WO2007106313A3 - Rfid tag clock synchronization - Google Patents

Rfid tag clock synchronization Download PDF

Info

Publication number
WO2007106313A3
WO2007106313A3 PCT/US2007/004695 US2007004695W WO2007106313A3 WO 2007106313 A3 WO2007106313 A3 WO 2007106313A3 US 2007004695 W US2007004695 W US 2007004695W WO 2007106313 A3 WO2007106313 A3 WO 2007106313A3
Authority
WO
WIPO (PCT)
Prior art keywords
rfid tag
transmission
rfid
clock signal
clock
Prior art date
Application number
PCT/US2007/004695
Other languages
French (fr)
Other versions
WO2007106313A2 (en
Inventor
Joshua Posamentier
Original Assignee
Intel Corp
Joshua Posamentier
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 Intel Corp, Joshua Posamentier filed Critical Intel Corp
Publication of WO2007106313A2 publication Critical patent/WO2007106313A2/en
Publication of WO2007106313A3 publication Critical patent/WO2007106313A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object

Abstract

A radio frequency identification (RFID) reader may modulate a clock signal onto the carrier wave that it transmits to one or more RFID tags, and maintain that clock signal throughout all or most of its transmission (which in some embodiments may also be modulated additionally for the transmission of data). An RFID tag receiving that signal may synchronize its own internal clock to that received clock signal, and use its own internal clock as a reference clock for its own transmission. By continuing to synchronize on the clock signal from the RFID reader, the RFID tag's transmission data rate may be prevented from drifting excessively.
PCT/US2007/004695 2006-03-01 2007-02-22 Rfid tag clock synchronization WO2007106313A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/366,788 2006-03-01
US11/366,788 US20070205871A1 (en) 2006-03-01 2006-03-01 RFID tag clock synchronization

Publications (2)

Publication Number Publication Date
WO2007106313A2 WO2007106313A2 (en) 2007-09-20
WO2007106313A3 true WO2007106313A3 (en) 2008-08-28

Family

ID=38362797

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/004695 WO2007106313A2 (en) 2006-03-01 2007-02-22 Rfid tag clock synchronization

Country Status (4)

Country Link
US (1) US20070205871A1 (en)
CN (1) CN101558328A (en)
TW (1) TW200821954A (en)
WO (1) WO2007106313A2 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7659819B2 (en) * 2005-04-21 2010-02-09 Skyetek, Inc. RFID reader operating system and associated architecture
US20080001752A1 (en) * 2005-04-21 2008-01-03 Skyetek, Inc. System and method for securing rfid tags
US20070046467A1 (en) * 2005-08-31 2007-03-01 Sayan Chakraborty System and method for RFID reader to reader communication
US7570164B2 (en) * 2005-12-30 2009-08-04 Skyetek, Inc. System and method for implementing virtual RFID tags
US20060238303A1 (en) * 2005-04-21 2006-10-26 Sean Loving Adaptable RFID reader
US20070206786A1 (en) * 2005-08-31 2007-09-06 Skyetek, Inc. Rfid security system
US20080022160A1 (en) * 2005-12-30 2008-01-24 Skyetek, Inc. Malware scanner for rfid tags
US20070206797A1 (en) * 2006-03-01 2007-09-06 Skyetek, Inc. Seamless rfid tag security system
US20080042830A1 (en) * 2005-12-30 2008-02-21 Skyetek, Inc. Virtual rfid-based tag sensor
US7791481B2 (en) * 2007-01-22 2010-09-07 Tc License Ltd. Light activated RFID tag
US7859411B2 (en) * 2007-03-30 2010-12-28 Skyetek, Inc. RFID tagged item trajectory and location estimation system and method
US8044804B1 (en) * 2007-06-01 2011-10-25 Hewlett-Packard Development Company, L. P. Localizing a tag using variable signal range
KR100935084B1 (en) 2007-12-17 2009-12-31 한국전자통신연구원 How to sync between readers and tags
KR101208786B1 (en) 2009-03-03 2012-12-05 한국전자통신연구원 Synchronization method between reader and tag
CN102035591B (en) * 2009-09-29 2014-02-05 北京歌尔泰克科技有限公司 Signal periodic synchronization method and system
US9564939B2 (en) * 2010-03-12 2017-02-07 Sunrise Micro Devices, Inc. Power efficient communications
US8472560B2 (en) * 2010-11-02 2013-06-25 Securekey Technologies Inc. Apparatus and method for detecting RFID signals
CN103366213B (en) * 2012-03-31 2016-08-03 华矽半导体股份有限公司 Active electric subtab and method for modulating signal thereof
US9727767B2 (en) 2013-03-12 2017-08-08 Nxp B.V. Clock synchronization in an RFID equipped device
US9317796B2 (en) 2014-04-03 2016-04-19 Tyfone, Inc. RF probe alignment with passive tag
US20150286847A1 (en) * 2014-04-03 2015-10-08 Tyfone, Inc. Passive rf tag with multiple conductive coils
US9317723B2 (en) 2014-04-03 2016-04-19 Tyfone, Inc. Passive RF tag with power cycling
US9495628B2 (en) 2014-04-03 2016-11-15 Tyfone, Inc. Passive RF tag with adiabatic circuits
KR102410912B1 (en) * 2015-10-28 2022-06-20 삼성전자주식회사 Contactless communication devices, electronic systems having the same, and method of operating contactless communication devices
US10430783B2 (en) 2016-10-03 2019-10-01 Square, Inc. Transmit phase detection circuit
USD812130S1 (en) 2016-10-28 2018-03-06 Square, Inc. Electronic device
US10886929B2 (en) 2018-05-31 2021-01-05 Wiliot, LTD. Oscillator calibration from over-the-air signals for low power frequency/time references wireless radios
US10700718B2 (en) 2018-07-19 2020-06-30 Wiliot, LTD. Frequency detection for over-the-air calibration of oscillators

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345231A (en) * 1990-08-23 1994-09-06 Mikron Gesellschaft Fur Integrierte Mikroelectronik Mbh Contactless inductive data-transmission system
WO2001050407A1 (en) * 2000-01-06 2001-07-12 Samsys Incorporated A system for multi-standard rfid tags
US20050114326A1 (en) * 2003-11-07 2005-05-26 Smith John S. Methods and apparatuses to identify devices
AU2005227368A1 (en) * 2000-03-01 2005-11-17 Geir Monsen Vavik Transponder, including transponder system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6294997B1 (en) * 1999-10-04 2001-09-25 Intermec Ip Corp. RFID tag having timing and environment modules
JP3927378B2 (en) * 2001-05-22 2007-06-06 株式会社日立製作所 Article management system using interrogator
US6861900B2 (en) * 2001-12-27 2005-03-01 Proxim Corporation Fast timing acquisition for multiple radio terminals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345231A (en) * 1990-08-23 1994-09-06 Mikron Gesellschaft Fur Integrierte Mikroelectronik Mbh Contactless inductive data-transmission system
WO2001050407A1 (en) * 2000-01-06 2001-07-12 Samsys Incorporated A system for multi-standard rfid tags
AU2005227368A1 (en) * 2000-03-01 2005-11-17 Geir Monsen Vavik Transponder, including transponder system
US20050114326A1 (en) * 2003-11-07 2005-05-26 Smith John S. Methods and apparatuses to identify devices

Also Published As

Publication number Publication date
CN101558328A (en) 2009-10-14
TW200821954A (en) 2008-05-16
WO2007106313A2 (en) 2007-09-20
US20070205871A1 (en) 2007-09-06

Similar Documents

Publication Publication Date Title
WO2007106313A3 (en) Rfid tag clock synchronization
EP2299642A3 (en) A method meeting the spectral mask in a radiofrequency identification system and a device therefor
WO2007035863A3 (en) Radio frequency identification tags based on coalition formation
WO2006023601A3 (en) Product identication tag device and reader .
TW200723116A (en) Enhanced controller utilizing RFID technology
WO2007139665A3 (en) Rfid tag with programmable read range
WO2005057238A3 (en) Identification tag and related tag system
GB2437347B (en) Object tracking
WO2008144671A3 (en) Data brokerage system for mobile marketing
WO2007076095A3 (en) Hybrid radio frequency identification (rfid) tag system
WO2006123316A3 (en) Method of securely reading data from a transponder
WO2007013878A3 (en) System and method of transmitting data from an aircraft
HK1098557A1 (en) Radio frequency identification (rfid) system
WO2006070237A3 (en) Ultra wideband radio frequency identification techniques
ATE443965T1 (en) METHOD AND HARDWARE FOR COMMUNICATION WITH BACKSCATTER RFID READERS
IL174225A0 (en) Joint stars embedded data link
WO2007056333A3 (en) Wireless rfid networking systems and methods
DE60120703D1 (en) PASSIVE TRANSPONDER WITH LOW ENERGY CONSUMPTION
HK1131689A1 (en) Expanded compatibility rfid tags
WO2007120610A3 (en) System and method for combining signals on a differential i/o link
DE602007007899D1 (en) WIRELESS COMMUNICATION SYSTEM
WO2008027623A3 (en) Rfid tags with orthogonal communication capabilities, and associated systems
ATE497216T1 (en) LABEL COMMUNICATION DEVICE AND LABEL COMMUNICATION SYSTEM
WO2007015799A3 (en) Method and apparatus for data signal processing in wireless rfid systems
GB2480934A (en) Card reader

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780004104.8

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07751455

Country of ref document: EP

Kind code of ref document: A2