FR2339928A1 - DEVICE FOR READING A RECORD HOLDER WITH AN OPTICALLY READABLE INFORMATION STRUCTURE - Google Patents

DEVICE FOR READING A RECORD HOLDER WITH AN OPTICALLY READABLE INFORMATION STRUCTURE

Info

Publication number
FR2339928A1
FR2339928A1 FR7702258A FR7702258A FR2339928A1 FR 2339928 A1 FR2339928 A1 FR 2339928A1 FR 7702258 A FR7702258 A FR 7702258A FR 7702258 A FR7702258 A FR 7702258A FR 2339928 A1 FR2339928 A1 FR 2339928A1
Authority
FR
France
Prior art keywords
reading
readable information
information structure
optically readable
record holder
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
FR7702258A
Other languages
French (fr)
Other versions
FR2339928B1 (en
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 FR2339928A1 publication Critical patent/FR2339928A1/en
Application granted granted Critical
Publication of FR2339928B1 publication Critical patent/FR2339928B1/fr
Granted 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
    • G11B7/0901—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
FR7702258A 1976-01-28 1977-01-27 DEVICE FOR READING A RECORD HOLDER WITH AN OPTICALLY READABLE INFORMATION STRUCTURE Granted FR2339928A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7600842,A NL182258C (en) 1976-01-28 1976-01-28 DEVICE FOR READING A FLAT RECORD CARRIER WITH AN OPTICALLY READABLE INFORMATION STRUCTURE.

Publications (2)

Publication Number Publication Date
FR2339928A1 true FR2339928A1 (en) 1977-08-26
FR2339928B1 FR2339928B1 (en) 1980-03-21

Family

ID=19825526

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7702258A Granted FR2339928A1 (en) 1976-01-28 1977-01-27 DEVICE FOR READING A RECORD HOLDER WITH AN OPTICALLY READABLE INFORMATION STRUCTURE

Country Status (21)

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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497379A1 (en) * 1980-12-27 1982-07-02 Olympus Optical Co SIGNAL DETECTION DEVICE FOR OPTICAL INFORMATION READING APPARATUS
FR2517154A1 (en) * 1981-11-26 1983-05-27 Philips Nv DEVICE FOR THE OPTICAL EXPLORATION OF A DISC-SHAPED INFORMATION MEDIUM
FR2517153A1 (en) * 1981-11-26 1983-05-27 Philips Nv DEVICE FOR OPTICALLY EXPLORING A DISK-SHAPED INFORMATION MEDIUM
FR2520542A1 (en) * 1982-01-22 1983-07-29 Victor Company Of Japan ALIGNMENT CONTROL SYSTEM FOR SAME-FREE DISCS
EP0087973A1 (en) * 1982-03-03 1983-09-07 Kabushiki Kaisha Toshiba Tracking servo system for optical-disc information reproducing apparatus
FR2544535A1 (en) * 1983-04-14 1984-10-19 Sony Corp ASSISTED ALIGNMENT CIRCUIT FOR OPTICAL DRIVE
FR2569038A1 (en) * 1981-11-25 1986-02-14 Hitachi Ltd APPARATUS FOR RECORDING AND REPRODUCING INFORMATION
EP0336419A2 (en) * 1988-04-07 1989-10-11 Insite Peripherals, Inc. Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038771B2 (en) * 1978-06-19 1985-09-03 パイオニア株式会社 Servo device for optical information reading device
JPS573236A (en) * 1980-06-10 1982-01-08 Olympus Optical Co Ltd Optical information reader
JPS5891538A (en) * 1981-11-25 1983-05-31 Hitachi Ltd Optical disk track tracking device
JPS58208944A (en) * 1982-05-31 1983-12-05 Sony Corp Generating device of optical head control signal
JPS5922242A (en) * 1982-07-26 1984-02-04 Foster Denki Kk Circuit for detecting optical controlling signal in information reproducing device
JPS59110045A (en) * 1982-12-13 1984-06-25 Sanyo Electric Co Ltd Optical pickup device
JPS59198540A (en) * 1983-04-26 1984-11-10 Asahi Optical Co Ltd Tracking servo circuit of optical disc player
US4740940A (en) * 1985-03-11 1988-04-26 Matsushita Electric Industrial Co., Ltd. Optical information read apparatus
JPS61248237A (en) * 1985-04-25 1986-11-05 Sankyo Seiki Mfg Co Ltd Detection of tracking error signal
JP2796592B2 (en) * 1985-10-17 1998-09-10 セイコーインスツルメンツ株式会社 Tracking error signal generation circuit
JP2824573B2 (en) * 1985-11-08 1998-11-11 セイコーインスツルメンツ株式会社 Tracking error signal generation circuit
JP2906144B2 (en) * 1986-04-09 1999-06-14 セイコーインスツルメンツ株式会社 Optical head control device
KR100254155B1 (en) * 1994-06-07 2000-04-15 모리시타 요이찌 Optical information recording medium and method, and optical reproducing apparatus utilizing the same
TW364992B (en) * 1996-04-25 1999-07-21 Toshiba Corp Optic data regeneration apparatus and control method thereof
DE19723542A1 (en) 1997-06-05 1998-12-10 Thomson Brandt Gmbh Device for reading and / or writing to optical recording media
JP3544847B2 (en) 1998-01-16 2004-07-21 三菱電機株式会社 Optical information reproducing method and apparatus
US7952966B2 (en) 2006-11-16 2011-05-31 Panasonic Corporation Tracking apparatus for optical information reproduction apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (1)

* 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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497379A1 (en) * 1980-12-27 1982-07-02 Olympus Optical Co SIGNAL DETECTION DEVICE FOR OPTICAL INFORMATION READING APPARATUS
FR2569038A1 (en) * 1981-11-25 1986-02-14 Hitachi Ltd APPARATUS FOR RECORDING AND REPRODUCING INFORMATION
FR2517154A1 (en) * 1981-11-26 1983-05-27 Philips Nv DEVICE FOR THE OPTICAL EXPLORATION OF A DISC-SHAPED INFORMATION MEDIUM
FR2517153A1 (en) * 1981-11-26 1983-05-27 Philips Nv DEVICE FOR OPTICALLY EXPLORING A DISK-SHAPED INFORMATION MEDIUM
FR2520542A1 (en) * 1982-01-22 1983-07-29 Victor Company Of Japan ALIGNMENT CONTROL SYSTEM FOR SAME-FREE DISCS
US4589103A (en) * 1982-01-22 1986-05-13 Victor Company Of Japan, Limited Tilt compensation tracking control system for optical discs
EP0087973A1 (en) * 1982-03-03 1983-09-07 Kabushiki Kaisha Toshiba Tracking servo system for optical-disc information reproducing apparatus
FR2544535A1 (en) * 1983-04-14 1984-10-19 Sony Corp ASSISTED ALIGNMENT CIRCUIT FOR OPTICAL DRIVE
EP0336419A2 (en) * 1988-04-07 1989-10-11 Insite Peripherals, Inc. Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities
EP0336419A3 (en) * 1988-04-07 1989-12-20 Insite Peripherals, Inc. Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities

Also Published As

Publication number Publication date
MX143161A (en) 1981-03-26
AT349231B (en) 1979-03-26
BR7700452A (en) 1977-10-04
BE850781A (en) 1977-07-26
NO149188C (en) 1984-02-29
ES455360A1 (en) 1978-01-01
NL182258C (en) 1988-02-01
ZA7711B (en) 1978-08-30
DE2701539A1 (en) 1977-08-04
JPS5630610B2 (en) 1981-07-16
DK146106B (en) 1983-06-27
NO149188B (en) 1983-11-21
NO770240L (en) 1977-07-29
DE2701539C2 (en) 1981-11-12
AU505466B2 (en) 1979-11-22
DK30777A (en) 1977-07-29
SE7700725L (en) 1977-07-29
AR211720A1 (en) 1978-02-28
DK146106C (en) 1983-11-21
JPS5293222A (en) 1977-08-05
IT1074335B (en) 1985-04-20
CH613797A5 (en) 1979-10-15
ATA46077A (en) 1978-08-15
GB1534381A (en) 1978-12-06
NL182258B (en) 1987-09-01
CA1094684A (en) 1981-01-27
PL107679B1 (en) 1980-02-29
NZ183152A (en) 1980-04-28
NL7600842A (en) 1977-08-01
SE408238B (en) 1979-05-21
AU2161677A (en) 1978-08-03
FR2339928B1 (en) 1980-03-21

Similar Documents

Publication Publication Date Title
BE838982A (en) DEVICE FOR READING A PLAN RECORD HOLDER EQUIPPED WITH AN OPTICALLY READABLE INFORMATION STRUCTURE
FR2339928A1 (en) DEVICE FOR READING A RECORD HOLDER WITH AN OPTICALLY READABLE INFORMATION STRUCTURE
BE843809A (en) DEVICE FOR READING A RECORD HOLDER PRESENTING A REFLECTIVE INFORMATION STRUCTURE READABLE OPTICALLY
FR2291663A1 (en) DEVICE FOR READING A RECORD HOLDER WITH AN OPTICAL INFORMATION STRUCTURE
FR2351468A1 (en) OPTICAL EXPLORATION DEVICE FOR TRACKS FOR RECORDING INFORMATION
FR2304981A1 (en) OPTICAL INFORMATION RECORDING DEVICE
FR2325987A1 (en) OPTICAL READING DEVICE FOR A RECORDING
BE879426A (en) OPTICAL DEVICE FOR READING INFORMATION FROM A DISK-SHAPED INFORMATION CARRIER
FR2422220B1 (en) RECORD CARRIER HAVING OPTICALLY READABLE PHASE STRUCTURE AND DEVICE FOR READING
FR2481501B1 (en) RECORDING CARRIER COMPRISING AN OPTICALLY READABLE INFORMATION STRUCTURE AND DEVICE FOR READING SUCH A RECORDING CARRIER
BE845349A (en) DEVICE FOR READING AN INFORMATION DISC
BE890702A (en) DEVICE FOR READING AND / OR RECORDING INFORMATION IN AN OPTICALLY READABLE INFORMATION STRUCTURE
FR2296330A1 (en) DEVICE FOR OPTICAL READING OF A PLANE REFLECTOR RECORD HOLDER
FR2509891B1 (en) OPTICAL RECORDING-READING DEVICE ON PREGRAVED INFORMATION MEDIUM
FR2420183B1 (en) RECORD CARRIER BODY AND RECORD CARRIER FOR OPTICAL INFORMATION AND RECORDING AND READING DEVICE
BE857364A (en) OPTICAL READING UNIT FOR EXPLORING A RECORD HOLDER EQUIPPED WITH AN INFORMATION STRUCTURE REFLECTING RADIATION
BE880545A (en) DEVICE FOR OPTICALLY READING INFORMATION FROM A DISC-FORMED INFORMATION CARRIER
FR2349911A1 (en) OPTICAL CONTROL DEVICE FOR RECORD READING BEAM
FR2332577A1 (en) OPTICAL INFORMATION READING DEVICE
FR2539883B1 (en) OPTICAL FOCUSING DEVICE FOR READING A INFORMATION MEDIUM RUNNING BEFORE IT
FR2542487B1 (en) DEVICE FOR READING AN OPTICALLY CODED DISC-SHAPED INFORMATION MEDIUM
FR2534722B1 (en) DEVICE FOR READING AND / OR RECORDING INFORMATION BY OPTICAL MEANS
BE825504A (en) DEVICE FOR READING A RECORD HOLDER ON WHICH INFORMATION IS RECORDED IN AN OPTICALLY READABLE STRUCTURE
FR2535097B1 (en) DEVICE FOR WRITING INFORMATION ON A MAGNETIC MEDIUM
FR2540272B1 (en) DEVICE FOR READING AN OPTICAL INFORMATION MEDIUM

Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse