1. Ministry of Health, Labor and Welfare, “The senior citizen care that aimed for 2015,” http://www.mhlw.go.jp/topics/kaigo/kentou/15kourei/index.html , 2003.
2. K. Yamakoshi, “Guidebook of Health-care and Welfare Technology,” Japanese Industrial Standards Committee, pp. 145-155, 2001.
3. Japan Wellness and Welfare Industry Association, “An investigation study about standardization of a welfare tool / a system entrusted with in 2002 by Ministry of Economy, Trade and Industry,” pp. 17-24, 2002.
4. S. Ishii, “Meal-assistance Robot “My Spoon”,” Journal of the Robotics Society of Japan, Vol.21, No.4, pp. 44-47, 2003.
5. E. Nakano, T. Arai, K. Yamaba, S. Hashimoto et al., “MEL-KONG,” Proc. of 11th Inten. Symp. on Industrial Robots, p. 87, 1981.