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:
Jul. 07, 1998
Filed:
May. 30, 1996
Applicant:
Inventors:
Alan David Berenbaum, New York, NY (US);
Tor E Jeremiassen, Somerset, NJ (US);
Assignee:
Lucent Technologies, Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
711137 ; 395343 ; 395585 ;
Abstract
A history-based prefetch cache which includes a time queue. The time queue correlates past events with cache misses in a microprocessor. The time queue is set to N cycles, N being a predetermined, arbitrary or programmable amount. The prefetch cache is a prefetch target buffer which receives inputs from a time queue and a cache and determines if an event is present in the cache. If an address is not present in the cache it is prefetched based on past events and inserted into the prefetch target buffer so that the microprocessor will not miss it the next time.