DE3879397D1 - Vorrichtung zum erkennen eines magnetischen mediums. - Google Patents

Vorrichtung zum erkennen eines magnetischen mediums.

Info

Publication number
DE3879397D1
DE3879397D1 DE8888119015T DE3879397T DE3879397D1 DE 3879397 D1 DE3879397 D1 DE 3879397D1 DE 8888119015 T DE8888119015 T DE 8888119015T DE 3879397 T DE3879397 T DE 3879397T DE 3879397 D1 DE3879397 D1 DE 3879397D1
Authority
DE
Germany
Prior art keywords
carrier
magnetic
sensors
markings
interference fields
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.)
Expired - Fee Related
Application number
DE8888119015T
Other languages
English (en)
Other versions
DE3879397T2 (de
Inventor
Claes Ingvert
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.)
Tetra Pak AB
Original Assignee
PROFOR LUND SE AB
Profor AB
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 PROFOR LUND SE AB, Profor AB filed Critical PROFOR LUND SE AB
Application granted granted Critical
Publication of DE3879397D1 publication Critical patent/DE3879397D1/de
Publication of DE3879397T2 publication Critical patent/DE3879397T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/025—Compensating stray fields
    • 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
    • G06K7/083—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 inductive
    • G06K7/084—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 inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Measuring Magnetic Variables (AREA)
DE8888119015T 1987-11-26 1988-11-15 Vorrichtung zum erkennen eines magnetischen mediums. Expired - Fee Related DE3879397T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8704704A SE459700B (sv) 1987-11-26 1987-11-26 Saett att undertrycka verkan av magnetiska stoerfaelt vid detektering av paa en baerare anbringade magnetiska maerken eller markeringar

Publications (2)

Publication Number Publication Date
DE3879397D1 true DE3879397D1 (de) 1993-04-22
DE3879397T2 DE3879397T2 (de) 1993-06-24

Family

ID=20370404

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888119015T Expired - Fee Related DE3879397T2 (de) 1987-11-26 1988-11-15 Vorrichtung zum erkennen eines magnetischen mediums.

Country Status (5)

Country Link
EP (1) EP0317879B1 (de)
AT (1) ATE87115T1 (de)
DE (1) DE3879397T2 (de)
ES (1) ES2039563T3 (de)
SE (1) SE459700B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE524370C2 (sv) 2002-05-10 2004-08-03 Tetra Laval Holdings & Finance Förpackningslaminat, bigvals, samt ett skikt för användning till ett förpackningslaminat
US7064558B1 (en) * 2004-12-16 2006-06-20 Honeywell International Inc. Millivolt output circuit for use with programmable sensor compensation integrated circuits
SE529125C2 (sv) * 2005-03-02 2007-05-08 Tetra Laval Holdings & Finance Sätt och anordning för att bestämma läget hos ett förpackningsmaterial med magnetiska markeringar
RU2589675C2 (ru) * 2010-11-29 2016-07-10 Тетра Лаваль Холдингз Энд Файнэнс С.А. Упаковочный материал, содержащий намагничевыемые части

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7405727A (nl) * 1974-04-29 1975-10-31 Philips Nv Magnetoweerstandkop.
DE2615539C2 (de) * 1975-04-14 1986-01-16 N.V. Philips' Gloeilampenfabrieken, Eindhoven Magnetkopf mit magnetoresistivem Element
US4283774A (en) * 1979-06-13 1981-08-11 Burroughs Corporation On-chip method of balancing memory detectors and balanced detectors formed thereby
JPS58154615A (ja) * 1982-03-10 1983-09-14 Copal Co Ltd 磁気検出装置

Also Published As

Publication number Publication date
EP0317879A1 (de) 1989-05-31
EP0317879B1 (de) 1993-03-17
DE3879397T2 (de) 1993-06-24
ATE87115T1 (de) 1993-04-15
SE8704704D0 (sv) 1987-11-26
ES2039563T3 (es) 1993-10-01
SE459700B (sv) 1989-07-24
SE8704704L (sv) 1989-05-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: AB TETRA PAK, LUND, SE

8339 Ceased/non-payment of the annual fee