EP0048245A1 - Systeme et procede d'indentification d'un article auquel est attachee une etiquette - Google Patents

Systeme et procede d'indentification d'un article auquel est attachee une etiquette

Info

Publication number
EP0048245A1
EP0048245A1 EP81900649A EP81900649A EP0048245A1 EP 0048245 A1 EP0048245 A1 EP 0048245A1 EP 81900649 A EP81900649 A EP 81900649A EP 81900649 A EP81900649 A EP 81900649A EP 0048245 A1 EP0048245 A1 EP 0048245A1
Authority
EP
European Patent Office
Prior art keywords
label
radiation
frequencies
predetermined frequency
range
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.)
Withdrawn
Application number
EP81900649A
Other languages
German (de)
English (en)
Inventor
Malcolm Hutchinson
Peter Dudley
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.)
Polymark International Ltd
Original Assignee
Polymark International Ltd
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 Polymark International Ltd filed Critical Polymark International Ltd
Publication of EP0048245A1 publication Critical patent/EP0048245A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H04B5/266—One coil at each side, e.g. with primary and secondary coils
    • 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
    • G06K19/0672—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 resonating marks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation

Definitions

  • the present invention relates to a system and method for identifying a textile or other type of article to which a lable is attached.
  • a system for identifying ah article to which a lable is attached characterised in that the label comprises means adapted to absorb or respond to radiation of a predetermined frequency or range of frequencies, means for exposing the label to radiation at said predetermined frequency or range of frequencies, and means for detecting the absorption of or response to the radiation by the label.
  • the label comprises a device which is normally in a quiescent state but which when exposed to said radiation of a predetermined frequency or range of frequencies-assumes an excited state
  • the detecting means comprise means for detecting the excitation of the device.
  • the invention also provides a method for identifying an article to which a label is attached; characterised in that the label comprises means adapted to absorb or respond to radiation of a predetermined frequency or range of frequencies, the label is exposed to radiation at said predetermined frequency or range of frequencies, and the absorption of or response to the radiation by the label is detected.
  • the label comprises a device which is normally in a quiescent state but which when exposed to said radiation of a predetermined frequency or range of frequencies assumes an excited state, and the excitation of the device is detected.
  • the device may be magnetically coupled to the means for exposing the label to radiation.
  • the device is in the form of a tuned circuit which may be caused to resonate by placing the circuit near to a coil energised with an AC signal. Oscillation of the tuned circuit changes the current through the coil and this current change can be detected.
  • the device may be fabricated from a material which may be excited by radiation at one frequency to emit radiation at a second frequency.
  • the device may be fabricated from a material which selectively absorbs radiation at said predetermined frequency or frequencies.
  • Fig. 1 shows a label embodying the present invention incorporating a tuned circuit
  • Fig. 2 illustrates the construction of a label embodying the present invention.
  • the resonant frequency of the tuned circuit is determined by the component values of the inductor 2 and the capacitor
  • the label 1 may be identified according to the resonant frequency of the tuned circuit incorporated therein.
  • the resonant frequency of the tuned circuit is determined by bringing the label into close proximity to a coil 5 which is excited by a variable frequency AC generator (not shown).
  • the magnetic flux generated by the coil 5 magnetically couples the coil 5 to the inductor 2, the coil 5 and inductor 2 effectively forming the primary and secondary windings of a transformer.
  • an alternating voltage is induced into the inductor 2.
  • the label corresponds to the resonant frequency of the tuned circuit resonance occurs, which results in the current in the coil 5 increasing significantly, the actual value attained being dependent on the value of resist 4.
  • This increase in current may be detected using known apparatus 6, for example a current meter.
  • the step change in the phase angle between the voltage and current in the coil 5 which occurs at resonance may be used.
  • known apparatus may be used to detect the change in phase.
  • the label may be flexible, and wash and dry clean resistant in use, the circuit is preferably incorporated in or laminated, printed or etched on a flexible substrate which is then sealed or encapsulated within the label as shown in Fig. 2.
  • the label may be rigid or semi-rigid, particularly if its physical dimensions are small.
  • Fig. 2 shows a schematic view of a label 7 applied to an article 8.
  • a substrate 9 comprising the circuit elements is sealed using a lacquer within .the label 7.
  • the label 7 may be coated using an injection moulding process or dip coated or powder coated and sintered.
  • a capacitor may be produced by printing, etching or laminating adjacent layers of conducting and dielectric materials onto the substrate 8.
  • a coil and a resistor may be produced simply by printing, etching or laminating coaductors onto the substrate 8.
  • the label employed in the present invention may usefully comprise a heat transfer or heat sealable element made from a resin system capable of being transferred to a substrate by the application of heat . and pressure.
  • a heat transfer may be made in accordance with one of our previous patents, e.g. British Patents 928 347, 1 201 713, 1 215007, 1 287452, 1 386 392 and 1 523869 and German Published Specification 28 22 411.
  • the label may be inserted into a pouch formed in the article to be labelled. The label could thus be concealed if desired.
  • circuit incorporated into the label need not be as simple as a tuned circuit.
  • band pass, or band stop filters may be incorporated into the label.
  • Active elements such as transistors, diodes and integrated circuits may also be produced on the substrate.
  • a label which incorporates a small receiver/transniitter may be provided. Power may be derived from the voltage induced in a coil on the substrate and a frequency characteristic of the label is transmitted. This arrangement eliminates the need to provide a variable frequency AC generator as a number of receivers each tuned to a characteristic frequency may be used.
  • materials such as pigments may be incorporated into the label which respond by emitting radiation at a characteristic frequency or which selectively absorb radiation at a characteristic frequency when irradiated with for example ultra-violet, infra red or X-ray radiation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Systeme et procede d'identification d'un article auquel est attachee une etiquette, l'etiquette comprenant un dispositif d'absorption ou sensible a une radiation, lequel dispositif est expose a une radiation d'une frequence ou d'un groupe de frequences predetermine. La reponse a ou l'absorption de la radiation est detectee pour identifier l'etiquette et donc l'article auquel elle est attachee.
EP81900649A 1980-03-27 1981-03-26 Systeme et procede d'indentification d'un article auquel est attachee une etiquette Withdrawn EP0048245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8010357 1980-03-27
GB8010357 1980-03-27

Publications (1)

Publication Number Publication Date
EP0048245A1 true EP0048245A1 (fr) 1982-03-31

Family

ID=10512433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81900649A Withdrawn EP0048245A1 (fr) 1980-03-27 1981-03-26 Systeme et procede d'indentification d'un article auquel est attachee une etiquette

Country Status (2)

Country Link
EP (1) EP0048245A1 (fr)
WO (1) WO1981002801A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6094133A (en) * 1998-01-22 2000-07-25 Sensor Technos Co., Ltd. Method of displaying information by using an LC resonance tag
FR2883087B1 (fr) * 2005-03-14 2007-05-18 K2 Technologies Sarl Dispositif pour l'identification et le comptage d'articles en vrac

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6603007A (fr) * 1965-03-08 1966-09-09
FR1601522A (fr) * 1968-12-26 1970-08-24
US3521280A (en) * 1969-01-16 1970-07-21 Gen Res Corp Coded labels
GB1297279A (fr) * 1969-07-09 1972-11-22
US3816708A (en) * 1973-05-25 1974-06-11 Proximity Devices Electronic recognition and identification system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8102801A1 *

Also Published As

Publication number Publication date
WO1981002801A1 (fr) 1981-10-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820607

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HUTCHINSON, MALCOLM

Inventor name: DUDLEY, PETER