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:
Jul. 28, 2015
Filed:
Jun. 15, 2012
Philippe Coni, Saint Jean d'Illac, FR;
Yves Sontag, Bordeaux, FR;
Philippe Coni, Saint Jean d'Illac, FR;
Yves Sontag, Bordeaux, FR;
Thales, Inc., Neuilly sur Seine, FR;
Abstract
The general field of the invention is that of touchscreen devices with projected capacitive detection comprising a matrix-form touch pad comprising conductive rows and columns, said pad being linked to control means and electronic reception and analysis means. The control means generate, for each conductive row and column, a first periodic emission voltage emitted at a first working frequency and a second periodic emission voltage emitted at a second discrimination frequency, different from the first frequency. The electronic reception and analysis means are arranged so as to determine, for each row and for each column, the impedance of a first reception voltage at the working frequency and the impedance of a second reception voltage at the discrimination frequency. According to predetermined values, the values of the two impedances are representative of a touch on the touch pad and its location on the row or on the column concerned.