FR2257976A1 - - Google Patents

Info

Publication number
FR2257976A1
FR2257976A1 FR7427491A FR7427491A FR2257976A1 FR 2257976 A1 FR2257976 A1 FR 2257976A1 FR 7427491 A FR7427491 A FR 7427491A FR 7427491 A FR7427491 A FR 7427491A FR 2257976 A1 FR2257976 A1 FR 2257976A1
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.)
Granted
Application number
FR7427491A
Other languages
French (fr)
Other versions
FR2257976B1 (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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2257976A1 publication Critical patent/FR2257976A1/fr
Application granted granted Critical
Publication of FR2257976B1 publication Critical patent/FR2257976B1/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
    • 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
    • G11B5/58—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 with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR7427491A 1973-09-25 1974-08-02 Expired FR2257976B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4481673A GB1435368A (en) 1973-09-25 1973-09-25 Data storage apparatus

Publications (2)

Publication Number Publication Date
FR2257976A1 true FR2257976A1 (en) 1975-08-08
FR2257976B1 FR2257976B1 (en) 1978-11-24

Family

ID=10434865

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427491A Expired FR2257976B1 (en) 1973-09-25 1974-08-02

Country Status (4)

Country Link
JP (1) JPS524173B2 (en)
FR (1) FR2257976B1 (en)
GB (1) GB1435368A (en)
IT (1) IT1017362B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315289A (en) * 1979-10-09 1982-02-09 International Business Machines Corporation Magnetic disk drive machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154373A (en) * 1984-01-23 1985-08-14 Teac Co Magnetic disk device
GB8612380D0 (en) * 1986-05-21 1986-07-16 British Broadcasting Corp Transmitting video timing signals
JPS63144454A (en) * 1986-12-08 1988-06-16 Alps Electric Co Ltd Information recording disk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315289A (en) * 1979-10-09 1982-02-09 International Business Machines Corporation Magnetic disk drive machine

Also Published As

Publication number Publication date
GB1435368A (en) 1976-05-12
JPS524173B2 (en) 1977-02-02
JPS5060206A (en) 1975-05-24
IT1017362B (en) 1977-07-20
FR2257976B1 (en) 1978-11-24

Similar Documents

Publication Publication Date Title
AR201758A1 (en)
AU476761B2 (en)
AR201235Q (en)
AR201231Q (en)
AU476714B2 (en)
AR201229Q (en)
AU476696B2 (en)
FR2257976B1 (en)
AR199451A1 (en)
AU477823B2 (en)
AR196382A1 (en)
AR197627A1 (en)
AR200885A1 (en)
AR201432A1 (en)
AR195948A1 (en)
AR195311A1 (en)
AR193950A1 (en)
AR200256A1 (en)
AU476873B1 (en)
AU477824B2 (en)
AR196212Q (en)
AR196123Q (en)
AU1891376A (en)
CH119773A4 (en)
BG19762A1 (en)

Legal Events

Date Code Title Description
ST Notification of lapse