Datamars Sa

Parvis Hassan-Zade

Takamasa Ishii

Jean-Marc Jobin

Roberto Dotti

Peter Arnold Stegmaier

Apparatus including a conveyor for identifying a plurality of items each of which has a radio frequency transponder. A three dimensional (3D) radio frequency antenna is positioned on one side of the conveyor. The conveyor has a movable part for moving the items into and out of the antenna such that the items when in the antenna are completely surrounded by the antenna. A reader sends interrogation signals to the transponders via the antenna and reads identification information from the transponders. The 3D antenna includes a plurality of coils mounted in a 3D arrangement such as to provide a 3D reading field in which all transponders in the reading field may be interrogated. The 3D antenna also includes noise compensation coils at opposite ends of the reading field to minimize electromagnetic radiation from the antenna and also minimize noise from external sources affecting reading of the transponders. The radio frequency transponder includes a housing a substrate within the housing and a printed circuit board mounted on the substrate. A coil is mounted on the substrate such as to be spaced therefrom. The substrate, the printed circuit board, the integrated circuit chip and the coil are encapsulated with the spacing of the coil from the substrate enabling the encapsulant to completely surround the coil.

Method and apparatus for identifying a set of multiple items on a conveyor system with multiread transponders

A three dimensional (3D) radio frequency antenna is positioned on one side of a conveyor which has a movable part for moving items, each of which has a radio frequency transponder, into and out of the antenna such that the items when in the antenna are completely surrounded by the antenna. The 3D antenna includes a plurality of coils which provide a 3D reading field in which all transponders in the reading field may be interrogated and also includes noise compensation coils at opposite ends of the reading field to minimize electromagnetic radiation from the antenna and also minimize noise from external sources. The radio frequency transponder includes a housing, a substrate within the housing, an integrated circuit and a printed circuit board mounted on the substrate. A coil is mounted on the substrate such as to be spaced therefrom with the spacing of the coil from the substrate enabling the encapsulant to completely surround the coil.

Method and apparatus for identifying a set of multiple items on conveyor system with multiread transponders

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.

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Morcote, Switzerland

Parvis Hassan-Zade