Design and Implementation of Device with Alterable Functions for Ubiquitous Computing

Ubiquitous computing has recently been attracting a great deal of attention. In ubiquitous computing, compact devices embedded in environments provide various services. Their computational resources, such as their memory capacity and processing speed, are limited because of their compactness. Devices in ubiquitous environments have to accomplish various services under such severe restrictions. However, since the functions of conventional devices are fixed, they cannot be applied to providing various services. In this paper, we propose a device with alterable functions for ubiquitous computing. By changing the proposed device's functions according to the purpose of the system, it can be applied to many services. In addition, we used a rule-based programming language to make the device sufficiently flexible to describe the usage of its functions. Novelties of the proposed device are its alterable functions and flexible programming of these functions.