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:
Nov. 12, 1996
Filed:
Apr. 27, 1992
Applicant:
Inventors:
Vlad Bril, Campbell, CA (US);
Boyd G Pett, San Jose, CA (US);
Assignee:
Cirrus Logic, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345132 ; 345150 ; 395788 ;
Abstract
Modifications to a prior art system known as video graphics adapter (VGA) for displaying color images on a monitor attached to a personal computer. The modifications provide the following four enhancements to a standard VGA system: (i) user definable border color; (ii) automatic powering down of the digital analog converter (DAC) component of the VGA RAMDAC and monitor sense comparator for LCD monitors when the RAMDAC is not in use; (iii) stopping of the RAMDAC clock for LCD monitors when the RAMDAC is not in use; and (iv) true color support.