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Proceedings Paper

Compact battery-less information terminal (CoBIT) for location-based support systems
Author(s): Takuichi Nishimura; Hideo Itoh; Yoshinobu Yamamoto; Hideyuki Nakashima
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Paper Abstract

The target of ubiquitous computing environment is to support users to get necessary information and services in a situation-dependent form. Therefore, we propose a location-based information support system by using Compact Battery-less Information Terminal (CoBIT). A CoBIT can communicate with the environmental system and with the user by only the energy supply from the environment. It has a solar cell and get a modulated light from an environmental optical beam transmitter. The current from the solar cell is directly (or through passive circuit) introduced into an earphone, which generates sound for the user. The current is also used to make vibration, LED signal or electrical stimulus on the skin. The sizes of CoBITs are about 2cm in diameter, 3cm in length, which can be hanged on ears conveniently. The cost of it would be only about 1 dollar if produced massively. The CoBIT also has sheet type corner reflector, which reflect optical beam back in the direction of the light source. Therefore the environmental system can easily detect the terminal position and direction as well as some simple signs from the user by multiple cameras with infra-red LEDs. The system identifies the sign by the modulated patterns of the reflected light, which the user makes by occluding the reflector by hand. The environmental system also recognizes other objects using other sensors and displays video information on a nearby monitor in order to realize situated support.

Paper Details

Date Published: 25 June 2002
PDF: 7 pages
Proc. SPIE 4863, Java/Jini Technologies and High-Performance Pervasive Computing, (25 June 2002); doi: 10.1117/12.472932
Show Author Affiliations
Takuichi Nishimura, National Institute of Advanced Industrial Science & Technology (Japan)
Hideo Itoh, National Institute of Advanced Industrial Science & Technology (Japan)
Yoshinobu Yamamoto, National Institute of Advanced Industrial Science & Technology (Japan)
Hideyuki Nakashima, National Institute of Advanced Industrial Science and Technology and Japan Advanced Inst. (Japan)

Published in SPIE Proceedings Vol. 4863:
Java/Jini Technologies and High-Performance Pervasive Computing
Guang R. Gao; Ken Arnold; Guang R. Gao; Sudipto Ghosh, Editor(s)

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