JPS60129954A - 光磁気デイスクレコ−ダ - Google Patents
光磁気デイスクレコ−ダInfo
- Publication number
- JPS60129954A JPS60129954A JP23911983A JP23911983A JPS60129954A JP S60129954 A JPS60129954 A JP S60129954A JP 23911983 A JP23911983 A JP 23911983A JP 23911983 A JP23911983 A JP 23911983A JP S60129954 A JPS60129954 A JP S60129954A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- prism
- signals
- disk
- photodetectors
- 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
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
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23911983A JPS60129954A (ja) | 1983-12-19 | 1983-12-19 | 光磁気デイスクレコ−ダ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23911983A JPS60129954A (ja) | 1983-12-19 | 1983-12-19 | 光磁気デイスクレコ−ダ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60129954A true JPS60129954A (ja) | 1985-07-11 |
JPH0522305B2 JPH0522305B2 (fr) | 1993-03-29 |
Family
ID=17040070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23911983A Granted JPS60129954A (ja) | 1983-12-19 | 1983-12-19 | 光磁気デイスクレコ−ダ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60129954A (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2578083A1 (fr) * | 1985-02-27 | 1986-08-29 | Xerox Corp | Unite de disque optique utilisant les formes effacable et non effacable de stockage |
JPS6260147A (ja) * | 1985-09-11 | 1987-03-16 | Matsushita Electric Ind Co Ltd | 光磁気デイスク |
US4879703A (en) * | 1986-07-09 | 1989-11-07 | Hitachi, Ltd. | Magneto-optic memory apparatus with defect detection of recording medium during erasing operation |
US4879101A (en) * | 1985-06-17 | 1989-11-07 | Shin Nihon Chemical Industry Co., Ltd. | Method for producing a magnesia powder for use as an electrical insulating material |
US5251196A (en) * | 1987-09-30 | 1993-10-05 | Deutsche Thomson-Brandt Gmbh | Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium |
JPH09106591A (ja) * | 1996-10-23 | 1997-04-22 | Hitachi Ltd | 光磁気ディスク装置 |
WO2003077250A1 (fr) * | 2002-03-08 | 2003-09-18 | Sony Corporation | Support d'enregistrement et dispositif de reproduction associe, procede de reproduction, appareil destine a la fabrication de ce support d'enregistrement, procede de fabrication de ce support d'enregistrement et dispositif d'enregistrement |
WO2004023461A1 (fr) * | 2002-08-30 | 2004-03-18 | Fujitsu Limited | Dispositif de memorisation optique et procede pour lire un support d'enregistrement optique |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5744241A (en) * | 1980-08-27 | 1982-03-12 | Matsushita Electric Ind Co Ltd | Magnetooptic reproducer |
JPS57117106A (en) * | 1981-01-09 | 1982-07-21 | Olympus Optical Co Ltd | Optical magnetic recording and reproducing method |
JPS5982646A (ja) * | 1982-10-29 | 1984-05-12 | Sharp Corp | 光磁気記憶装置 |
-
1983
- 1983-12-19 JP JP23911983A patent/JPS60129954A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5744241A (en) * | 1980-08-27 | 1982-03-12 | Matsushita Electric Ind Co Ltd | Magnetooptic reproducer |
JPS57117106A (en) * | 1981-01-09 | 1982-07-21 | Olympus Optical Co Ltd | Optical magnetic recording and reproducing method |
JPS5982646A (ja) * | 1982-10-29 | 1984-05-12 | Sharp Corp | 光磁気記憶装置 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2578083A1 (fr) * | 1985-02-27 | 1986-08-29 | Xerox Corp | Unite de disque optique utilisant les formes effacable et non effacable de stockage |
US4879101A (en) * | 1985-06-17 | 1989-11-07 | Shin Nihon Chemical Industry Co., Ltd. | Method for producing a magnesia powder for use as an electrical insulating material |
JPS6260147A (ja) * | 1985-09-11 | 1987-03-16 | Matsushita Electric Ind Co Ltd | 光磁気デイスク |
US4879703A (en) * | 1986-07-09 | 1989-11-07 | Hitachi, Ltd. | Magneto-optic memory apparatus with defect detection of recording medium during erasing operation |
US5251196A (en) * | 1987-09-30 | 1993-10-05 | Deutsche Thomson-Brandt Gmbh | Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium |
JPH09106591A (ja) * | 1996-10-23 | 1997-04-22 | Hitachi Ltd | 光磁気ディスク装置 |
WO2003077250A1 (fr) * | 2002-03-08 | 2003-09-18 | Sony Corporation | Support d'enregistrement et dispositif de reproduction associe, procede de reproduction, appareil destine a la fabrication de ce support d'enregistrement, procede de fabrication de ce support d'enregistrement et dispositif d'enregistrement |
US7689105B2 (en) | 2002-03-08 | 2010-03-30 | Sony Corporation | Record medium and its reproducer, reproducing method, record medium manufacturing apparatus, record medium manufacturing method, and recorder |
WO2004023461A1 (fr) * | 2002-08-30 | 2004-03-18 | Fujitsu Limited | Dispositif de memorisation optique et procede pour lire un support d'enregistrement optique |
US7283445B2 (en) | 2002-08-30 | 2007-10-16 | Fujitsu Limited | Optical storage device and reading method for optical storage medium |
Also Published As
Publication number | Publication date |
---|---|
JPH0522305B2 (fr) | 1993-03-29 |
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