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. 26, 1985
Filed:
May. 31, 1983
Applicant:
Inventor:
Lawrence K Stephens, Charlottesville, VA (US);
Assignee:
International Business Machines Corp., Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364900 ;
Abstract
A personal computer having an interactive all points addressable display terminal (44) and a cursor positioning device (52) and provided with apparatus for facilitating the generation of a graphics display using cursor characters selected from a table of cursor characters is capable of clearly demarking the currently selected cursor character from characters previously fixed at various points on the all points addressable display. This is accomplished by exclusive ORing the selected cursor character data with the corresponding data in the all points addressable display at the current position of the selected cursor character.