A multiple output CMD imager for real-time image processing

The purpose of this paper is to examine a newly devised Charge Modulation Device (CMD) image sensor designed for real-time image processing. We designed, fabricated and evaluated a 258/spl times/258 pixels CMD imager with nine parallel outputs. 3/spl times/3 neighboring signals are obtained simultaneously at the nine output ports and the frame image is obtained by scanning the pixels. A camera system using the imager successfully performed the Sobel or the Laplacian operation in real-time (60 frames/s) with low power dissipation. The image processing concept utilizes CMD´s unique features, such as nondestructive readout capability, linear current output and flexibility in implementing various readout schemes. This architecture will produce compact and light weight smart imaging systems.<>