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Analog MOS Curcuits for Motion Detection and Object Tracking Based on Biological Systems
YONEZU, Hiroo,ASAI, Tetsuya,OHTANI, Masahiro,OHSHIMA, Naoki 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1
We propose simple analog MOS circuits with a correlation model based on the insect motion detectors aiming at the realization of fundamental motion-sensing systems. The model makes the circuit structure quite simple, compared with conventional velocity sensing circuits. SPICE simulation results indicate that the proposed circuits compute local velocities of the moving light spot and have direction selectivity for the spot. The spot was tracked by compensating background images.
40X40 픽셀 어레이 CMOS 실리콘 망막칩의 설계 및 제조
김종문,김호운,신장규,히로오 요네즈 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1
In this research, we have designed and fabricated a 40X40 pixel array retina chip which performs edge extraction by using CMOS standard process. The functions of photoreceptors, horizontal cells and bipolar cells have been implemented with semiconductor devices and circuits. In previous retina chips, spatial smoothing of input image has been implemented by resistive networks, which occupy a large chip area with a reduced area for effective photosensing due to a large number of required metal wires for interconnection. In this research, we have fabricated a retina chip which simplifies the wiring between pixels by using distributed-MOSFETs.