JPS6437745A - Magneto-optical disk device - Google Patents

Magneto-optical disk device

Info

Publication number
JPS6437745A
JPS6437745A JP62194068A JP19406887A JPS6437745A JP S6437745 A JPS6437745 A JP S6437745A JP 62194068 A JP62194068 A JP 62194068A JP 19406887 A JP19406887 A JP 19406887A JP S6437745 A JPS6437745 A JP S6437745A
Authority
JP
Japan
Prior art keywords
recording
disk
optical
recorded
output
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
JP62194068A
Other languages
Japanese (ja)
Other versions
JP2576521B2 (en
Inventor
Yutaka Hattori
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.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
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 Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP62194068A priority Critical patent/JP2576521B2/en
Publication of JPS6437745A publication Critical patent/JPS6437745A/en
Application granted granted Critical
Publication of JP2576521B2 publication Critical patent/JP2576521B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark

Abstract

PURPOSE:To exactly record and to faithfully reproduce by timely changing a laser beam output, recording specific signals, and selecting the laser beam output to be able to obtain an optimum reproducing signal when these recording signals are reproduced. CONSTITUTION:When data are recorded in an optical magnetic disk 1, a specific signals for testing are recorded at the specific place (test area) 16 of this disk 1 by timely changing a laser beam output, the laser optical output at the time of the data recording is set by an optical output control circuit to self-learn the laser optical output from which an optimum reproducing signal can be obtained upon reproducing and to select, and recorded in the disk 1 with the use of the set optical output. Thus, an exact recording can be executed to the magneto optical disk of a different kind.
JP62194068A 1987-08-03 1987-08-03 Magneto-optical disk drive Expired - Lifetime JP2576521B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62194068A JP2576521B2 (en) 1987-08-03 1987-08-03 Magneto-optical disk drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62194068A JP2576521B2 (en) 1987-08-03 1987-08-03 Magneto-optical disk drive

Publications (2)

Publication Number Publication Date
JPS6437745A true JPS6437745A (en) 1989-02-08
JP2576521B2 JP2576521B2 (en) 1997-01-29

Family

ID=16318424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62194068A Expired - Lifetime JP2576521B2 (en) 1987-08-03 1987-08-03 Magneto-optical disk drive

Country Status (1)

Country Link
JP (1) JP2576521B2 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0340236A (en) * 1989-07-07 1991-02-21 Nec Corp Optical recording and reproducing device
JPH0391124A (en) * 1989-09-01 1991-04-16 Sony Corp Optical disk driving device
JPH0393047A (en) * 1989-09-05 1991-04-18 Nec Corp Optical recording and reproducing device
JPH03171437A (en) * 1989-11-30 1991-07-24 Matsushita Electric Ind Co Ltd Signal recording method and optimum power setting device
JPH04212720A (en) * 1990-03-14 1992-08-04 Matsushita Electric Ind Co Ltd Recording method for optical information recording member
US5182734A (en) * 1988-06-24 1993-01-26 Sony Corporation Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics
US5220556A (en) * 1989-10-27 1993-06-15 Ricoh Company, Ltd. Optical disk with identification phase-encoded area
JPH0644563A (en) * 1992-01-22 1994-02-18 Nippon Columbia Co Ltd Optical disk recorder
JPH06223428A (en) * 1993-01-23 1994-08-12 Nec Corp Magneto-optical recording medium and its recording and reproducing method
US6067284A (en) * 1997-06-24 2000-05-23 Fujitsu Limited Recording power adjustment for optical storage apparatus
US6834033B2 (en) 1992-10-05 2004-12-21 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54107311A (en) * 1978-02-09 1979-08-23 Matsushita Electric Ind Co Ltd Fluctuation compensator of reproduction envelope signal in optical recorder-reproducer
JPS5880138A (en) * 1981-11-06 1983-05-14 Teac Co Optical recording system
JPS5914144A (en) * 1982-07-13 1984-01-25 Fujitsu Ltd Recording control system of optical disk
JPS59227043A (en) * 1983-06-06 1984-12-20 Canon Inc Optical information recording system
JPS61165825A (en) * 1985-01-17 1986-07-26 Olympus Optical Co Ltd Optical information recording method
JPS63121130A (en) * 1986-11-07 1988-05-25 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54107311A (en) * 1978-02-09 1979-08-23 Matsushita Electric Ind Co Ltd Fluctuation compensator of reproduction envelope signal in optical recorder-reproducer
JPS5880138A (en) * 1981-11-06 1983-05-14 Teac Co Optical recording system
JPS5914144A (en) * 1982-07-13 1984-01-25 Fujitsu Ltd Recording control system of optical disk
JPS59227043A (en) * 1983-06-06 1984-12-20 Canon Inc Optical information recording system
JPS61165825A (en) * 1985-01-17 1986-07-26 Olympus Optical Co Ltd Optical information recording method
JPS63121130A (en) * 1986-11-07 1988-05-25 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182734A (en) * 1988-06-24 1993-01-26 Sony Corporation Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics
JPH0340236A (en) * 1989-07-07 1991-02-21 Nec Corp Optical recording and reproducing device
JPH0391124A (en) * 1989-09-01 1991-04-16 Sony Corp Optical disk driving device
JPH0393047A (en) * 1989-09-05 1991-04-18 Nec Corp Optical recording and reproducing device
US5220556A (en) * 1989-10-27 1993-06-15 Ricoh Company, Ltd. Optical disk with identification phase-encoded area
JPH03171437A (en) * 1989-11-30 1991-07-24 Matsushita Electric Ind Co Ltd Signal recording method and optimum power setting device
JPH04212720A (en) * 1990-03-14 1992-08-04 Matsushita Electric Ind Co Ltd Recording method for optical information recording member
JPH0644563A (en) * 1992-01-22 1994-02-18 Nippon Columbia Co Ltd Optical disk recorder
US6834033B2 (en) 1992-10-05 2004-12-21 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US6853611B2 (en) 1992-10-05 2005-02-08 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US6930965B2 (en) 1992-10-05 2005-08-16 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7924693B2 (en) 1992-10-05 2011-04-12 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
JPH06223428A (en) * 1993-01-23 1994-08-12 Nec Corp Magneto-optical recording medium and its recording and reproducing method
US6067284A (en) * 1997-06-24 2000-05-23 Fujitsu Limited Recording power adjustment for optical storage apparatus

Also Published As

Publication number Publication date
JP2576521B2 (en) 1997-01-29

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