Affiliation: | (1) Department of Electronic and Computer Engineering, Gifu University, 1-1, Yanaido, Gifu 501-11, Japan;(2) Scientific Investigation Research Laboratory, Gifu Prefecture, 2-1-1, Yabutaminami, Gifu 500, Japan;(3) Present address: Oki Electric Industry Co., Ltd., Shin Toranomon Building, 1-7-12, Toranomon, Minato-ku, Tokyo 105, Japan |