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:
Jun. 22, 2004
Filed:
Feb. 09, 2001
Peter Stegmaier, Ponte Capriasca, CH;
Parvis Hassan-Zade, Morcote, CH;
Datamars SA, Bedano-Lugano, CH;
Abstract
A transponder includes a data memory and a mechanism for contactless interaction with a base station. The transponder is brought ( ) into an active field of the base station. Before the transponder is deactivated ( ) by the base station by the transfer of a command signal ( ), the authorization of the base station for deactivation ( ) is checked ( ). Before the transfer of the command signal ( ) an admission signal which contains first admission information is transmitted ( ) from the base station to the transponder. The first admission information with second admission information stored in the data memory is processed by the transponder into authorization information. Based on the authorization information it is decided ( ) whether the command signal is accepted ( ) or rejected ( ). Thus the transponder while keeping secret the data present in the transponder may be reliably deactivated ( ) or reactivated.