日本松下电气工业公司开发出具有“异”运算功能的光电集成电路。该集成电路可对两个输入帧之差成象,速度为普通电子集成电路的10—200倍。大规模集成的这种光电集成电路将用于高速图象直接匹配。这种一毫米见方的光电集成电路由磷化铟衬底上形成的512个逻辑单元并行连接而成,每个单元50×30微米;可同时处理256个位对。异运算用以产生表明两个输入之差的帧。普通电子电路也可做到这一点,但需顺序检查每一象素来探测其差异,检查256个象素需 Japan’s Matsushita Electric Industrial Co., Ltd. has developed a “different ” computing capabilities of optoelectronic integrated circuits. The integrated circuit can image the difference between two input frames at 10-200 times the speed of conventional electronic integrated circuits. Large-scale integration of such optoelectronic integrated circuits will be used for direct matching of high-speed images. The one millimeter-square optoelectronic integrated circuit is formed by parallel connection of 512 logic cells formed on an indium phosphide substrate with 50 × 30 μm per cell; 256-bit pairs can be processed simultaneously. An exclusive-OR operation produces a frame that indicates the difference between the two inputs. Common electronic circuits can do this, but inspect each pixel sequentially to detect their differences, checking for 256 pixels