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, 2001
Filed:
Oct. 02, 1997
Applicant:
Inventors:
Chih-Yuan Pei, Saratoga, CA (US);
Kimihiro Sugino, San Jose, CA (US);
Assignee:
Hitachi Micro Systems, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/210 ;
U.S. Cl.
CPC ...
G06F 1/210 ;
Abstract
A memory architecture includes a virtual memory system and a physical memory system. For one mode of operation all memory accesses are performed within the virtual memory system. For a second mode of operation, accesses within a range of shadowed addresses are redirected to the physical memory system. Addresses outside of the range of shadowed addresses are still performed by the virtual memory system.