METHOD AND SYSTEM OF ARBITRATION, AND PROGRAM STORAGE DEVICE (METHOD AND SYSTEM OF ARBITRATION FOR REDUNDANT CONTROLLER BY OUTPUT INTERLOCK MECHANISM AND AUTOMATIC SWITCHING FUNCTION)

摘要

PROBLEM TO BE SOLVED: To provide an arbitration mechanism for performing arbitration between redundant controllers electrically connected together and having a plurality of outputs to be provided as input to at least one device under control. SOLUTION: The arbitration mechanism includes hardware output interlock of the redundant controllers which surely uses a logic for automatically determining what controller of the redundant controllers is an active controller and output controlled only by the active controller as input to at least one device. The arbitration mechanism also includes a logic for monitoring the active controller for a failure and automatically switching active control to another controller of the redundant controllers transmissive to at least one device based on detection of the failure. COPYRIGHT: (C)2006,JPO&NCIPI