Noise responsive data input apparatus and method

Details Noise responsive data input apparatus and method Noise responsive data input apparatus and method

1978-12-05

1981-07-28

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340365C, 340562, G06F 314

Patent

active

042813239

ABSTRACT:
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.

REFERENCES:
patent: 3482241 (1969-12-01), Johnson
patent: 3673589 (1972-06-01), Barrett et al.
patent: 3757322 (1973-09-01), Barkan et al.
patent: 3947696 (1976-03-01), Larson et al.
patent: 4037221 (1977-07-01), Alexander
patent: 4090092 (1978-05-01), Serrano
patent: 4110749 (1978-08-01), Janko et al.
patent: 4145748 (1979-03-01), Eichelberger et al.

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