BE903140A - Servomecanismes pour appareil de lecture de donnees - Google Patents

Servomecanismes pour appareil de lecture de donnees

Info

Publication number
BE903140A
BE903140A BE0/215515A BE215515A BE903140A BE 903140 A BE903140 A BE 903140A BE 0/215515 A BE0/215515 A BE 0/215515A BE 215515 A BE215515 A BE 215515A BE 903140 A BE903140 A BE 903140A
Authority
BE
Belgium
Prior art keywords
reading apparatus
data reading
anomaly detection
servomechanisms
disc
Prior art date
Application number
BE0/215515A
Other languages
English (en)
Inventor
T Kikuchi
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of BE903140A publication Critical patent/BE903140A/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0948—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

Servomécanisme pour appareil de lecture de données commandant en position une tete de lecture des données d'un disque d'enregistrement en rotation, comprenant une boucle de commande à réaction pour maintenir ladite tete de lecture alignée par rapport à une piste du dit disque, un dispositif de détection d'anomalies présentes sur le disque pour engendrer un signal de détection d'anomalies et un dispositif pour réduire le gain de boucle de la dite boucle de commande en réponse au dit signal de détection d'anomalie.
BE0/215515A 1984-08-29 1985-08-28 Servomecanismes pour appareil de lecture de donnees BE903140A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18115484A JPS6159635A (ja) 1984-08-29 1984-08-29 情報読取装置におけるサ−ボ装置

Publications (1)

Publication Number Publication Date
BE903140A true BE903140A (fr) 1985-12-16

Family

ID=16095829

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/215515A BE903140A (fr) 1984-08-29 1985-08-28 Servomecanismes pour appareil de lecture de donnees

Country Status (4)

Country Link
JP (1) JPS6159635A (fr)
BE (1) BE903140A (fr)
DE (1) DE3530749A1 (fr)
GB (1) GB2165064A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1301925B1 (fr) * 2000-07-12 2004-02-25 Disccontrol APS Procede de lecture amelioree d'un disque de donnees numeriques
DE10306894A1 (de) * 2003-02-18 2004-08-26 Deutsche Thomson-Brandt Gmbh Verfahren und Anordnung zum Kompensieren von Abtaststörungen optischer Aufzeichnungsträger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987666A (ja) * 1982-11-11 1984-05-21 Sony Corp 情報再生装置のサ−ボコントロ−ル回路
CA1212764A (fr) * 1982-11-11 1986-10-14 Sony Corporation Circuits de servocommande de centrage pour appareil de lecture optique

Also Published As

Publication number Publication date
GB2165064A (en) 1986-04-03
JPS6159635A (ja) 1986-03-27
GB8520961D0 (en) 1985-09-25
DE3530749A1 (de) 1986-03-06

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: PIONEER ELECTRIC CORP.

Effective date: 19870831