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:
Jun. 15, 1999
Filed:
Dec. 16, 1996
Philippe Maugars, Ranes, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
The invention provides a system for detecting the presence of an electrically conductive object, the system comprising a first and a second contact (C1 and C2) intended to be short-circuited by said object, and further comprising a control device for the electric potentials of the contacts. In accordance with the invention the control device comprises means for applying a given potential (Vref), referred to as the reference potential, to the second contact (C2) at a high impedance (Z) with respect to the resistance generated by the contact with the conductive object to be detected, and for supplying a signal (CP) indicating that the potential of the second contact (C2) is near the reference potential (Vref).