
1999 Sep 24
26
Philips Semiconductors
Preliminary specication
YUV one chip picture improvement based on luminance
vector-, colour vector- and spectral processor
TDA9178
Fig.11 Block diagram of the step improvement processor.
handbook, full pagewidth
MGR905
MINMAX
SELECTOR
MINMAX
Yenvelope
Ystep
CLAMPS
FADER
line width
control
DELAY
Yin
Fig.12 Response signals for maximum step improvement, no peaking and nominal line width.
handbook, halfpage
0
0.5
1000
800
200
0
400
600
MGR906
1.0
1.5
2.0
t (
s)
(1)
(2)
Vo
(mV)
(1) 90% of nominal amplitude.
(2) 30% of nominal amplitude.