Dragon: soft real-time event delivering architecture for networked sensors and appliances

Presents a new framework for constructing flexible event-driven systems for distributed networked devices and appliances, referred to as Dragon. Dragon enables constructing and modifying an event-driven system easily by visualizing distributed services which are handled in an integrated manner. The updating of the system is conducted immediately following a modification by Dragon. Dragon is built on to of Jini/Java and can be executed on any Jini/Java-compliant machines. In addition, Dragon incorporates soft real-time event delivery to enhance the predictability of behavior of the constructed system. In this paper, we describe in detail the design and implementation of Dragon.