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參數(shù)資料
| 型號(hào)： | 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)： | 9/76頁 |
| 文件大?。?/td> | 1770K |
| 代理商： | VDP3130Y |
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ADVANCE INFORMATION
VDP 313xY
Micronas
9
2.4. Color Decoder
In this block, the standard luminance/chrominance
(luma/chroma) separation and multistandard color
demodulation is carried out. The color demodulation
uses an asynchronous clock, thus allowing a unified
architecture for all color standards.
A block diagram of the color decoder is shown in
Fig. 2
–
3. The luminance as well as the chrominance
processing, is shown here. The color decoder provides
also some special modes, e.g. wide band chrominance
format which is intended for S-VHS wide bandwidth
chrominance.
If the adaptive comb filter is used for luminance/
chrominance separation, the color decoder uses the
S-VHS mode processing. The output of the color
decoder is YC
R
C
B
in a 4:2:2 format.
2.4.1. IF-Compensation
With off-air or mistuned reception, any attenuation at
higher frequencies or asymmetry around the color
subcarrier is compensated. Four different settings of
the IF-compensation are possible:
–
flat (no compensation)
–
6 dB/octave
–
12 dB/octave
–
10 dB/MHz
The last setting gives a very large boost to high fre-
quencies. It is provided for SECAM signals that are
decoded using a SAW filter specified originally for the
PAL standard.
Fig. 2
–
2:
Frequency response of chrominance IF-com-
pensation
Fig. 2
–
3:
Color decoder
ColorPLL/ColorACC
1 H Delay
M
M
CrossSwitch
Notch
Filter
Luma / CVBS
Luma
Chroma
Mixer
Lowpass Filter
Phase/Freq
Demodulator
ACC
Chroma
IF Compensation
DC-Reject
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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