Device for detecting the position of a control member on a touch

Details Device for detecting the position of a control member on a touch Device for detecting the position of a control member on a touch

1988-05-23

1991-05-14

Oberley, Alvin

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

340706, H03K 1796, G01B 2100

Patent

active

050160087

ABSTRACT:
The device in accordance with the invention includes a series of detection areas (2) on the touch-sensitive pad, an analog circuit for applying a detection coefficient to each detection area (2), which coefficient corresponds to the degree the detection area is overlapped by the control member, and determines a median point of the detection areas as weighted by their respective detection coefficients.

REFERENCES:
patent: 3657475 (1972-04-01), Peronneau
patent: 4281323 (1981-07-01), Burnett et al.
patent: 4736191 (1988-04-01), Matzke et al.
Measures Regulation Automatisme, vol. 42, No. 9, Sep. 1977, pp. 69-73; C. Piguet et al.: "Entree de donnees pour montre multifonctionnelle", *p. 72, chapitre 5-p. 73, chapitre 6*.
IBM Technical Disclosure Bulletin, vol. 23, No. 6, Nov. 1980; H. S. Hoffman, Jr.: "Exact Position Detection with Finger Point and Feedback", *En entier*.

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