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  • Application Note: AAT3190 Positive/Negative Bias Supply for CCD Camera Sensors
    Typical CCD camera sensors require a positive and negative bias voltage of +15V and -8V, respectively, at load currents up to 10mA. This application requires good output regulation for these bias supply voltages. In addition, CCD camera sensors are noise sensitive and require very low input
  • View to the Future: CCD and CMOS Sensors Today and Tomorrow
    Digital image sensors are well established in private and professional applications. But which sensor type works best, CCD or CMOS? This question enlightens passionate discussions. A more detailed analysis reveals that these sensors share many common characteristics. Both CMOS and CCD can
  • Image Sensor Architectures for Digital Cinematography
    Regardless of the technology of image acquisition (CCD or CMOS), electronic image sensors must capture incoming light, convert it to electric signal, measure that signal, and output it to supporting electronics. Similarly, regardless of the technology of image acquisition, cinematographers can
  • Sensor Sense: Charge-coupled devices
    In simplest terms, the image sensor or imager in vision systems is an XY grid of photosites that convert light into electricity. Most often the imager is a charge-coupled device or CCD, though CMOS imagers are rapidly gaining ground. Charge-coupled devices gained fame as the primary imager
  • Charge Transfer Efficiency
    This is a CCD sensor level specification which describes the efficiency of charge transfer. The image from a CCD is read out by transfer of rows into a horizontal register, followed by transfer of pixel charge along the horizontal register towards the output node. As each pixel's charge reaches
  • CMOS Cameras Rise to Speed Challenge
    Advances in CMOS image-sensor technology are making it possible for a new breed of highspeed cameras to capture events previously impossible to image by conventional CCD cameras. Improvements in chip design and manufacturing have enabled CMOS cameras to become a cost-effective, high-performance
  • Readout Noise
    Readout noise is specified both for the CCD sensor and the total system. Noise can be thought of in two ways. First, there is not perfect repeatability each time charge is dumped out of the CCD and digitized. Conversions of the same pixel with the same charge will not always yield exactly the same
  • Forgot film? No problem for digital cameras
    or RS-232 ports. The amount of light reaching each photosite through the camera lens is represented by a vertical bar whose height is proportional to the charge intensity. NuCORE Technologies Inc. claims this chip set can deliver a three-CCD sensor color quality image from a single CCD or CMOS

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