PEDL87V21071-01
OKI Semiconductor
ML87V21071
2.3.4 Noise Convergence Level Setting
SUB_ADDRESS = 4Ch(W/R): Luminance noise convergence level setting
DATA_BIT
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
2
BIT1
1
BIT0
0
AYNS
YNS
Register name
1
0
5
4
3
SUB_ADDRESS = 4Dh(W/R): Chrominance noise convergence level setting
DATA_BIT
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
2
BIT1
1
BIT0
0
ACNS
CNS
Register name
1
0
5
4
3
YNS[5:0] Initial value: 01_1000; Setting range: 00_0000 to 11_1111
Sets luminance noise convergence level.
This setting can be used also for the adjacent motion compensation level.
The setting can be adjusted in 0 to 63 levels for differential data of luminance signal fields. The detected
noise level is limited to 1Fh as a result of combining the detection and convergence lines.
AYNS[1:0] Initial value: 00; Setting range: Refer to Table R2-3-4 (1).
Sets auto mode luminance noise convergence level.
Becomes valid in the auto mode noise follow-up state.
CNS[5:0] Initial value: 00_1111; Setting range: 00_0000 to 11_1111
Sets chrominance noise convergence level.
This setting can be used also for the adjacent motion compensation level.
The setting can be adjusted in 0 to 63 levels for differential data of the chrominance signal field. The
detected noise level is limited to 1Fh as a result of combining the detection and convergence lines.
ACNS[1:0] Initial value: 00; Setting range: Refer to Table R2-3-4 (2).
Sets auto mode chrominance noise convergence level.
Becomes valid in the noise follow-up state in the auto mode.
Field-recursive
detection noise A
Output
Inclination of noise detection lines
3/4 at YSLT[0], CSLT[0]=0
Non-noise detection region
31 (MAX)
Noise detection region
(Difference between
the fields)
Input
0
63 (MAX)
YNS[5:0],CNS[5:0]=0 to 63
Figure R2-3-4 Example of Noise Detection by the YNS and CNS Settings
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