Patent ID: 6600471
Filing Date: 2003-07-29
Classification: H04N

Abstract:
An imaging system comprising:a MOS pixel array having a number, r, of rows of pixels, each pixel including a light detecting element, a reset node connected to the light detecting element for controlling dissipation of photogenerated charge produced by the light detecting element, and a sense node connected to the light detecting element for measuring photogenerated charge produced by the light detecting element; a charge control voltage generation circuit including a circuit topology for producing a plurality of charge control voltages selected to control dissipation of photogenerated charge produced by the light detecting element, in accordance with a corresponding pixel transfer function; and a switch circuit connected to the voltage generation circuit and connected to the pixel array to apply voltages produced by the charge control voltage generation circuit to reset nodes of pixels, application by the switch circuit of each of the charge control voltages to a row of pixel reset nodes being characterized by a voltage application settling time, tS, that is less than about 1Nrf, where N is an integer and f is imager frame rate.