FR2427659A1 - Procede et dispositif de correction azimutale d'entrefer - Google Patents

Procede et dispositif de correction azimutale d'entrefer

Info

Publication number
FR2427659A1
FR2427659A1 FR7913645A FR7913645A FR2427659A1 FR 2427659 A1 FR2427659 A1 FR 2427659A1 FR 7913645 A FR7913645 A FR 7913645A FR 7913645 A FR7913645 A FR 7913645A FR 2427659 A1 FR2427659 A1 FR 2427659A1
Authority
FR
France
Prior art keywords
azimutal
gap
correction method
error
angular
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
FR7913645A
Other languages
English (en)
Other versions
FR2427659B1 (fr
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
Priority claimed from NL7805801A external-priority patent/NL7805801A/xx
Priority claimed from NL7805803A external-priority patent/NL7805803A/xx
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2427659A1 publication Critical patent/FR2427659A1/fr
Application granted granted Critical
Publication of FR2427659B1 publication Critical patent/FR2427659B1/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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Procédé et dispositif pour la compensation automatique de l'erreur présentée par la position angulaire d'une tête de lecture, la moitié supérieure et la moitié inférieure d'une piste étant balayées simultanément et la différence de temps entre les passages par zéro des signaux étant déterminée et servant à déduire un signal permettant de compenser l'erreur angulaire. Application : enregistreurs magnétiques.
FR7913645A 1978-05-29 1979-05-29 Procede et dispositif de correction azimutale d'entrefer Expired FR2427659B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7805801A NL7805801A (nl) 1978-05-29 1978-05-29 Magneetkop.
NL7805803A NL7805803A (nl) 1978-05-29 1978-05-29 Azimuth-correctie van kopspleten.

Publications (2)

Publication Number Publication Date
FR2427659A1 true FR2427659A1 (fr) 1979-12-28
FR2427659B1 FR2427659B1 (fr) 1988-06-24

Family

ID=26645425

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7913645A Expired FR2427659B1 (fr) 1978-05-29 1979-05-29 Procede et dispositif de correction azimutale d'entrefer

Country Status (10)

Country Link
AT (1) AT365355B (fr)
AU (1) AU530671B2 (fr)
CH (1) CH647613A5 (fr)
DE (1) DE2920912A1 (fr)
ES (1) ES480924A0 (fr)
FR (1) FR2427659B1 (fr)
GB (1) GB2022874B (fr)
IT (1) IT1118702B (fr)
NO (1) NO151101C (fr)
NZ (1) NZ190547A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525696A (en) * 1980-11-28 1985-06-25 Minnesota Mining & Manufacturing Company Driver for rotating a magnetic playback head
NL8103833A (nl) * 1981-08-17 1983-03-16 Philips Nv Inrichting voor het weergeven van informatie in een spoor van een magnetische registratiedrager.
US4577302A (en) * 1983-03-14 1986-03-18 Dolby Laboratories Licensing Corporation Apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise
DE3546829C2 (en) * 1983-11-29 1992-11-19 Sharp K.K., Osaka, Jp Multi-track magnetic tape system with track alignment control
DE3521437A1 (de) * 1983-11-29 1986-12-18 Sharp K.K., Osaka Mehrspur-magnetbandgeraet und verfahren zur spureinstellung seiner wiedergabekoepfe
EP1830727B1 (fr) 2004-12-31 2012-08-29 Synthes GmbH Clou medullaire

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938962A (en) * 1955-07-12 1960-05-31 Konins Azimuth seeking reproducing head
US3246307A (en) * 1962-05-22 1966-04-12 Ibm Servo positioning system for magnetic disk file
US3526726A (en) * 1967-09-27 1970-09-01 Ampex Piezoelectric transducer assembly for positioning a magnetic record/reproduce head
US3541270A (en) * 1966-03-09 1970-11-17 Philips Corp Magnetic read/write head which senses data track lateral alignment error
US3678220A (en) * 1971-05-26 1972-07-18 Ibm Angulated positioning marks for moving web
US3900888A (en) * 1972-10-03 1975-08-19 Nakamichi Research Process for detecting and adjusting a vertical orientation of magnetic heads and apparatus therefor
US3918091A (en) * 1973-07-10 1975-11-04 Philips Corp Device for controlling the position of a magnetic head with respect to an information track to be followed
US4055849A (en) * 1976-04-15 1977-10-25 Eastman Kodak Company Magnetic head positioning and playback apparatus utilizing a split head for self-tracking and selective reproduction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1470735A (en) * 1975-06-18 1977-04-21 Ibm Servo positioning systems for magnetic disc recording

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938962A (en) * 1955-07-12 1960-05-31 Konins Azimuth seeking reproducing head
US3246307A (en) * 1962-05-22 1966-04-12 Ibm Servo positioning system for magnetic disk file
US3541270A (en) * 1966-03-09 1970-11-17 Philips Corp Magnetic read/write head which senses data track lateral alignment error
US3526726A (en) * 1967-09-27 1970-09-01 Ampex Piezoelectric transducer assembly for positioning a magnetic record/reproduce head
US3678220A (en) * 1971-05-26 1972-07-18 Ibm Angulated positioning marks for moving web
US3900888A (en) * 1972-10-03 1975-08-19 Nakamichi Research Process for detecting and adjusting a vertical orientation of magnetic heads and apparatus therefor
US3918091A (en) * 1973-07-10 1975-11-04 Philips Corp Device for controlling the position of a magnetic head with respect to an information track to be followed
US4055849A (en) * 1976-04-15 1977-10-25 Eastman Kodak Company Magnetic head positioning and playback apparatus utilizing a split head for self-tracking and selective reproduction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CONTROL, vol. 11, no. 108, juin 1967, pages 293-296, Londres (GB); *

Also Published As

Publication number Publication date
NZ190547A (en) 1982-03-16
AU4748779A (en) 1979-12-06
IT7968132A0 (it) 1979-05-25
NO791725L (no) 1979-11-30
DE2920912C2 (fr) 1987-04-02
ATA392579A (de) 1981-05-15
CH647613A5 (de) 1985-01-31
NO151101C (no) 1985-02-06
GB2022874A (en) 1979-12-19
AT365355B (de) 1982-01-11
FR2427659B1 (fr) 1988-06-24
IT1118702B (it) 1986-03-03
DE2920912A1 (de) 1979-12-13
GB2022874B (en) 1983-04-27
AU530671B2 (en) 1983-07-28
ES8100518A1 (es) 1980-11-01
ES480924A0 (es) 1980-11-01
NO151101B (no) 1984-10-29

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