| 摘要 |
<p>A failure detection system detects a failure of a package in a redundant system having a duplex package configuration. The failure detection system includes a first package (P01, P11) including a signal processor (150) for carrying out a predetermined signal processing on an input signal to the first package, where the first package is provided in each of first and second systems, a second package (P02, P12) including a selector (100) for selectively outputting an output signal of the signal processor of the first package in one of the first and second systems in response to a control signal, a failure detector (300) for detecting a failure in the output signal of the signal processor of the first package in each of the first and second systems and for outputting a failure detection signal if the failure is detected, and a signal processor (200) for carrying out a predetermined signal processing on the output signal of the selector, where the second package is provided in each of first and second systems, and a controller (900) for supplying the control signal to the selector of the second package in each of the first and second systems based on the failure detection signal received from the second package in each of the first and second systems, so that the selector selectively outputs the output signal of the signal processor of the first package in an active one of the first and second systems. The controller includes a mechanism for disregarding the failure detection signal received from the second package during a predetermined time in response to a predetermined signal. This predetermined signal may indicate which one of the first and second systems is active or, indicate whether or not the second package of each of the first and second systems is mounted on a unit to which the first package of each of the first and second systems is mounted. <IMAGE></p> |
