The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 1998
Filed:
Sep. 20, 1996
Yoshiteru Mori, Kitakatsuragi-gun, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The invention provides a runaway detection/restoration device which enables an automatic restoration of a high degree of safety and carries out the control of devices when the runaway of a CPU has been generated. The runaway detection/restoration device is provided with runaway detecting means such as a watchdog timer 89 or the like which monitors troubles in a sequential control program for the device operations, and a memory 87 which stores information related to the runaway detected by the runaway detecting means, for the CPU 82 which controls the devices. The runaway detection/restoration device judges whether or not the CPU 82 is automatically restored according to the information related to the runaway stored at the time of the detection of a new runaway, such as the number of times runaway was detected, operation mode at the time of the detection of the runaway and the generation frequency of the runaway.