SDA9415-B13 Datasheet, PDF (116/185 Pages) Micronas – Display Processor and Scan Rate Converter

SDA 9415 - B13
Preliminary Data Sheet
signal. The amplitude of the correction signal is adjustable by the I²C Bus parameter
ASCENTLTI.
The exact position of a luminance transition is calculated by detecting the corresponding
zero transition of the second derivative of the luminance signal. Low pass filtering is
performed to avoid noise sensitivity. The I²C Bus parameter THRESY and THRESY_UP
defines the sensitivity of the DLTI circuit. High values cause that only significant
luminance transitions are improved. Small luminance variations remain unchanged.
Table 91
THRESY
000
001
010
011
100
101
110
111
Sensitivity
DLTI off
4
8
12
16
20
24
28
I²C Bus parameter THRESY
Table 92
THRESHY_UP
00
01
10
11
Amplitude
off
32
128
64
I²C Bus parameter THRESY_UP
116
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