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Our society depend on embedded and ubiquitous computing and the reliability of embedded software becomes more and more important. We have conducted a five years project with industries to develop software for realizing highly reliable embedded systems. We have tackled reliability issues from the following aspects. (1)Design environment: we have developed a UML design verification tool that apply model...
Currently, for embedded systems, the complexity of the software is rapidly increasing due to the advance in the fields of multimedia and network. It is difficult to find the cause of problems. Especially, when the causes of problems are buried in the kernel layer, finding them from application's layer is not easy. One reason of the difficulties comes from that there are not effective tools and functions...
Recently, the engineering cost of embedded systems is rapidly increasing due to growing sophistication of services. To deal with the problem, hybrid operating system environments have been proposed. This enables to run a RTOS and a general purpose OS concurrently and to reuse software resources on both of them. This approach is efficient in reducing engineering costs. We reconfigured the requirement...
The emergence of functional embedded systems such as cell-phones and digital appliances brought up a new issue, building a system supporting both real-time and rich services. One of the solutions is leveraging a hypervisor to integrate an RTOS and a commodity OS into a single device. However, this approach induces the limitation of application deployment; all the high priority tasks should reside...
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