TY - CONF A1 - Raab, Peter A1 - Krämer, Stefan A1 - Mottok, Jürgen A1 - Meier, Hans A1 - Racek, Stanislav T1 - Safe software processing by concurrent execution in a real-time operating system T2 - 16th International Conference on Applied Electronics (AE 2011), 2011, Pilsen, Czech Republic N2 - The requirements for safety-related software systems increases rapidly. To detect arbitrary hardware faults, there are applicable coding mechanism, that add redundancy to the software. In this way it is possible to replace conventional multi-channel hardware and so reduce costs. Arithmetic codes are one possibility of coded processing and are used in this approach. A further approach to increase fault tolerance is the multiple execution of certain critical parts of software. This kind of time redundancy is easily realized by the parallel processing in an operating system. Faults in the program flow can be monitored. No special compilers, that insert additional generated code into the existing program, are required. The usage of multi-core processors would further increase the performance of such multi-channel software systems. In this paper we present the approach of program flow monitoring combined with coded processing, which is encapsulated in a library of coded data types. The program flow monitoring is indirectly realized by means of an operating system. Y1 - 2021 UR - https://opus4.kobv.de/opus4-oth-regensburg/frontdoor/index/index/docId/1123 SP - 315 EP - 319 ER -