ASAHI KASEI
[AK8817/18]
(7) Luminance Signal Filter ( Luma Filter )
Luminance signal is output via LPF ( see x2 Luma Filter in the block diagram ).
10
0
-10
-20
-30
-40
-50
frequency[MHz]
(8) Chroma Signal Filter ( Chroma Filter )
Chroma input signal components ( Cb, Cr ) prior to the modulation go through a 1.3 MHz Band Limiting Filter
( see 4:2:2 to 4:4:4 x2 interpolator in the block diagram ).
Chroma signal which is modulated by the sub-carrier is output via a low pass filter ( Chroma LPF in the block diagram ).
Frequency response of each filter is shown below.
4:2:2 to 4:4:4 Interpolator Filter
10
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
-10
-20
-30
-40
-50
Frequency[MHz]
x 2 Interpolator Filter
10
0
-10
-20
-30
-40
-50
frequency[MHz]
Rev.001E
20
2009 / 12
AKM [ ASAHI KASEI MICROSYSTEMS ]
