ES431776A1 - Un aparato para leer un portador de registro en forma de disco. - Google Patents

Un aparato para leer un portador de registro en forma de disco.

Info

Publication number
ES431776A1
ES431776A1 ES431776A ES431776A ES431776A1 ES 431776 A1 ES431776 A1 ES 431776A1 ES 431776 A ES431776 A ES 431776A ES 431776 A ES431776 A ES 431776A ES 431776 A1 ES431776 A1 ES 431776A1
Authority
ES
Spain
Prior art keywords
whose
radiation
control signal
scanning point
control system
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.)
Expired
Application number
ES431776A
Other languages
English (en)
Spanish (es)
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 ES431776A1 publication Critical patent/ES431776A1/es
Expired legal-status Critical Current

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
    • 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
    • G11B7/0901—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 for track following only
    • G11B7/0903—Multi-beam tracking systems
    • 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
    • G11B7/0946—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 operation during external perturbations not related to the carrier or servo beam, e.g. vibration

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Holo Graphy (AREA)
  • Recording Measured Values (AREA)
ES431776A 1973-11-10 1974-11-08 Un aparato para leer un portador de registro en forma de disco. Expired ES431776A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7315419A NL7315419A (nl) 1973-11-10 1973-11-10 Inrichting voor het uitlezen van een schijfvor- mige registratiedrager.

Publications (1)

Publication Number Publication Date
ES431776A1 true ES431776A1 (es) 1976-12-16

Family

ID=19819976

Family Applications (1)

Application Number Title Priority Date Filing Date
ES431776A Expired ES431776A1 (es) 1973-11-10 1974-11-08 Un aparato para leer un portador de registro en forma de disco.

Country Status (17)

Country Link
JP (1) JPS5433724B2 (fr)
AR (1) AR204426A1 (fr)
AT (1) AT336298B (fr)
BE (1) BE822040A (fr)
BR (1) BR7409349A (fr)
CA (1) CA1055156A (fr)
CH (1) CH579807A5 (fr)
DE (1) DE2452815C2 (fr)
DK (1) DK135070B (fr)
ES (1) ES431776A1 (fr)
FR (1) FR2251067B1 (fr)
GB (1) GB1490726A (fr)
IT (1) IT1024778B (fr)
NL (1) NL7315419A (fr)
NO (1) NO144501C (fr)
SE (1) SE394335B (fr)
ZA (1) ZA746767B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2396379A1 (fr) * 1977-07-01 1979-01-26 Thomson Brandt Lecteur optique de disque d'information muni d'un dispositif d'acces automatique aux informations
NL7803517A (nl) * 1978-04-03 1979-10-05 Philips Nv Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen.
JPS626580Y2 (fr) * 1979-11-17 1987-02-16
NL8001974A (nl) * 1980-04-03 1981-11-02 Philips Nv Spoorvolginrichting.
JPS57113428A (en) * 1980-12-29 1982-07-14 Pioneer Video Corp Focus servo device
NL8105347A (nl) * 1981-11-26 1983-06-16 Philips Nv Inrichting voor het optisch aftasten van een schijfvormige registratiedrager.
NL8105346A (fr) * 1981-11-26 1983-06-16
NL8200208A (nl) * 1982-01-21 1983-08-16 Philips Nv Inrichting voor het uitlezen van een schijfvormige registratiedrager.
JPS58143472A (ja) * 1982-02-22 1983-08-26 Hitachi Ltd 記録情報再生装置のトラツキングサ−ボ制御装置
JPS58169350A (ja) * 1982-03-31 1983-10-05 Hitachi Ltd 光学的情報記録再生装置
GB8824888D0 (en) 1988-10-24 2002-08-14 British Aerospace Servo actuation systems

Also Published As

Publication number Publication date
SE7413962L (fr) 1975-05-12
BE822040A (fr) 1975-05-09
CA1055156A (fr) 1979-05-22
JPS5081218A (fr) 1975-07-01
DE2452815A1 (de) 1975-06-26
ATA895674A (de) 1976-08-15
NO144501B (no) 1981-06-01
DK135070B (da) 1977-02-28
DK135070C (fr) 1977-08-01
NO744015L (fr) 1975-06-09
NO144501C (no) 1981-09-09
AR204426A1 (es) 1976-02-06
DE2452815C2 (de) 1982-10-28
IT1024778B (it) 1978-07-20
AT336298B (de) 1977-04-25
AU7515574A (en) 1976-05-13
GB1490726A (en) 1977-11-02
ZA746767B (en) 1976-05-26
SE394335B (sv) 1977-06-20
BR7409349A (pt) 1976-05-18
JPS5433724B2 (fr) 1979-10-23
NL7315419A (nl) 1975-05-13
FR2251067A1 (fr) 1975-06-06
DK580974A (fr) 1975-07-07
CH579807A5 (fr) 1976-09-15
FR2251067B1 (fr) 1983-08-05

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