NO891075D0 - OPTICAL OR MAGNETO-OPTICAL DATA SYSTEM. - Google Patents
OPTICAL OR MAGNETO-OPTICAL DATA SYSTEM.Info
- Publication number
- NO891075D0 NO891075D0 NO891075A NO891075A NO891075D0 NO 891075 D0 NO891075 D0 NO 891075D0 NO 891075 A NO891075 A NO 891075A NO 891075 A NO891075 A NO 891075A NO 891075 D0 NO891075 D0 NO 891075D0
- Authority
- NO
- Norway
- Prior art keywords
- optical
- magneto
- data system
- optical data
- data
- 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 |
---|---|
NO891075D0 true NO891075D0 (en) | 1989-03-13 |
NO891075L NO891075L (en) | 1989-09-15 |
Family
ID=26863354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO89891075A NO891075L (en) | 1988-03-14 | 1989-03-13 | OPTICAL OR MAGNETO-OPTICAL DATA SYSTEM. |
Country Status (12)
Country | Link |
---|---|
JP (1) | JPH0210568A (en) |
KR (1) | KR890015281A (en) |
BR (1) | BR8901169A (en) |
DE (1) | DE3908150A1 (en) |
ES (1) | ES2013115A6 (en) |
FI (1) | FI891202A (en) |
FR (1) | FR2628565B1 (en) |
GB (1) | GB2216710B (en) |
IL (1) | IL89579A0 (en) |
NL (1) | NL8900611A (en) |
NO (1) | NO891075L (en) |
SE (1) | SE8900879L (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08315462A (en) * | 1995-05-22 | 1996-11-29 | Sony Corp | Magnetic head device, tape cartridge and recording/ reproducing device |
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 (en) * | 1972-01-11 | 1973-08-24 | Thomson Csf | |
NL169668C (en) * | 1972-09-02 | 1982-08-02 | Philips Nv | DEVICE FOR READING A DISC-SHAPED DATA CARRIER. |
US3912282A (en) * | 1972-11-17 | 1975-10-14 | Matsushita Electric Ind Co Ltd | Recording and reproducing apparatus using flexible recording media |
NL7316384A (en) * | 1973-11-29 | 1975-06-02 | Philips Nv | DEVICE FOR OPTICAL READING OF A REFECTING REGISTRATION CARRIER. |
US3927252A (en) * | 1974-04-02 | 1975-12-16 | Zenith Radio Corp | Biased video disc stabilizer system |
FR2312832A1 (en) * | 1975-05-30 | 1976-12-24 | Thomson Brandt | STABILIZATION DEVICE FOR SOFT DISCS, AND IN PARTICULAR VIDEO-DISCS, AND READING APPARATUS SUITABLE FOR THIS DEVICE |
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 (en) * | 1983-01-25 | 1987-11-06 | Bull Sa | OPTICAL FOCUSING DEVICE FOR READING A INFORMATION MEDIUM RUNNING BEFORE IT |
US4610009A (en) * | 1983-05-23 | 1986-09-02 | Xerox Corporation | Writing, erasing and readout system for a magneto-optic recording medium |
JPS6053863A (en) * | 1983-09-05 | 1985-03-27 | Sony Corp | Apparatus for detecting magnetizing direction of magnetic recording medium |
DE3374477D1 (en) * | 1983-12-21 | 1987-12-17 | Ibm | 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 (en) * | 1985-03-20 | 1986-09-24 | Hitachi Ltd | Photomagnetic disc device |
US4843600A (en) * | 1985-09-13 | 1989-06-27 | Canon Kabushiki Kaisha | Recording head for magneto-optical information recording apparatus |
JPS6282525A (en) * | 1985-10-08 | 1987-04-16 | Toshiba Corp | Optical head |
US4843604A (en) * | 1985-10-16 | 1989-06-27 | Sharp Kabushiki Kaisha | Beam controller for magneto-optical disc memory system |
JPS62204456A (en) * | 1986-03-03 | 1987-09-09 | Nippon Telegr & Teleph Corp <Ntt> | Optical disk device |
JPS62223841A (en) * | 1986-03-26 | 1987-10-01 | Hitachi Ltd | Converter for magnetic recording and reproducing |
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 (en) * | 1986-07-31 | 1997-01-22 | ソニー株式会社 | Magneto-optical recording device |
JPH0778916B2 (en) * | 1986-10-17 | 1995-08-23 | キヤノン株式会社 | Magneto-optical information reproducing device |
-
1989
- 1989-03-06 GB GB8905108A patent/GB2216710B/en not_active Expired - Fee Related
- 1989-03-10 IL IL89579A patent/IL89579A0/en unknown
- 1989-03-13 DE DE3908150A patent/DE3908150A1/en not_active Withdrawn
- 1989-03-13 BR BR898901169A patent/BR8901169A/en unknown
- 1989-03-13 FR FR8903249A patent/FR2628565B1/en not_active Expired - Fee Related
- 1989-03-13 SE SE8900879A patent/SE8900879L/en not_active Application Discontinuation
- 1989-03-13 NO NO89891075A patent/NO891075L/en unknown
- 1989-03-14 NL NL8900611A patent/NL8900611A/en unknown
- 1989-03-14 JP JP1059836A patent/JPH0210568A/en active Pending
- 1989-03-14 KR KR1019890003147A patent/KR890015281A/en not_active Application Discontinuation
- 1989-03-14 ES ES8900926A patent/ES2013115A6/en not_active Expired - Lifetime
- 1989-03-14 FI FI891202A patent/FI891202A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2628565A1 (en) | 1989-09-15 |
GB8905108D0 (en) | 1989-04-19 |
ES2013115A6 (en) | 1990-04-16 |
FI891202A0 (en) | 1989-03-14 |
IL89579A0 (en) | 1989-09-10 |
JPH0210568A (en) | 1990-01-16 |
GB2216710A (en) | 1989-10-11 |
GB2216710B (en) | 1992-09-02 |
NO891075L (en) | 1989-09-15 |
SE8900879L (en) | 1989-09-15 |
FI891202A (en) | 1989-09-15 |
KR890015281A (en) | 1989-10-28 |
BR8901169A (en) | 1989-10-31 |
NL8900611A (en) | 1989-10-02 |
DE3908150A1 (en) | 1989-11-30 |
FR2628565B1 (en) | 1996-05-15 |
SE8900879D0 (en) | 1989-03-13 |
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