JPS5873031A - 光デイスク情報読出装置 - Google Patents
光デイスク情報読出装置Info
- Publication number
- JPS5873031A JPS5873031A JP57161535A JP16153582A JPS5873031A JP S5873031 A JPS5873031 A JP S5873031A JP 57161535 A JP57161535 A JP 57161535A JP 16153582 A JP16153582 A JP 16153582A JP S5873031 A JPS5873031 A JP S5873031A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- information
- plane
- disk
- tracks
- 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
- 230000005693 optoelectronics Effects 0.000 title claims description 18
- 230000005381 magnetic domain Effects 0.000 claims description 39
- 230000003287 optical effect Effects 0.000 claims description 24
- 230000010287 polarization Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000005415 magnetization Effects 0.000 description 23
- 230000005684 electric field Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 11
- 238000000926 separation method Methods 0.000 description 8
- 230000001427 coherent effect Effects 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005670 electromagnetic radiation Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 230000010365 information processing Effects 0.000 description 4
- 230000005374 Kerr effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 101100242961 Bos taurus SLC46A1 gene Proteins 0.000 description 2
- 241001050985 Disco Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYUJRXVZSJCHDZ-UHFFFAOYSA-N 8-methylnonyl diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)(OCCCCCCCC(C)C)OC1=CC=CC=C1 RYUJRXVZSJCHDZ-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 241001672695 Discus macclintocki Species 0.000 description 1
- 102100038546 Fibronectin type III and SPRY domain-containing protein 1 Human genes 0.000 description 1
- 101001030521 Homo sapiens Fibronectin type III and SPRY domain-containing protein 1 Proteins 0.000 description 1
- 101100370133 Homo sapiens TPH1 gene Proteins 0.000 description 1
- LFVLUOAHQIVABZ-UHFFFAOYSA-N Iodofenphos Chemical compound COP(=S)(OC)OC1=CC(Cl)=C(I)C=C1Cl LFVLUOAHQIVABZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 102100024971 Tryptophan 5-hydroxylase 1 Human genes 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004804 winding Methods 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
- G11B11/10532—Heads
- G11B11/10541—Heads for reproducing
- G11B11/10543—Heads for reproducing using optical beam of radiation
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8119543A FR2514913B1 (fr) | 1981-10-16 | 1981-10-16 | Dispositif opto-electronique de lecture d'informations contenues sur un support magnetique |
| FR8119543 | 1981-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5873031A true JPS5873031A (ja) | 1983-05-02 |
| JPH038024B2 JPH038024B2 (enExample) | 1991-02-05 |
Family
ID=9263134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57161535A Granted JPS5873031A (ja) | 1981-10-16 | 1982-09-16 | 光デイスク情報読出装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4510544A (enExample) |
| EP (1) | EP0077693B1 (enExample) |
| JP (1) | JPS5873031A (enExample) |
| DE (1) | DE3276398D1 (enExample) |
| FR (1) | FR2514913B1 (enExample) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2526987B1 (fr) * | 1982-05-14 | 1987-07-03 | Bull Sa | Procede opto-electronique de lecture d'informations contenues sur un support magnetique et circuit pour le mettre en oeuvre |
| FR2539883B1 (fr) * | 1983-01-25 | 1987-11-06 | Bull Sa | Dispositif optique de focalisation pour la lecture d'un support d'informations defilant devant lui |
| US4638383A (en) * | 1984-02-22 | 1987-01-20 | Mcginlay James G | Micro hard-disk drive system |
| JPS61160845A (ja) * | 1985-01-09 | 1986-07-21 | Nippon Kogaku Kk <Nikon> | 光デイスクの記録再生装置 |
| FR2601465B1 (fr) * | 1986-07-11 | 1988-10-21 | Bull Sa | Dispositif modulateur haute frequence de polarisation de la lumiere |
| FR2609201B1 (fr) * | 1986-12-30 | 1989-10-27 | Bull Sa | Tete d'ecriture magnetique et de lecture optique d'un support d'informations |
| FR2615995A1 (fr) * | 1987-05-27 | 1988-12-02 | Bull Sa | Mode d'ecriture d'informations sur un support d'enregistrement magnetique |
| FR2621411B1 (fr) | 1987-10-05 | 1989-12-08 | Bull Sa | Dispositif asservi de lecture optique et d'ecriture magnetique d'un support d'informations |
| JP3350072B2 (ja) * | 1991-11-12 | 2002-11-25 | パイオニア株式会社 | ピックアップ装置 |
| US5940549A (en) * | 1996-07-30 | 1999-08-17 | Seagate Technology, Incorporated | Optical system and method using optical fibers for storage and retrieval of information |
| US6034938A (en) * | 1996-07-30 | 2000-03-07 | Seagate Technology, Inc. | Data storage system having an optical processing flying head |
| US6850475B1 (en) | 1996-07-30 | 2005-02-01 | Seagate Technology, Llc | Single frequency laser source for optical data storage system |
| US5850375A (en) * | 1996-07-30 | 1998-12-15 | Seagate Technology, Inc. | System and method using optical fibers in a data storage and retrieval system |
| US6574015B1 (en) | 1998-05-19 | 2003-06-03 | Seagate Technology Llc | Optical depolarizer |
| US6275349B1 (en) * | 1998-12-02 | 2001-08-14 | Storage Technology Corporation | Integrated optical tracking system for magnetic media |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716847A (en) * | 1970-06-10 | 1973-02-13 | Cii | Mirror utilized in magneto-optical readout system to eliminate fresnel effect |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3158846A (en) * | 1961-01-23 | 1964-11-24 | Silverman Daniel | Information retrieval systems |
| US3769465A (en) * | 1969-08-18 | 1973-10-30 | Ibm | Electronic servo in magnetic recording readout |
| FR2057678A5 (enExample) * | 1969-08-18 | 1971-05-21 | Ibm | |
| US3662364A (en) * | 1969-12-22 | 1972-05-09 | Ibm | Scan control for synchronizing a data signal with a clock signal |
| DE2033557B2 (de) * | 1970-07-07 | 1978-03-16 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | System zur Speicherung und Wieder gäbe von Daten |
| GB1316917A (en) * | 1970-12-21 | 1973-05-16 | Ibm | Magneto-optic transducers |
| DE2108837C3 (de) * | 1971-02-25 | 1973-11-15 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Anordnung zur Abtastung von Signalen längs mindestens einer Spur |
| US3737236A (en) * | 1972-01-03 | 1973-06-05 | Corning Glass Works | Magnetooptic readout system utilizing optical waveguide fibers |
| US3739154A (en) * | 1972-05-01 | 1973-06-12 | Ampex | Optical tracking apparatus for read out of high density recording |
| CA947867A (en) * | 1972-05-16 | 1974-05-21 | H. Keith Eastwood | Computer memory device |
| FR2260833A1 (en) * | 1974-02-13 | 1975-09-05 | Proc Opto Electro Exploit | Optical reader for linear recording - projects image onto scanning photodiode array to form segments |
| BE831264A (fr) * | 1975-07-11 | 1975-11-03 | Systeme de lecture d'informations sur disque | |
| WO1980001016A1 (fr) * | 1978-11-01 | 1980-05-15 | Hitachi Ltd | Dispositif de detection d'anisotropie magneto-optique |
| JPS55142424A (en) * | 1979-04-18 | 1980-11-07 | Ibm | Sensor for optical data memory |
-
1981
- 1981-10-16 FR FR8119543A patent/FR2514913B1/fr not_active Expired
-
1982
- 1982-03-31 EP EP82400594A patent/EP0077693B1/fr not_active Expired
- 1982-03-31 DE DE8282400594T patent/DE3276398D1/de not_active Expired
- 1982-09-14 US US06/417,904 patent/US4510544A/en not_active Expired - Fee Related
- 1982-09-16 JP JP57161535A patent/JPS5873031A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716847A (en) * | 1970-06-10 | 1973-02-13 | Cii | Mirror utilized in magneto-optical readout system to eliminate fresnel effect |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0077693B1 (fr) | 1987-05-20 |
| EP0077693A1 (fr) | 1983-04-27 |
| FR2514913B1 (fr) | 1986-07-04 |
| DE3276398D1 (en) | 1987-06-25 |
| US4510544A (en) | 1985-04-09 |
| FR2514913A1 (fr) | 1983-04-22 |
| JPH038024B2 (enExample) | 1991-02-05 |
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