SDA9400 Datasheet, PDF (32/94 Pages) Micronas – Scan Rate Converter using Embedded DRAM Technology Units

SDA 9400
motion detector independent of the settings of the motion detection for scan rate conversion.
Parameter THMOV
FID3
1
0
Parameter THRGM
FRD3
1
0
Parameter SWGM
muxout
FID3
FID1
FRD3
FRD
Field difference > THRMOV
otherwise
Frame difference > THRGM
otherwise
SWGM
11
10
01
00
The ADD block combines the outputs of the field and frame differences to a single one bit data
stream mval. The combination can be influenced by the parameters AMMON and FRAFION. The
output value MOVMO of the movie mode detection block also controls the value mval when the
automatic movie mode detection is activated by setting AMMON=1X.
With deactivated automatic movie mode detection (MSB of AMMON=0) FRAFION determines
which differences are switched to the output mval. FRAFION=0 means that only the frame
difference FRD is used, FRAFION=1 supplies all three differences.
With activated automatic movie mode detection (MSB of AMMON=1) and detected camera mode
(MOVMO=0) FRAFION controls mval as described before. If movie mode is detected (MOVMO=1)
the LSB of AMMON controls the output mval instead of FRAFION. LSB of AMMON=0 supplies the
frame difference and LSB of AMMON=1 sets the output to constant zero.
Behaviour of ADD block
AMMON
0X
0X
10
11
MOVMO
X
X
1
1
FRAFION
0
1
X
X
mval
FRD
FRD + FID1 + FID2
FRD
0
Micronas
32
Preliminary Data Sheet