JPS5661054A - Recording and reproducing device - Google Patents

Recording and reproducing device

Info

Publication number
JPS5661054A
JPS5661054A JP14004780A JP14004780A JPS5661054A JP S5661054 A JPS5661054 A JP S5661054A JP 14004780 A JP14004780 A JP 14004780A JP 14004780 A JP14004780 A JP 14004780A JP S5661054 A JPS5661054 A JP S5661054A
Authority
JP
Japan
Prior art keywords
recording
reproducing
inversion area
heating
disc
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.)
Pending
Application number
JP14004780A
Other languages
Japanese (ja)
Inventor
Keiji Suzuki
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.)
Teac Corp
Original Assignee
Teac 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 Teac Corp filed Critical Teac Corp
Priority to JP14004780A priority Critical patent/JPS5661054A/en
Publication of JPS5661054A publication Critical patent/JPS5661054A/en
Pending 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

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To enable to ensure recording and reproducing easily, by using recording and heating beam set so that the forming of magnetization inversion area is singly impossible. CONSTITUTION:A disc 11 turns with the operation of a recording switch, and an optical device 13 and a heating beam radiation device 43 are fed radially to the disc by a feeding mechanism 14. A beam 28 for recording and a beam 44 for heating are so set that they cannot singly form the mangetization inversion area on a magnetic substance thin film 17 of the disc 11, and the sum of the modulation beam 28 and the heating beam 44 forms the magnetization inversion area. At reproducing, recording/reproducing beam 28 and tracking beams 29, 30 are radiated on the recording track so that the light having specified rotating angle of polarized surface only can be detected at the photodetector 25, allowing to obtain the reproducing output through the use that the rotating angle of polarized surface of the reflected light at the magnetization inversion area is differenct from that in other locations.
JP14004780A 1980-10-06 1980-10-06 Recording and reproducing device Pending JPS5661054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14004780A JPS5661054A (en) 1980-10-06 1980-10-06 Recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14004780A JPS5661054A (en) 1980-10-06 1980-10-06 Recording and reproducing device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50022192A Division JPS5197414A (en) 1975-02-22 1975-02-22

Publications (1)

Publication Number Publication Date
JPS5661054A true JPS5661054A (en) 1981-05-26

Family

ID=15259738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14004780A Pending JPS5661054A (en) 1980-10-06 1980-10-06 Recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS5661054A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5954003A (en) * 1982-09-21 1984-03-28 Sharp Corp Thermomagnetic recorder
US4539662A (en) * 1981-06-04 1985-09-03 Pioneer Electronic Corporation Method and system for optically recording and playing back information on a recording medium having magnetization film thereon
EP0156058A2 (en) * 1983-08-06 1985-10-02 Brother Kogyo Kabushiki Kaisha Magneto-optical reading apparatus
US4549287A (en) * 1981-08-06 1985-10-22 Pioneer Electronic Corporation System for recording and playing back information with magneto-optical disk memory using record and readout light beams of different wavelengths
US4550346A (en) * 1982-04-15 1985-10-29 Pioneer Electronic Corporation Magneto-optic information recording system
US4670865A (en) * 1982-04-15 1987-06-02 Pioneer Electronic Corporation Method of recording information on magneto-optic information storage medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539662A (en) * 1981-06-04 1985-09-03 Pioneer Electronic Corporation Method and system for optically recording and playing back information on a recording medium having magnetization film thereon
US4549287A (en) * 1981-08-06 1985-10-22 Pioneer Electronic Corporation System for recording and playing back information with magneto-optical disk memory using record and readout light beams of different wavelengths
US4550346A (en) * 1982-04-15 1985-10-29 Pioneer Electronic Corporation Magneto-optic information recording system
US4670865A (en) * 1982-04-15 1987-06-02 Pioneer Electronic Corporation Method of recording information on magneto-optic information storage medium
JPS5954003A (en) * 1982-09-21 1984-03-28 Sharp Corp Thermomagnetic recorder
EP0156058A2 (en) * 1983-08-06 1985-10-02 Brother Kogyo Kabushiki Kaisha Magneto-optical reading apparatus
US5007021A (en) * 1983-08-06 1991-04-09 Brother Kogyo Kabushiki Kaisha Magneto-optical data reading apparatus

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