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:
Oct. 29, 1985
Filed:
Jun. 29, 1982
Danny B Convis, Washington Grove, MD (US);
Paul J Grimm, Clarksburg, MD (US);
Martin A Reed, Rockville, MD (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for compactly storing and reproducing script and graphic data from a computer input device. The computer input device sends a time sequence stream of x,y coordinates indicating graphic character locations on the input device. The first coordinate point of the graphic data is stored. Subsequent points are buffered until a reversal in the coordinate magnitude direction is detected with regard to either coordinate axis. This point is taken as a sample point and terminates a buffered segment and starts a new buffered segment. Each segment of the graphic character is approximated by a circular arc segment which is retained by storing the horizontal displacement to the mid-point of the arc segment along with the x and y displacements to the ending point of the segment. The retained information is sufficient to reproduce the input script or graphic for display, print, or manipulation. This is accomplished by mathematically regenerating the arc segments in the same sequence as they were originally created.