Learn what CCDs are
A CCD, or a Charge Coupled Device, is a microelectronic device
used to capture digital images. CCDs can work with several other
digital video devices such as scanners, digital cameras,
camcorders, astronomical telescopes, robots, radar images and
satellite photograph among many others.
The origin of the CCD can be found in 1969 although it has not
become widely popular until much later. This technology has
allowed the improvement in the quality and resolution of images
as well as the transferring and importing from one device into
another. There can be a line stated between the time before the
CCD technology appeared and after its invention.
CCDs are devices that contain elements that are sensitive to
light. These photosensitive elements allow devices to read
images and store them according to the light information it
receives. Every CCD has an integrated circuit through which it
stores and accumulates the image information and which will
allow us to then transfer it to another device.
When a CCD is exposed to an image, it will store electrical
charges which will accumulate the image information. In other
ways, visual information on each light and color image aspect is
translated into different electrical charges which will equal
those light and color information pieces and this way represent
it.
This way, CCDs allow us to transfer an image which we observe
into a screen, a printer or a scanner through the electrical
charges which it stores and which represent the image. CCDs have
a very important amount of sensitivity, providing this way high
quality final products and good resolution despite bad
illumination.
The way in which a CCD stores information regarding color is
through the electrical charge intensity. Each level of charge
intensity corresponds to a different color from the spectrum.
This system is used in order to store the image information
equally as it is used to decode the electrical charges back into
colors and therefore creating the image again. CCDs are present
in many of the devices which surround us since many of the every
day devices related to images which people use involve their
use.