GB1351705A - Magnetic digital recording - Google Patents

Magnetic digital recording

Info

Publication number
GB1351705A
GB1351705A GB1576671*[A GB1576671A GB1351705A GB 1351705 A GB1351705 A GB 1351705A GB 1576671 A GB1576671 A GB 1576671A GB 1351705 A GB1351705 A GB 1351705A
Authority
GB
United Kingdom
Prior art keywords
film
conductor
magnetic
núel
films
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
GB1576671*[A
Other languages
English (en)
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
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1351705A publication Critical patent/GB1351705A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3176—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps
    • G11B5/3179—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps the films being mainly disposed in parallel planes
    • G11B5/3183—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps the films being mainly disposed in parallel planes intersecting the gap plane, e.g. "horizontal head structure"
    • 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
    • G11B2005/0002—Special dispositions or recording techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Digital Magnetic Recording (AREA)
  • Magnetic Heads (AREA)
GB1576671*[A 1970-05-21 1971-05-19 Magnetic digital recording Expired GB1351705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3919470A 1970-05-21 1970-05-21

Publications (1)

Publication Number Publication Date
GB1351705A true GB1351705A (en) 1974-05-01

Family

ID=21904170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1576671*[A Expired GB1351705A (en) 1970-05-21 1971-05-19 Magnetic digital recording

Country Status (5)

Country Link
US (1) US3683407A (enExample)
JP (1) JPS5217726B1 (enExample)
DE (1) DE2124934C3 (enExample)
FR (1) FR2100675B1 (enExample)
GB (1) GB1351705A (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838843B2 (ja) * 1973-11-20 1983-08-25 ティーディーケイ株式会社 磁気記録再生方式
US4751598A (en) * 1985-02-01 1988-06-14 Censtor Corporation Thin-film, cross-field, closed-flux, anisotropic electromagnetic field device
US4931886A (en) * 1988-06-29 1990-06-05 Digital Equipment Corporation Apparatus and methods to suppress perpendicular fields in longitudinal recording
US5321570A (en) * 1989-10-02 1994-06-14 Behr Michael I Systems using superimposed, orthogonal buried servo signals
US5223994A (en) * 1989-10-02 1993-06-29 Behr Michael I System using superimposed, orthogonal buried servo signals
FR2712419B1 (fr) * 1993-11-09 1995-12-22 Thomson Csf Tête magnétique d'enregistrement/lecture.
US6816339B1 (en) * 2000-01-10 2004-11-09 Seagate Technology Llc Perpendicular magnetic recording head with longitudinal magnetic field generator to facilitate magnetization switching
US6717770B1 (en) 2000-03-24 2004-04-06 Seagate Technology Llc Recording head for applying a magnetic field perpendicular to the magnetizations within magnetic storage media

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564588A (en) * 1964-07-07 1971-02-16 Us Navy Chemiluminescent system for detecting living microorganisms

Also Published As

Publication number Publication date
FR2100675B1 (enExample) 1973-06-08
DE2124934B2 (de) 1978-12-21
DE2124934A1 (de) 1972-02-03
FR2100675A1 (enExample) 1972-03-24
DE2124934C3 (de) 1979-09-27
US3683407A (en) 1972-08-08
JPS5217726B1 (enExample) 1977-05-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee