saa4998h NXP Semiconductors, saa4998h Datasheet - Page 14

• Manufacturer Part Number: saa4998h
• Description: Field And Line Rate Converter With Noise Reduction And Embedded Memory
• Manufacturer: NXP Semiconductors

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Zoom4
De-interlacer
Proscan1
Proscan2
Proscan3
ZoomEnVal
ZoomDiVal
KlfLim
KlfOfs
PlfLim
PlfOfs
PeakLim
DeiOfs
NAME
01B
01C
01D
01E
ADDRESS
SNERT
(HEX)
write; F
write; S
write; S
write; S
WRITE
READ/
(1)
X X X X
X X X X
X X X X
X X X X
7 6 5 4 3 2 1 0
X X X X zoom run in value = number of lines without zoom active
X X X X limitation of recursion factor in calculation of original line positions:
X X X X limitation of recursion factor in calculation of interpolated line
X X X X Maximum that the peaked pixel is allowed to deviate from original pixel
(0 to 15 lines)
zoom run out value = number of lines without zoom active
( 8 to +7 lines)
(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.
positions: (1 to 16); 1 limits to almost full recursion, 16 limits to no
recursion
see KlfOfs; this offset applies to interpolated lines
value: deviation (0 to 30 in steps of 2). Above this deviation, the
peaked pixel is clipped to (original pixel + or
offset to bias between average and median in the initial de-interlacing,
if the KplFad = MIX option is chosen
DESCRIPTION
(2)
PeakLim).