Compact, low-cost, but real-time distributed computing for computer augmented environments

We have been conducting a research and development project, called the TRON Project, for realizing the computer augmented environments. The final goal of the project is to realize highly functionally distributed systems (HFDS) in which every kind of objects around our daily life are augmented with embedded computers, be connected with networks, and cooperate each other to provide better living environments for human beings. One of the key technologies towards HFDS is the realization methods of compact and low-cost distributed computing systems with dependability and real-time property. In this paper, the overview of the TRON Project are introduced and various research and development activities for realizing HFDS, especially the subprojects on a standard real-time kernel specification for small-scale embedded systems called ITRON and on a low-cost real-time LAN called μITRON bus, are described. We also describe the future directions of the project centered on the TRON-concept Computer Augmented Building, which is a pilot realization of HFDS and being planned to be built