PEDL87V21071-01
OKI Semiconductor
ML87V21071
2.3.3 Automatic Setting of Edge-Adaptive 2D Noise Reduction
By setting AYLPF[2:1](SUB:65h-bit[7:6]) and ACLPF[2:1](SUB:66h-bit[7:6]) in the I2C-bus interface, the
edge-adaptive 2D noise reduction ON/OFF can be set using the noise checking flag (YDTO1, YDTO2, CDTO1,
CDTO2).
When using the automatic ON/OFF function, set YLPFON = 0 and CLPFON = 0.
By setting AYED (SUB:65h-bit[5]) and ACED (SUB:66h-bit[5]), it is possible to allow the edge adaptive level to
follow the noise level.
Table F2-3-3(1) Luminance Edge-Adaptive 2D Noise Reduction Auto ON/OFF Setting
AYLPF
Luminance
edge-adaptive
2D NR
YDTO1
YDTO2
[2]
[1]
0
0
X
0
1
1
0
1
1
X
0
0
1
0
0
1
OFF
OFF
ON
0
1
0
ON
OFF
OFF
ON
1
Table F2-3-3(2) Chrominance Edge-Adaptive 2D Noise Reduction Auto ON/OFF Setting
ACLPF
Chrominance
edge-adaptive
2D NR
CDTO1
CDTO2
[2]
[1]
0
0
X
0
1
1
0
1
1
X
0
0
1
0
0
1
OFF
OFF
ON
0
1
0
ON
OFF
OFF
ON
1
2.3.4 Edge-Adaptive 2D Noise Reduction Demo Board
By setting ODEMO[1:0](SUB:64h-bit[7:6]) in the I2C-bus interface, the edge-adaptive 2D noise reduction
function can be checked as a demonstration mode by splitting the screen as shown in Figure F2-3-3.
Table F2-3-4 ODEMO Setting
ODEMO
Left side of screen
Right side of screen
[1]
0
[0]
0
YLPFON, CLPFON setting
Edge-adaptive 2D OFF
Normal edge-adaptive 2D
YLPFON, CLPFON setting
YLPFON, CLPFON setting
YLPFON, CLPFON setting
0
1
1
0
Left side area of
screen
Right side area of
screen
Figure F2-3-3 Edge-Adaptive 2D Noise Reduction Demo Screen
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