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:
May. 05, 1998
Filed:
Dec. 11, 1996
Applicant:
Inventors:
Assignee:
VTech Electronics, Ltd., , HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345118 ; 345120 ; 395134 ;
Abstract
A graphic video display system including at least one graphic layer having sizable, positionable windows and programmable priority values the sprites having fixed priority values. Portions of graphic layer windows and sprites which overlap with a current horizontal scan line of a video display are written to a line buffer. Overlapping objects are resolved by writing portions of objects overlapping the current horizontal scan line to the line buffer in order of the priority values of the objects.