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2. CAMERA CIRCUIT DESCRIPTION
2-1 . CCD IMAGE DEVICE
2-1 -1 . Outline
This system employs a 1
CCD solid image device. The structure and characteristics
of the device are shown below, and the block diagram is
shown in Fig .
2-2.
[Structure]
Optical size
I nterline type CCD image sensor
Effective picture elements
Picture elements in total
Chip size
U nit cell size
Optical black
Dummy bit number
•
inch optical size interline type
/3
1
inch format
/3
752(H) x 582M
x
795(H)
596M
mm(H) x
mmM
6.00
4.96
µ m (H)
µ mM
6.5
x 6.25
Horizontal (H) direction
Front :
3
picture elements
:
Back
picture elements
40
Vertical
direction
M
Front
picture elements
: 12
Back
picture elements
: 2
Horizontal
: 22
Vertical : 1 (only in even fields)
---
PG
GND
SUB
--c:::J
Photo sensor
Note
Fig. 2-2. CCD Block Diagram
[Characteristics]
Field accumulation system with high movement resolution
Low darkness current, high sensitivity sensor
Ye, Cy, Mg, G complementary colour mosaic filter
Horizontal register and pre - charge gate
system
Low smear and low blooming
Variable speed electronic shutter function
Fig. 2-1 . Optical Black Location (Top view)
Horizontal shift register (CCD)
H1
LH 1
H2
- 4 - 9 -
Pin CD
:>:<< t
v
l
..
��
H
-
3
H
Pin@
V direct drive
5
_j
2
1 2
40
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