A 256x256 CMOS active pixel sensor (APS) is described for an automotive stereo-vision system. Illumination may vary over several orders of magnitude, requiring a high dynamic range imager. Dynamic range is increased 20x using a special clocking scheme for the lateral overflow gate. This dynamic range enhancement offers improvements over previously-described techniques. It simultaneously provides flexibility, user-adjustability, and digital control, with no reduction of fill factor. On-chip column-parallel cyclic analog-to-digital converters (ADCs) produce digital output at frame rates from 30 to 390 frames/s.


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    Title :

    A 256x256 CMOS imaging array with wide dynamic range pixels and column-parallel digital output


    Contributors:
    Decker, S. (author) / McGrath, R. (author) / Brehmer, K. (author) / Sodini, C. (author)


    Publication date :

    1998


    Size :

    2 Seiten, 3 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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