ml87v2105 Oki Semiconductor, ml87v2105 Datasheet - Page 77

• Manufacturer Part Number: ml87v2105
• Description: Video Signal Noise Reduction Ic With A Built-in 5.6 Mbit Frame Memory
• Manufacturer: Oki Semiconductor

OKI Semiconductor
2.3.4 Noise convergence level setting
31 (MAX)
SUB_ADDRESS = 4Ch(W/R): Luminance noise convergence level setting
SUB_ADDRESS = 4Dh(W/R): Color difference noise convergence level setting
detection noise A
YNS[5:0] Initial value: 01_1000; Setting range: 00_0000 to 11_1111
AYNS[1:0] Initial value: 00; Setting range: Refer to Table R2-3-4 (1).
CNS[5:0] Initial value: 00_1111; Setting range: 00_0000 to 11_1111
ACNS[1:0] Initial value: 00; Setting range: Refer to Table R2-3-4 (2).
Field-recursive
Register name
Register name
DATA_BIT
DATA_BIT
Output
0
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.
Sets auto mode luminance noise convergence level.
Becomes valid in the auto mode noise follow-up state.
Sets color difference 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 color difference signal field. The
detected noise level is limited to 1Fh as a result of combining the detection and convergence lines.
Sets auto mode color difference noise convergence level.
Becomes valid in the noise follow-up state in the auto mode.
Inclination of noise detection lines
Figure R2-3-4 Example of Noise Detection by the YNS and CNS Settings
3/4 at YSLT[0], CSLT[0]=0
BIT7
BIT7
1
1
AYNS
ACNS
BIT6
BIT6
0
0
Noise detection region
YNS[5:0],CNS[5:0]=0 to 63
BIT5
BIT5
5
5
Non-noise detection region
BIT4
BIT4
4
4
BIT3
BIT3
3
3
CNS
YNS
BIT2
BIT2
2
2
BIT1
BIT1
63 (MAX)
1
1
PEDL87V2105-02
(Difference between
ML87V2105
the fields)
BIT0
BIT0
Input
0
0
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