System and method to identify multiple RFID tags

Details System and method to identify multiple RFID tags System and method to identify multiple RFID tags

2006-03-07

2006-03-07

Zimmerman, Brian (Department: 2635)

Communications: electrical

Selective

Interrogation response

C340S010300, C340S010310, C340S010320, C370S437000, C370S458000

Reexamination Certificate

active

07009495

ABSTRACT:
An RFID system comprises an RFID reader configured to issue an RF command requesting that RF tags identify themselves, and to issue timing information defining a plurality of timeslots; and a plurality of RF tags in selective communication with the reader, the RF tags having respective IDs, respective tags being configured to randomly select a timeslot in which to reply to the RF command, and to issue an RF reply in response to the RF command in the randomly selected timeslot, the RF reply including a frequency pattern to assist in identifying the tag but not the tag's entire ID, different tags having different frequency patterns.

REFERENCES:
patent: 4075632 (1978-02-01), Baldwin et al.
patent: 4352183 (1982-09-01), Davis et al.
patent: 4360810 (1982-11-01), Landt
patent: 5521601 (1996-05-01), Kandlur et al.
patent: 5530702 (1996-06-01), Palmer et al.
patent: 5550547 (1996-08-01), Chan et al.
patent: 5649296 (1997-07-01), MacLellan et al.
patent: 5686902 (1997-11-01), Reis et al.
patent: 5777561 (1998-07-01), Chieu et al.
patent: 5850187 (1998-12-01), Carrender et al.
patent: 5883582 (1999-03-01), Bowers et al.
patent: 5940006 (1999-08-01), MacLellan et al.
patent: 5986570 (1999-11-01), Black et al.
patent: 5995019 (1999-11-01), Chieu et al.
patent: 6002344 (1999-12-01), Bandy et al.
patent: 6091319 (2000-07-01), Black et al.
patent: 6130623 (2000-10-01), MacLellan et al.
patent: 6177861 (2001-01-01), MacLellan et al.
patent: 6236315 (2001-05-01), Helms et al.
patent: 6265962 (2001-07-01), Black et al.
patent: 6275476 (2001-08-01), Wood, Jr.
patent: 6307848 (2001-10-01), Wood, Jr.
patent: 6366260 (2002-04-01), Carrender
patent: 6538563 (2003-03-01), Heng
patent: 6661336 (2003-12-01), Atkins et al.
patent: 2003/0214389 (2003-11-01), Arneson et al.
patent: 2004/0046644 (2004-03-01), Bauhahn
Finkenzeller, Klaus, “Radio-Frequency identification Fundamentals and Applications”,RFID Handbook, Chapter 8, pp. 151-158 (Jan. 2002).
International Standard. ISO/IEC. “Part 2: Mechanisms Using Symmetry Encipherment Algorithms”,Information Technology—Security Techniques—Entity Authentication. @ISO/IEC 9798-2:1999(E). 2nd Ed., pp 1-11 (Jul. 15, 1999).
Agilent Technologies. “Schottky Diode Voltage Doubler. Application Note 956-4”, 2 pages (1999).
U.S. Appl. filed Oct. 2, 2002, entitled “Radio Frequency Identification Device Communications Systems, Wireless Communication Devices. Wireless Communication Systems. Backscatter Communication Methods, RAdi Frequency Identification Device Communication Methods and a Radio Frequency Identification Device”, by Michael A. Hughes and Richard M. Pratt.
U.S. Appl. filed Oct. 2, 2002, entitled “Method of Simultaneously Reading Multiple RAdio Frequency Tags, RF Tag, and RF Reader”, by Emre Ertin, Richard M. Pratt, Michael A. Hughes, Kevin L. Priddy and Wayne M. Lechelt.
U.S. Appl. filed Oct. 2, 2002, entitled “RFID System and Method Including Tag ID Compression”, by Michael A. Hughes and Richard M. Pratt.
U.S. Appl. filed Oct. 2, 2002, entitled “Radio Frequency Identification Devices, Backscatter Communication Device Wake-Up Methods, Communication Device Wake-Up Methods and a Radio Frequency Identification Device Wake-Up Method”, by Richard M. Pratt and Michael A. Hughes.
U.S. Appl. filed Oct. 2, 2002, entitled “Wireless Communication Systems. RAdio Frequency Identification Devices. Methods of Enhancing a Communications Range of a Radio Frequency Identification Device, and Wireless Communication Methods”. by Richard M. Pratt and Steven B. Thompson.
U.S. Appl. filed Oct. 2, 2002, entitled “Wireless Communications Devices, Methods of Processing a Wireless Communication Signal, Wireless Communication Synchronization Methods and a Radio Frequency Identification Device Communication Method”, by Richard M. Pratt and Steven B. Thompson.
U.S. Appl. filed Oct. 2, 2002, entitled “Wireless Communications Systems, Radio Frequency Identification Devices, Wireless Communications Methods, and Radio Frequency Identification Device Communications Methods”, by Richard M. Pratt and Steven B. Thompson.
U.S. Appl. filed Oct. 2, 2002, entitled “A Challenge-Based Tag Authentication Model”, by Michael A. Hughes and Richard M. Pratt.

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