SE8800724D0 - KOMMUNIKATIONSANLEGGNING - Google Patents

KOMMUNIKATIONSANLEGGNING

Info

Publication number
SE8800724D0
SE8800724D0 SE8800724A SE8800724A SE8800724D0 SE 8800724 D0 SE8800724 D0 SE 8800724D0 SE 8800724 A SE8800724 A SE 8800724A SE 8800724 A SE8800724 A SE 8800724A SE 8800724 D0 SE8800724 D0 SE 8800724D0
Authority
SE
Sweden
Prior art keywords
transponder
signal
coded
harmonic
divided
Prior art date
Application number
SE8800724A
Other languages
Swedish (sv)
Other versions
SE8800724L (en
Inventor
N Molgaard
K C C Fabrin
Original Assignee
Electronic Ident Syst Silkebor
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 Electronic Ident Syst Silkebor filed Critical Electronic Ident Syst Silkebor
Publication of SE8800724D0 publication Critical patent/SE8800724D0/en
Publication of SE8800724L publication Critical patent/SE8800724L/en

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
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K11/00—Marking of animals
    • A01K11/006—Automatic identification systems for animals, e.g. electronic devices, transponders for animals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
    • B61L25/04—Indicating or recording train identities
    • B61L25/045—Indicating or recording train identities using reradiating tags
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/758—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator powered by the interrogation signal
    • 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
    • G06K19/0724—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 being a circuit for communicating at a plurality of frequencies, e.g. for managing time multiplexed communication over at least two antennas of different types
    • 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

Abstract

In a communication system with a transmitter, a transponder transmitting a coded identification signal, and a receiver receiving and recording the coded signal, the transponder performs a frequency conversion prior to the transmission of the coded identification signal. According to the invention the transponder transmits a signal of a frequency in the range of the n th and the (n + 1) th harmonic of the signal received e.g. the 91 DIVIDED 2th harmonic. As a result interference with the harmonics generated by the surroundings under particular circumstances is avoided. A ROM (4) is operated by a supply derived from the received transmission at the transponder. It serves to input data to a modulator (6) modulating the divided-and-multiplied input carrier frequency to produce a data-coded output. <IMAGE>
SE8800724A 1987-03-03 1988-03-02 KOMMUNIKATIONSANLEGGNING SE8800724L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK110387A DK110387A (en) 1987-03-03 1987-03-03 COMMUNICATION SYSTEM

Publications (2)

Publication Number Publication Date
SE8800724D0 true SE8800724D0 (en) 1988-03-02
SE8800724L SE8800724L (en) 1988-09-04

Family

ID=8101033

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8800724A SE8800724L (en) 1987-03-03 1988-03-02 KOMMUNIKATIONSANLEGGNING

Country Status (6)

Country Link
JP (1) JPS63229924A (en)
DE (1) DE3805343A1 (en)
DK (1) DK110387A (en)
GB (1) GB2202108A (en)
NL (1) NL8800514A (en)
SE (1) SE8800724L (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE464844B (en) * 1989-08-23 1991-06-17 Henoch Bengt PROCEDURE TO CONTACT TRANSFER TRANSFER INFORMATION BETWEEN A TRANSMITTER / RECEIVER UNIT AND A TRANSPONDER
JP3018708B2 (en) * 1992-01-31 2000-03-13 神鋼電機株式会社 Wireless communication device
US5317330A (en) * 1992-10-07 1994-05-31 Westinghouse Electric Corp. Dual resonant antenna circuit for RF tags
US5477215A (en) * 1993-08-02 1995-12-19 At&T Corp. Arrangement for simultaneously interrogating a plurality of portable radio frequency communication devices
DE69516568T2 (en) * 1994-03-04 2001-01-04 Ncr Int Inc Extended wireless transmission system with modulated reflection
FR2723238B1 (en) * 1994-07-27 1996-09-13 Suisse Electronique Microtech COMMUNICATION SYSTEM BETWEEN A BASE STATION AND A PASSIVE TRANSPONDER
US6650230B1 (en) 1998-11-19 2003-11-18 Ncr Corporation Modulated backscatter wireless communication system having an extended range
DE10021394A1 (en) * 2000-05-03 2001-11-15 Sab Service Und Fertigung Von Automatic door for passing animal through has detector of identity device worn by animal within defined range of door, actuator for opening door in response to presence of identity device
DE102005061438A1 (en) * 2005-12-22 2007-07-05 Atmel Germany Gmbh Transponder and method for operating a transponder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137847A (en) * 1959-11-04 1964-06-16 Link Aviation Inc Signalling system
GB1085704A (en) * 1964-10-30 1967-10-04 Nat Res Dev Apparatus for detecting an object
GB1297279A (en) * 1969-07-09 1972-11-22
GB1257692A (en) * 1969-07-28 1971-12-22

Also Published As

Publication number Publication date
GB2202108A (en) 1988-09-14
NL8800514A (en) 1988-10-03
GB8803870D0 (en) 1988-03-23
SE8800724L (en) 1988-09-04
DK110387A (en) 1988-09-04
DE3805343A1 (en) 1988-09-15
DK110387D0 (en) 1987-03-03
JPS63229924A (en) 1988-09-26

Similar Documents

Publication Publication Date Title
EP0270274A3 (en) Transponder and interrogator
FI912785A0 (en) RADIO-DATAOEVERFOERINGSSYSTEM, SPECIELLT CELLULAER-RESETELEFONSYSTEM.
MY117523A (en) Multi-mode signal processing
MY112648A (en) Infrared repeater
DK0435607T3 (en) Transponder
AU6000898A (en) Signalling system
CA2081752A1 (en) Transponder System
KR960701544A (en) MULTIPLE-MODULATION COMMUNICATION SYSTEM
DE69027922T2 (en) TRANSPONDER SYSTEM
AU2001270416A1 (en) Low-power passive transponder
KR930017298A (en) Remote transceiver
SE8800724D0 (en) KOMMUNIKATIONSANLEGGNING
AU2001277910A1 (en) System and apparatus for a direct conversion receiver and transmitter
ES518243A0 (en) ELECTROMAGNETIC WAVE EMITTING DEVICE IN RESPONSE TO RECEIVED WAVES.
DE59310124D1 (en) Tuning a receiver depending on the language of the transmitter
GB8709073D0 (en) Coherent optical systems
NO872711D0 (en) IDENTIFICATION DEVICE.
EP1401127A3 (en) Modulation apparatus
KR960016613A (en) Remote control wireless repeater
JPS55166353A (en) Optical fiber transmission system
DE3677625D1 (en) INFORMATION TRANSFER SYSTEM.
JPS6416150A (en) Space propagation optical data transmission and reception system
KR970013852A (en) Wireless data transceiver
EP0172048A3 (en) A method of transmitting digital data by modulating a high frequency signal
TH18356EX (en) A system for transmitting radio signals on liquid level display data. And for converting the received data into volumetric data

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8800724-0

Effective date: 19891020