FEDL87V2107-01
OKI Semiconductor
ML87V2107
2.3.2 Chrominance 2DLPF Noise Reduction
By setting CLPFON(SUB:64h-bit[3]) = 1, 2DLPF noise reduction on the chrominance data side can be achieved.
Chrominance 2DLPF noise reduction forms LPF with the surrounding 9 pixels centering on the target pixel and
achieves noise reduction.
The filter strength can be selected from two levels through CLPFM (SUB:65h-bit[4]).
This IC allows the setting of a compensation level of the edge section through the CED[4:0] (SUB:66h-bit[4:0])
level to prevent band deterioration of the edge section by LPF.
However, if edge compensation is enhanced, 2DLPF noise reduction deteriorates.
Table F2-3-2(1) Chrominance 2DLPF Noise Reduction ON/OFF Setting
CLPFON
Chrominance 2DLPF noise reduction
0
OFF
1
ON
Table F2-3-2(2) Chrominance 2DLPF Noise Reduction Setting
CLPFM
Chrominance 2DLPF noise
reduction filter
0
Filter weak
1
Filter strong
Table F2-3-2(3) Chrominance 2DLPF Noise Reduction Filter Edge Compensation Setting
CED[4:0]
Chrominance edge compensation
0
•
Edge compensation strong
•
•
•
•
•
1F
Edge compensation weak
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