CCD
CCD
Television production glossary
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Definition of ccd
CCD: The image sensing device of video and television cameras -- the component which converts light from the lens into an electrical signal. Made up of pixelsthe more pixels, the higher the resolution. Charged Coupled Device, a light sensitive chip used for image gathering. In their normal condition these are grayscale 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. CCDs are commonly referred to simply as "chips". They replaced previous tube technology in the 1980's. Larger CCDs can naturally accommodate more pixels, and therefore have higher resolutions. Common sizes are 1/3" (prosumer level), 1/2" and 2/3" (professional level). Consumer cameras generally have a single CCD which interprets all colors, whereas professional cameras have three CCDs -- one for each primary color.
Source : http://blog.involvemag.com/TVPROD/JJTVGLOS.DOC
Web site link: http://blog.involvemag.com/
Author : Joel Johnson
Television production glossary
Television production glossary index
Definition and meaning of ccd
Meaning of ccd
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