Back when he was earning a doctorate at Keio University in Japan, he chose this as the topic for his doctoral research. Right after his doctorate was published, a Japanese company with vision purchased the rights to his patent and began selling a character recognition device based on it for 40 million yen.
早在日本慶應大學攻讀博士時，他就以此為研究課題，論文發表後，立刻被獨具慧眼的日本公司買走專利，製成一台售價四千萬日幣的自動讀圖系統。