FI891202A - Optiskt eller magnetooptiskt datasystem. - Google Patents
Optiskt eller magnetooptiskt datasystem. Download PDFInfo
- Publication number
- FI891202A FI891202A FI891202A FI891202A FI891202A FI 891202 A FI891202 A FI 891202A FI 891202 A FI891202 A FI 891202A FI 891202 A FI891202 A FI 891202A FI 891202 A FI891202 A FI 891202A
- Authority
- FI
- Finland
- Prior art keywords
- magnetooptiskt
- optiskt
- datasystem
- eller
- optiskt eller
- Prior art date
Links
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 Head (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16765988A | 1988-03-14 | 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 (2)
Publication Number | Publication Date |
---|---|
FI891202A0 FI891202A0 (fi) | 1989-03-14 |
FI891202A true FI891202A (fi) | 1989-09-15 |
Family
ID=26863354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI891202A FI891202A (fi) | 1988-03-14 | 1989-03-14 | Optiskt eller magnetooptiskt datasystem. |
Country Status (12)
Country | Link |
---|---|
JP (1) | JPH0210568A (fi) |
KR (1) | KR890015281A (fi) |
BR (1) | BR8901169A (fi) |
DE (1) | DE3908150A1 (fi) |
ES (1) | ES2013115A6 (fi) |
FI (1) | FI891202A (fi) |
FR (1) | FR2628565B1 (fi) |
GB (1) | GB2216710B (fi) |
IL (1) | IL89579A0 (fi) |
NL (1) | NL8900611A (fi) |
NO (1) | NO891075L (fi) |
SE (1) | SE8900879L (fi) |
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 (fi) * | 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 Ind 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 |
WO1985002933A1 (en) * | 1983-12-27 | 1985-07-04 | 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 |
US4843604A (en) * | 1985-10-16 | 1989-06-27 | 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 |
AU600280B2 (en) * | 1986-07-02 | 1990-08-09 | Sony Corporation | Apparatus for optically recording and reproducing information in record tracks on a rotatable record disc |
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 - Fee Related
- 1989-03-10 IL IL89579A patent/IL89579A0/xx unknown
- 1989-03-13 BR BR898901169A patent/BR8901169A/pt unknown
- 1989-03-13 SE SE8900879A patent/SE8900879L/xx not_active Application Discontinuation
- 1989-03-13 NO NO89891075A patent/NO891075L/no unknown
- 1989-03-13 FR FR8903249A patent/FR2628565B1/fr not_active Expired - Fee Related
- 1989-03-13 DE DE3908150A patent/DE3908150A1/de not_active Withdrawn
- 1989-03-14 KR KR1019890003147A patent/KR890015281A/ko not_active Application Discontinuation
- 1989-03-14 FI FI891202A patent/FI891202A/fi not_active IP Right Cessation
- 1989-03-14 ES ES8900926A patent/ES2013115A6/es not_active Expired - Lifetime
- 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 |
---|---|
NL8900611A (nl) | 1989-10-02 |
FI891202A0 (fi) | 1989-03-14 |
KR890015281A (ko) | 1989-10-28 |
ES2013115A6 (es) | 1990-04-16 |
SE8900879L (sv) | 1989-09-15 |
GB2216710A (en) | 1989-10-11 |
GB8905108D0 (en) | 1989-04-19 |
SE8900879D0 (sv) | 1989-03-13 |
FR2628565A1 (fr) | 1989-09-15 |
FR2628565B1 (fr) | 1996-05-15 |
JPH0210568A (ja) | 1990-01-16 |
DE3908150A1 (de) | 1989-11-30 |
GB2216710B (en) | 1992-09-02 |
NO891075D0 (no) | 1989-03-13 |
IL89579A0 (en) | 1989-09-10 |
BR8901169A (pt) | 1989-10-31 |
NO891075L (no) | 1989-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI895778A0 (fi) | Anlaeggning foer foerstoering av aerosol- och/eller frysmedel. | |
FI891949A0 (fi) | Vinterlandskapsrum eller rumsstudium. | |
FI882949A0 (fi) | Foerfarande foer xerografisk tryckning av textilmaterial eller dylikt. | |
FI900732A0 (fi) | Skyddskaopa foer en skrivanordning eller liknande. | |
FI883103A0 (fi) | Foerfarande foer framstaellning eller reparering av en kulventil. | |
FI894260A0 (fi) | Foerfarande foer mesofil eller termofil aerobisk-enzymatisk luftning av vaetskeformiga organiska aemnen. | |
FI891202A0 (fi) | Optiskt eller magnetooptiskt datasystem. | |
FI904145A0 (fi) | Daevert foer raeddningsbaot eller dylikt. | |
FI870670A0 (fi) | Propellerdrivararrangemang foer fartyg eller motsvarande. | |
FI893690A (fi) | Bildtelefonterminal eller liknande. | |
FI880521A0 (fi) | Haolskaernings- och/eller flaensformningsanordning. | |
FI890762A0 (fi) | Inloppslaoda foer en pappersmaskin eller motsvarande. | |
FI892799A0 (fi) | Stroemprofileringsanordning foer en inloppslaoda i en pappers- och/eller kartongmaskin. | |
FI904146A0 (fi) | Daevert foer livraeddningsflotte eller dylikt. | |
FI884952A0 (fi) | Borstkonstruktion foer borstlameller, -lister eller motsvarande. | |
FI883996A0 (fi) | Ledningskonstruktion foer en eldistributions- och/eller informationsfoerbindelse. | |
FI883995A0 (fi) | Ledningskonstruktion foer en eldistributions- och/eller informationsfoerbindelse. | |
FI883994A0 (fi) | Ledningskonstruktion foer en eldistributions- och/eller informationsfoerbindelse. | |
FI882344A0 (fi) | Automatiskt foerflyttbar kassettflake eller liknande. | |
FI885206A0 (fi) | Modulhylla eller -skaop. | |
FI882521A0 (fi) | Anordning foer manuell drivning av en vinsch eller liknande drivorgan. | |
FI884942A0 (fi) | Torkningsdel av en pappersmaskin eller motsvarande. | |
FI880066A (fi) | Lyftanordning foer lyftande av lastpall eller liknande. | |
FI882127A0 (fi) | Anordning foer vaermeisolering av en linjebrunn eller motsvarande. | |
FI902742A0 (fi) | Bestaemning av salicylater eller reducerade pyridinnukleotider. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: BERNOULLI OPTICAL SYSTEMS COMPANY Owner name: IMPERIAL CHEMICAL INDUSTRIES PLC |