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參數(shù)資料
| 型號： | GF9331-CBP |
| 廠商： | Gennum Corporation |
| 英文描述： | DTV/SDTV Motion Co-processor |
| 中文描述： | 數(shù)字電視/標清運動協(xié)處理器 |
| 文件頁數(shù)： | 28/31頁 |
| 文件大?。?/td> | 337K |
| 代理商： | GF9331-CBP |
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GF9331 Data Sheet
Proprietary and Confidential
18303 - 4
June 2004
28 of 31
3.10 Vertical Motion Detection
The GF9331 detects objects moving in the vertical direction (e.g. rolling credits).
By performing motion detection, a special vertical filter may be enabled within the
GF9331 for interpolating the pixels with vertical motion, thereby reducing slow
motion de-interlacing artifacts. This vertical motion detection signal is provided to
the GF9330 through the control bus (FIL_SEL[3:0]).
3.10.1 Vertical Motion Feature Control
The GF9331 is able to operate in automatic or disabled mode for vertical motion
detection of the video input stream. When set to operate in disabled mode
(VM_MODE=0 or VM_CTL=0), the internal vertical motion detection circuitry is
disabled. When set to operate in automatic mode (VM_MODE=1 or VM_CTL=1)
the GF9331 internally detects vertical motion. See
Table 3-8: Vertical Motion
Control
.
.
3.11 Edge Direction Detection
In order to reduce the edge artifacts caused by the de-interlacing process, pixel
gradients are analysed calculated along different edge directions. The analysis is
based on several complex techniques including vertical-temporal filtering, gradient
and morphological operations. Edge interpolation filters in the GF9330 are enabled
based on the edge information provided by the GF9331 through the FIL_SEL[3:0]
control bus.
Table 3-8: Vertical Motion Control
External VM_MODE Pin
Host Interface VM_CTL Bit
Description
0
0
Vertical Motion Detection Disabled
0
1
Vertical Motion Detection Enabled
1
0
1
1
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