SDA9410-B13 MICRONAS [Micronas], SDA9410-B13 Datasheet - Page 41

• Manufacturer Part Number: SDA9410-B13
• Description: Display Processor and Scan Rate Converter using Embedded DRAM Technology Units
• Manufacturer: MICRONAS [Micronas]

SDA9410
C and TNRKOY/C. TNRHOY/C shifts the curve horizontally and TNRKOY/C shifts the
5.4.3.2
The equation below describes the behaviour of the temporal motion adaptive noise
reduction filter. The same equation is valid for the chrominance signal. Depending on the
motion in the input signal, the K-factor Ky (Kuv) can be adjusted between 0 (no motion)
and 15 (motion) by the motion detector. The K-factor for the chrominance filter can be
either Ky (output of the luminance motion detector, TNRSEL=0) or Kuv (output of the
chrominance motion detector, TNRSEL=1). For the luminance and chrominance signal
the delay of the feed back path can be either a field delay (DTNRON=1) or a frame delay
(DTNRON=0) (block diagram of noise reduction).
Equation for temporal noise reduction (luminance signal)
Equation for temporal noise reduction (chrominance signal)
(compare "Block diagram of noise reduction" on page 40)
The Figure 16 shows the motion detector in more detail. Temporal noise reduction can
be switched off by NRON (NRON=0). The I²C Bus parameter TNRFIY/C switches
between a fixed noise reduction K-factor TNRVAY/C (TNRFIY/C=0) or a motion adaptive
noise reduction K-factor (TNRFIY/C=1).
Figure 16
In case of adaptive noise reduction the K-factor depends on the detected “Motion” (see
Figure 16). The “Motion”-Ky/Kuv characteristic curve (LUT) is fixed inside the SDA
9410, but the characteristic curve can be changed by two I²C Bus parameters: TNRHOY/
41
UVOUT
DY/UV
Motion adaptive temporal noise reduction
Block diagram of motion detector
=
YOUT
æ
è
1
------------ -
16
detection
+
Motion
K
=
ö UVSNR UV1
Θ
æ
è
TNRCLY/C+1
1
---------------- -
Motion
+
16
Ky
ö YSNR YR
TNRHOY/C
TNRKOY/C+1
Θ
–
LUT
TNRVAY/C
Ρ
+
–
TNRFIY/C
0
UV1 K ;
1
MUX
0
15
Ρ
Input signal processing
+
NRON
1
0
MUX
YR
Preliminary Data Sheet
=
Θ
Ky/uv
Ky Kuv
;
Micronas
Ρ