CCD: This the light sensitive
device in most all digital cameras that turns the light entering though the lens into
electronic signals that can be digitally processed and saved; a mechanism that converts
light into a proportional (analog) electrical current; the two main types of CCD are
linear arrays, used in flatbed scanners and digital copiers, and area arrays, found in
camcorders, digital cameras, and the like. It stands for Charge Coupled Device.
Charged Coupled Device: a light sensitive chip used for image gathering. In their
normal condition these are greyscale devices. To create color a color pattern is laid down
on the sensor pixels, using RGBG color mask. (Red, Green, Blue, and Green) The extra Green
is used to create contrast in the image. The CCD Pixels gather the color from the light
and pass it to the shift register for storage. CCD are analog sensors, the digitizing
happens when the electrons are passed through the A to D converter. The A to D converter
converts the analog signal to a digital file or signal.
The maximum CCD resolution is the total number of pixels in a camera's
sensor, so the higher the resolution the greater the detail in a picture.
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