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:
Mar. 20, 2012
Filed:
Aug. 08, 2007
Gregor Ponert, Salzburg, AT;
Rudolf Golser, Hallein, AT;
Gregor Ponert, Salzburg, AT;
Rudolf Golser, Hallein, AT;
SkiData AG, Salzburg, AT;
Abstract
An access control system has at least two antenna coils (and) arranged one behind the other at an entrance lane () and connected to a reading device (), which with a capacitance () form an oscillating circuit (). Here either the one oscillating circuit () with the in entrance direction () first antenna coil () or the other oscillating circuit with the second antenna coil () is actuated by the reading device (), in order to read out data for the purpose of access authorization from a transponder () which is carried by a user and has a transponder coil () coupleable with the antenna coils (to). The oscillating circuit () not actuated by the reading device () is detuned or short-circuited.