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:
Apr. 17, 2012
Filed:
Dec. 03, 2007
Anil Pothireddy, Hyderabad, IN;
Neranjen Ramalingam, Bangalore, IN;
Anil Pothireddy, Hyderabad, IN;
Neranjen Ramalingam, Bangalore, IN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for using a magnitude comparator circuit and a flag bit, for detecting and preventing errors from occurring in the FSM state bits that could otherwise cause the system to hang. Preferably, the flag bit is set with all the valid state transitions, and a magnitude comparator is used to continuously monitor the value of the current state bits. When a FSM state transition occurs based on the flag bit and the output of the magnitude comparator, a potential error condition can be detected and the FSM transition can be blocked or the FSM can be safely transitioned into a predetermined 'reset state'.