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:
Dec. 03, 1996
Filed:
Nov. 05, 1993
Applicant:
Inventors:
Assignee:
Cirrus Logic, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345190 ; 395507 ;
Abstract
The 'chip set' of a graphics adapter interface card is reduced to a monolithic integrated circuit that includes a programmable analog clock circuit for producing a video memory clock and a video dot clock. A digital graphics adapter controller is responsive to the video memory clock and the video dot clock to produce a video information stream. A random-access memory is responsive to the video information stream to produce a video display information stream, and a digital-to-analog converter is responsive to the video display information stream to convert the video display information stream to analog signals for application to a video display device.