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:
May. 01, 2007
Filed:
Nov. 26, 2002
Mitchell A. Bauman, Circle Pines, MN (US);
Joseph S. Schibinger, Phoenixville, PA (US);
Mitchell A. Bauman, Circle Pines, MN (US);
Joseph S. Schibinger, Phoenixville, PA (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A system and method for managing memory data is provided. Data stored within a main memory may be requested by multiple requesters that may include one or more cache memories. When the data is provided by the main memory to a requester, it will be provided in a state that is based on the way the data was recently used by the requesters. For example, if a pattern of read-only usage has been established for the data, the data will be returned to a requester in a shared state. If data that was provided in a shared state must be updated such that the requester is required return to main memory to obtain read/write privileges, the main memory will thereafter provide the data in an exclusive state that allows write operations to be completed. This will continue until a pattern of read-only usage is again established.