NL8900611A - Optisch of magneto-optisch datastelsel. - Google Patents
Optisch of magneto-optisch datastelsel. Download PDFInfo
- Publication number
- NL8900611A NL8900611A NL8900611A NL8900611A NL8900611A NL 8900611 A NL8900611 A NL 8900611A NL 8900611 A NL8900611 A NL 8900611A NL 8900611 A NL8900611 A NL 8900611A NL 8900611 A NL8900611 A NL 8900611A
- Authority
- NL
- Netherlands
- Prior art keywords
- medium
- optical
- light
- flexible
- read
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims description 110
- 230000006641 stabilisation Effects 0.000 claims description 24
- 238000011105 stabilization Methods 0.000 claims description 24
- 230000008878 coupling Effects 0.000 claims description 23
- 238000010168 coupling process Methods 0.000 claims description 23
- 238000005859 coupling reaction Methods 0.000 claims description 23
- 230000010287 polarization Effects 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 2
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 18
- 238000010276 construction Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000005381 magnetic domain Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005374 Kerr effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 235000021438 curry Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
- G11C13/06—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using magneto-optical elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- 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
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
- G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
-
- 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
-
- 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
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
- G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
-
- 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
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/1058—Flying heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/60—Guiding record carrier
- G11B15/62—Maintaining desired spacing between record carrier and head
- G11B15/64—Maintaining desired spacing between record carrier and head by fluid-dynamic spacing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
- G11B7/0031—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent using a rotating head, e.g. helicoidal recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0925—Electromechanical actuators for lens positioning
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16765988A | 1988-03-14 | 1988-03-14 | |
| US16765988 | 1988-03-14 | ||
| US16765288 | 1988-03-14 | ||
| US07/167,652 US5012463A (en) | 1988-03-14 | 1988-03-14 | Optical read/write storage system for flexible media having bernoulli stabilization at the optical head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8900611A true NL8900611A (nl) | 1989-10-02 |
Family
ID=26863354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8900611A NL8900611A (nl) | 1988-03-14 | 1989-03-14 | Optisch of magneto-optisch datastelsel. |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPH0210568A (es) |
| KR (1) | KR890015281A (es) |
| BR (1) | BR8901169A (es) |
| DE (1) | DE3908150A1 (es) |
| ES (1) | ES2013115A6 (es) |
| FI (1) | FI891202A7 (es) |
| FR (1) | FR2628565B1 (es) |
| GB (1) | GB2216710B (es) |
| IL (1) | IL89579A0 (es) |
| NL (1) | NL8900611A (es) |
| NO (1) | NO891075L (es) |
| SE (1) | SE8900879L (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08315462A (ja) * | 1995-05-22 | 1996-11-29 | Sony Corp | 磁気ヘッド装置、テープカートリッジ及び記録再生装置 |
| SG101448A1 (en) * | 2001-05-08 | 2004-01-30 | Sony Electronics Singapore Pte | A disk drive |
| US7164629B2 (en) | 2002-01-22 | 2007-01-16 | Ricoh Company, Ltd. | Method of controlling an optical disk apparatus |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2167258A5 (es) * | 1972-01-11 | 1973-08-24 | Thomson Csf | |
| NL169668C (nl) * | 1972-09-02 | 1982-08-02 | Philips Nv | Inrichting voor het uitlezen van een schijfvormige informatiedrager. |
| US3912282A (en) * | 1972-11-17 | 1975-10-14 | Matsushita Electric Industrial Co Ltd | Recording and reproducing apparatus using flexible recording media |
| NL7316384A (nl) * | 1973-11-29 | 1975-06-02 | Philips Nv | Inrichting voor het optisch uitlezen van een reflekterende registratiedrager. |
| US3927252A (en) * | 1974-04-02 | 1975-12-16 | Zenith Radio Corp | Biased video disc stabilizer system |
| FR2312832A1 (fr) * | 1975-05-30 | 1976-12-24 | Thomson Brandt | Dispositif de stabilisation de disques souples, et notamment de video-disques, et appareil de lecture adapte a ce dispositif |
| US4030815A (en) * | 1975-10-31 | 1977-06-21 | Rca Corporation | Hydrostatic bearing apparatus |
| GB1569667A (en) * | 1977-09-30 | 1980-06-18 | Ibm | Record/playback heat structure and data storage apparatus therefor |
| US4316278A (en) * | 1979-12-13 | 1982-02-16 | Mcdonnell Douglas Corporation | System for reading or recording indicia on a flexible disc |
| JPS5756807A (en) * | 1980-09-24 | 1982-04-05 | Canon Inc | Thin film waveguide type head |
| 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 |
| US4610009A (en) * | 1983-05-23 | 1986-09-02 | Xerox Corporation | Writing, erasing and readout system for a magneto-optic recording medium |
| JPS6053863A (ja) * | 1983-09-05 | 1985-03-27 | Sony Corp | 磁気記録媒体の磁化方向検出装置 |
| EP0146656B1 (en) * | 1983-12-21 | 1987-11-11 | International Business Machines Corporation | A disk cartridge having a flexible disk storage medium and a disk file including such a cartridge |
| EP0167570A1 (en) * | 1983-12-27 | 1986-01-15 | Ncr Corporation | Magnetic record medium and apparatus and method for tracking the same |
| US4661875A (en) * | 1985-01-24 | 1987-04-28 | Victor Company Of Japan, Ltd. | Information storage disc assembly |
| JPS61214256A (ja) * | 1985-03-20 | 1986-09-24 | Hitachi Ltd | 光磁気デイスク装置 |
| US4843600A (en) * | 1985-09-13 | 1989-06-27 | Canon Kabushiki Kaisha | Recording head for magneto-optical information recording apparatus |
| JPS6282525A (ja) * | 1985-10-08 | 1987-04-16 | Toshiba Corp | 光学ヘツド |
| EP0219124B1 (en) * | 1985-10-16 | 1993-04-14 | Sharp Kabushiki Kaisha | Beam controller for magneto-optical disc memory system |
| JPS62204456A (ja) * | 1986-03-03 | 1987-09-09 | Nippon Telegr & Teleph Corp <Ntt> | 光デイスク装置 |
| JPS62223841A (ja) * | 1986-03-26 | 1987-10-01 | Hitachi Ltd | 磁気記録再生変換器 |
| US4740851A (en) * | 1986-04-21 | 1988-04-26 | Iomega Corporation | Disk drive with spicule member |
| US4845696A (en) * | 1986-07-02 | 1989-07-04 | Sony Corporation | Apparatus for optically recording and reproducing information in record tracks on a rotatable record disk |
| JP2575120B2 (ja) * | 1986-07-31 | 1997-01-22 | ソニー株式会社 | 光磁気記録装置 |
| JPH0778916B2 (ja) * | 1986-10-17 | 1995-08-23 | キヤノン株式会社 | 光磁気情報再生装置 |
-
1989
- 1989-03-06 GB GB8905108A patent/GB2216710B/en not_active Expired - Lifetime
- 1989-03-10 IL IL89579A patent/IL89579A0/xx unknown
- 1989-03-13 FR FR8903249A patent/FR2628565B1/fr not_active Expired - Fee Related
- 1989-03-13 NO NO89891075A patent/NO891075L/no unknown
- 1989-03-13 DE DE3908150A patent/DE3908150A1/de not_active Withdrawn
- 1989-03-13 SE SE8900879A patent/SE8900879L/xx not_active Application Discontinuation
- 1989-03-13 BR BR898901169A patent/BR8901169A/pt unknown
- 1989-03-14 ES ES8900926A patent/ES2013115A6/es not_active Expired - Lifetime
- 1989-03-14 KR KR1019890003147A patent/KR890015281A/ko not_active Withdrawn
- 1989-03-14 FI FI891202A patent/FI891202A7/fi not_active IP Right Cessation
- 1989-03-14 JP JP1059836A patent/JPH0210568A/ja active Pending
- 1989-03-14 NL NL8900611A patent/NL8900611A/nl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR890015281A (ko) | 1989-10-28 |
| NO891075D0 (no) | 1989-03-13 |
| SE8900879D0 (sv) | 1989-03-13 |
| FR2628565B1 (fr) | 1996-05-15 |
| GB2216710B (en) | 1992-09-02 |
| SE8900879L (sv) | 1989-09-15 |
| DE3908150A1 (de) | 1989-11-30 |
| FI891202A7 (fi) | 1989-09-15 |
| GB8905108D0 (en) | 1989-04-19 |
| FI891202A0 (fi) | 1989-03-14 |
| ES2013115A6 (es) | 1990-04-16 |
| NO891075L (no) | 1989-09-15 |
| BR8901169A (pt) | 1989-10-31 |
| GB2216710A (en) | 1989-10-11 |
| IL89579A0 (en) | 1989-09-10 |
| FR2628565A1 (fr) | 1989-09-15 |
| JPH0210568A (ja) | 1990-01-16 |
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