This paper describes two of the primary Real Time Operating System (RTOS) architectures that are being applied to Driver Information Systems (DIS or ITS, Intelligent Transportation Systems) in vehicles today. The two application areas have been split into a 'higher end' where relatively complex graphics and networking capabilities are required, and 'lower end' where comparatively limited graphics and networking features are required. These two application areas have been mapped to two corresponding RTOS domain areas. For the high end, a typically named 'fully featured (classic) RTOS' is considered. For the lower end an OSEK RTOS is described. For both of the two different application areas, the differing RTOS functionalities are explained. Included in further detail, for the higher end application, is one of the first integrated RTOS, and Java architectures, including graphics stacks, networking, web browsers and servers. The combination of a tightly integrated implementation of Personal Java (Sun's optimised Java technology for the embedded industry), and an RTOS provides for the combined features such as internet-readiness, security, extensibility, and upgradeability, with the reliability, scalability, portability, and performance of the development environment. For the covering abstract see ITRD E114174.
Samenvatting