Unisys Corporation

Robert K Liermann

Robert J Sliwa

James W Thompson

Anthony P Matyok

Clark C Kogen

Philip M Hoffman

William Stratton

Jeffery A Stell

Andrew David Milligan

Jessica A Paragas

Tatyana Martsun

Phillip M Hoffman

Steven D Schatz

Jeffrey A Stell

Eugene W Troxell

A computing system using a persistent, unique identifier may be used to authenticate the system that ensures software and configurations of systems are properly licensed while permitting hardware components to be replaced. The persistent, unique system identifier may be coupled to serial numbers or similar hardware identifiers of components within the computing system while permitting some of the hardware components to be deleted and changed. When components that are coupled to the persistent, unique identifier are removed or disabled, a predefined time period is provided to update the coupling of the persistent, unique identifier to alternate hardware component in the system.

System and method for providing a mechanism to virtualize a perpetual, unique system identity on a partitioned computer system

Mechanisms and methods for traversing trees are disclosed. A novel data structure for modeling a node that includes a unique node counter also is described. In certain embodiments of the inventions the unique node counter is a timestamp of sufficient granularity to render each timestamp in the tree unique. A node counter, in conjunction with the lineage of a specified continuation node may be used to locate an appropriate starting point within a tree in a continuation call when the specified continuation node no longer exists in the tree.

Mechanism for continuable calls to partially traverse a dynamic general tree

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Downington, PA, United States of America

Robert K Liermann