EP 2142946 A1 20100113 - METHOD AND APPARATUS FOR DETECTION OF TRANSPONDER TAGGED OBJECTS
Title (en)
METHOD AND APPARATUS FOR DETECTION OF TRANSPONDER TAGGED OBJECTS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR DETEKTION VON TRANSPONDER-ETIKETTIERTEN OBJEKTEN
Title (fr)
PROCÉDÉ ET APPAREIL PERMETTANT LA DÉTECTION D'OBJETS DOTÉS D'UNE ÉTIQUETTE TRANSPONDEUR
Publication
Application
Priority
US 2007010713 W 20070501
Abstract (en)
[origin: WO2008133634A1] The presence or absence of objects (16) is determined by interrogating or exciting transponders (26) coupled to the objects using pulsed wide band frequency signals. Ambient or background noise is evaluated and a threshold adjusted based on the level of noise. Adjustment may be based on multiple noise measurements or samples. Noise detection may be limited, with emphasis placed on interrogation to increase the signal to noise ratio. Match filtering may be employed. Appropriate acts may be taken if detected noise is out of defined limits of operation, for example shutting down interrogation and/or providing an appropriate indication.
IPC 8 full level
G01V 15/00 (2006.01); A61B 5/00 (2006.01)
CPC (source: EP)
A61B 5/06 (2013.01); G01V 15/00 (2013.01)
Citation (search report)
See references of WO 2008133634A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008133634 A1 20081106; WO 2008133634 A9 20090326; EP 2142946 A1 20100113
DOCDB simple family (application)
US 2007010713 W 20070501; EP 07794509 A 20070501