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:
Sep. 30, 1986
Filed:
Jan. 12, 1983
Robert Poujois, Sinard, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
A capacitive keyboard structure, the keyboard comprising on one face of a substrate a series of static sensitive keys each associated with a pair of electrodes: an emitting electrode excited sequentially by an alternating signal supplied by an emitting line and a receiving electrode which is coupled capacitively to the emitting electrode by the corresponding key and on which a receiving line collects the variations of the signal as an effect of possible presence of a user's finger in the neighborhood of the key, wherein the electrodes of one same type are disposed on such face, the electrodes of the other type being disposed on the other face of the substrate, thus avoiding the crossing of the emitting and receiving lines. Application to the control of an industrial or publicly available apparatus.