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. 04, 2008
Filed:
Apr. 01, 2004
Nicolas Pangaud, Valbonne, FR;
Elias Sabbah, Mougins, FR;
Nicolas Pangaud, Valbonne, FR;
Elias Sabbah, Mougins, FR;
ASK S.A., Valbonne, FR;
Abstract
A contactless reading system, wherein a chip card is fixed on a planar support of an object such as a book () for identification by means of the data contained in the chip card, and a mobile reader () provided with an antenna in order to read the data of the card. The antenna of the reader () consists of a small-sized convolution disposed in a series with a large-sized convolution, which are concentric and which have the same winding direction. A maximum value is obtained for the component (H) of the electromagnetic field produced by the antenna parallel to the antenna at a given distance from the antenna. Maximum reception by the chip card of electromagnetic signals emitted by the antenna is obtained when the antenna is disposed in a perpendicular position in relation to the support of the card and at the given distance from the card.