SDA9410-B13 MICRONAS [Micronas], SDA9410-B13 Datasheet - Page 110

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

SDA9410
5.12.1
The luminance peaking filter improves the over all frequency response of the luminance
channel. It consists of two filters working in parallel. They have high pass (HP) and band
pass (BP) characteristics. Their gain factors are separately programmable (I²C Bus
parameters BCOF 5Dh, HCOF 5Dh). The high pass and the band pass filters are
equipped with a common coring algorithm. It is optimized to achieve a smooth display of
grey scales, not to improve the signal-to-noise ratio. Therefore no artifacts are produced.
Coring can be switched off (I²C Bus parameter CORING, 5Ah). The figure below shows
the block diagram of the peaking block.
Figure 53
T
High pass Transfer function: HHP(z) = 1/16 (1-z
Band pass Transfer function: HBP(z) = - 1/8 (1-z
110
he transfer functions of the separate filters are listed below:
YIN
Peaking
Block diagram peaking
Delay
BP
HP
BCOF HCOF
gain_bp
gain_hp
-1
-2
)
)²
4
CORING
Coring
PEAKING
Preliminary Data Sheet
Display processing
YPEAK
Micronas