JPH0158561B2 - - Google Patents
Info
- Publication number
- JPH0158561B2 JPH0158561B2 JP1858281A JP1858281A JPH0158561B2 JP H0158561 B2 JPH0158561 B2 JP H0158561B2 JP 1858281 A JP1858281 A JP 1858281A JP 1858281 A JP1858281 A JP 1858281A JP H0158561 B2 JPH0158561 B2 JP H0158561B2
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- recording
- coil
- magnetic field
- magnetic
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000010409 thin film Substances 0.000 claims description 6
- 239000010408 film Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 235000021438 curry Nutrition 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
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
- 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
- G11B11/10504—Recording
- G11B11/10506—Recording by modulating only the light beam of the transducer
-
- 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
- G11B11/10595—Control of operating function
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1858281A JPS57133503A (en) | 1981-02-10 | 1981-02-10 | Optical and magnetic recorder and reproducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1858281A JPS57133503A (en) | 1981-02-10 | 1981-02-10 | Optical and magnetic recorder and reproducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57133503A JPS57133503A (en) | 1982-08-18 |
| JPH0158561B2 true JPH0158561B2 (en]) | 1989-12-12 |
Family
ID=11975616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1858281A Granted JPS57133503A (en) | 1981-02-10 | 1981-02-10 | Optical and magnetic recorder and reproducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57133503A (en]) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57176505A (en) * | 1981-04-23 | 1982-10-29 | Olympus Optical Co Ltd | Bias magnetic field applying system |
| JPS59125728U (ja) * | 1983-02-07 | 1984-08-24 | パイオニア株式会社 | 光磁気記録装置 |
| JPS60630A (ja) * | 1983-06-16 | 1985-01-05 | Matsushita Electric Ind Co Ltd | 光学式記録再生装置 |
| NL8303281A (nl) * | 1983-09-26 | 1985-04-16 | Philips Nv | Werkwijze voor het schrijven van informatie in een magneto-optische registratiedrager, inrichting voor het uitvoeren van de werkwijze en een magneto-optische registratiedrager te gebruiken in een inrichting voor het uitvoeren van de werkwijze. |
| JPH0719403B2 (ja) * | 1984-04-02 | 1995-03-06 | 日本電気株式会社 | 光磁気記録再生消去装置 |
| JPH0693302B2 (ja) * | 1986-10-17 | 1994-11-16 | 株式会社日立製作所 | 光磁気記録再生装置 |
| JPS63144445A (ja) * | 1986-12-05 | 1988-06-16 | Fujitsu Ltd | 光磁気デイスク装置のフオ−カス制御方式 |
| JPS6455762A (en) * | 1987-08-26 | 1989-03-02 | Yokogawa Electric Corp | Magneto-optical disk inspection device |
| US5111440A (en) * | 1988-04-29 | 1992-05-05 | North American Philips Corporation | An apparatus for controlling the rotation and stabilizing the position of a magnet device |
| FR2632438A1 (fr) * | 1988-06-07 | 1989-12-08 | Philips Nv | Enregistreur magneto-optique a champ magnetique module |
| JP2701403B2 (ja) * | 1988-12-29 | 1998-01-21 | ソニー株式会社 | 光磁気デイスク装置 |
| EP0635827B1 (en) * | 1989-08-22 | 1997-07-23 | Sony Corporation | Magnetic head position control system |
| JPH0778918B2 (ja) * | 1989-12-13 | 1995-08-23 | 松下電器産業株式会社 | 情報記録再生装置 |
| JP2565004Y2 (ja) * | 1991-10-24 | 1998-03-11 | 日本電気ホームエレクトロニクス株式会社 | 光磁気記録装置 |
-
1981
- 1981-02-10 JP JP1858281A patent/JPS57133503A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57133503A (en) | 1982-08-18 |
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