Daisuke Kobayashi,* Yuichi Yamamoto, Kiyoshi Yamamoto, Shiro Funatsu, Kenji Harada and Junji Nishii Research center, ASAHI GLASS CO., LTD., 1150 Hazawa-cho, Kanagawa-ku, Yokohama, Kanagawa 221-8755 Japan AGC ELECTRONICS CO., LTD., 1-8 Machiikedai, Koriyama, Fukushima 963-0215 Japan AGC GLASS EUROPE, Rue de l’Aurore 2 – B-6040 Jumet Belgium Department of Computer Science, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507 Japan Research Institute for Electronic Science, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo 001-0021 Japan *daisuke-kobayashi@agc.com