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:
Jan. 29, 1991
Filed:
Mar. 20, 1987
Robert A Shaw, Los Altos, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
The present invention improves the interaction of a virtual memory systems and a garbage collection system, thereby reducing garbage collection effort and improving virtual memory performance. The method includes the steps of: (1) developing a secondary memory (e.g. disk) dirty page map; (2) developing a saved state map from a primary memory (e.g. RAM) dirty page map; (3) using the secondary memory dirty page map and the primary memory dirty page map to effectively reduce the size of the base set; (4) performing a garbage collection routine on at least a segment of the heap based upon the effectively reduced base set; and (5) performing a virtual memory routine using the primary memory dirty page map and the saved state map. The apparatus of the present invention implements the method on a digital computer system with a combination of hardware and software.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile