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. 14, 1991
Filed:
Mar. 03, 1989
Rick A Warp, Menlo Park, CA (US);
Da Vinci Graphics, Inc., Palo Alto, CA (US);
Abstract
A method and apparatus for preparing and printing pen-stroke image information on a raster-type output device. The image is first vectorized, then given one of a number of slope classifications. For vertical vectors and vectors within a predetermined angle of the vertical, only every n'th dot on the vector is printed. For vectors in the next slope class closer to the horizontal, every (n/2)'th dot is printed. For vectors in the next slope class closer to the horizontal, dots nk, nk+m.sub.2, and nk+m.sub.1 are printed, where k is any integer, m.sub.2 is n/4, and m.sub.1 is n/2. For dots in the next slope class closer to the horizontal, every (n/4)'th dot is printed. A novel vector endpoint modification scheme, novel redundant dot removal schemes, and a novel adaptive print speed control are also disclosed.