ml87v21071 Oki Semiconductor, ml87v21071 Datasheet - Page 49

• Manufacturer Part Number: ml87v21071
• Description: Video Signal Noise Reduction Ic With A Built-in Frame Memory
• Manufacturer: Oki Semiconductor

OKI Semiconductor
NRAUTO
0
1
1
1
1
4 frames continuous
low noise level
Noise reduction
YBDTO
CBDTO
OFF
noise level detection
X
0
0
1
1
Valid data period
Noise level
judgment
4 frames continuous
Figure F2-1-8 (1) Auto Mode Judgment Flow (AMM = 0)
low noise level
CDTO1
YDTO1
(with upper limit)
Noise follow-up
noise reduction
X
X
X
0
1
medium/high noise level
4 frames continuous
Table F2-1-8 (1) Auto Mode (AMM = 0)
Blanking period noise
level detection
CDTO2
YDTO2
judgment
X
X
X
0
1
Noise
medium noise
continuous
4 frames
noise reduction
Fixed value
(Noise high follow-up status)
Auto mode (NROFF status)
(Noise low follow-up status)
medium/high noise level
Register fixed value mode
4 frames continuous
Noise reduction mode
(Fixed register status)
4 frames continuous
Maximum motion
With upper limit
Blanking period
With lower limit
low noise level
(Noise status)
compensation
comparison
Noise level
Auto mode
Auto mode
Auto mode
Valid data period
(with lower limit)
noise reduction
noise follow-up
continuous high
noise level
Valid data period noise
4 frames
level detection
comparison
Noise level
medium noise level
continuous low/
Same as NROFF = 1
AYNS [1:0], YCNA [1:0], AYLM
[1:0], YCLM [1:0], and AYMS [1:0]
are valid. YNRM, CNRM, YABN
and CABN settings are ignored;
operation is equivalent to YNRM
= 1, CNRM = 1, YABN = 0, CABN
= 0, and YMDM = 1.
All registers other than YMS [4:0]
are the same as for the register
fixed value mode. AYMS [1:0] is
valid. Operation is equivalent to
YMDM = 1.
AYABN, ACABN, AYNS[1:0],
YCNS[1:0], AYLM[1:0],
YCLM[1:0], AYMS[1:0], and
AYMOFF[3:1] are valid.
4 frames
noise reduction
Fixed value
4 frames continuous
Valid data period
low noise level
comparison
Noise level
Remarks
PEDL87V21071-01
Valid data period
(with lower limit)
noise follow-up
noise reduction
ML87V21071
continuous high
noise level
4 frames
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