FS450 ETC2 [List of Unclassifed Manufacturers], FS450 Datasheet - Page 32

• Manufacturer Part Number: FS450
• Description: i-Net TV Interface Video Processor
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

Notes:
In addition to the variable vertical settings, the FS450 flicker filter has a sharpness function. This function is a two
FS450, FS451
6.2.12 SHP, FLK - Sharpness and Flicker Filter
Sharpness Low (24)
Sharpness High (25)
Reg
24
Range: {0 : 31} Provides 0 to 31/16 (6 dB) joint high horizontal and vertical frequency boost.
Flicker Filter Coefficient Low (26)
Flicker Filter Coefficient Low (27)
Reg
26
Range: {0 : 23}
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.
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.
JUNE, 2000, VERSION 1.2
7
0
7
0
7
0
7
0
Bit#
4-0
Bit#
4-0
6
0
6
0
6
0
6
0
Bit Name
SHP
Bit Name
FLK
4-0
4-0
5
0
5
0
5
0
5
0
Description
Flicker Filter Sharpness [4-0]. SHP accentuates the joint high
vertical - high horizontal frequencies to sharpen edges. SHP is an
unsigned number.
Description
Flicker Filter Coefficient [4:0]. Provides weighting factor for 3
line flicker filter. FLK is an unsigned number.
SHP
FLK
4
4
0
4
4
0
4
4
32
SHP
COPYRIGHT
FLK
3
3
0
3
3
0
3
3
1999, 2000 FOCUS ENHANCEMENTS, INC.
SHP
FLK
PRELIMINARY PRODUCT DESCRIPTION
2
2
0
2
2
0
2
2
PRELIMINARY INFORM ATION
SHP
FLK
1
1
0
1
1
0
1
1
SHP
FLK
0
0
0
0
0
0
0
0