ml87v2105 Oki Semiconductor, ml87v2105 Datasheet - Page 33

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

OKI Semiconductor
This feature performs motion compensation for the detected noise using the motion compensation flag
CMA[4:0].
As the method of motion compensation , the reduction mode (CNRM = 0) or the noise 0 mode (CNRM = 1) can
be selected by CNRM (SUB:4Bh-bit[0]).
In the reduction mode, the normal reduction mode (CABN = 0) or the absolute noise reduction mode (CABN =
1) can be selected by CABN (SUB:4Bh-bit[2]).
Table F1-3-4 (5) Color Difference Normal Reduction Mode Noise Reduction Coefficients
Color Difference Signal Noise Motion Compensation
CNRM
Table F1-3-4 (4) Color Difference Motion Compensation Mode
X
0
0
1
[4]
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
Table F1-3-4 (3) Noise Reduction Coefficients
CABN
[3]
0
0
0
0
0
0
1
1
X
X
0
1
[3]
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
[2]
0
0
0
0
1
1
1
1
YMA
CMA
Absolute noise reduction
Motion compensation
[2]
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
Normal reduction
[1]
0
0
1
1
1
1
1
1
[1]
Noise 0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
mode
None
[0]
0
1
0
1
0
1
0
1
[0]
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
YABN = 0
Reduction coefficient
1/16
1/2
1/2
1/4
1/4
1/8
1/8
1
CABN=0
Reduction coefficient
1/16
1/16
1/16
1/2
1/2
1/4
1/2
1/4
1/4
1/8
1/4
1/8
1/8
1/8
1
0
(Reduction coefficient)
(Reduction coefficient)
Detected noise as is
(Detected noise) x
(Detected noise) x
YABN = 1
Noise 0 judgment
17/32
9/16
9/16
3/4
3/4
5/8
5/8
1
(NROFF)
Remarks
CABN=1
17/32
17/32
17/32
9/16
9/16
9/16
9/16
3/4
3/4
5/8
3/4
5/8
5/8
5/8
1/2
1
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