Charged coupled device (CCD) is a device which is designed for the transfer of electrical charge from within the device to a designated area where the charge can be converted into a digital value. This is done by moving the signals between different stages within the device. CCD is a major technology widely used in digital imaging. The pixels are then dedicated to light capture and the output’s uniformity, which is a key factor for the quality of the image, is high. CCD image sensors are capable of resolutions falling in the range of 10.2 megapixels or higher. The pixels in a CCD image sensor are presented by p-doped MOS capacitors
For capturing images through a CCD based image sensors, a photoactive region and a transmission region which is manufactured from a shift register. The image is then projected through a lens on to the capacitor array, causing them to collect a substantial amount of electric charge which is directly proportional to the intensity of the light at that particular location In a CCD image sensor, the pixel charge is transmitted through a restricted number of output nodes, which is then converted into voltage, buffered and sent-off chip as an analog signal. . One dimensional array which are in scan cameras, capturing a single portion of the image and two dimensional array are used in still and video cameras captures multidimensional picture that corresponds to the scene which is projected on to the focal plane of the sensor. Post exposure of the array to the image, a control circuit enables each of the capacitor to transfer its contents to its neighbor which operates as a shift register. photo clipping services