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:
Nov. 06, 2001
Filed:
Dec. 18, 1998
Robert C. Gulick, Glenmoore, PA (US);
Douglas E. Morrissey, Allentown, PA (US);
Charles Raymond Caldarale, Minneapolis, MN (US);
Hans Christian Mikkelsen, Afton, MN (US);
Bruce Alan Vessey, Downingtown, PA (US);
Sharon M Mauer, West Chester, PA (US);
Craig F. Russ, Berwyn, PA (US);
Eugene W. Troxell, King of Prussia, PA (US);
Maureen P. Connell, Norristown, PA (US);
James R. Hunter, Downingtown, PA (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A computer system comprises a plurality of processing modules that can be configured into different partitions within the computer system, and a main memory. Each partition operates under the control of a separate operating system. At least one shared memory window is defined within the main memory to which multiple partitions have shared access, and each partition may also be assigned an exclusive memory window. Program code executing on different partitions enables those partitions to communicate with each other through the shared memory window. Means are also provided for mapping the physical address space of the processors in each partition to the respective exclusive memory windows assigned to each partition, so that the exclusive memory windows assigned to each partition appear to the respective operating systems executing on those partitions as if they all start at the same base address.