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. 30, 1999
Filed:
Oct. 16, 1997
Byron A Alcorn, Fort Collins, CO (US);
Howard D Stroyan, Fort Collins, CO (US);
Randy L Bailey, Fort Collins, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
An improved method of incorporating a high performance graphics device into a base graphics subsystem of a processor includes two pairs of interface chips. One pair of interface chips is used to transfer pixel data between a base graphics system and the high performance graphics device, while the second pair of interface chips is used to transfer commands between the graphics device and the base graphics system. One of the pair of interface chips that is used to transfer pixel data is coupled to a bus within the base graphics subsystem while the second one of the pair is coupled to the graphics device. With such an arrangement, a high speed interface allows for pixel data to be fed directly to the frame buffer of the graphics subsystem, enabling the windows that are rendered by two different graphics systems to share a frame buffer memory.