- 您現在的位置：買賣IC網 > PDF目錄359412 > VPX322XE (MICRONAS SEMICONDUCTOR HOLDING AG) Video Pixel Decoders PDF資料下載
參數資料
| 型號： | VPX322XE |
| 廠商： | MICRONAS SEMICONDUCTOR HOLDING AG |
| 英文描述： | Video Pixel Decoders |
| 中文描述： | 視頻解碼器像素 |
| 文件頁數： | 16/92頁 |
| 文件大?。?/td> | 567K |
| 代理商： | VPX322XE |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁
ADVANCE INFORMATION
VPX 322xE
16
Micronas
2.6.1. Horizontal Resizer
The operating range of the horizontal resizer was cho-
sen to serve the widest possible range of applications
and source formats (number of lines, aspect ratio, etc...).
Table 2
–
2 lists several examples for video sourced from
525/625 line TV systems.
The horizontal resizer alters the sampling raster of the
video signal, thereby varying the number of pixels (NPix)
in the active portion of the video line. The number of pix-
els per line is selectable within a range from 32 to 864
in increments of 2 pixels (see section 2.11.: Windowing
the video field). Table 2
–
2 gives an overview of several
supported video rasters. The visual quality of a sampling
rate conversion operation depends on two factors:
–
the frequency response of the individual filters, and
–
the number of available filters from which to choose.
The VPX is equipped with a battery of FIR filters to cover
the five octave operating range of the resizer. Fig. 2
–
13
shows the magnitude response of five example filters
corresponding to 1054, 526, 262, 130, and 32 pixels.
The density of the filter array can be seen in Fig. 2
–
14.
The magnitude response of 50 filters lying next to each
other are shown. Nevertheless, these are only 10% of all
filters shown. As a whole, the VPX comes with a battery
of 512 FIR filters. Showing these 512 Filters in Fig. 2
–
13
would result in a large black area. This dense array of fil-
ters is necessary in order to maintain constant visual
quality over the range of allowable picture sizes. The al-
ternative would be to use a small number of filters whose
cutoff frequencies are regularly spaced over the spec-
trum. However, it has been found that using few filters
leads to visually annoying threshold behavior. These ef-
fects occur when the filters are changed in response to
variations in the picture size.
Filter selection is performed automatically by the internal
processor based on the selected resizing factor (NPix).
This automated selection is optimized for best visual
performance.
dB
Fig. 2
–
13:
Freq. response of 5 widely spaced filters
0
–
10
–
20
–
30
–
40
MHz
0
10
20
30
40
Fig. 2
–
14:
Freq. response of 50 adjacent filters
0
–
4
–
6
–
8
–
10
MHz
0
0.5
1.5
2
3
–
2
–
12
1
2.5
dB
相關PDF資料 |
PDF描述 |
|---|---|
| VQ1000J | N-Channel Enhancement-Mode MOSFET Transistor(最小漏源擊穿電壓60V,夾斷電流0.225A的N溝道增強型MOSFET晶體管) |
| VQ1000J | N-Channel 60-V (D-S) MOSFET |
| VQ1001J | Dual N-Channel 30-V (D-S) MOSFET with Schottky Diode |
| VQ1001J | N-Channel Enhancement-Mode MOSFET Transistor(最小漏源擊穿電壓30V，夾斷電流0.83A的N溝道增強型MOSFET) |
| VQ1004J | N-Channel Enhancement-Mode MOSFET Transistor(最小漏源擊穿電壓60V,夾斷電流0.46A的N溝道增強型MOSFET晶體管) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| VPX3478 | 制造商:CPI 制造商全稱:CPI 功能描述:X-Band Transmitter |
| VPX60-61ZRZ-DA100-XXP1 | 制造商:Carling Technologies 功能描述:V-SERIES ILLUMINATED PLUG - Bulk |
| VPX641U025E1L1C | 制造商:Mallory 功能描述:RL764X025 |
| VPX66-611KR-00000-XWL1 | 制造商:Carling Technologies 功能描述:V-SERIES ILLUMINATED PLUG - Bulk |
| VPX66-611XR-CS1Y3-XXP2 | 制造商:Carling Technologies 功能描述:V-SERIES ILLUMINATED PLUG - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。