SAA4992H Datasheet, PDF (16/36 Pages) NXP Semiconductors – Field and line rate converter with noise reduction

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NAME
De-interlacer
Proscan1
KlfLim
KlfOfs
Proscan2
PlfLim
PlfOfs
Proscan3
PeakLim
PenInd
SNERT
ADDRESS
HEX
READ/
WRITE⁽¹⁾
7
6
5
4
3
2
1
0
DESCRIPTION⁽²⁾
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
XXXX
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 SAA4992H. The bias can take a value in the range
(0 to 15), representing decreasing filter strength.
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
XXXX
see KlfOfs; this offset applies to interpolated lines
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).
XXXX
index to PenMed table (−256, −128, −64, −32, −16, −8, −4, 0, 4, 8, 16,
24, 32, 64, 128 or 255); penalty for applying (vertical/temporal)
median, in favour of applying vertical average within new field