ATE295579T1 - Elektronisches identifizierungssystem mit verbesserter empfindlichkeit - Google Patents

Elektronisches identifizierungssystem mit verbesserter empfindlichkeit

Info

Publication number
ATE295579T1
ATE295579T1 AT95923951T AT95923951T ATE295579T1 AT E295579 T1 ATE295579 T1 AT E295579T1 AT 95923951 T AT95923951 T AT 95923951T AT 95923951 T AT95923951 T AT 95923951T AT E295579 T1 ATE295579 T1 AT E295579T1
Authority
AT
Austria
Prior art keywords
coil
alternating magnetic
capacitor
reader
magnetic field
Prior art date
Application number
AT95923951T
Other languages
English (en)
Inventor
Michael L Beigel
Robert E Malm
Nathaniel Polish
Steven R Frank
Original Assignee
Avid Identification Syst Inc
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 Avid Identification Syst Inc filed Critical Avid Identification Syst Inc
Application granted granted Critical
Publication of ATE295579T1 publication Critical patent/ATE295579T1/de

Links

Classifications

    • 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
    • G06K19/0726—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 the arrangement including a circuit for tuning the resonance frequency of an antenna on the record carrier
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Near-Field Transmission Systems (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Cash Registers Or Receiving Machines (AREA)
AT95923951T 1994-06-20 1995-06-19 Elektronisches identifizierungssystem mit verbesserter empfindlichkeit ATE295579T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/262,157 US6472975B1 (en) 1994-06-20 1994-06-20 Electronic identification system with improved sensitivity
PCT/US1995/007735 WO1995035609A1 (en) 1994-06-20 1995-06-19 Electronic identification system with improved sensitivity

Publications (1)

Publication Number Publication Date
ATE295579T1 true ATE295579T1 (de) 2005-05-15

Family

ID=22996390

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95923951T ATE295579T1 (de) 1994-06-20 1995-06-19 Elektronisches identifizierungssystem mit verbesserter empfindlichkeit

Country Status (9)

Country Link
US (3) US6472975B1 (de)
EP (1) EP0766893B1 (de)
AT (1) ATE295579T1 (de)
AU (1) AU703914B2 (de)
CY (1) CY2536B1 (de)
DE (1) DE69534200T2 (de)
DK (1) DK0766893T3 (de)
ES (1) ES2243938T3 (de)
WO (1) WO1995035609A1 (de)

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Also Published As

Publication number Publication date
EP0766893B1 (de) 2005-05-11
DE69534200T2 (de) 2006-02-23
US7737821B2 (en) 2010-06-15
EP0766893A1 (de) 1997-04-09
US20030102960A1 (en) 2003-06-05
DE69534200D1 (de) 2005-06-16
DK0766893T3 (da) 2005-08-22
AU2864895A (en) 1996-01-15
CY2536B1 (en) 2006-06-28
US6472975B1 (en) 2002-10-29
AU703914B2 (en) 1999-04-01
ES2243938T3 (es) 2005-12-01
EP0766893A4 (de) 2000-08-02
US9430728B2 (en) 2016-08-30
WO1995035609A1 (en) 1995-12-28
US20100182127A1 (en) 2010-07-22

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