Ubiquitous computing (one person, many computers) is the third era in computing. It follows the mainframe era (one computer, many people) and the PC era (one person, one computer). It is a post-desktop model of human-computer interaction in which information processing has been thoroughly integrated into everyday objects and activities. As opposed to the desktop paradigm, in which a single user consciously engages a single device for a specialized purpose, someone "using" ubiquitous computing engages many computational devices and systems simultaneously, in the course of ordinary activities, and may not necessarily even be aware that they are doing so.
Following the popularity of the Internet-enabled mobile phones, the number of devices connected to the network will increase rapidly. The days of ubiquitous computing environment when the surrounding environment is increasingly embedded with computers and connected to a network, is becoming realized.
To make a ubiquitous computing environment a reality, there are two important points to note here. First, it is important to ensure network security at the user side. In a ubiquitous computing environment, various devices other than portable information devices such as mobiles phones and PDAs , will be connected to the network from houses and buildings. Some examples of these uses are: controlling home equipment from outside via the network, sending private information or electronic tickets, etc. It is therefore necessary to ensure network security so that tapping, falsification and/or the disguising of identity by others can be prevented. Second, it is necessary to develop products efficiently in a short period of time. There is a problem with individually developed real-time operating systems and/or middleware that are compatible with the different kinds of CPU hardware available for embedded systems. In order to respond to product functionality upgrades, development time is prolonged, and development costs increase as debugging time increases. All of these are becoming a big problem among manufacturers. The T-Engine Project aims at building a common development platform that can be used to solve these problems. For security guarantees, the T-Engine hardware, OS, middleware are compatible with the security architecture of a new TRON subproject called eTRON, which has been adopted as the security platform for a networked environment. The eTRON chip will be installed in the T-Engine hardware so that all devices using eTRON will be able to transmit information safely across open networks such as the Internet.
Japan is well on its way towards bringing ubiquitous computing (one person, many computers) home to its people. IP-enabled devices and networks now pervade virtually every sphere of human activity in Japan: in homes and workplaces, in open public spaces and even in cars. Considered to be the latest phase in digital technology, pervasive or ubiquitous computing is run on the highly sophisticated T-Engine platform, making it easier and cheaper to create embedded computers in everyday objects, which can in turn be connected to networks. T-Engine is the standard real-time OS designed to work with the TCP / IP protocol stack (IPv6). The new IPv6-compatible TCP/IP stack, "KASAGO for T-Engine was developed by Elmic Systems, and forms the middleware that supports Internet connectivity via high-performance, high-reliability TCP/IP and IPv6, and has been designed, developed and refined specifically for embedded devices. T-Engine technologies are rapidly gaining an entry into a variety of environments, from homes to automobiles. They are a complete end-to-end solution allowing for easy distribution of software resources, while ensuring standardized hardware and tamper-proof network security.
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