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:
Feb. 18, 2003
Filed:
Jul. 11, 2000
Jochen Liedtke, Bruchsal-Obergrombach, DE;
Marc Alan Auslander, Millwood, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
There is provided a method for representing unvalues in an unvalue-unaware memory of a computer processing system. The method includes the step of selecting arbitrary bit combinations to represent the unvalues, upon startup of the system. Upon performing a read operation from the memory, a read value is interpreted as an unvalue, when the read value matches at least one of the bit combinations. Upon performing a write operation to the memory, a value-unvalue-collision exception is raised, when a valid value is written to the memory and the valid value matches at least one of the bit combinations.