USB356602I5 - - Google Patents

Info

Publication number
USB356602I5
USB356602I5 US35660273A USB356602I5 US B356602 I5 USB356602 I5 US B356602I5 US 35660273 A US35660273 A US 35660273A US B356602 I5 USB356602 I5 US B356602I5
Authority
US
United States
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.)
Pending
Application number
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 filed Critical
Priority to US356602A priority Critical patent/US3927393A/en
Publication of USB356602I5 publication Critical patent/USB356602I5/en
Application granted granted Critical
Publication of US3927393A publication Critical patent/US3927393A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
US356602A 1973-05-02 1973-05-02 Magnetic record medium authentication system Expired - Lifetime US3927393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US356602A US3927393A (en) 1973-05-02 1973-05-02 Magnetic record medium authentication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US356602A US3927393A (en) 1973-05-02 1973-05-02 Magnetic record medium authentication system

Publications (2)

Publication Number Publication Date
USB356602I5 true USB356602I5 (en) 1975-01-28
US3927393A US3927393A (en) 1975-12-16

Family

ID=23402141

Family Applications (1)

Application Number Title Priority Date Filing Date
US356602A Expired - Lifetime US3927393A (en) 1973-05-02 1973-05-02 Magnetic record medium authentication system

Country Status (1)

Country Link
US (1) US3927393A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1519142A (en) * 1974-07-04 1978-07-26 Emi Ltd Detection of magnetic patterns
GB1593377A (en) * 1976-12-10 1981-07-15 Emi Ltd Security document and system
US4239959A (en) * 1977-03-23 1980-12-16 General Kinetics Incorporated Perpetuation of information in magnetically recorded medium
US4639584A (en) * 1985-07-25 1987-01-27 Adams Robert T Non-alterable magnetic coding
US5981053A (en) * 1993-10-05 1999-11-09 Sandia Corporation Tamper resistant magnetic stripes
GB9414368D0 (en) * 1994-07-15 1994-09-07 Thorn Secure Science Ltd Authentication technique
US6468678B1 (en) 1994-11-17 2002-10-22 3M Innovative Properties Company Conformable magnetic articles for use with traffic bearing surfaces methods of making same systems including same and methods of use
EP0856088B1 (en) * 1995-10-18 2000-12-13 Minnesota Mining And Manufacturing Company Conformable magnetic articles underlaid beneath traffic-bearing surfaces
US5764060A (en) * 1996-03-11 1998-06-09 Minnesota Mining And Manufacturing Company Guidance system for a moving person

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200207A (en) * 1958-12-12 1965-08-10 Siemens Ag Method and means for recording and reproducing magnetograms
US3566356A (en) * 1968-02-29 1971-02-23 Minnesota Mining & Mfg Magnetic recording document and method
US3573981A (en) * 1967-12-14 1971-04-06 Ibm Method and apparatus for inducing uniaxial anisotropy in magnetic film thereby,and memory using the film
US3609684A (en) * 1970-04-27 1971-09-28 Honeywell Inf Systems Method and apparatus for storing and retrieving information by analog waveform correlation techniques
US3626160A (en) * 1969-12-29 1971-12-07 Ibm Magnetic record sensing device
US3714664A (en) * 1970-11-12 1973-01-30 Minnesota Mining & Mfg Magnetically encoded document
US3739086A (en) * 1969-10-27 1973-06-12 Ampex Frame addressing scheme for video recording medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200207A (en) * 1958-12-12 1965-08-10 Siemens Ag Method and means for recording and reproducing magnetograms
US3573981A (en) * 1967-12-14 1971-04-06 Ibm Method and apparatus for inducing uniaxial anisotropy in magnetic film thereby,and memory using the film
US3566356A (en) * 1968-02-29 1971-02-23 Minnesota Mining & Mfg Magnetic recording document and method
US3739086A (en) * 1969-10-27 1973-06-12 Ampex Frame addressing scheme for video recording medium
US3626160A (en) * 1969-12-29 1971-12-07 Ibm Magnetic record sensing device
US3609684A (en) * 1970-04-27 1971-09-28 Honeywell Inf Systems Method and apparatus for storing and retrieving information by analog waveform correlation techniques
US3714664A (en) * 1970-11-12 1973-01-30 Minnesota Mining & Mfg Magnetically encoded document

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin, Vol. 9. No. 11, Apr., 1967, pp. 1499, 1500, J. J. Hagopian. *

Also Published As

Publication number Publication date
US3927393A (en) 1975-12-16

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