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:
Sep. 20, 2005
Filed:
Nov. 18, 2002
Peter Harold Cole, West Lakes Shore, AU;
David Malcolm Hall, Lockleys, AU;
Alfio Roberto Grasso, Hectorville, AU;
David Bruce Murfett, Fulham Gardens, AU;
Peter Harold Cole, West Lakes Shore, AU;
David Malcolm Hall, Lockleys, AU;
Alfio Roberto Grasso, Hectorville, AU;
David Bruce Murfett, Fulham Gardens, AU;
Tagsys Australia Pty Ltd., South Australia, AU;
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.