TDA9178T Philips Semiconductors, TDA9178T Datasheet - Page 12

• Manufacturer Part Number: TDA9178T
• Description: YUV one chip picture improvement based on luminance vector-/ colour vector- and spectral processor
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Input signals
Table 1 Amplitude mode selection
Table 2 Luminance determined histogram
Table 3 Contour filter selection
Table 4 Line frequency selection
Table 5 Window letterbox format
Table 6 Video dependent coring on/off
Table 7 Demonstration mode on/off
1999 Sep 24
YUV one chip picture improvement based on luminance
vector-, colour vector- and spectral processor
WLB
AMS
DEM
LDH
VDC
CFS
FHS
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0.315 V luminance (black to white) at
YIN
1.0 V luminance (black to white) at YIN
histogram segments fixed
histogram segments determined by peak
white
peaking frequency is 2 MHz at 1f
4 MHz at 2f
peaking frequency is 3 MHz at 1f
6 MHz at 2f
1f
2f
normal internal window format
‘Letterbox’ internal window format
video dependent coring off
video dependent coring on
DEMO off
DEMO on: auto-toggle selected features
on/off (cycle is 10 s at 1f
H
H
H
H
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
H
or 5 s at 2f
H
H
or
or
H
)
12
Table 8 Chrominance delay
Table 9 Overrule smart peaking
Table 10 White-point stretch on/off
Table 11 Dynamic skin tone on/off
Table 12 Dynamic skin tone angle
Table 13 Dynamic skin tone width
Table 14 Dynamic skin tone size
Table 15 Green enhancement on/off
CD2
0
1
WPO
WSK
DGR
OSP
DSK
ASK
SSK
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CD1
0
1
smart peaking (maximum peaking
reduced if Coxing)
overrule smart peaking
white-point stretch on
white-point stretch off
skin tone off
skin tone on
angle correction 123
angle correction 117
default detection angle
60% increased detection angle
default area
40% increased area
green enhancement off
green enhancement on
CD0
0
1
40 ns at 1f
32 ns at 1f
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
Preliminary specification
H
FUNCTION
H
or 20 ns at 2f
or +16 ns at 2f
TDA9178
H
H