US Patent 7400989 RFID verifier system with grade classification
Patent 7400989 was granted and assigned to Printronix on July, 2008 by the United States Patent and Trademark Office.
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Patent Inventor Names
Lihu M. Chiu0
Theodore A. Chapman0
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Article (+550 characters)
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Patent abstract
An RFID verifier includes a transmit signal strength indicator (TSSI) and a receive signal strength indicator (RSSI). Using the TSSI, the RFID verifier may determine the amount of power an interrogated RFID tag is illuminated with. Similarly, using the RSSI, the RFID verifier may determine the amount of power returned to the RFID verifier by the RFID tag. By processing the returned power and the illuminating power with a transfer function, the RFID verifier may provide an absolute indicia of quality for the interrogated RFID tag.
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US Patent 07400989 RFID verifier system with grade classification US Patent 7400989 RFID verifier system with grade classification
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Patent Number
074009890
Patent Number
74009890
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
074009890
Date of Patent
July 15, 2008
0Patent Application Number
109515730
Date Filed
September 27, 2004
0Official Website
Patent Primary Examiner
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US Patent 07400989 RFID verifier system with grade classification
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07400989
Date of patent
July 15, 2008
Patent application number
10951573
Date Filed
September 27, 2004
Patent primary examiner
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