Display
Analogue
Processor
Backend
RGB Matrix
CLUT 3*10bit DAC
Scan Veloc. Tube Control
RGB switch
Measurement
ADC
Sense
3DQDVRQLF
RGB/FB IN1
RGB/FB IN2
RGB Out
SVM