CH554567A - DEVICE FOR RECORDING AND SCANNING INFORMATION ON MAGNETIZABLE IDENTIFICATION CARDS. - Google Patents

DEVICE FOR RECORDING AND SCANNING INFORMATION ON MAGNETIZABLE IDENTIFICATION CARDS.

Info

Publication number
CH554567A
CH554567A CH74473A CH74473A CH554567A CH 554567 A CH554567 A CH 554567A CH 74473 A CH74473 A CH 74473A CH 74473 A CH74473 A CH 74473A CH 554567 A CH554567 A CH 554567A
Authority
CH
Switzerland
Prior art keywords
magnetizable
recording
scanning information
identification cards
cards
Prior art date
Application number
CH74473A
Other languages
German (de)
Original Assignee
Landis & Gyr Gmbh
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 Landis & Gyr Gmbh filed Critical Landis & Gyr Gmbh
Priority to CH74473A priority Critical patent/CH554567A/en
Priority to DE19732311950 priority patent/DE2311950A1/en
Priority to FR7401560A priority patent/FR2215157A7/fr
Publication of CH554567A publication Critical patent/CH554567A/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1415—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol conversion to or from pulse frequency coding
    • 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/80—Card carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
CH74473A 1973-01-19 1973-01-19 DEVICE FOR RECORDING AND SCANNING INFORMATION ON MAGNETIZABLE IDENTIFICATION CARDS. CH554567A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH74473A CH554567A (en) 1973-01-19 1973-01-19 DEVICE FOR RECORDING AND SCANNING INFORMATION ON MAGNETIZABLE IDENTIFICATION CARDS.
DE19732311950 DE2311950A1 (en) 1973-01-19 1973-03-07 DEVICE FOR RECORDING AND SCANNING INFORMATION ON MAGNETIZABLE IDENTIFICATION CARDS
FR7401560A FR2215157A7 (en) 1973-01-19 1974-01-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH74473A CH554567A (en) 1973-01-19 1973-01-19 DEVICE FOR RECORDING AND SCANNING INFORMATION ON MAGNETIZABLE IDENTIFICATION CARDS.

Publications (1)

Publication Number Publication Date
CH554567A true CH554567A (en) 1974-09-30

Family

ID=4194190

Family Applications (1)

Application Number Title Priority Date Filing Date
CH74473A CH554567A (en) 1973-01-19 1973-01-19 DEVICE FOR RECORDING AND SCANNING INFORMATION ON MAGNETIZABLE IDENTIFICATION CARDS.

Country Status (3)

Country Link
CH (1) CH554567A (en)
DE (1) DE2311950A1 (en)
FR (1) FR2215157A7 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176259A (en) * 1976-10-04 1979-11-27 Honeywell Information Systems, Inc. Read apparatus

Also Published As

Publication number Publication date
FR2215157A7 (en) 1974-08-19
DE2311950A1 (en) 1974-08-08

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Legal Events

Date Code Title Description
PL Patent ceased