CA956030A - Electromagnetic transducer apparatus - Google Patents

Electromagnetic transducer apparatus

Info

Publication number
CA956030A
CA956030A CA087,781A CA87781A CA956030A CA 956030 A CA956030 A CA 956030A CA 87781 A CA87781 A CA 87781A CA 956030 A CA956030 A CA 956030A
Authority
CA
Canada
Prior art keywords
electromagnetic transducer
transducer apparatus
electromagnetic
transducer
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
Application number
CA087,781A
Other languages
English (en)
Inventor
Eric E. Bittmann
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.)
Unisys Corp
Original Assignee
Burroughs 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 Burroughs Corp filed Critical Burroughs Corp
Application granted granted Critical
Publication of CA956030A publication Critical patent/CA956030A/en
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; 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
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/332—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using thin films
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
  • Thin Magnetic Films (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
CA087,781A 1969-07-22 1970-07-09 Electromagnetic transducer apparatus Expired CA956030A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84665069A 1969-07-22 1969-07-22

Publications (1)

Publication Number Publication Date
CA956030A true CA956030A (en) 1974-10-08

Family

ID=25298540

Family Applications (1)

Application Number Title Priority Date Filing Date
CA087,781A Expired CA956030A (en) 1969-07-22 1970-07-09 Electromagnetic transducer apparatus

Country Status (7)

Country Link
US (1) US3633188A (fr)
JP (1) JPS5036564B1 (fr)
BE (1) BE753157A (fr)
CA (1) CA956030A (fr)
DE (1) DE2035552A1 (fr)
FR (1) FR2092753B1 (fr)
GB (1) GB1269899A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4374403A (en) * 1979-06-27 1983-02-15 Matsushita Electric Industrial Co., Ltd. Magnetic recording and reproducing system
US4280194A (en) * 1979-11-26 1981-07-21 International Business Machines Corporation Parametric bubble detector
JPS58166510A (ja) * 1982-03-29 1983-10-01 Toshiba Corp 磁気再生装置
FR2549271B1 (fr) * 1983-07-13 1989-05-26 Cii Honeywell Bull Transducteur magnetique hautement integre d'ecriture d'informations sur un support magnetique
US4751598A (en) * 1985-02-01 1988-06-14 Censtor Corporation Thin-film, cross-field, closed-flux, anisotropic electromagnetic field device
JPS63500904A (ja) * 1985-08-08 1988-03-31 コ−プ　デイヴイツド デジタルデ−タ処理装置用デ−タ記憶装置
US7487908B1 (en) * 1999-10-23 2009-02-10 Ultracard, Inc. Article having an embedded accessible storage member, apparatus and method for using same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125745A (en) * 1959-05-29 1964-03-17 figures
US3103665A (en) * 1959-12-28 1963-09-10 Magnavox Co Electro-magnetic transducer
US3195108A (en) * 1960-03-29 1965-07-13 Sperry Rand Corp Comparing stored and external binary digits
US3179928A (en) * 1961-01-17 1965-04-20 Sperry Rand Corp Search memory using longitudinal steering fields
CH405426A (de) * 1961-12-21 1966-01-15 Ibm Magnetkopf zum Aufzeichnen und Ablesen von digitalen Signalen
US3188613A (en) * 1962-07-25 1965-06-08 Sperry Rand Corp Thin film search memory
US3252152A (en) * 1962-12-19 1966-05-17 Sperry Rand Corp Memory apparatus
US3251054A (en) * 1963-01-28 1966-05-10 Gen Precision Inc Analog-to-digital encoder
US3317742A (en) * 1963-01-30 1967-05-02 Fritz A Guerth Pulse generating apparatus
US3521258A (en) * 1963-06-07 1970-07-21 Westinghouse Electric Corp Transducer with thin magnetic strip,drive winding and sense winding

Also Published As

Publication number Publication date
FR2092753A1 (fr) 1972-01-28
DE2035552A1 (de) 1972-01-20
JPS5036564B1 (fr) 1975-11-26
US3633188A (en) 1972-01-04
BE753157A (fr) 1970-12-16
GB1269899A (en) 1972-04-06
FR2092753B1 (fr) 1976-02-20

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