PEDL87V21071-01
OKI Semiconductor
ML87V21071
2.3.2 Noise Reduction Auto Mode Setting
SUB_ADDRESS = 49h(W/R): Noise reduction auto mode setting
DATA_BIT
BIT7
BIT6
BIT5
BIT4
BIT3
AMM
BIT2
BIT1
BIT0
Register name
PNON
NDTC
NRDTF
PODT
ACY NRDTON NRAUTO
NRAUTO Initial value: 0; Setting range: 0 to 1
Sets noise reduction auto mode.
When NRAUTO = 1, the noise reduction setting can be performed based on the noise state detected at
NRDTON = 1.
Table R2-3-2 (1) Auto Level Setting Mode Setting
NRAUTO
Noise reduction mode
Register fixed mode
Auto mode
0
1
NRDTON Initial value: 0; Setting range: 0 to 1
Sets On/Off of noise detection.
When NRDTON = 1, performs noise detection on areas set by NRDTF, NRDTP[3:0], NDTC and PNON.
The average and maximum detected noise values are updated every frame.
Table R2-3-2 (2) Noise Detection On/Off Setting
NRDTON
Noise detection
Stop (Hold)
0
1
Updated every frame
ACY Initial value: 0; Setting range: 0 to 1
Sets chrominance noise detection flag mode.
When ACY = 1, masking for the chrominance noise detection flags (CDTO1, CDTO2) is performed by
luminance noise detection flags (YDTO1, YDTO2). Holds the noise detection flag to “0” even if the
chrominance noise detection value has exceeded the setting level as far as the luminance noise detection
value does not exceed the setting value.
Table R2-3-2(3) Chrominance Noise Detection Flag Mode Setting
ACY
Chrominance noise detection flag mode
Chrominance independent
Luminance linked
0
1
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