05184115 is referenced by 103 patents and cites 4 patents.

In an arrangement wherein an inquiry and a choice of respones thereto are displayed on a CRT screen, a selection is made by holding a touch-screen device against the area of the screen corresponding to the desired response. Such a touch-screen device is designed to have an inductive coil in its tip. When an electron beam which scans the CRT screen sweeps across the tip of the touch-screen device, an electrical signal is induced on the coil. The touch-position or the selection is determined based on a knowledge of the position of the electron beam on the screen at the time of the electrical signal induction.

Title
Touch-screen arrangement
Application Number
7/532721
Publication Number
5184115
Application Date
June 4, 1990
Publication Date
February 2, 1993
Inventor
Douglas C Smith
Rumson
NJ, US
Edward P Black
Salt Lake City
UT, US
Agent
David R Padnes
Assignee
AT&T Bell Laboratories
NJ, US
IPC
G09G 3/02
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