JAI AD-081GE - Manual (Page 48)

AD-081GE
47
10.4.4 Partial Scan (when the start line is set at 193rd)
The following chart shows the vertical timing for 1/2 height partial scanning which starts at the
193rd line (384 lines). The horizontal timing for partial scan is the same as full scan.
Vertical
1L : 1LVAL period OB: Optical Black
Fig.37 Vertical Timing in the case of 1/2 partial scan
Horizontal
DATA OUT
D V A L
CC D Ou t
F V A L
S U B
S G
E E N
1 L V A L p e r i o d
1 c k = 3 3 . 7 5 0 MHz ( 2 9 . 6 3 n s / c k )
L V A L
E x p o s u r e
P e r i o d
Du mmy +
B l a n k
8 6
3 4 3 c k
1 4 2 0 c k
1 3 2 8 c k
1 0 2 4 c k
1 0 7 7 c k
3 4 3 c k
( 2 0 u s )
OB R e s e r v e d
3ck
8 c k
OB
40 ck 1 0 2 4 c k
R e s e r v e d
4 5 c k
3ck 6ck 3 4 3 c k 4c k 6ck
29 ck
29ck
5 9 0 c k
6 7 6 c k
1 0 7 7 c k
1 4 8
9 2
1ck
1
1 0 3 c k
F V A L r i s i n g e d g e F V A L f a l l i n g e d g e
Effective Pixels
LVAL is high during the period of optical black and effective pixels.
DVAL is high during effective pixels.
Fig.38 Horizontal Timing for partial scan
Dummy
3 L 4 L 3 8 4 L 1
1 2 3
E f f e c t i v e L i n e s
4
DVAL
DAT A OUT
5
OB 5 0 L ( 1 / 2 ) 5 0 L ( 1 / 2 )
5 4 L
4 L
0 . 5 L
B a c k o f F r a me
L VAL
S UB
S G
F V AL
E E N
E x p o s u r e
P e r i o d
Hi g h S p e ed
T r a n s f e r
F r o n t o f F r a me
Bl
a n
k
1L= 1420Cl ock ( 42. 07us )
4 8 8 L
4 9 2 L
3
8
4