NZ183152A - Multiple detectors used to centre read beam on track of optically readable information structure - Google Patents

Multiple detectors used to centre read beam on track of optically readable information structure

Info

Publication number
NZ183152A
NZ183152A NZ183152A NZ18315277A NZ183152A NZ 183152 A NZ183152 A NZ 183152A NZ 183152 A NZ183152 A NZ 183152A NZ 18315277 A NZ18315277 A NZ 18315277A NZ 183152 A NZ183152 A NZ 183152A
Authority
NZ
New Zealand
Prior art keywords
track
readable information
information structure
optically readable
multiple detectors
Prior art date
Application number
NZ183152A
Other languages
English (en)
Inventor
J J M Braat
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of NZ183152A publication Critical patent/NZ183152A/xx

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
    • G11B7/0901—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
    • G11B7/0906—Differential phase difference systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/1053—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed to compensate for the magnetic domain drift or time shift
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/7605—Television signal recording on discs or drums
NZ183152A 1976-01-28 1977-01-25 Multiple detectors used to centre read beam on track of optically readable information structure NZ183152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7600842,A NL182258C (nl) 1976-01-28 1976-01-28 Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestructuur.

Publications (1)

Publication Number Publication Date
NZ183152A true NZ183152A (en) 1980-04-28

Family

ID=19825526

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ183152A NZ183152A (en) 1976-01-28 1977-01-25 Multiple detectors used to centre read beam on track of optically readable information structure

Country Status (21)

Country Link
JP (1) JPS5293222A (xx)
AR (1) AR211720A1 (xx)
AT (1) AT349231B (xx)
AU (1) AU505466B2 (xx)
BE (1) BE850781A (xx)
BR (1) BR7700452A (xx)
CA (1) CA1094684A (xx)
CH (1) CH613797A5 (xx)
DE (1) DE2701539C2 (xx)
DK (1) DK146106C (xx)
ES (1) ES455360A1 (xx)
FR (1) FR2339928A1 (xx)
GB (1) GB1534381A (xx)
IT (1) IT1074335B (xx)
MX (1) MX143161A (xx)
NL (1) NL182258C (xx)
NO (1) NO149188C (xx)
NZ (1) NZ183152A (xx)
PL (1) PL107679B1 (xx)
SE (2) SE7700725L (xx)
ZA (1) ZA7711B (xx)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038771B2 (ja) * 1978-06-19 1985-09-03 パイオニア株式会社 光学式情報読取装置のサ−ボ装置
JPS573236A (en) * 1980-06-10 1982-01-08 Olympus Optical Co Ltd Optical information reader
JPS57111837A (en) * 1980-12-27 1982-07-12 Olympus Optical Co Ltd Signal detecting system of optical information reader
NL8204555A (nl) * 1981-11-25 1983-06-16 Hitachi Ltd Inrichting voor het registreren en weergeven van informatie.
JPS5891538A (ja) * 1981-11-25 1983-05-31 Hitachi Ltd 光デイスクトラツク追跡装置
NL8105346A (xx) * 1981-11-26 1983-06-16
NL8105347A (nl) * 1981-11-26 1983-06-16 Philips Nv Inrichting voor het optisch aftasten van een schijfvormige registratiedrager.
JPS58125242A (ja) * 1982-01-22 1983-07-26 Victor Co Of Japan Ltd 光学的情報信号再生装置のトラツキング誤差検出方式
JPS58150145A (ja) * 1982-03-03 1983-09-06 Toshiba Corp 光学式デジタルデイスクプレ−ヤのトラツキング制御回路
JPS58208944A (ja) * 1982-05-31 1983-12-05 Sony Corp 光学ヘツド制御信号発生装置
JPS5922242A (ja) * 1982-07-26 1984-02-04 Foster Denki Kk 情報再生装置における光学系制御信号検出回路
JPS59110045A (ja) * 1982-12-13 1984-06-25 Sanyo Electric Co Ltd 光学式ピツクアツプ装置
JPS59191144A (ja) * 1983-04-14 1984-10-30 Sony Corp 光ピツクアツプのトラツキングサ−ボ回路
JPS59198540A (ja) * 1983-04-26 1984-11-10 Asahi Optical Co Ltd 光学式デイスクプレ−ヤのトラツキングサ−ボ回路
US4740940A (en) * 1985-03-11 1988-04-26 Matsushita Electric Industrial Co., Ltd. Optical information read apparatus
JPS61248237A (ja) * 1985-04-25 1986-11-05 Sankyo Seiki Mfg Co Ltd トラツキング誤差信号検出方法
JP2796592B2 (ja) * 1985-10-17 1998-09-10 セイコーインスツルメンツ株式会社 トラツキングエラー信号発生回路
JP2824573B2 (ja) * 1985-11-08 1998-11-11 セイコーインスツルメンツ株式会社 トラツキングエラー信号発生回路
JP2906144B2 (ja) * 1986-04-09 1999-06-14 セイコーインスツルメンツ株式会社 光学ヘツド制御装置
US4958245A (en) * 1988-04-07 1990-09-18 Insite Peripherals, Inc. Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities
KR100254155B1 (ko) * 1994-06-07 2000-04-15 모리시타 요이찌 광학 정보 기록 매체, 광학 정보 기록 방법, 및 이 방법을 사용한 광학 정보 재생 장치
TW364992B (en) * 1996-04-25 1999-07-21 Toshiba Corp Optic data regeneration apparatus and control method thereof
DE19723542A1 (de) * 1997-06-05 1998-12-10 Thomson Brandt Gmbh Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger
JP3544847B2 (ja) 1998-01-16 2004-07-21 三菱電機株式会社 光学的情報再生方法および装置
WO2008059952A1 (fr) 2006-11-16 2008-05-22 Panasonic Corporation Appareil de surveillance de dispositif de reproduction d'informations optiques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381086A (en) * 1962-08-16 1968-04-30 Minnesota Mining & Mfg Reproduction of television signals from photographic disc recordings
FR2235354A1 (en) * 1973-06-29 1975-01-24 Thomson Csf Photoelectric optical test sensor - measures displacement of a diffraction screen with constant spacing in the test sensor plane

Also Published As

Publication number Publication date
AU2161677A (en) 1978-08-03
DK146106C (da) 1983-11-21
NL182258B (nl) 1987-09-01
AT349231B (de) 1979-03-26
DE2701539A1 (de) 1977-08-04
SE7700725L (sv) 1977-07-29
PL107679B1 (pl) 1980-02-29
NL182258C (nl) 1988-02-01
GB1534381A (en) 1978-12-06
JPS5293222A (en) 1977-08-05
DK30777A (da) 1977-07-29
DK146106B (da) 1983-06-27
JPS5630610B2 (xx) 1981-07-16
NO770240L (no) 1977-07-29
DE2701539C2 (de) 1981-11-12
FR2339928A1 (fr) 1977-08-26
CH613797A5 (en) 1979-10-15
NO149188C (no) 1984-02-29
ATA46077A (de) 1978-08-15
NL7600842A (nl) 1977-08-01
IT1074335B (it) 1985-04-20
AR211720A1 (es) 1978-02-28
FR2339928B1 (xx) 1980-03-21
NO149188B (no) 1983-11-21
BE850781A (fr) 1977-07-26
CA1094684A (en) 1981-01-27
AU505466B2 (en) 1979-11-22
ES455360A1 (es) 1978-01-01
BR7700452A (pt) 1977-10-04
ZA7711B (en) 1978-08-30
MX143161A (es) 1981-03-26
SE408238B (sv) 1979-05-21

Similar Documents

Publication Publication Date Title
NZ183153A (en) Multiple detectors to focus read beam on track of optically readable information structure
NZ183152A (en) Multiple detectors used to centre read beam on track of optically readable information structure
NZ184038A (en) Read beam tracking on an optically readable record
NZ194817A (en) Optically readable record carrier information areas of adjacent tracks differ and are readable by differently polarized read beam components
AT374606B (de) Aufzeichnungstraeger, in dem informationen in einer optisch auslesbaren informationsstrukur von in spuren angeordneten informationsgebieten angebracht sind
ZA795249B (en) Record carrier containing information in an optically readable radiation reflecting information structure
BR7604376A (pt) Aparelho para a leitura de uma estrutura refletora de radiacoes contendo informacoes gravadas numa trilha que podem ser lidas oticamente
GB2005457B (en) Optically written information recording element
FR2334148A1 (fr) Moyens de stockage et de recouvrement d'information
IT1171769B (it) Apparecchiatura per leggere e/o registrare otticamente informazioni
FR2352370A1 (fr) Detecteur regenerateur de lecture
NZ184779A (en) Diode laser reading of video disc
NZ195037A (en) Optically readable record: adjacent tracks on different slopes
ES498338A0 (es) Un soporte de registro perfeccionado y un aparato para leer dicho soporte
FR2343307A1 (fr) Appareil de lecture de disque notamment electrophone
AT371278B (de) Optisch auslesbare datenscheibe
IT1096013B (it) Dispositivo per memorizzare e leggere informazioni
AT368655B (de) Informationsaufzeichnungstraeger
GB2015770B (en) Optical information record
ZA794396B (en) Record carrier with an optically readable radiation-reflecting information structure
SE7908542L (sv) Uppteckningsberare innehallande information i en optiskt lesbar informationsstruktur
IT1119078B (it) Apparecchio per registrare e o riprodurre segnali su nastri magnetici
IT1103295B (it) Sistema per rivelare e riprodurre segnali autdio otticamente registrati
AT368311B (de) Aufzeichnungstraeger mit einer optisch auslesbaren informationsstruktur
IT1131628B (it) Apparecchiatura per leggere informazione