WO2005048312A3 - Dense-reader rfid system - Google Patents

Dense-reader rfid system Download PDF

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Publication number
WO2005048312A3
WO2005048312A3 PCT/US2004/037668 US2004037668W WO2005048312A3 WO 2005048312 A3 WO2005048312 A3 WO 2005048312A3 US 2004037668 W US2004037668 W US 2004037668W WO 2005048312 A3 WO2005048312 A3 WO 2005048312A3
Authority
WO
WIPO (PCT)
Prior art keywords
integrated circuit
dense
signal
rfid system
rfid integrated
Prior art date
Application number
PCT/US2004/037668
Other languages
French (fr)
Other versions
WO2005048312A2 (en
Inventor
Christopher Diorio
Kurt Sundstrom
Original Assignee
Impinj Inc
Christopher Diorio
Kurt Sundstrom
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Impinj Inc, Christopher Diorio, Kurt Sundstrom filed Critical Impinj Inc
Priority to EP04810767A priority Critical patent/EP1692670A2/en
Publication of WO2005048312A2 publication Critical patent/WO2005048312A2/en
Publication of WO2005048312A3 publication Critical patent/WO2005048312A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs

Abstract

An RFID integrated circuit (14) includes a demodulator (216) to receive a first signal, the first signal having been generated by an RFID reader (12) responsive to detection of a first environmental condition. The RFID integrated circuit (14) further includes a controller (192) to set, based on the first signal, a modulation format for the RFID integrated circuit (14) and to configure the RFID integrated circuit (14) to modulate a backscatter signal according to the modulation format.
PCT/US2004/037668 2003-11-10 2004-11-10 Dense-reader rfid system WO2005048312A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04810767A EP1692670A2 (en) 2003-11-10 2004-11-10 Dense-reader rfid system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US51903103P 2003-11-10 2003-11-10
US60/519,031 2003-11-10
US10/824,049 US7026935B2 (en) 2003-11-10 2004-04-13 Method and apparatus to configure an RFID system to be adaptable to a plurality of environmental conditions
US10/824,049 2004-04-13

Publications (2)

Publication Number Publication Date
WO2005048312A2 WO2005048312A2 (en) 2005-05-26
WO2005048312A3 true WO2005048312A3 (en) 2006-05-04

Family

ID=34556501

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2004/037387 WO2005048612A1 (en) 2003-11-10 2004-11-10 Configurable rfid system for multiple regulatory environments
PCT/US2004/037668 WO2005048312A2 (en) 2003-11-10 2004-11-10 Dense-reader rfid system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2004/037387 WO2005048612A1 (en) 2003-11-10 2004-11-10 Configurable rfid system for multiple regulatory environments

Country Status (3)

Country Link
US (3) US7026935B2 (en)
EP (1) EP1692670A2 (en)
WO (2) WO2005048612A1 (en)

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