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參數(shù)資料
| 型號： | SAA4998H |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Field and line rate converter with noise reduction and embedded memory |
| 中文描述： | 場和符合降噪和嵌入式存儲器率轉(zhuǎn)換器 |
| 文件頁數(shù)： | 14/39頁 |
| 文件大小： | 175K |
| 代理商： | SAA4998H |
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Zoom4
ZoomEnVal
01B
write; F
X X X X zoom run in value = number of lines without zoom active
(
0 to 15
lines)
zoom run out value = number of lines without zoom active
(
8 to +7
lines)
ZoomDiVal
X X X X
De-interlacer
Proscan1
KlfLim
01C
write; S
X X X X limitation of recursion factor in calculation of original line positions:
(
1 to 16
); 1 limits to almost full recursion, 16 limits to no recursion
The transfer curve of the de-interlacing filter coefficient is determined
by the difference (Diff) between a line in the input field and the
counterpart in the previous field shifted over the estimated motion
vector. KlfOfs determines the bias of the transfer curve for the original
input line, such that coefficient = KlfOfs + F(Diff), where the function F
is calculated in the SAA4998H. The bias can take a value in the range
(
0 to 15
), representing decreasing filter strength.
KlfOfs
X X X X
Proscan2
PlfLim
01D
write; S
X X X X limitation of recursion factor in calculation of interpolated line
positions: (
1 to 16
); 1 limits to almost full recursion, 16 limits to no
recursion
see KlfOfs; this offset applies to interpolated lines
PlfOfs
Proscan3
PeakLim
X X X X
01E
write; S
X X X X Maximum that the peaked pixel is allowed to deviate from original pixel
value: deviation (
0 to 30 in steps of 2
). Above this deviation, the
peaked pixel is clipped to (original pixel + or
PeakLim).
offset to bias between average and median in the initial de-interlacing,
if the KplFad = MIX option is chosen
DeiOfs
X X X X
NAME
SNERT
ADDRESS
(HEX)
READ/
WRITE
(1)
7
6
5
4
3
2
1
0
DESCRIPTION
(2)
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