Abstract
A functional CMOS image sensor utilizing merged analog-digital circuit architecture based on pulse width modulation(PWM)method is proposed. In addition to row-parallel gray scale readout, thresholding, and using a PWM signal addition techniques based on switched current integration and charge paket counting, 2D-projections and block summation were realized. The test chip was implemented with a 0.8μm CMOS technology with 3.3V power supply, and the operations of 2D-projections and block summation were confirmed by experiments.
