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. 12, 1987
Filed:
Nov. 01, 1985
Applicant:
Inventors:
Robert G Kable, Dublin, OH (US);
Philip A Schlosser, Columbus, OH (US);
Assignee:
Scriptel Corporation, Columbus, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
178 19 ;
Abstract
An electrographic apparatus or digitizer has a resistive layer with an active area which operates in conjunction with a stylus or other suitable position locator. An a.c. source or alternatively a signal treatment means is connected to the resistive layer through rows of electrodes and position coordinates of the position locator are developed by the apparatus. Voids or discontinuities are formed in the resistive layer to increase the edge-to-edge resistance of the layer and to provide identical edge-to-edge resistances in the x- and the y-coordinate direction for digitizers which are rectangular and non-square.