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:
Jun. 02, 1992
Filed:
Jun. 18, 1990
Applicant:
Inventor:
Douglas C Smith, Rumson, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340707 ; 340706 ;
Abstract
A touch-screen scheme is employed in an arrangement wherein an inquiry and a choice of responses thereto are displayed on a CRT screen. In accordance with this scheme, a first touch-screen device is held against a predetermined spot on the screen. A selection is made by holding a second touch-screen device against the area of the screen corresponding to the desired response. When the electron beam which scans the CRT screen sweeps across the first and second touch-screen devices at different times, the two device generate two signal outputs. The touch-position or the selection is determined based on the time difference between the two signal outputs.