Filter
Top Products
GB
20 Typical CCD Phenomena
Typical CCD
Phenomena
The following phenomena may appear on
the monitor screen while you are using a
CCD color video camera. These phenomena
stem from the high sensitivity of the CCD
image sensors, and do not indicate a fault
within the camera.
Vertical smear
A “smear” may appear to extend vertically
from very bright subjects, as shown below.
This phenomenon is common to CCD
imaging elements using an interline transfer
system, and is caused when electric charge
induced by infrared radiation deep within
the photo sensor is transferred to the
resistors.
Aliasing
When shooting fine stripes, straight lines or
similar patterns, the lines may become
slightly jagged.
Blemishes
A CCD image sensor consists of an array of
individual picture elements (pixels). A
malfunctioning sensor element will show up
as a single pixel blemish in the image. This
is generally not a problem.
White speckles
When you shoot a poorly illuminated object
at a high temperature, small white dots may
appear all over the entire screen image.
Specifications
General
CPU 32-bit RISC embedded processor
RAM 16 MB
Flash PROM 8 MB
OS Embedded realtime Linux
Protocol TCP/IP, PPP, PPPoE, ARP,
RARP, ICMP, FTP, SMTP,
DHCP, HTTP, SNMP
Compression Wavelet
Compression rate
10:1 to 200:1 (10 steps)
Frame rate Max. 25 fps (360 × 288)
Image size 720 × 576, 720 × 288, 360 × 288,
180 × 144, 90 × 72
Web browser Internet Explorer Ver. 5.0 or later
Netscape Navigator Ver. 4.7 or
later of Ver. 4.x-series
Multi access Max. 100 users
Image rotation0°, 90°, 180°, 270°
Others Activity detection, focus area
setting
Image system
Image device
1
/3 type CCD, interline transfer
(Super HAD CCD
®*
)
Effective picture elements
752 (horizontal) × 582 (vertical)
* “Super HAD CCD” is a registered trademark of
Sony Corporation.
Functions/performance
Horizontal resolution
480 TV lines
Signal-to-noise ratio
50 dB
Minimum illumination
2 lux (AGC ON, F1.4, 50 %)
Gain control AGC (Automatic Gain Control)
always ON
White balance ATW (Automatic Tracing White
balance)
CCD IRIS ON/OFF switchable
Flickerless mode
ON/OFF switchable
Lens (standard equipment)
Lens Vari-focal lens
Focal length 3.5 to 5.0 mm
View angle 73.9 to 33.8° (horizontal), 56.3 to
25.8° (vertical)
Pale vertical smear
Video monitor
screen
Very bright subject
(such as an electric
lamp, fluorescent
lamp, sunlight, or
strong reflected light)