Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2005-09-20
2005-09-20
Zimmerman, Brian (Department: 2635)
Communications: electrical
Selective
Interrogation response
C340S010200, C340S010300, C340S010340
Reexamination Certificate
active
06946951
ABSTRACT:
The invention provides a system and method for interrogating one or more electronic labels attached to objects, the system including an interrogation device capable of radiating an electromagnetic interrogation signal which contains information in the form of a plurality of symbols, each symbol being represented by a respective time interval between consecutive dips in amplitude of the interrogation signal. The one or more of the electronic labels are capable of detecting and decoding the interrogation signal to recover the symbols, and in response to recovering the symbols generate a reply signal. The reply signal is able to be detected and decoded by the interrogation device. It is envisaged that the invention will find particular use in identifying, sorting, controlling and/or auditing objects having information bearing electronically coded labels.
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Japanese Patent Abstract No. 2000-209122, Published Jul. 28, 2000.
Cole Peter Harold
Grasso Alfio Roberto
Hall David Malcolm
Murfett David Bruce
Lowe Hauptman & Berner LLP
Tagsys Australia Pty Ltd.
Yang Clara
Zimmerman Brian
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