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:
Apr. 11, 2006
Filed:
Dec. 19, 2001
Marc Degrauwe, Chez-le-Bart, CH;
Thierry Roz, Hauts-Geneveys, CH;
Olivier Desjeux, Le Landeron, CH;
EM Microelectronic - Marin SA, Marin, CH;
Abstract
There is disclosed a system for detecting the passage of persons or objects through an entry-exit () to a delimited space (), including (i) a detection device including transmission means () for transmitting different first and second electromagnetic signals (a, b) in respectively first and second communication regions (A, B) spatially separated from each other and partially overlapping, (ii) portable electronic units () intended to be fitted to said persons or objects and including reception means for said first and second electromagnetic signals, and (iii) means for detecting the direction of passage, through said entry-exit, of a person or an object fitted with a portable electronic unit. Each portable electronic unit includes amplitude measuring means for determining the reception amplitude of said first and second electromagnetic signals and comparator means for comparing the reception amplitude of the first and second electromagnetic signals so as to determine which of these two signals has the highest amplitude.