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:
Jul. 23, 2002
Filed:
May. 28, 1999
Anatoli Stobbe, D-30890 Barsinghausen, DE;
Holger Merk, D-30890 Barsinghausen, DE;
Other;
Abstract
A process and configuration used therein for detecting a transponder in a detection region, structured into two adjacent overlapped cells, provide for detecting the transponder with reference to a particular one cell of the two cells. The detecting process includes the steps of: providing in each of the cells a field with a detectable field characteristic; acquiring the field characteristic of a first of the cells using a sensing unit of the transponder; cyclically transmitting a response signal from a transmitting unit of the transponder containing the acquired field characteristics; receiving the response signal by a receiver which contains response signal information regarding the acquired field characteristic, namely that of the field of the first cell, that of the field of the adjacent cell or an unknown field characteristic; evaluating the response signal with respect to the information of the acquired field characteristic contained in the receiver; comparing the acquired field characteristic with the field characteristics provided in the cells; determining the possible position(s) of the transponder on the basis of the results of the performed comparison; and verifying a position determination, wherein, after detection of a transponder in the first cell, the field characteristic of the adjacent cell is adjusted such that it differs from that of the first cell.