FR2412893A1 - Procede de reconnaissance d'objets - Google Patents

Procede de reconnaissance d'objets

Info

Publication number
FR2412893A1
FR2412893A1 FR7738997A FR7738997A FR2412893A1 FR 2412893 A1 FR2412893 A1 FR 2412893A1 FR 7738997 A FR7738997 A FR 7738997A FR 7738997 A FR7738997 A FR 7738997A FR 2412893 A1 FR2412893 A1 FR 2412893A1
Authority
FR
France
Prior art keywords
batch
marked
bands
coil receiving
detection
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.)
Granted
Application number
FR7738997A
Other languages
English (en)
Other versions
FR2412893B1 (fr
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.)
Metalimphy SA
Original Assignee
Metalimphy SA
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 Metalimphy SA filed Critical Metalimphy SA
Priority to FR7738997A priority Critical patent/FR2412893A1/fr
Priority to JP15048278A priority patent/JPS5488029A/ja
Priority to US05/967,303 priority patent/US4195771A/en
Priority to DE2855396A priority patent/DE2855396C3/de
Priority to IT69942/78A priority patent/IT1203211B/it
Publication of FR2412893A1 publication Critical patent/FR2412893A1/fr
Application granted granted Critical
Publication of FR2412893B1 publication Critical patent/FR2412893B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/086—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer
    • 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
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/087—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PROCEDE DE RECONNAISSANCE D'OBJETS MARQUES PAR DES BANDES MAGNETIQUES, EN FAISANT PASSER L'OBJET MARQUE DANS UN CHAMP MAGNETIQUE ALTERNATIF ET EN ANALYSANT LE CHAMP PERTURBE. ON UTILISE POUR CHAQUE OBJET DES BANDES ISSUES D'UN MEME LOT DE FABRICATION, AVEC UNE FORME ALEATOIRE DU CYCLE D'HYSTERESIS, PROPRE AU LOT ET COMMUNE A TOUTES LES BANDES ISSUES DU LOT. LA BOBINE DE DETECTION RECEVANT L'OBJET MARQUE EST MONTEE EN OPPOSITION AVEC UNE BOBINE AUXILIAIRE RECEVANT UNE MARQUE TEMOIN IDENTIQUE A LA MARQUE DES OBJETS A RECONNAITRE. LA RECONNAISSANCE SE FAIT PAR DETECTION DE L'ANNULATION DU SIGNAL RESULTANT. L'INVENTION S'APPLIQUE AU CONTROLE DES ACCES A DES LOCAUX DE SECURITE.
FR7738997A 1977-12-23 1977-12-23 Procede de reconnaissance d'objets Granted FR2412893A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7738997A FR2412893A1 (fr) 1977-12-23 1977-12-23 Procede de reconnaissance d'objets
JP15048278A JPS5488029A (en) 1977-12-23 1978-12-05 Method of and device for magnetically identifying mark
US05/967,303 US4195771A (en) 1977-12-23 1978-12-07 Method of identifying articles
DE2855396A DE2855396C3 (de) 1977-12-23 1978-12-21 Verfahren und Vorrichtung zum Erkennen von magnetisch markierten Gegenständen
IT69942/78A IT1203211B (it) 1977-12-23 1978-12-22 Dispositivo per il riconoscimento di oggetti

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7738997A FR2412893A1 (fr) 1977-12-23 1977-12-23 Procede de reconnaissance d'objets

Publications (2)

Publication Number Publication Date
FR2412893A1 true FR2412893A1 (fr) 1979-07-20
FR2412893B1 FR2412893B1 (fr) 1980-08-22

Family

ID=9199274

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738997A Granted FR2412893A1 (fr) 1977-12-23 1977-12-23 Procede de reconnaissance d'objets

Country Status (5)

Country Link
US (1) US4195771A (fr)
JP (1) JPS5488029A (fr)
DE (1) DE2855396C3 (fr)
FR (1) FR2412893A1 (fr)
IT (1) IT1203211B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293222A2 (fr) * 1987-05-29 1988-11-30 Security Tag Systems, Inc. Papier de sécurité

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219677A (ja) * 1982-06-03 1983-12-21 アイデンテイテツク　コ−ポレ−シヨン 磁気機械的マ−カ−をもつコ−ド化された監視システム
GB2179298A (en) * 1985-07-01 1987-03-04 Mars Inc Magnetically encoded card having two levels of spatial bit density
GB8918699D0 (en) * 1989-08-16 1989-09-27 De La Rue Syst Thread detector assembly
JPH0375894A (ja) * 1989-08-17 1991-03-29 Fuji Electric Co Ltd 磁気マーカーの識別方法
US6352203B1 (en) * 1999-03-17 2002-03-05 Compaq Information Technologies Group, L.P. Automated semiconductor identification system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790754A (en) * 1972-08-04 1974-02-05 Burroughs Machines Ltd Security access medium
US4150781A (en) * 1974-08-08 1979-04-24 Johnson Everett A Access authentication system
US4134538A (en) * 1976-03-18 1979-01-16 La Societe Metalimphy Process and apparatus for identification of objects
US4151405A (en) * 1976-06-24 1979-04-24 Glen Peterson Ferromagnetic marker pairs for detecting objects having marker secured thereto, and method and system for activating, deactivating and using same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293222A2 (fr) * 1987-05-29 1988-11-30 Security Tag Systems, Inc. Papier de sécurité
EP0293222A3 (en) * 1987-05-29 1989-09-06 Security Tag Systems Inc. Secure paper product

Also Published As

Publication number Publication date
IT7869942A0 (it) 1978-12-22
DE2855396C3 (de) 1981-10-29
DE2855396A1 (de) 1979-06-28
US4195771A (en) 1980-04-01
JPS5488029A (en) 1979-07-12
DE2855396B2 (de) 1980-09-11
FR2412893B1 (fr) 1980-08-22
IT1203211B (it) 1989-02-15

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse