Abstract
A new CMOS imager with motion detectors has been developed. This chip can detect motion of the projected objects and scan the window-shaped area in which motion is detected, which improves the frame speed and effectively reduces the data amount to be transferred to the successive boards. Sparsely placed motion detectors in the sensor array detect motion regardless of frame speed with little reduction of pixel density. Other important circuits in developing this chip include a unity-gain pixel amplifir and multi-stage column readout circuits. A 5.8mm×8.7mm chip fabricated by using 0.35μm CMOS process contains 192×192 pixels and 7×7 motion detectors. Experimental results have successfully confirmed the functions of the motion detectors and the local scan.
