FR2257125A1 - Magnetic recording and reproduction head - uses strip domain of modulated length according to signal received - Google Patents

Magnetic recording and reproduction head - uses strip domain of modulated length according to signal received

Info

Publication number
FR2257125A1
FR2257125A1 FR7500224A FR7500224A FR2257125A1 FR 2257125 A1 FR2257125 A1 FR 2257125A1 FR 7500224 A FR7500224 A FR 7500224A FR 7500224 A FR7500224 A FR 7500224A FR 2257125 A1 FR2257125 A1 FR 2257125A1
Authority
FR
France
Prior art keywords
magnetic recording
domain
signal received
reproduction head
length according
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.)
Granted
Application number
FR7500224A
Other languages
English (en)
French (fr)
Other versions
FR2257125B3 (enrdf_load_stackoverflow
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2257125A1 publication Critical patent/FR2257125A1/fr
Application granted granted Critical
Publication of FR2257125B3 publication Critical patent/FR2257125B3/fr
Granted 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
    • G11B5/48—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
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4907—Details for scanning
    • G11B5/4915—Structure of specially adapted heads
    • G11B5/4923—Structure of specially adapted heads in which zones of the transducing part are being physically controllable
    • G11B5/493—Control of magnetic properties, e.g. saturation, anisotropy
    • G11B5/4938—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films
    • G11B5/4946—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films for formation or displacement of magnetic domains, e.g. walls, bubbles

Landscapes

  • Magnetic Heads (AREA)
  • Magnetic Record Carriers (AREA)
  • Digital Magnetic Recording (AREA)
FR7500224A 1974-01-09 1975-01-06 Magnetic recording and reproduction head - uses strip domain of modulated length according to signal received Granted FR2257125A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7400275A NL7400275A (nl) 1974-01-09 1974-01-09 Inrichting voor magnetische registratie met een tische stripdomein als schrijf/leeskop.

Publications (2)

Publication Number Publication Date
FR2257125A1 true FR2257125A1 (en) 1975-08-01
FR2257125B3 FR2257125B3 (enrdf_load_stackoverflow) 1977-09-30

Family

ID=19820529

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7500224A Granted FR2257125A1 (en) 1974-01-09 1975-01-06 Magnetic recording and reproduction head - uses strip domain of modulated length according to signal received

Country Status (4)

Country Link
JP (1) JPS50103314A (enrdf_load_stackoverflow)
DE (1) DE2460814A1 (enrdf_load_stackoverflow)
FR (1) FR2257125A1 (enrdf_load_stackoverflow)
NL (1) NL7400275A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR2257125B3 (enrdf_load_stackoverflow) 1977-09-30
NL7400275A (nl) 1975-07-11
DE2460814A1 (de) 1975-07-17
JPS50103314A (enrdf_load_stackoverflow) 1975-08-15

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Legal Events

Date Code Title Description
ST Notification of lapse