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參數(shù)資料
| 型號(hào)： | FS451 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | i-Net TV Interface Video Processor |
| 中文描述： | 一至網(wǎng)絡(luò)電視接口視頻處理器 |
| 文件頁數(shù)： | 32/60頁 |
| 文件大小： | 266K |
| 代理商： | FS451 |
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FS450, FS451
PRELIMINARY PRODUCT DESCRIPTION
JUNE, 2000, VERSION 1.2
32
COPYRIGHT
ó
1999, 2000 FOCUS ENHANCEMENTS, INC.
PRELIMINARY INFORMATION
6.2.12 SHP, FLK - Sharpness and Flicker Filter
Sharpness Low (24)
7
6
5
4
3
2
1
0
0
0
0
SHP
4
SHP
3
SHP
2
SHP
1
SHP
0
Sharpness High (25)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
Reg
Bit#
Bit Name
Description
24
4-0
SHP
4-0
Flicker Filter Sharpness [4-0].
SHP accentuates the joint high
vertical - high horizontal frequencies to sharpen edges. SHP is an
unsigned number.
Range:
{0 : 31} Provides 0 to 31/16 (6 dB) joint high horizontal and vertical frequency boost.
Flicker Filter Coefficient Low (26)
7
6
5
4
3
2
1
0
0
0
0
FLK
4
FLK
3
FLK
2
FLK
1
FLK
0
Flicker Filter Coefficient Low (27)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
Reg
Bit#
Bit Name
Description
26
4-0
FLK
4-0
Flicker Filter Coefficient [4:0].
Provides weighting factor for 3
line flicker filter. FLK is an unsigned number.
Range:
{0 : 23}
Notes:
The FS450 Flicker Filter is more complex than a Three Line Average (TLA) flicker filter. The FS450 flicker filter
includes a variable vertical filter response in addition to a sharpness function. Adjusting the FLK Coefficient
modifies the vertical filter from no filtering (FLK = 0) to a Three Line Average (FLK = 16), giving the user the best
choice in filtering options.
In addition to the variable vertical settings, the FS450 flicker filter has a sharpness function. This function is a two
dimensional peaking function which accentuates the joint high vertical - high horizontal spatial frequencies (an
"edge enhancer"). The three line variable two dimensional flicker filter is formed by summing the unit impulse
function with a vertical flicker function scaled by FLK (Flicker Coefficient) and the peaking function which is scaled
by SHP (Sharpness Coefficient). The FLK and SHP variables have 5 bits of resolutions, with a usable a range
from 0 to 16/16 for FLK, and 0 to 31/16 for SHP.
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