FR2420808A1 - Mise en position automatique d'une tete transductrice mobile - Google Patents

Mise en position automatique d'une tete transductrice mobile

Info

Publication number
FR2420808A1
FR2420808A1 FR7907284A FR7907284A FR2420808A1 FR 2420808 A1 FR2420808 A1 FR 2420808A1 FR 7907284 A FR7907284 A FR 7907284A FR 7907284 A FR7907284 A FR 7907284A FR 2420808 A1 FR2420808 A1 FR 2420808A1
Authority
FR
France
Prior art keywords
track
head
automatic positioning
transducer head
servo
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
FR7907284A
Other languages
English (en)
Other versions
FR2420808B1 (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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Publication of FR2420808A1 publication Critical patent/FR2420808A1/fr
Application granted granted Critical
Publication of FR2420808B1 publication Critical patent/FR2420808B1/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
    • G11B5/584—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 tapes
    • G11B5/588—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 tapes by controlling the position of the rotating heads

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

Mise en position automatique d'une tête transductrice mobile. Le montage suivant l'invention fait suivre à la tête une piste, à la fin de laquelle il met la tête en position voulue pour reproduire la piste suivante, ou la même piste, ou une autre piste, et créer ainsi un effet de mouvement spécial. Dans l'arrêt sur image, la tête est normalement réajustée pour rebalayer une ou des pistes par asservissement sur piste. En l'absence de réajustement, un circuit détecte l'incapacité de l'asservissement à réajuster en temps voulu et applique des signaux pour positionner la tête de façon que l'asservissement sur piste puisse prendre la commande. Applicable notamment aux appareils à balayage hélicoïdal.
FR7907284A 1978-03-23 1979-03-22 Mise en position automatique d'une tete transductrice mobile Expired FR2420808B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/889,995 US4319289A (en) 1978-03-23 1978-03-23 Movable head automatic position acquisition circuit and method

Publications (2)

Publication Number Publication Date
FR2420808A1 true FR2420808A1 (fr) 1979-10-19
FR2420808B1 FR2420808B1 (fr) 1987-05-07

Family

ID=25396086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907284A Expired FR2420808B1 (fr) 1978-03-23 1979-03-22 Mise en position automatique d'une tete transductrice mobile

Country Status (11)

Country Link
US (1) US4319289A (fr)
JP (1) JPS54164112A (fr)
AT (1) AT381199B (fr)
BE (1) BE875021A (fr)
CA (1) CA1138101A (fr)
DE (2) DE2954330C2 (fr)
FR (1) FR2420808B1 (fr)
GB (1) GB2020851B (fr)
HK (1) HK787A (fr)
IT (1) IT1115053B (fr)
NL (1) NL7902275A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481544A (en) * 1981-09-18 1984-11-06 Ampex Corporation Automatic tracking system with apparatus to prevent mistracking by a limited range transducer during stop motion
JPS60158781A (ja) * 1984-01-27 1985-08-20 Sony Corp ビデオテ−プレコ−ダ−
US5119246A (en) * 1989-03-24 1992-06-02 Sony Corporation Rf tracking servo for vtr with adjustable servo loop gain
US6084375A (en) 1995-09-01 2000-07-04 The Vision Limited Partnership Method and apparatus for control of drive systems for cycle based processes
JPH09116866A (ja) * 1995-10-20 1997-05-02 Sony Corp 符号化方法、符号化復号化方法及び記録再生装置
US20060244328A1 (en) * 2005-04-29 2006-11-02 Dong-Liang Guo Brush motor having coreless assembly
JP2008146724A (ja) * 2006-12-07 2008-06-26 Toshiba Corp ディスク記憶装置及びサーボテスト方法
JP4427072B2 (ja) * 2007-04-27 2010-03-03 インターナショナル・ビジネス・マシーンズ・コーポレーション 書込みリトライ方法及び磁気テープ装置
US11567549B2 (en) * 2019-05-31 2023-01-31 Texas Instruments Incorporated Reset circuit for battery management system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905043A (en) * 1972-04-01 1975-09-09 Loewe Opta Gmbh Tape track-playback head alignment arrangement for a helical scan video recorder
FR2293118A1 (fr) * 1974-11-26 1976-06-25 Sony Corp Installation de lecture de signaux video
FR2328342A1 (fr) * 1975-10-14 1977-05-13 Sony Corp Installation de reproduction de signaux video
FR2345035A1 (fr) * 1976-03-19 1977-10-14 Ampex Procede et appareil permettant de produire des effets speciaux obtenus par modification de la base de temps dans un appareil d'enregistrement et de reproduction de donnees
DE2741030A1 (de) * 1976-09-13 1978-03-16 Sony Corp Automatisches spursteuerungssystem in einem signalwiedergabegeraet
FR2362542A1 (fr) * 1976-08-20 1978-03-17 Sony Corp Appareil de reproduction de signaux notamment video

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375331A (en) * 1963-10-21 1968-03-26 Nippon Electric Co System for recording and reproducing a periodic signal
DE1774833C3 (de) * 1967-09-20 1980-05-14 Sony Corp., Tokio Magnetbandwiedergabegerät
GB1312853A (en) * 1969-09-30 1973-04-11 Sanyo Electric Co Video tape recorders
US3663764A (en) * 1970-04-06 1972-05-16 Ampex Automatic tracking circuit for transverse scan magnetic tape transport
JPS5650329B2 (fr) * 1972-05-22 1981-11-28
JPS5633772B2 (fr) * 1972-12-20 1981-08-06
US4093885A (en) * 1976-03-19 1978-06-06 Ampex Corporation Transducer assembly vibration sensor
US4106065A (en) * 1976-03-19 1978-08-08 Ampex Corporation Drive circuitry for controlling movable video head
US4080636A (en) * 1976-03-19 1978-03-21 Ampex Corporation System for damping vibrations in a deflectable transducer
US4151570A (en) * 1976-03-22 1979-04-24 Ampex Corporation Automatic scan tracking using a magnetic head supported by a piezoelectric bender element
US4099211A (en) * 1976-09-13 1978-07-04 Ampex Corporation Positionable transducing mounting structure and driving system therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905043A (en) * 1972-04-01 1975-09-09 Loewe Opta Gmbh Tape track-playback head alignment arrangement for a helical scan video recorder
FR2293118A1 (fr) * 1974-11-26 1976-06-25 Sony Corp Installation de lecture de signaux video
FR2328342A1 (fr) * 1975-10-14 1977-05-13 Sony Corp Installation de reproduction de signaux video
FR2345035A1 (fr) * 1976-03-19 1977-10-14 Ampex Procede et appareil permettant de produire des effets speciaux obtenus par modification de la base de temps dans un appareil d'enregistrement et de reproduction de donnees
FR2362542A1 (fr) * 1976-08-20 1978-03-17 Sony Corp Appareil de reproduction de signaux notamment video
DE2741030A1 (de) * 1976-09-13 1978-03-16 Sony Corp Automatisches spursteuerungssystem in einem signalwiedergabegeraet

Also Published As

Publication number Publication date
IT1115053B (it) 1986-02-03
DE2911324A1 (de) 1979-10-04
IT7948428A0 (it) 1979-03-21
DE2911324C2 (de) 1984-11-22
GB2020851B (en) 1982-07-07
NL7902275A (nl) 1979-09-25
ATA217379A (de) 1986-01-15
BE875021A (fr) 1979-07-16
HK787A (en) 1987-01-09
GB2020851A (en) 1979-11-21
US4319289A (en) 1982-03-09
DE2954330C2 (fr) 1988-04-07
JPS54164112A (en) 1979-12-27
FR2420808B1 (fr) 1987-05-07
AT381199B (de) 1986-09-10
CA1138101A (fr) 1982-12-21

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Legal Events

Date Code Title Description
ST Notification of lapse