Technical
Words
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| Resolution |
Camera resolution is expressed
in TV lines. It is the output of the camera and is the
result of the picture captured by the Image Sensor and
the processing of that information by the Camera electronics. |
| CCD |
CCD (Charge-coupled-device)
A rectangular piece of silicon rather than a piece of film
to receive incoming light. This silicon wafer is a solid-state
electronic component which has been micro manufactured
and segmented into an array of individual light-sensitive
cells called photosites. Each photosite is one element
of the whole picture that is formed, thu it is called a
picture element, or pixel. 1/3" CCD is a little larger
in image size then the 1/4" CCD. |
| CCTV |
Closed Circuit Television. This
is a term most security industry use, but for regular individuals
its known just as security, or surveillance. |
| Image Sensor |
The light sensitivity of the
chip inside the camera that converts light into electronic
signals. The face of the chip is divided into rows and
columns of pixels. Each pixel sends a signal representing
the color and brightness of the light that strikes it. |
| Lux |
Relative amount of light that
will produce a viewable image. |
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Controllers -
There are 3 types of controllers. These will helps let
you see more than one camera.
|
| Switchers |
A video switcher is one of the controller.
It can take multiple cameras and wil show them on the monitor
one at a time. But you cant select any camera you like
or those type of options. Its the least expensive way to
go, but less features and ability. |
| Quad |
All our quad are in Real Time unlike others
that doesnt have real time, most have date generator, but
are not real time nor have technology like our digital
zoom. A quad can go up to 8 camera. Usually come in 4 channel
or 8 channel dual quad. The quad lets you see multiple
camera on screen and even choice to see just one screen.
Our quad are higher in quality and gives you digital zoom,
and such as freeze button. So you can zoom in a camera
or all at a time. Only thing about the quad is that once
you finish recording and you want to replay back to watch
your video, all the camera that was use for recording will
be display. You don't have a choice of zooming in one camera
during replaying. You don't have a a choice of viewing
one quad channel either. Lets say you use 4 channel quad,
all 4 channel will be display after you replay them. And
if you didnt use one camera, that screen will show up black
screen on your monitor. And after replay you will still
see all 4 quad shows up, 3 with picture and 1 blank picture
you didnt use. |
| Multiplexer |
All our multiplexer are in Real Time unlike
others that doesnt have real time. It cost a little more
than ones without real time, but don't make a mistake in
buying the wrong one. Having Real Time and date generator
and controls such as digital zoom, etc...full function,
will be what you need at the end. A multiplexer is the
3rd type of controller. Multiplexer is the best one and
cost more than the quad or switcher. The multiplexer gives
you more feature / controls. And what great about it is
that, unlike the quad where you have to replay all quads,
the multiplexer can replay and view one or all quad selection
and zoom in just one channel quad at a time. |
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