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FS401 Arkusz danych(PDF) 35 Page - List of Unclassifed Manufacturers

Numer części FS401
Szczegółowy opis  PC to TV Video Scan Converters
PDF  104 Pages
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Producent  ETC2 [List of Unclassifed Manufacturers]
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FS401 Arkusz danych(HTML) 35 Page - List of Unclassifed Manufacturers

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FS401, FS403
PRODUCT SPECIFICATION
REV. NO. 1.7
35
JANUARY 24, 2007
COPYRIGHT
© 1999 FOCUS ENHANCEMENTS, INC.
4.5.8 VSC – Vertical Scaling Coefficient
Vertical Scaling Coefficient (E)
7
6
5
4
3
2
1
0
VSC7
VSC6
VSC5
VSC4
VSC3
VSC2
VSC1
VSC0
Vertical Scaling Coefficient (F)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
Register
Bit#
Bit Name
Description
E
7-0
VSC7-0
Vertical scaling coefficient bits [7:0], m. Vertical scaling factor
= (1 - m/ 256). m is the line reduction number modulo 256 due to
vertical filtering.
F
-
-
Load. Writing to register F activates register E data.
Range: {0:[192]}
Restrictions:
1.
At all times:
2.
NTSC :
ILS + OVO < 259
3.
PAL:
ILS + OVO < 310
Example: 480 line VGA image mapped to 400 line image.
VSC = (1-(400/480))*256 = 42.667
Use 42 for the Coefficient value
⎟
⎟
⎟
⎟
⎠
⎞
⎜
⎜
⎜
⎜
⎝
⎛
−
−
<
64
1
1
*
2
1
VSC
IVC
ILS



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