04281323 is referenced by 37 patents and cites 8 patents.

A data input device for use in an electrically noisy environment incorporates a plurality of conductive strips, arranged in rows and columns, mounted on a transparent body in front of a display device. Electrical noise is induced constantly in the conductive strips. When an operator places his finger in close association with one or more of the rows and columns, the amplitude of the electrical noise on such strips changes markedly. The change in noise level is detected and used to provide an output identifying the row and/or column in the vicinity of the operator's finger.

Title
Noise responsive data input apparatus and method
Application Number
5/966739
Publication Number
4281323
Application Date
December 5, 1978
Publication Date
July 28, 1981
Inventor
Leonard A Fish
Chicago
IL, US
Charles E Fiterman
Chicago
IL, US
Bradley W Burnett
Hobart
IN, US
Agent
Hill Van Santen Steadman Chiara & Simpson
Assignee
Bank Computer Network Corporation
IL, US
IPC
G06F 3/14
View Original Source