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. 18, 1976
Filed:
Jun. 23, 1975
Stanley Shu-Ku Hoo, Kingston, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Sensor apparatus for taking position signals from either ignited or extinguished cell positions at intersections of the column and row coordinate conductors of a gas tube display screen associated with an information handling system. The sensor apparatus includes a hand-held stylus having a plurality of spaced plates that capacitively interact with the adjacent row-column conductors as signal potentials are applied thereto by the normal gas panel addressing circuitry. The capacitive interaction of the plates causes signals to be picked up from the row-column conductors, the signals being differentially amplified to give a detect signal of the stylus position on the display which has a high degree of resolution, the detect signal in combination with data from the addressing circuitry giving a row-column (X-Y) coordinate address indication of the stylus on the panel for utilization in any associated information handling system.