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:
Aug. 20, 2002
Filed:
Jun. 03, 1999
Frederick Harrison Fischer, Macungle, PA (US);
Vladimir Sindalovsky, Perkasie, PA (US);
Scott A. Segan, South Whitehall Township, Lehigh County, PA (US);
Agere Systems Guardian Corp., Orlando, FL (US);
Abstract
A flexible memory overlaying apparatus and method stores repeatedly referenced information, e.g, common global variables, common code segments, interrupt service routines, and/or any other user or system definable information, in spare addressable circuits accessed by a memory aliasing or overlaying module. The memory aliasing module monitors (or snoops) memory access by a processor to redirect access to certain appropriate addressable circuits to provide faster access to the information than would be available in an access made from main memory. The memory overlaying apparatus and method provides an efficient context switching, e.g., during an interrupt, enables a reduction in the size of instruction code requirements, and helps avoid the occurrences of cache misses, and/or thrashing between cached pages.