Design of a Vision Chip for Lateral Motion Detection



                                     Student:Sung-Chih Shen

                                     Advisor:Dr. Kai-Tai Song                         




             This thesis presents the development of a vision chip for detecting lateral object motion and approaching. The movement detection circuit can detect whether a moving object is approaching or not. The circuit has been successfully simulated by Hspice and integrated into a 20×20 pixel array sensor chip. The vision chip is fabricated with TSMC 0.35 2P4M CMOS process. The chip area is 2.48×2.42. After testing, we found that the offset voltage of inputs of comparator is too large, such that the correlation among photocells are not generated as expected. However, the function of photocells, registers and correlation in extreme cases are verified.