| 摘要 |
PROBLEM TO BE SOLVED: To improve service quality by discriminatingly managing a repetitive execution task which is changeable in service quality and re-executing the repetitive execution time in an excessive task execution allocation time when the excessive time is available at the time of task switching. SOLUTION: A task which performs a process for input to an input device and a process for output to an output device 107 is recorded in a storage device 103. An accepting process performed by a task acceptance part 110 is started when a request to set a cycle set previously for the task and a process time is made. The execution of a service quality task registered in a task management table 112 is checked by a task which has a short cycle at the time of task switching and when a task reaching the start time of the cycle is found, the task is executed until the process time of the task is consumed. Here, when a task having a shorter cycle than the task reaches the start time of the cycle during the task execution, the execution of the task is interrupted and the task having the shorter cycle is executed.
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