Camera Imagers - CMOS

3x3 CMOS imager * Each Photodiode is simulated here as just a regular diode. This creates an "ideal" CMOS imager in which each pixel is capturing the maximum amount of light output each sample. * Each pixel has a 3 NMOS topology post photodiode for amplification as well as reset and read access for each pixel individually. The rows are read sequencially top to bottom (Purple, Red, Green). * The Orange signal is a reset signal to reset the pixel before measuring. In this case, this is resetting all 9 pixels at once * Each Column of pixels has its own ADC. The row that is being read is determined by the row select clock for which voltage is passed to the ADC. Sources: The Heart of a Phone Camera: The CMOS Active Pixel Image Sensor https://share.google/7PyS9dkvapZThErDl

published 4 weeks ago