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1. 发明授权

US5142675A Monitor channel system in use with a recording apparatus 失效
标题翻译：监视与记录设备一起使用的通道系统
公开(公告)号：US5142675A
公开(公告)日：1992-08-25
申请号：US486819
申请日：1990-03-01
申请人： Koichi Oi , Takashi Hoshi
发明人： Koichi Oi , Takashi Hoshi
IPC分类号： G03G21/00 , G06F9/46 , G06F9/48 , H04N1/00 , H04N1/23
CPC分类号： G06F9/4812
摘要： A monitor control system comprises an interrupt processor for executing regular monitor processing by a periodic interrupt occurring at a predetermined time interval, and a background processor for executing background processing, wherein when interruption occurs, execution of the background processing by the background processor is interrupted while regular monitor processing is executed during a period in which background processing is interrupted. The time-consuming background processing is treated as a low-level processing task, and the regular monitor processing, as a high-level processing task. The low-level processing task is executed as a background processing during CPU idle time. Interruption of the background processing occurs ever 10-msec, during which the high-level processing task is executed. Accordingly, background processing and regular monitor processing are smoothly executed, and the CPU is thereby efficiently used.
摘要翻译：监视器控制系统包括用于通过以预定时间间隔发生的周期性中断来执行定期监视处理的中断处理器和用于执行后台处理的后台处理器，其中当发生中断时，后台处理器执行后台处理被中断，在后台处理中断的期间内执行常规监视处理。将耗时的后台处理视为低级处理任务，并将常规监视处理视为高级处理任务。在CPU空闲时间期间，执行低级处理任务作为后台处理。后台处理的中断发生在10毫秒的时间内，在此期间执行高级处理任务。因此，顺利执行后台处理和规则监视处理，从而有效地使用CPU。

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