SDA9410-B13 MICRONAS [Micronas], SDA9410-B13 Datasheet - Page 105

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

SDA9410
vectors from the estimator or the analysis of the field difference. It is expected that with
film material broadcast in the 50 Hz television standard, motion will occur only every
second field. Therefore the “vector activity” (VAC) in the SDA 9410 as sum of the
absolute vector components which are larger as a threshold defined by the I²C
parameter MEMMINMOT (I²C Bus sub address 4Bh) is accumulated . Depending on the
sum, the actual detected mode (MOVMO, MOVTYP) and several I²C Bus parameters
(MEMINTH, MEMAXTH, SFMINTH, SFMAXTH) the actual field is decided to have
motion or not. The table below explains the decision of the detection:
Table 81
The values scmin and scmax are scale factors which are defined by the table below:
Table 82
To avoid switching artifacts a temporal hysteresis is implemented. Temporal hysteresis
means, that at least a certain number of fields defined by the I²C Bus parameter
MEMOHIST must fulfill the conditions for switching from camera mode to film mode or
vice versa. The number of fields (NoFields) defined by the I²C Bus parameter
MEMOHIST can be calculated by the equation below:
105
Actual field has
motion
no motion
Principles of global motion and film mode detection
Definition of scmin/scmax depending on SFMINTH/SFMAXTH
SFMINTH/SFMAXTH
00
01
10
11
NoFields
If
[VAC > scmax * (MEMAXTH+1)] or
[ (VAC > scmin * (MEMINTH+1)) and (VAC <= scmax *
(MEMAXTH+1)) and
MOVMO=0]
[VAC <= scmin * (MEMINTH+1)] or
[ (VAC > scmin * (MEMINTH+1)) and (VAC <= scmax *
(MEMAXTH+1)) and
MOVMO=1]
=
Global motion, film mode and phase detection
2

(
MEMOHIST
scmin/scmax
8
16
32
64
+
1
)
Preliminary Data Sheet
Micronas