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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(yè)數(shù)： | 11/76頁(yè) |
| 文件大?。?/td> | 1770K |
| 代理商： | VDP3130Y |
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ADVANCE INFORMATION
VDP 313xY
Micronas
11
2.4.7. Automatic standard recognition
The burst-frequency measurement is also used for
automatic standard recognition (together with the sta-
tus of horizontal and vertical locking) thus allowing a
completely independent search of the line and color
standard of the input signal. The following standards
can be distinguished:
–
PAL B,G,H,I
–
NTSC M
–
SECAM
–
NTSC 44
–
PAL M
–
PAL N
–
PAL 60
For a preselection of allowed standards, the recogni-
tion can be enabled/disabled via I
2
C bus for each stan-
dard separately.
If at least one standard is enabled, the VDP 313xY
checks regularly the horizontal and vertical locking of
the input signal and the state of the color killer. If an
error exists for several adjacent fields a new standard
search is started. Depending on the measured line
number and burst frequency the current standard is
selected.
For error handling the recognition algorithm delivers
the following status information:
–
search active (busy)
–
search terminated, but failed
–
found standard is disabled
–
vertical standard invalid
–
no color found
–
standard switched
2.4.8. PAL Compensation/1-H Comb Filter
The color decoder uses one fully integrated delay line.
Only active video is stored.
The delay line application depends on the color stan-
dard:
–
NTSC:
1-H comb filter
or
color compensation
–
PAL:
color compensation
–
SECAM: crossover-switch
In the NTSC compensated mode, Fig. 2
–
5 c), the color
signal is averaged for two adjacent lines. Thus,
cross-color distortion and chrominance noise is
reduced. In the NTSC combfilter mode, Fig. 2
–
5 d), the
delay line is in the composite signal path, thus allowing
reduction of cross-color components, as well as
cross-luminance. The loss of vertical resolution in the
luminance channel is compensated by adding the ver-
tical detail signal with removed color information. If the
2-H adaptive comb filter is used, then the 1-H NTSC
comb filter should not be used.
Fig. 2
–
5:
NTSC color decoding options
chroma
8
CVBS
Y
8
CVBS
Y
8
Luma
Y
8
C
R
C
B
8
CVBS
Y
d) comb filter
c) compensated
a) conventional
b) S-VHS
C
R
C
B
C
R
C
B
C
R
C
B
Chroma
Process.
Notch
filter
Chroma
Process.
Notch
filter
Chroma
Process.
Chroma
Process.
Notch
filter
1H
Delay
1H
Delay
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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