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參數(shù)資料
| 型號： | VDP3130Y |
| 廠商： | MICRONAS SEMICONDUCTOR HOLDING AG |
| 英文描述： | Video Processor Family |
| 中文描述： | 視頻處理器系列 |
| 文件頁數(shù)： | 16/76頁 |
| 文件大?。?/td> | 1770K |
| 代理商： | VDP3130Y |
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VDP 313xY
ADVANCE INFORMATION
16
Micronas
2.10.3.Dynamic Peaking
Especially with decoded composite signals and notch
filter luminance separation, as input signals, it is nec-
essary to improve the luminance frequency character-
istics. With transparent, high-bandwidth signals, it is
sometimes desirable to soften the image.
In the VDP 313xY, the luminance response is
improved by dynamic peaking. The algorithm has been
optimized regarding step and frequency response. It
adapts to the amplitude of the high frequency part.
Small AC amplitudes are processed, while large AC
amplitudes stay nearly unmodified.
The dynamic range can be adjusted from
14 to
+
14 dB for small high frequency signals. There is sep-
arate adjustment for signal overshoot and for signal
undershoot. For large signals, the dynamic range is
limited by a non-linear function that does not create
any visible alias components. The peaking can be
switched over to
“
softening
”
by inverting the peaking
term by software.
The center frequency of the peaking filter is switchable
from 2.5 MHz to 3.2 MHz. For S-VHS and notch filter
color decoding, the total system frequency responses
for both PAL and NTSC are shown in Fig. 2
–
13.
Transients, produced by the dynamic peaking when
switching to the picture frame can be suppressed
optionally
Fig. 2
–
12:
Dynamic peaking frequency response
Fig. 2
–
13:
Total frequency response for peaking filter and S-VHS, PAL, NTSC
dB
MHz
20
5
–
5
–
10
–
15
–
20
0
2
4
6
8
10
15
10
0
dB
MHz
20
15
10
5
5
10
15
20
0
dB
2
4
6
8
10
0
dB
MHz
20
15
10
5
5
10
15
20
0
dB
2
4
6
8
10
0
MHz
20
15
10
5
5
10
15
20
0
dB
2
4
6
8
10
0
MHz
20
15
10
5
5
10
15
20
0
2
4
6
8
10
0
dB
MHz
20
15
10
5
5
10
15
20
0
2
4
6
8
10
0
MHz
20
15
10
5
5
10
15
20
0
2
4
6
8
10
0
CF=2.5 MHz
CF=2.5 MHz
CF=2.5 MHz
CF=3.2 MHz
CF=3.2 MHz
CF=3.2 MHz
NTSC
PAL/SECAM
S-VHS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VDP31XXB | Video Processor Family |
| VDP3108PR | Consumer IC |
| VDSGLD_38.88 | TRANS PREBIASED PNP 200MW SOT23 |
| VDSL5100I | TVS 400W 43V UNIDIRECT SMA |
| VDSL5100 | TVS 400W 40V BIDIRECT SMA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VDP3131Y | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Processor Family |
| VDP3132Y | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Processor Family |
| VDP3133Y | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Processor Family |
| VDP3134Y | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Processor Family |
| VDP313XY | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Processor Family |
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