Abstract

In Japan, many campanies who are building complex embedded systems such as cellular phones and degital televisions are considering to adopt embedded Linux for their products. Most of these companies have been adopted the ITRON real-time operating system as their operating systems, but the functionalities are not enough to build complex embedded systems because ITRON does not provide… memory protection, and file systems and network systems are provides as additional middleware components. Many future embedded systems need to access various services on the Internet, and Linux already provide a lot of middleware to reduce the development cost dramatically. Japan Embedded Linux Consortium consists of over 100 companies in Japan is now dicussing on how to migrate from ITRON-based embedded systems to Linux-based embedded systems. Especially, many campanies are interested in whether embedded Linux can satisfy timing constraints for their products or not. Our paper describes requirements on timing constraints that should be satisfied in their products. We have been discussing the requirements in Real-Time Working Group of Japan Embedded Linux Consortim, and we like to show whether current Linux can satisfy the requirements.

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