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. 07, 1999
Filed:
Feb. 19, 1997
Richard Clark, Seattle, WA (US);
Appian Graphics Corp., Redmond, WA (US);
Abstract
The novel graphics system (10) includes multiple displays (20 and 22) supported by a single frame buffer (18) thereby reducing hardware requirements and costs. The system (10) further includes an operating system driver interface (12), a software driver interface (14) and graphics circuitry (16). In one embodiment, the graphics circuitry (16) includes a graphics chip (34) for providing an analog output (36) and a digital output (38). The digital output (38) is processed by a data reformatter (40) and a digital-to-analog converter (42) to provide an analog signal (44). The invention thus takes advantage of existing mixed output chips to implement a multiple analog CRT monitor system in a cost effective manner.