Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2007-10-23
2007-10-23
Hess, Daniel (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S375000, C340S010200, C340S010300, C340S572100
Reexamination Certificate
active
10688535
ABSTRACT:
A system and method is provided for minimizing the unwanted re-negotiation of passive RFID tags. Each tag stores a confirmed read flag to indicate whether the tag has been previously read. During subsequent interrogations of the tag population, the reader has the capability to address all tags in a tag population or to address only unread tags. When addressing all tags, the reader sends a symbol causing all tags to ignore their confirmed read flag value. Each tag may also clear its confirmed read flag when this symbol is received. When addressing only unread tags, the reader sends a symbol causing each tag to evaluate its confirmed read flag value. Those tags that have a confirmed read flag value indicating “read” will enter dormant state and will not be re-negotiated. Those tags that have a confirmed read flag value indicating “not read” will continue to communicate with the reader.
REFERENCES:
patent: 5124699 (1992-06-01), Tervoert et al.
patent: 5345231 (1994-09-01), Koo et al.
patent: 5525992 (1996-06-01), Froschermeier
patent: 5537105 (1996-07-01), Marsh et al.
patent: 5856788 (1999-01-01), Walter et al.
patent: 5995019 (1999-11-01), Chieu et al.
patent: 6107910 (2000-08-01), Nysen
patent: 6265962 (2001-07-01), Black et al.
patent: 6404325 (2002-06-01), Heinrich et al.
patent: 6433671 (2002-08-01), Nysen
patent: 6531957 (2003-03-01), Nysen
patent: 6580358 (2003-06-01), Nysen
patent: 6724297 (2004-04-01), Vacherand et al.
patent: 6950009 (2005-09-01), Nysen
patent: 2002/0024422 (2002-02-01), Turner et al.
patent: 2002/0149481 (2002-10-01), Shanks et al.
patent: 2002/0152044 (2002-10-01), Shanks et al.
patent: 2002/0167405 (2002-11-01), Shanks et al.
patent: 2003/0052161 (2003-03-01), Rakers et al.
patent: 2003/0137400 (2003-07-01), Heinrich et al.
patent: 2004/0036575 (2004-02-01), Patterson et al.
patent: 2004/0113790 (2004-06-01), Hamel et al.
patent: 2004/0134984 (2004-07-01), Powell et al.
patent: 2005/0104719 (2005-05-01), Ramamurthy et al.
International Search Report from the International Searching Authority, issued Jul. 14, 2004 for Appl. No. PCT/US03/33041, 8 pages.
Bandy William R.
Powell Kevin J.
Shanks Wayne E.
Hess Daniel
Sterne Kessler Goldstein & Fox P.L.L.C.
Symbol Technologies Inc.
Trail Allyson N
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