Yoshimichi Yonezawa

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Human-computer interaction devices using handwriting movement have been developed. But almost all the pen-based devices have a special plane, which gives us a sense of touch different from that of ordinary writing with a pen on paper. We tried to reproduce the handwritten patterns using acceleration and angular velocity of pen movement. In writing, the pen(More)
A mobile phone-based system has been developed to detect and transmit notification of elderly person daily-life emergency situations. The system employs a dual axis accelerometer, two low-power active filters, a low-power 8-bit single chip microcomputer, two mobile phones and a personal computer. The dual axis accelerometer measures body movements produced(More)
Micro capsule paper has been developed by Yonezawa [6, 7] for tactile pattern. To learn printed Chinese characters (called "Kanji" in Japanese), several relief characters have been prepared to enable the blind to study these complicated printed characters by this micro capsule paper. All prepared characters (alphabet, braille patterns, Kanji) data for micro(More)
In Japan, hospital or welfare office home helpers provide home welfare and care services, such as cooking, bathing, washing, cleaning and shopping, for the elderly. We have developed a Web-based home welfare and care services request system using wireless Internet mobile phones and Internet client computers; it employs a pen type image sensor for the(More)
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