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. 03, 1995
Filed:
Mar. 26, 1992
Applicant:
Inventors:
Jeffrey A Walck, Lebanon, NJ (US);
Christopher D Coley, Elsmere, DE (US);
Donald W Kugler, Jr, Frenchtown, NJ (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345185 ; 345132 ;
Abstract
A video controller board for supporting AX Japanese modes and enhanced VGA modes. The board includes two EGA video controllers to support the AX standard and a VGA video controller to support the enhanced VGA standard. Video memory sufficient to support the AX standard is shared by the VGA and EGA controllers. An interface renders the diverse protocols of the VGA and EGA controllers compatible with the shared memory so that each controller sees the memory in a configuration in accordance with its own protocol.