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. 07, 2009
Filed:
Jun. 29, 2004
Emrys Williams, Milton Keynes, GB;
Andrew Rudoff, Boulder, CO (US);
Emrys Williams, Milton Keynes, GB;
Andrew Rudoff, Boulder, CO (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
One embodiment of the invention provides apparatus including a data structure representing a fault tree for a system. The data structure comprises a plurality of events linked by propagations. Each event is classified as one of at least three possible event types. A first type of event is a problem event, which represents an underlying cause of misbehavior in the system. A second type of event is an error event, which represents an error in the system comprising an incorrect signal or datum. A third type of event is a report event, representing the formal detection by the system of an error. Each propagation in the fault tree denotes a cause and effect linkage from one event to another event. There are no propagations within the fault tree to a problem event.