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:
Sep. 20, 1988
Filed:
Oct. 27, 1986
Applicant:
Inventor:
Marc R Hannah, Menlo Park, CA (US);
Assignee:
Silicon Graphics, Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340703 ; 340701 ; 358 30 ;
Abstract
An improvement for providing color information in a raster scanned video display apparatus where color data is stored in a frame buffer for each pixel in addition to color data. The color data is coupled to a crossbar switch to provide several sets of color data at the output of the switch. A multiplexer receives these several sets of color information and selects between them based on the color mode data. This permits the same color code to represent more than a single color. In a display, color in windows may then be generated from different programs, eliminating color-code dependencies between programs.