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WO1997008811A3 - Dc-dc converter with integrated fsk modulator - Google Patents

Dc-dc converter with integrated fsk modulator Download PDF

Info

Publication number
WO1997008811A3
WO1997008811A3 PCT/EP1996/003646 EP9603646W WO9708811A3 WO 1997008811 A3 WO1997008811 A3 WO 1997008811A3 EP 9603646 W EP9603646 W EP 9603646W WO 9708811 A3 WO9708811 A3 WO 9708811A3
Authority
WO
WIPO (PCT)
Prior art keywords
converter
clock pulses
fsk modulator
quartz
controlled
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP1996/003646
Other languages
German (de)
French (fr)
Other versions
WO1997008811A2 (en
Inventor
Roland Kueng
Heinrich Zweifel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAGIX AG
Original Assignee
TAGIX AG
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 TAGIX AG filed Critical TAGIX AG
Priority to AU68744/96A priority Critical patent/AU6874496A/en
Publication of WO1997008811A2 publication Critical patent/WO1997008811A2/en
Publication of WO1997008811A3 publication Critical patent/WO1997008811A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

By using quartz-controlled converter clock pulses in a DC-DC converter instead of the inaccurate multivibrator controlled by an RC-timer, the disturbing influence of clock pulses that are inevitably emitted by a converter in a passive transponder system may be transformed into a useful function. By controlling the quartz frequency with dividers, the converter clock pulses may be used as FSK modulation and data may thus be transmitted from the transponder or tag to the reader.
PCT/EP1996/003646 1995-08-17 1996-08-19 Dc-dc converter with integrated fsk modulator Ceased WO1997008811A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU68744/96A AU6874496A (en) 1995-08-17 1996-08-19 Dc-dc converter with integrated fsk modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH235495 1995-08-17
CH2354/95-0 1995-08-17

Publications (2)

Publication Number Publication Date
WO1997008811A2 WO1997008811A2 (en) 1997-03-06
WO1997008811A3 true WO1997008811A3 (en) 1997-04-10

Family

ID=4231829

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003646 Ceased WO1997008811A2 (en) 1995-08-17 1996-08-19 Dc-dc converter with integrated fsk modulator

Country Status (2)

Country Link
AU (1) AU6874496A (en)
WO (1) WO1997008811A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958265A1 (en) 1999-12-05 2001-06-21 Iq Mobil Electronics Gmbh Wireless energy transmission system with increased output voltage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760256A (en) * 1972-07-31 1973-09-18 Us Army Synchronous dc power supply
EP0281142A2 (en) * 1987-03-06 1988-09-07 Omron Tateisi Electronics Co. Article identifying system
EP0596124A1 (en) * 1991-12-04 1994-05-11 Citizen Watch Co. Ltd. Data carrier
WO1995000922A1 (en) * 1993-06-24 1995-01-05 Westinghouse Electric Corporation Identification system and method with passive tag

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760256A (en) * 1972-07-31 1973-09-18 Us Army Synchronous dc power supply
EP0281142A2 (en) * 1987-03-06 1988-09-07 Omron Tateisi Electronics Co. Article identifying system
EP0596124A1 (en) * 1991-12-04 1994-05-11 Citizen Watch Co. Ltd. Data carrier
WO1995000922A1 (en) * 1993-06-24 1995-01-05 Westinghouse Electric Corporation Identification system and method with passive tag

Also Published As

Publication number Publication date
AU6874496A (en) 1997-03-19
WO1997008811A2 (en) 1997-03-06

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