FR2215157A7 - - Google Patents

Info

Publication number
FR2215157A7
FR2215157A7 FR7401560A FR7401560A FR2215157A7 FR 2215157 A7 FR2215157 A7 FR 2215157A7 FR 7401560 A FR7401560 A FR 7401560A FR 7401560 A FR7401560 A FR 7401560A FR 2215157 A7 FR2215157 A7 FR 2215157A7
Authority
FR
France
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
Application number
FR7401560A
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.)
Landis and Gyr GmbH
Original Assignee
Landis and 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 and Gyr GmbH filed Critical Landis and Gyr GmbH
Application granted granted Critical
Publication of FR2215157A7 publication Critical patent/FR2215157A7/fr
Expired legal-status Critical Current

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)
FR7401560A 1973-01-19 1974-01-17 Expired FR2215157A7 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH74473A CH554567A (de) 1973-01-19 1973-01-19 Einrichtung zum aufzeichnen und abtasten von informationen auf magnetisierbaren kennkarten.

Publications (1)

Publication Number Publication Date
FR2215157A7 true FR2215157A7 (fr) 1974-08-19

Family

ID=4194190

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7401560A Expired FR2215157A7 (fr) 1973-01-19 1974-01-17

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2366645A1 (fr) * 1976-10-04 1978-04-28 Honeywell Inf Systems Appareil pour la lecture d'une information enregistree magnetiquement sur un element deplace a une vitesse non uniforme

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2366645A1 (fr) * 1976-10-04 1978-04-28 Honeywell Inf Systems Appareil pour la lecture d'une information enregistree magnetiquement sur un element deplace a une vitesse non uniforme

Also Published As

Publication number Publication date
DE2311950A1 (de) 1974-08-08
CH554567A (de) 1974-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse