1. Advanced Technology R&D Center; Mitsubishi Electric Corporation, Nagaokakyo, Kyoto, Japan Graduate School of Science and Technology, Shizuoka University; Hamamatsu Shizuoka Japan
2. Advanced Technology R&D Center; Mitsubishi Electric Corporation; Amagasaki Hyogo Japan
3. Kyoto works; Mitsubishi Electric Corporation; Nagaokakyo Kyoto Japan