RADIO FREQUENCY IDENTIFICATION SYSTEM AND RELATED OPERATING METHODS
First Claim
1. A method of operating a radio frequency identification (RFID) system, the method comprising:
- generating an RFID interrogation signal with an RFID reader of the RFID system;
obtaining, in response to generating the RFID interrogation signal, at least one RFID tag response signal at the RFID reader, the at least one RFID tag response signal conveying tag data; and
providing at least some of the tag data to a mobile device.
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Accused Products
Abstract
A method of operating a radio frequency identification (RFID) system is provided. The method interrogates RFID tags with an RFID reader and provides at least some of the collected tag data to a mobile device that is unable to communicate with RFID tags using the over-the-air interface. In some situations, the RFID system obtains the current location of the mobile device and determines the location of a target tag relative to the current location of the mobile device. Locating the target tag in this manner involves the interrogation of a reference tag located at the mobile device, along with the target tag, using one RFID reader. The position of the target tag relative to the reference tag is calculated in response to the tag response signals obtained from the target and reference tags. Moreover, location of the target tag can be independently determined relative to the location of a mobile reader, by using a reference tag attached to a fixed reader or to the mobile reader.
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Citations
22 Claims
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1. A method of operating a radio frequency identification (RFID) system, the method comprising:
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generating an RFID interrogation signal with an RFID reader of the RFID system; obtaining, in response to generating the RFID interrogation signal, at least one RFID tag response signal at the RFID reader, the at least one RFID tag response signal conveying tag data; and providing at least some of the tag data to a mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of operating a radio frequency identification (RFID) system, the method comprising:
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receiving a request to locate a particular item of interest having a target RFID tag associated therewith, the request originating at a mobile device; in response to receiving the request, interrogating the target RFID tag with an RFID reader of the RFID system to obtain an RFID tag response signal from the target RFID tag; obtaining a current location of the mobile device; and determining a location of the target RFID tag relative to the current location of the mobile device. - View Dependent Claims (15, 16, 17, 18, 22)
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19. A radio frequency identification (RFID) system comprising:
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an RFID reader to interrogate RFID tags and to obtain RFID tag response signals that convey tag data; and an RFID system controller to obtain a current location of a mobile device, filter the tag data in accordance with the current location of the mobile device, and send filtered tag data to the mobile device. - View Dependent Claims (20, 21)
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Specification