RFID tags circuits and methods for sensing own power to...

Details RFID tags circuits and methods for sensing own power to... RFID tags circuits and methods for sensing own power to...

2007-01-17

2010-06-08

Pham, Toan N (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S010100, C340S870030, C340S007370

Reexamination Certificate

active

07733227

ABSTRACT:
Feasibility of a requested action by a reader is predetermined in an RFID tag based on an available tag power level. A pretest that is designed to consume artificially high levels of power is performed and the power level monitored to determine if a preset condition is met. The pretest may include activation of selected components such as a memory and associated support circuitry. If the preset condition is not met, the requested action is aborted and an error message transmitted to the reader.

REFERENCES:
patent: 5627528 (1997-05-01), Kuznicki
patent: 7019617 (2006-03-01), Pratt et al.
patent: 2006/0176152 (2006-08-01), Wagner et al.
patent: 2008/0100423 (2008-05-01), Geissler et al.
A) Epcglobal, Inc. “Specification for RFID Air Interface-EPC Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID Protocol for Communications at 860 MHz-960 MHz, Version 1.1.0.” (a.k.a. “The Gen 2 Spec”.) EPCglobal Inc., Dec. 17, 2005. http://www.epcglobalinc.org.
(B) Epcglobal Inc. “Specification for RFID Air Interface-EPC Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID Protocol for Communications at 860 MHz-960 MHz, Version 1.0.8.” EPCglobal Inc., Dec. 14, 2004. http://www.epcglobalinc.org.
(C) Declaration of Stacy L. Jones authenticating attached Website Materials as accessed and posted at http://www.autoid.org/SC31/sc—31—wg4—sg3.htm on Sep. 1, 2006.

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