METHODS AND APPARATUS FOR PERFORMING SIGNAL PROCESSING FUNCTIONS IN AN ELECTRONIC IMAGER

摘要

An electronic imager capable of performing selectable signal processing functions on measured pixel signals includes fixed digital logic circuitry. The imager includes a detector array comprising a plurality of pixels, an analog-to-digital conversion circuit responsive to an output signal from at least one pixel and to at least one threshold signal for converting the pixel output signal into a digital signal, and a digital logic circuit responsive to the digital signal for providing an output signal related to the pixel signal by a selectable function. Different signal processing functions are selected by varying the threshold signal provided to the analog-to-digital conversion circuit.