The Efforts of Japanese Semiconductor Vendors toward Standardization of the Automotive LAN Bus-system

The purpose of this paper is to analyze standardization activities of interfaces of automotive embedded system from a semiconductor supplier's point of view, and then try to indicate the germ of 'Japanese open innovation system' in this sector. In line with this purpose, we mainly focus on JasPar (Japan Automotive Software Platform and Architecture), a consortium set up in 2004 to promote standardization in software platform for automotive electronic control systems and in communication protocols. As for conducting in detail investigation toward its standardization activities, we deal with two working groups in JasPar: Microcontroller Working group and Conformance working group where semiconductor vendors actively engage themselves on the standardization activities of the debug interface and the FlexRay conformance test specification respectively.