公开(公告)号：US5978939A

公开(公告)日：1999-11-02

申请号：US914877

申请日：1997-08-20

申请人： Kenichi Mizoguchi ,  Kotaro Endo ,  Shigekazu Hirokane

发明人： Kenichi Mizoguchi ,  Kotaro Endo ,  Shigekazu Hirokane

IPC分类号： G06F11/30 ,  G06F11/00

CPC分类号： G06F11/0757

摘要： A timeout monitoring system including plural timeout value setting mechanisms, each of which sets a timeout value as a result of the start-up. Also included is plural timeout monitoring mechanisms, each of which do not start the timeout value setting mechanism at the following stage but stop it, when the timeout value set by the timeout value setting mechanism at the preceding stage is not set again even after a specific time has elapsed. A watchdog timer outputs an abnormality notice, when the timeout value set by the timeout value setting mechanism at the last stage is not set again even after a specific time has elapsed. Hierarchizing the software of the watchdog timer makes it possible to set a suitable timeout value in the watchdog timer for a higher-speed sensing of timeout and monitor the timeouts of plural systems at plural levels, which improves the monitoring capability.

摘要翻译： 一种超时监视系统，包括多个超时值设定机构，每个超时值设定机构设定作为启动的结果的超时值。 还包括多个超时监视机制，每个超时监视机制在下一阶段不启动超时值设置机制，但是当由前一级的超时值设置机制设置的超时值即使在特定 时间已经过去了 当经过特定时间后，由最后一级的超时值设定机构设定的超时值也不再​​设定时，看门狗定时器输出异常通知。 看门狗定时器的软件层次结构使得可以在看门狗定时器中设置合适的超时值，以便更高速度的超时检测，并监控多个级别的多个系统的超时，从而提高监控能力。