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. 28, 1998
Filed:
Dec. 13, 1995
Applicant:
Inventors:
Bradley W Cain, Longmont, CO (US);
Frederick S Dunlap, Longmont, CO (US);
Joseph F Baldwin, Ft. Collins, CO (US);
Assignee:
National Semiconductor, Santa Clara, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06T / ; G06F / ;
U.S. Cl.
CPC ...
345501 ; 345132 ; 345506 ; 345509 ; 395500 ;
Abstract
A processing system removes the burden of maintaining legacy hardware by employing a system management mode mechanism to provide an environment for virtualizing preexisting memory and I/O space instructions into operations for high resolution raster graphics circuitry, thus maintaining functionality and backwards compatibility with preexisting software.