Radio frequency identification of tagged articles
First Claim
1. A method for the identification and location of radio frequency identification RFID tags having configurations and locations, comprising:
- forming signals for activating selected RFID tags, based on reader antennas and said tags configurations and locations;
transmitting signals for activating of said selected RFID tags in an interrogation zone of a reader;
receiving signals for activating said selected RFID tags in said interrogation zone of a reader;
processing signals for activating said selected RFID tags in said interrogation zone of a reader to determine if tags must be activated;
forming a signal to operate transponder of an activated tag;
transmitting a RFID transponder signal from said activated tags to a reader;
receiving a RFID transponder signal by said reader;
processing an RFID transponder signal by said reader.
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Accused Products
Abstract
The RFID system is for automatic recognition of each one or all of a plurality of objects located within an interrogation zone. It is applicable for stock-taking or control of goods such as food. The objects provided with tags having transponders carrying RFID codes individually are sequentially scanned and activated one by one. Interrogation signals are transmitted to the tags based on the reader antennas and the configurations and locations of the tags. Signals returned from the transponders of the tags are processed for recognizing the locations of the selected tags and the electronic contents of the tags. The operation continues until the recognition and location of all tags in the entire interrogation zone have been completed.
41 Citations
17 Claims
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1. A method for the identification and location of radio frequency identification RFID tags having configurations and locations, comprising:
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forming signals for activating selected RFID tags, based on reader antennas and said tags configurations and locations;
transmitting signals for activating of said selected RFID tags in an interrogation zone of a reader;
receiving signals for activating said selected RFID tags in said interrogation zone of a reader;
processing signals for activating said selected RFID tags in said interrogation zone of a reader to determine if tags must be activated;
forming a signal to operate transponder of an activated tag;
transmitting a RFID transponder signal from said activated tags to a reader;
receiving a RFID transponder signal by said reader;
processing an RFID transponder signal by said reader. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for identification and location of a plurality of RFID tags, comprising:
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means for forming signals for turning on selected RFID tags;
means for transmitting signals for activating of said selected RFID tags in an interrogation zone of a reader;
means for receiving signals for activating said selected RFID tags in said interrogation zone of said reader;
means for processing of signals for activating of said selected RFID tags in said interrogation zone of said reader to determine if tags to be activated;
means for forming signals to operate RFID transponder of an activated tag;
means for transmitting RFID transponder signals to said reader;
means for receiving an RFID transponder signals by said reader; and
means for processing an RFID transponder signals by said reader. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification