UTILIZATION OF MOTION AND SPATIAL IDENTIFICATION IN RFID SYSTEMS
First Claim
1. A radio frequency identification system comprisinga load transporter having a load receiving space for receiving a radio frequency identification tagged item with a true tag, moved from an external region external to the load receiving space to the load receiving space of the load transporter;
- a radio frequency identification reader system for taking tag readings during movement of the true tag along a path from the external region to the load receiving space of the load transporter; and
a processing system having true tag motional information as to predetermined or measured movement of the true tag along said path from the external region to the load receiving space, and comparing tag motional data based on the tag readings with the true tag motional information to establish whether the tag readings represent a true tag moving along said path to the load receiving space or represent an extraneous tag.
1 Assignment
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Accused Products
Abstract
In one aspect where a load or a subset of one or more tags is in motion relative to an RFID reader system, the RFID system obtains tag readings and derives tag scalar or vector motional data e.g. tag velocity, tag acceleration, and/or rate of change of tag acceleration which can be compared to known tag motional information to distinguish true tags of interest from false positives which are unavoidably also within the field of the reader system. An antenna system may also make readings during distinctive movement patterns of true tags, such as vertical or arcuate movement and utilize computed tag motional data based on the tag readings to distinguish true tags from false positives. Two components of the RFID system may communicate information on identified tags, and/or interact (e.g. by silencing tags), so as to cooperate in identifying true positive tags.
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Citations
36 Claims
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1. A radio frequency identification system comprising
a load transporter having a load receiving space for receiving a radio frequency identification tagged item with a true tag, moved from an external region external to the load receiving space to the load receiving space of the load transporter; -
a radio frequency identification reader system for taking tag readings during movement of the true tag along a path from the external region to the load receiving space of the load transporter; and a processing system having true tag motional information as to predetermined or measured movement of the true tag along said path from the external region to the load receiving space, and comparing tag motional data based on the tag readings with the true tag motional information to establish whether the tag readings represent a true tag moving along said path to the load receiving space or represent an extraneous tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. (canceled)
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18. In a radio frequency identification system for distinguishing a true radio frequency identification tag from an extraneous tag, said radio frequency identification system comprising:
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a radio frequency identification reader system configured to scan for a radio frequency identification tag within a read zone of the radio frequency identification reader system and producing tag readings therefrom, wherein the read zone at least partially overlaps with a true radio frequency identification tag; a data system configured to at least assist in determining tag motional data based on the tag readings of the radio frequency identification reader system taken during movement of the true radio frequency identification tag; and a processing system communicatively coupled to the data system, wherein the processing system is configured to compare the tag motional data based on the tag readings with true tag motional information to determine whether the tag readings are from the true radio frequency identification tag.
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19-31. -31. (canceled)
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32. A method of distinguishing a true radio frequency identification tag of interest from an extraneous tag comprising:
- determining true tag motional information as a function of movement of the true radio frequency identification tag within a read zone of a radio frequency identification reader system;
obtaining tag readings for a radio frequency identification tag in the read zone of a radio frequency identification reader system to monitor movement of a radio frequency identification tag within the read zone;
obtaining radio frequency identification tag motional data from the tag readings; and
determining whether the radio frequency identification tag is the true radio frequency identification tag or is an extraneous tag based upon the tag motional data in comparison to the true tag motional information. - View Dependent Claims (33, 35)
- determining true tag motional information as a function of movement of the true radio frequency identification tag within a read zone of a radio frequency identification reader system;
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34. (canceled)
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36-43. -43. (canceled)
Specification