FR2061741B1 - - Google Patents

Info

Publication number
FR2061741B1
FR2061741B1 FR7033432A FR7033432A FR2061741B1 FR 2061741 B1 FR2061741 B1 FR 2061741B1 FR 7033432 A FR7033432 A FR 7033432A FR 7033432 A FR7033432 A FR 7033432A FR 2061741 B1 FR2061741 B1 FR 2061741B1
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
FR7033432A
Other languages
French (fr)
Other versions
FR2061741A1 (enExample
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of FR2061741A1 publication Critical patent/FR2061741A1/fr
Application granted granted Critical
Publication of FR2061741B1 publication Critical patent/FR2061741B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
    • G11C17/02—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using magnetic or inductive elements
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
    • 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/716—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by two or more magnetic layers
    • 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
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/855—Coating only part of a support with a magnetic layer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Magnetic Record Carriers (AREA)
  • Credit Cards Or The Like (AREA)
FR7033432A 1969-09-16 1970-09-15 Expired FR2061741B1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691946760 DE1946760A1 (de) 1969-09-16 1969-09-16 Magnetischer Informationsspeicher

Publications (2)

Publication Number Publication Date
FR2061741A1 FR2061741A1 (enExample) 1971-06-25
FR2061741B1 true FR2061741B1 (enExample) 1974-05-17

Family

ID=5745596

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7033432A Expired FR2061741B1 (enExample) 1969-09-16 1970-09-15

Country Status (4)

Country Link
US (1) US3683340A (enExample)
DE (1) DE1946760A1 (enExample)
FR (1) FR2061741B1 (enExample)
NL (1) NL7011715A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806903A (en) * 1971-12-06 1974-04-23 Hughes Aircraft Co Magneto-optical cylindrical magnetic domain memory
USRE28440E (en) * 1971-12-06 1975-06-03 Magneto-optical cylindrical magnetic domain memory
US3896292A (en) * 1973-06-18 1975-07-22 Michael May Hall effect position coded card detector
US5504699A (en) * 1994-04-08 1996-04-02 Goller; Stuart E. Nonvolatile magnetic analog memory

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL232741A (enExample) * 1957-10-30
NL291361A (enExample) * 1962-04-16
BE634300A (enExample) * 1962-06-29
GB1097221A (en) * 1963-10-28 1968-01-03 Plessey Uk Ltd Improvements in or relating to ticket checking systems
GB999496A (en) * 1964-04-22 1965-07-28 Nickolai Alexandrovich Zykov Inductive type memory matrix with recording information on shielding punched cards
FR1471893A (fr) * 1965-03-24 1967-03-03 Siemens Ag Porteur d'informations à exploration galvanomagnétique comportant un organe d'exploration
US3490011A (en) * 1966-08-12 1970-01-13 Texas Instruments Inc Read-only memory with an adjacent apertured magnetic plate
US3430200A (en) * 1967-06-30 1969-02-25 Walter W Barney Validator apparatus for magnetic credit cards and the like

Also Published As

Publication number Publication date
US3683340A (en) 1972-08-08
DE1946760A1 (de) 1971-03-25
FR2061741A1 (enExample) 1971-06-25
NL7011715A (enExample) 1971-03-18

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Legal Events

Date Code Title Description
ST Notification of lapse