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. 01, 1998
Filed:
Mar. 15, 1996
Applicant:
Inventors:
Philippe Coni, St Jean D'Illac, FR;
Pierre Fagard, Elancourt, FR;
Assignee:
Sextant Avionique, Velizy Villacoublay, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ; G08C / ;
U.S. Cl.
CPC ...
345174 ; 345173 ; 178 18 ; 178 20 ;
Abstract
A tactile designation device comprises a continuous transparent capacitive surface supported at its corners by flexible strips to which there are attached strain gauges, a HF supply source, a series capacitor, a multiplexer, a detection circuit and a computer. The corners of the capacitive surface are connected alternately to the HF voltage, and the voltages measured are compared with a table of values to determine the touch point.