DK7596A - Læse-/skrive-positionsstyring for diskdrev - Google Patents
Læse-/skrive-positionsstyring for diskdrev Download PDFInfo
- Publication number
- DK7596A DK7596A DK007596A DK7596A DK7596A DK 7596 A DK7596 A DK 7596A DK 007596 A DK007596 A DK 007596A DK 7596 A DK7596 A DK 7596A DK 7596 A DK7596 A DK 7596A
- Authority
- DK
- Denmark
- Prior art keywords
- disk drive
- position control
- write position
- drive read
- read
- Prior art date
Links
Classifications
-
- 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
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/041—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs contained within cartridges
- G11B17/043—Direct insertion, i.e. without external loading means
-
- 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
-
- 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
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/10563—Access of indexed parts
-
- 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
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/041—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs contained within cartridges
- G11B17/043—Direct insertion, i.e. without external loading means
- G11B17/0438—Direct insertion, i.e. without external loading means with mechanism for subsequent vertical movement of the disc and opening mechanism of the cartridge shutter
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
- G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
- G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
-
- 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
-
- 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
- G11B7/0908—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 for focusing only
-
- 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
- G11B7/0908—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 for focusing only
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
-
- 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
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
-
- 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
- G11B7/0933—Details of stationary parts
-
- 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
- G11B7/0935—Details of the moving parts
-
- 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
- G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
-
- 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
- G11B7/0945—Methods for initialising servos, start-up sequences
-
- 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
-
- 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
- G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to 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
- G11B11/10595—Control of operating function
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV 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
- G11B7/0908—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 for focusing only
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
- G11B2007/0919—Critical angle methods
-
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00745—Sectoring or header formats within a track
-
- 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
- G11B7/0901—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 for track following only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
- Optical Head (AREA)
- Rotational Drive Of Disk (AREA)
- Control Of Velocity Or Acceleration (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/376,882 US5729511A (en) | 1991-02-15 | 1995-01-25 | Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal |
US08/420,899 US5677899A (en) | 1991-02-15 | 1995-04-11 | Method for moving carriage assembly from initial position to target position relative to storage medium |
Publications (1)
Publication Number | Publication Date |
---|---|
DK7596A true DK7596A (da) | 1996-07-26 |
Family
ID=27007600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK007596A DK7596A (da) | 1995-01-25 | 1996-01-24 | Læse-/skrive-positionsstyring for diskdrev |
Country Status (12)
Country | Link |
---|---|
US (3) | US5677899A (no) |
EP (2) | EP0971343A2 (no) |
JP (2) | JPH08273169A (no) |
KR (1) | KR100297263B1 (no) |
AU (1) | AU699610B2 (no) |
BR (1) | BR9600223A (no) |
DK (1) | DK7596A (no) |
ID (1) | ID23814A (no) |
IL (1) | IL116892A0 (no) |
NO (1) | NO960283L (no) |
RU (2) | RU2181217C2 (no) |
SG (1) | SG42460A1 (no) |
Families Citing this family (94)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5677899A (en) | 1991-02-15 | 1997-10-14 | Discovision Associates | Method for moving carriage assembly from initial position to target position relative to storage medium |
US6088314A (en) * | 1997-01-28 | 2000-07-11 | Funai Electric Co., Ltd. | Disc reading apparatus using optical pick-up |
US6141305A (en) * | 1997-09-25 | 2000-10-31 | Sony Corporation | Optical disk recording and reproducing apparatus and method and tracking servo apparatus and method |
JPH11144250A (ja) * | 1997-11-06 | 1999-05-28 | Pioneer Electron Corp | 情報データの記録再生方法 |
DE19964230B4 (de) * | 1998-08-05 | 2005-09-22 | Mitsubishi Denki K.K. | Verfahren zur Handhabung von Fehlern in einer optischen Platte, eine optische Plattenvorrichtung und eine optische Platte |
JP2000057713A (ja) | 1998-08-05 | 2000-02-25 | Mitsubishi Electric Corp | 光ディスクの欠陥管理方法、光ディスク装置、及び、光ディスク |
US6466952B2 (en) | 1999-04-08 | 2002-10-15 | Hewlett-Packard Company | Method for transferring and indexing data from old media to new media |
KR100662669B1 (ko) * | 1999-07-08 | 2007-01-02 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 정보매체 주사장치 및 그 장치의 동작방법 |
US7054790B1 (en) * | 2000-05-18 | 2006-05-30 | Maxtor Corporation | Method and apparatus for storage device performance measurement |
JP4138227B2 (ja) * | 2000-06-29 | 2008-08-27 | 富士通株式会社 | データ記録方法およびデータ記録装置並びに光記録媒体 |
JP2002025139A (ja) * | 2000-07-06 | 2002-01-25 | Fujitsu Ltd | 情報記憶装置及び情報記憶方法 |
US7116621B2 (en) * | 2001-01-25 | 2006-10-03 | Dphi Acquisitions, Inc. | System and method for handling commands in an optical disc drive |
US7522480B2 (en) | 2001-01-25 | 2009-04-21 | Dphi Acquisitions, Inc. | Digital tracking servo system with multi-track seek with an acceleration clamp |
JP2002367251A (ja) * | 2001-06-08 | 2002-12-20 | Fujitsu Ltd | 光磁気記録媒体装置 |
TW529022B (en) * | 2001-12-11 | 2003-04-21 | Discovision Associates Inc | Optical path system of optical disk |
US6870342B2 (en) * | 2002-10-03 | 2005-03-22 | Seagate Technology Llc | Cosine bang-bang seek control for a voice coil of a disc drive |
US20040156302A1 (en) * | 2003-01-07 | 2004-08-12 | Matsushita Electric Industrial Co., Ltd. | Optical head |
US20040167811A1 (en) * | 2003-02-10 | 2004-08-26 | Chih-Hung Chien | Instant routing planning method |
US6982405B2 (en) * | 2003-04-28 | 2006-01-03 | Dell Products L.P. | System and method for using a photodiode to self-test an optical drive |
KR100677108B1 (ko) * | 2003-06-12 | 2007-02-01 | 삼성전자주식회사 | 정보 저장매체 |
JP3866691B2 (ja) * | 2003-07-01 | 2007-01-10 | シャープ株式会社 | 光ピックアップ装置およびそれを備えてなる光ディスク装置 |
KR100953637B1 (ko) * | 2003-07-07 | 2010-04-20 | 엘지전자 주식회사 | 광디스크 및 광디스크의 디스크정보 기록방법 |
EP1652178B1 (en) * | 2003-07-07 | 2009-05-13 | LG Electronics Inc. | Method for recording or reproducing control information |
JP4500025B2 (ja) * | 2003-09-04 | 2010-07-14 | 株式会社日立エルジーデータストレージ | 光ディスク装置及び光ディスク装置の制御方法 |
US7122990B2 (en) * | 2003-09-15 | 2006-10-17 | Princeton Technology Corporation | Digital servo motor controller IC design for preventing the power feedback effect during manual adjusting the servo motor |
TWI233114B (en) * | 2003-10-24 | 2005-05-21 | Lite On It Corp | Method of determining the time of executing optimal power calibration of an optical drive |
TWI249161B (en) * | 2003-11-06 | 2006-02-11 | Mediatek Inc | Servo loop system identification device in optical disc drive and optical disc drive having the same |
US8200331B2 (en) * | 2004-11-04 | 2012-06-12 | Cardiac Pacemakers, Inc. | System and method for filtering neural stimulation |
TW200532675A (en) * | 2004-03-26 | 2005-10-01 | Liteon It Corp | Method of determining the time of adjusting writing strategy of an optical drive |
US20060080507A1 (en) * | 2004-05-18 | 2006-04-13 | Tyndall John F | System and method for unit attention handling |
US7633839B2 (en) * | 2004-08-20 | 2009-12-15 | Hewlett-Packard Development Company, L.P. | Self-sensing active-damping voice coil |
US7840266B2 (en) * | 2005-03-11 | 2010-11-23 | Cardiac Pacemakers, Inc. | Integrated lead for applying cardiac resynchronization therapy and neural stimulation therapy |
US7480836B2 (en) * | 2005-04-25 | 2009-01-20 | Hewlett-Packard Development Company, L.P. | Monitoring error-handler vector in architected memory |
US7631161B2 (en) * | 2005-10-21 | 2009-12-08 | International Business Machines Corporation | Apparatus, system, and method for writing data to protected partitions of storage media |
US7675259B2 (en) * | 2006-01-16 | 2010-03-09 | Brother Kogyo Kabushiki Kaisha | Controller for DC motor |
US7433156B2 (en) * | 2006-02-10 | 2008-10-07 | Sae Magnetics (Hk) Ltd. | Flexure for minimizing fly height modulation of near-contact recording sliders in a disk drive |
JP4732988B2 (ja) * | 2006-09-11 | 2011-07-27 | パナソニック株式会社 | 画像記録再生装置 |
KR100850544B1 (ko) * | 2006-12-13 | 2008-08-05 | 삼성전기주식회사 | 모바일 기기용 엑츄에이터 |
JP4768673B2 (ja) * | 2007-05-31 | 2011-09-07 | 株式会社東芝 | 情報処理装置、および情報処理装置の制御方法 |
US8615539B2 (en) * | 2007-07-09 | 2013-12-24 | Tandberg Storage Asa | Coefficient control for filter in magnetic media read channel |
US8380774B2 (en) * | 2007-07-09 | 2013-02-19 | Tandberg Storage Asa | Coefficient memory for least mean square finite impulse response filter |
US8033467B2 (en) | 2007-07-30 | 2011-10-11 | Lasercard Corporation | Portable optical card readers |
TW200915019A (en) * | 2007-09-07 | 2009-04-01 | Nat University Corp Yokohama Nat University | Drive control method, drive control apparatus, stage control method, stage control apparatus, exposure method, exposure apparatus and measuring apparatus |
US8267388B2 (en) * | 2007-09-12 | 2012-09-18 | Xradia, Inc. | Alignment assembly |
US7885033B2 (en) * | 2007-11-09 | 2011-02-08 | Seagate Technology Llc | Anticipatory track switching |
US7996174B2 (en) | 2007-12-18 | 2011-08-09 | Teradyne, Inc. | Disk drive testing |
US8549912B2 (en) | 2007-12-18 | 2013-10-08 | Teradyne, Inc. | Disk drive transport, clamping and testing |
WO2009117102A2 (en) * | 2008-03-17 | 2009-09-24 | Npe Systems, Inc. | Background light detection system for a flow cytometer |
US8305751B2 (en) | 2008-04-17 | 2012-11-06 | Teradyne, Inc. | Vibration isolation within disk drive testing systems |
US8238099B2 (en) | 2008-04-17 | 2012-08-07 | Teradyne, Inc. | Enclosed operating area for disk drive testing systems |
US20090262455A1 (en) | 2008-04-17 | 2009-10-22 | Teradyne, Inc. | Temperature Control Within Disk Drive Testing Systems |
US8095234B2 (en) | 2008-04-17 | 2012-01-10 | Teradyne, Inc. | Transferring disk drives within disk drive testing systems |
US8117480B2 (en) | 2008-04-17 | 2012-02-14 | Teradyne, Inc. | Dependent temperature control within disk drive testing systems |
US8160739B2 (en) | 2008-04-17 | 2012-04-17 | Teradyne, Inc. | Transferring storage devices within storage device testing systems |
US8041449B2 (en) | 2008-04-17 | 2011-10-18 | Teradyne, Inc. | Bulk feeding disk drives to disk drive testing systems |
US7848106B2 (en) | 2008-04-17 | 2010-12-07 | Teradyne, Inc. | Temperature control within disk drive testing systems |
US7945424B2 (en) | 2008-04-17 | 2011-05-17 | Teradyne, Inc. | Disk drive emulator and method of use thereof |
US8102173B2 (en) | 2008-04-17 | 2012-01-24 | Teradyne, Inc. | Thermal control system for test slot of test rack for disk drive testing system with thermoelectric device and a cooling conduit |
JP2011524060A (ja) | 2008-06-03 | 2011-08-25 | テラダイン、 インコーポレイテッド | 記憶デバイスを処理する方法 |
KR100956827B1 (ko) * | 2008-07-02 | 2010-05-11 | 엘지전자 주식회사 | 기록 매체 재생장치 및 그 작동방법 |
US8628239B2 (en) | 2009-07-15 | 2014-01-14 | Teradyne, Inc. | Storage device temperature sensing |
US8116079B2 (en) | 2009-07-15 | 2012-02-14 | Teradyne, Inc. | Storage device testing system cooling |
US7995349B2 (en) | 2009-07-15 | 2011-08-09 | Teradyne, Inc. | Storage device temperature sensing |
US8687356B2 (en) | 2010-02-02 | 2014-04-01 | Teradyne, Inc. | Storage device testing system cooling |
US8547123B2 (en) | 2009-07-15 | 2013-10-01 | Teradyne, Inc. | Storage device testing system with a conductive heating assembly |
US7920380B2 (en) | 2009-07-15 | 2011-04-05 | Teradyne, Inc. | Test slot cooling system for a storage device testing system |
US8466699B2 (en) | 2009-07-15 | 2013-06-18 | Teradyne, Inc. | Heating storage devices in a testing system |
TWI447733B (zh) * | 2010-04-14 | 2014-08-01 | Phison Electronics Corp | 計算補償電壓與調整門檻值電壓之方法及記憶體裝置與控制器 |
US8510637B2 (en) | 2010-04-14 | 2013-08-13 | Phison Electronics Corp. | Data reading method, memory storage apparatus and memory controller thereof |
CN102237139B (zh) * | 2010-04-27 | 2015-01-21 | 群联电子股份有限公司 | 计算补偿电压与调整阀值电压方法及存储器装置与控制器 |
US9779780B2 (en) | 2010-06-17 | 2017-10-03 | Teradyne, Inc. | Damping vibrations within storage device testing systems |
US8687349B2 (en) | 2010-07-21 | 2014-04-01 | Teradyne, Inc. | Bulk transfer of storage devices using manual loading |
US9001456B2 (en) | 2010-08-31 | 2015-04-07 | Teradyne, Inc. | Engaging test slots |
US8892184B2 (en) | 2010-10-18 | 2014-11-18 | Siemens Medical Solutions Usa, Inc. | Systems and methods for reducing interference in a dual modality imaging system |
WO2014041589A1 (ja) * | 2012-09-14 | 2014-03-20 | 株式会社ハーモニック・ドライブ・システムズ | リニア直流モータ |
CN103778924A (zh) * | 2012-10-23 | 2014-05-07 | 鸿富锦精密工业(深圳)有限公司 | 测试装置和方法 |
CN103871435A (zh) * | 2012-12-10 | 2014-06-18 | 建兴电子科技股份有限公司 | 光驱及其操作方法 |
US9459312B2 (en) | 2013-04-10 | 2016-10-04 | Teradyne, Inc. | Electronic assembly test system |
US20140341008A1 (en) * | 2013-05-17 | 2014-11-20 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Testing device and testing method for testing performance parameter of disc player |
US10948534B2 (en) | 2017-08-28 | 2021-03-16 | Teradyne, Inc. | Automated test system employing robotics |
US10845410B2 (en) | 2017-08-28 | 2020-11-24 | Teradyne, Inc. | Automated test system having orthogonal robots |
US11226390B2 (en) | 2017-08-28 | 2022-01-18 | Teradyne, Inc. | Calibration process for an automated test system |
US10725091B2 (en) | 2017-08-28 | 2020-07-28 | Teradyne, Inc. | Automated test system having multiple stages |
US10983145B2 (en) | 2018-04-24 | 2021-04-20 | Teradyne, Inc. | System for testing devices inside of carriers |
US10613998B2 (en) * | 2018-07-30 | 2020-04-07 | EMC IP Holding Company LLC | Multi-level time decay storage queue |
US10775408B2 (en) | 2018-08-20 | 2020-09-15 | Teradyne, Inc. | System for testing devices inside of carriers |
US11244740B1 (en) | 2020-08-10 | 2022-02-08 | Micron Technology, Inc. | Adapting an error recovery process in a memory sub-system |
US11867749B2 (en) | 2020-10-22 | 2024-01-09 | Teradyne, Inc. | Vision system for an automated test system |
US11899042B2 (en) | 2020-10-22 | 2024-02-13 | Teradyne, Inc. | Automated test system |
US11754622B2 (en) | 2020-10-22 | 2023-09-12 | Teradyne, Inc. | Thermal control system for an automated test system |
US11754596B2 (en) | 2020-10-22 | 2023-09-12 | Teradyne, Inc. | Test site configuration in an automated test system |
US11953519B2 (en) | 2020-10-22 | 2024-04-09 | Teradyne, Inc. | Modular automated test system |
US12007411B2 (en) | 2021-06-22 | 2024-06-11 | Teradyne, Inc. | Test socket having an automated lid |
US20230046788A1 (en) * | 2021-08-16 | 2023-02-16 | Capital One Services, Llc | Systems and methods for resetting an authentication counter |
Family Cites Families (322)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US32574A (en) * | 1861-06-18 | Wateb-elevator | ||
US32051A (en) * | 1861-04-16 | Lotjghlin | ||
US32709A (en) * | 1861-07-02 | Soda-water apparatus | ||
US32431A (en) * | 1861-05-28 | Improvement in cultivators | ||
CA833100A (en) | 1970-01-27 | O. Johnson Keith | Optical transducer head and system | |
US2432432A (en) * | 1945-07-06 | 1947-12-09 | Eastman Kodak Co | Ortho pseudo stereo range finder |
US3310792A (en) * | 1963-05-20 | 1967-03-21 | Burroughs Corp | Magnetic head mount apparatus |
GB1168161A (en) * | 1967-01-30 | 1969-10-22 | Mullard Ltd | Improvements in or relating to Light Beam Deflector Systems |
US3518442A (en) * | 1968-06-06 | 1970-06-30 | Gauss Electrophysics Inc | Video playback assembly wherein the record disc has optical recordings on both sides |
US3530258A (en) * | 1968-06-28 | 1970-09-22 | Mca Technology Inc | Video signal transducer having servo controlled flexible fiber optic track centering |
GB1296036A (no) | 1968-11-27 | 1972-11-15 | ||
GB1285184A (en) * | 1969-04-30 | 1972-08-09 | Vickers Ltd | Optical image-splitting systems |
US3677621A (en) * | 1969-11-24 | 1972-07-18 | Vickers Ltd | Optical field flattening devices |
GB1417707A (en) | 1972-04-19 | 1975-12-17 | Rca Corp | Information playback system |
US4451913A (en) * | 1972-10-24 | 1984-05-29 | Discovision Associates | Video disc read back scanner |
US4809247A (en) | 1972-10-24 | 1989-02-28 | Discovision Associates | Video disc head tracking apparatus |
US4282598A (en) * | 1972-10-24 | 1981-08-04 | Discovision Associates | Video disc read back scanner |
US4703467A (en) * | 1972-10-24 | 1987-10-27 | Discovision Associates | Video disc read back scanner |
CA1013854A (en) | 1973-02-20 | 1977-07-12 | John S. Winslow | Videodisc mastering system |
US4225873A (en) * | 1978-03-27 | 1980-09-30 | Mca Disco-Vision, Inc. | Recording and playback system |
US4611318A (en) * | 1973-02-20 | 1986-09-09 | Discovision Associates | Method and apparatus for monitoring the storage of information on a storage medium |
US4583210A (en) * | 1973-02-20 | 1986-04-15 | Discovision Associates | Method and apparatus for storing and retrieving information |
US3997715A (en) * | 1974-03-25 | 1976-12-14 | Mca Disco-Vision, Inc. | Focusing system for videodisc player |
US3935570A (en) | 1974-07-22 | 1976-01-27 | Raser William H | Spinning-disk shaft position encoder |
US3931641A (en) * | 1974-08-22 | 1976-01-06 | International Business Machines Corporation | Transducer suspension mount apparatus |
AR205839A1 (es) * | 1974-09-30 | 1976-06-07 | Mca Disco Vision | Servodisposicion para recorrer opticamente y leer simultaneamente un canal de informacion almacenado en un disco de video |
FR2325987A1 (fr) | 1975-09-29 | 1977-04-22 | Thomson Brandt | Dispositif de lecture optique d'un enregistrement |
US4730065A (en) | 1976-07-19 | 1988-03-08 | American Cyanamid Company | 15-deoxy-16-hydroxy-16-substituted prostanoic acids and congeners |
US4120504A (en) | 1976-07-20 | 1978-10-17 | William Buttfield Brecht | Disk tracking and support apparatus |
US4161753A (en) * | 1977-07-08 | 1979-07-17 | International Business Machines Corporation | Video recording disk with interlacing of data for frames on the same track |
US4204199A (en) * | 1977-11-04 | 1980-05-20 | Mca Disco-Vision, Inc. | Method and means for encoding and decoding digital data |
US4307381A (en) * | 1977-11-04 | 1981-12-22 | Discovision Associates | Method and means for encoding and decoding digital data |
US4232388A (en) * | 1977-11-04 | 1980-11-04 | Mca Disco-Vision, Inc. | Method and means for encoding and decoding digital data |
US4371899A (en) * | 1978-03-27 | 1983-02-01 | Discovision Associates | Time base error correction system for player |
US4370679A (en) * | 1978-03-27 | 1983-01-25 | Discovision Associates | Gain correction system for videodisc player apparatus |
US4456914A (en) * | 1978-03-27 | 1984-06-26 | Discovision Associates | Method and apparatus for storing information on a storage medium |
US4358796A (en) * | 1978-03-27 | 1982-11-09 | Discovision Associates | Spindle servo system for videodisc player |
USRE32709E (en) | 1978-03-27 | 1988-07-05 | Discovision Associates | Tracking system for video disc player |
US4439848A (en) * | 1978-03-27 | 1984-03-27 | Discovision Associates | Focusing system for video disc player |
USRE32051E (en) | 1978-03-27 | 1985-12-17 | Discovision Associates | Tracking system and method for video disc player |
US4160156A (en) | 1978-05-04 | 1979-07-03 | Msi Data Corporation | Method and apparatus for reading bar coded data wherein the light source is periodically energized |
US4236050A (en) * | 1978-06-30 | 1980-11-25 | Mca Discovision, Inc. | System for recovering information from a movable information storage medium having a pilot signal with an aligned phase angle in adjacent tracks |
USRE32574E (en) | 1978-06-30 | 1988-01-05 | Discovision Associates | Method and apparatus for information retrieval from an optically readable storage medium |
US4313191A (en) * | 1978-06-30 | 1982-01-26 | Discovision Associates | Recording medium having a pilot signal with an aligned phase angle in adjacent tracks |
US4375091A (en) * | 1978-06-30 | 1983-02-22 | Discovision Associates | Method and apparatus for information retrieval from an optically readable storage medium |
US4191570A (en) * | 1978-10-10 | 1980-03-04 | Polychrome Corporation | Process for heat treating lithographic printing plates |
USRE32431E (en) | 1978-11-16 | 1987-06-02 | Discovision Associates | System for rotating an information storage disc at a variable angular velocity to recover information therefrom at a prescribed constant rate |
US4228326A (en) * | 1978-11-16 | 1980-10-14 | Mca Discovision Inc. | System for recording information on a rotatable storage disc, in a substantially uniform recording density |
US4190860A (en) * | 1978-11-16 | 1980-02-26 | Mca Discovision, Inc. | Digital method and apparatus for rotating an information storage disc |
US4232201A (en) * | 1978-11-24 | 1980-11-04 | Mca Discovision, Inc. | Dithered center tracking system |
US4232337A (en) * | 1978-12-13 | 1980-11-04 | Mca Discovision, Inc. | Method and apparatus for tracking an optically readable information track |
US4222072A (en) * | 1978-12-28 | 1980-09-09 | Discovision Associates | Video player/recorder with non-linear mark length modulation |
US4210931A (en) * | 1978-12-28 | 1980-07-01 | Discovision Associates | Video player and/or recorder with Hadamard transform |
BR7900180A (pt) | 1979-01-11 | 1980-09-02 | Mca Disco Vision | Aparelho e processo para leitura de informacoes registradas em uma pista de informacoes sobre uma superficie de um disco |
US4236105A (en) * | 1979-01-12 | 1980-11-25 | Mca Discovision, Inc. | Digital center tracking system |
US4234837A (en) * | 1979-01-12 | 1980-11-18 | Mca Discovision, Inc. | Digital center tracking system |
US4271334A (en) * | 1979-04-06 | 1981-06-02 | Discovision Associates | Apparatus for correcting for temperature-induced tracking errors in a system for recovering information from a recording disc |
CA1145464A (en) | 1979-08-22 | 1983-04-26 | Wayne R. Dakin | Programmed video record disc and related playback apparatus |
CA1125434A (en) | 1979-09-25 | 1982-06-08 | Discovision Associates | Mastering machine |
US5003526A (en) | 1980-07-16 | 1991-03-26 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
US5253244A (en) | 1980-07-16 | 1993-10-12 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
US5084852A (en) | 1980-07-16 | 1992-01-28 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
JPS5768813A (en) * | 1980-10-17 | 1982-04-27 | Matsushita Electric Ind Co Ltd | Optical information reader |
US4488279A (en) * | 1980-10-20 | 1984-12-11 | Discovision Associates | Video recorder-playback machine |
US4467467A (en) * | 1980-10-20 | 1984-08-21 | Discovision Associates | Video recorder-playback machine |
US4592037A (en) * | 1980-11-28 | 1986-05-27 | Hitachi, Ltd. | Device for displacing a pickup head in multi-axial directions |
JPS57103131A (en) * | 1980-12-18 | 1982-06-26 | Sony Corp | Biaxial driver |
JPS57127968A (en) * | 1981-01-28 | 1982-08-09 | Hitachi Ltd | Magnetic disc storage device |
US4571716A (en) * | 1981-02-02 | 1986-02-18 | Discovision Associates | Method and apparatus for scanning a recording medium for defects |
US4406000A (en) * | 1981-03-31 | 1983-09-20 | Discovision Associates | Tracking system for optical record medium |
US4414655A (en) * | 1981-03-31 | 1983-11-08 | Discovision Associates | Scanning beam control system |
NL8101669A (nl) * | 1981-04-03 | 1982-11-01 | Philips Nv | Inrichting voor het detekteren van de stand van een voorwerp. |
NL8103305A (nl) | 1981-07-10 | 1983-02-01 | Philips Nv | Opto-elektronische inrichting voor het met een stralingsbundel inschrijven en/of uitlezen van registratiesporen. |
US4502783A (en) * | 1981-12-03 | 1985-03-05 | Hughes Aircraft Company | Alignment stabilization prism |
US4774699A (en) * | 1981-12-21 | 1988-09-27 | Discovision Associates | Method and apparatus for positioning a read head to a selected track on a record disc |
US4701898A (en) * | 1981-12-21 | 1987-10-20 | Discovision Associates | Method and apparatus for locating a selected track on a record disc |
US4764915A (en) * | 1982-01-12 | 1988-08-16 | Discovision Associates | Method and apparatus for recording a multiplexed signal on a record medium |
US4598324A (en) * | 1982-01-12 | 1986-07-01 | Discovision Associates | Audio evaluation under control of video picture frame number |
US4755884A (en) * | 1982-01-12 | 1988-07-05 | Discovision Associates | Audio evaluation of information stored on a record medium under control of video picture frame number |
US5001568A (en) | 1982-01-12 | 1991-03-19 | Discovision Associates | Signal evaluation by accumulation at one rate and releasing and testing at a slower rate |
US4746991A (en) * | 1982-01-12 | 1988-05-24 | Discovision Associates | Recording characteristic evaluation of a recording medium with a time sequence of test signals |
US4524444A (en) * | 1982-01-12 | 1985-06-18 | Discovision Associates | Analyzing the signal transfer characteristics of a signal processing unit |
US4455634A (en) * | 1982-01-12 | 1984-06-19 | Discovision Associates | Audio/video quality monitoring system |
US4682246A (en) * | 1982-01-12 | 1987-07-21 | Discovision Associates | Characterizing the information transfer characteristics of a recording medium |
US5126990A (en) | 1982-01-12 | 1992-06-30 | Discovision Associates | Method of evaluating a storage medium by recirculating a test sample of a signal |
US4727433A (en) * | 1982-01-25 | 1988-02-23 | Discovision Associates | Video/audio coded data recovery from a record medium |
US4703368A (en) * | 1982-01-25 | 1987-10-27 | Discovision Associates | Multiple variable rate audio message recording and playback |
US4757393A (en) * | 1982-01-25 | 1988-07-12 | Discovision Associates | Multiple variable rate audio message playback |
US4638377A (en) * | 1982-01-25 | 1987-01-20 | Discovision Associates | Selectable video/audio coded data recovery from a record medium |
US4426043A (en) | 1982-02-16 | 1984-01-17 | Sperry Corporation | Forage harvester drive apparatus |
FR2522860B1 (fr) | 1982-03-02 | 1989-07-13 | Thomson Csf | Tete optique d'ecriture-lecture d'un disque optique et dispositif optique associe a une telle tete |
US4536863A (en) * | 1982-04-15 | 1985-08-20 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4751692A (en) * | 1982-04-15 | 1988-06-14 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4706133A (en) * | 1982-04-15 | 1987-11-10 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4845697A (en) | 1982-04-15 | 1989-07-04 | Discovision Associates | Method of time limited searching for a track address on an optically read information disc |
US4727532A (en) * | 1982-04-15 | 1988-02-23 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4568142A (en) * | 1982-04-26 | 1986-02-04 | Hitachi, Ltd. | Objective lens drive apparatus |
US4465977A (en) * | 1982-06-04 | 1984-08-14 | Discovision Associates | Erroneous pulse sequence detector |
US4499569A (en) * | 1982-09-07 | 1985-02-12 | Discovision Associates | Writing beam focus monitor |
NL8204023A (nl) * | 1982-10-19 | 1984-05-16 | Philips Nv | Inrichting voor het optisch uitlezen en/of inschrijven van informatie. |
US4805162A (en) | 1982-11-01 | 1989-02-14 | Storage Technology Partners Ii | Fine and coarse servo system for access and tracking on an optical disk |
JPS5990262A (ja) | 1982-11-15 | 1984-05-24 | Nippon Gakki Seizo Kk | デイスクの再生装置 |
JPS59104735A (ja) * | 1982-12-08 | 1984-06-16 | Sony Corp | 対物レンズ駆動装置 |
JPS59104733A (ja) * | 1982-12-08 | 1984-06-16 | Pioneer Electronic Corp | 光学式情報読取装置における光学系駆動装置 |
US4466034A (en) | 1982-12-27 | 1984-08-14 | Magnetic Peripherals Inc. | Carriage assembly |
US4504935A (en) * | 1983-02-14 | 1985-03-12 | U.S. Philips Corporation | Electrodynamic focus and radial slide drive for an optical disc system |
US4497534A (en) * | 1983-02-28 | 1985-02-05 | International Business Machines Corporation | Holographic optical head |
US4603363A (en) * | 1983-03-01 | 1986-07-29 | Storage Technology Partners Ii | Stop mechanism using an elastomeric element |
JPH0782655B2 (ja) * | 1983-04-28 | 1995-09-06 | オリンパス光学工業株式会社 | 光ヘッド |
US4720088A (en) * | 1983-05-18 | 1988-01-19 | Canon Kabushiki Kaisha | Optical system supporting device |
WO1984004841A1 (en) * | 1983-05-31 | 1984-12-06 | Matsushita Electric Ind Co Ltd | Apparatus for driving objective lens of optical disc player |
US4596444A (en) * | 1983-07-05 | 1986-06-24 | Alps Electric Co., Ltd. | Double cantilever support construction for optical systems |
CA1249744A (en) * | 1983-08-03 | 1989-02-07 | Mitsuru Takashima | Optical pickup having a driving unit |
US4697167A (en) * | 1983-09-19 | 1987-09-29 | Storage Technology Corporation | Sync pattern encoding system for data sectors written on a storage medium |
US4633471A (en) * | 1983-09-19 | 1986-12-30 | Storage Technology Partners Ii | Error detection and correction in an optical storage system |
US4791622A (en) * | 1983-09-19 | 1988-12-13 | Storage Technology Partners 11 | Optical data format employing resynchronizable data sectors |
US4562577A (en) * | 1983-09-19 | 1985-12-31 | Storage Technology Partners Ii | Shared encoder/decoder circuits for use with error correction codes of an optical disk system |
JPS6069841A (ja) | 1983-09-26 | 1985-04-20 | Toshiba Corp | 光学ヘッド装置 |
JPS6070563A (ja) | 1983-09-27 | 1985-04-22 | Toshiba Corp | 高密度螺旋描画装置 |
EP0156460B1 (en) * | 1984-01-31 | 1989-10-18 | Matsushita Electric Industrial Co., Ltd. | Pick-up arm for an optical disk player |
US4696566A (en) * | 1984-02-08 | 1987-09-29 | Sharp Kabushiki Kaisha | Three-dimensional driving arrangement |
JPH064415Y2 (ja) * | 1984-04-23 | 1994-02-02 | パイオニア株式会社 | レンズ駆動装置 |
JPS60239939A (ja) * | 1984-05-14 | 1985-11-28 | Hitachi Ltd | 対物レンズ駆動装置 |
US4627038A (en) * | 1984-07-05 | 1986-12-02 | Storage Technology Partners Ii | Optical disk storage unit having a servo system with different velocity inputs |
US4740941A (en) * | 1984-07-06 | 1988-04-26 | Storage Technology Partners 11 | System for aligning sector marks with data in a disk storage system |
US4677605A (en) | 1984-07-06 | 1987-06-30 | Storage Technology Partners Ii | Focus acquisition and maintenance for optical disk system |
US4694447A (en) * | 1984-07-12 | 1987-09-15 | International Business Machines Corp. | Optical signal recorders employing two lasers and methods therefor |
JPS6134734A (ja) | 1984-07-25 | 1986-02-19 | Sony Corp | 光学式デイスクプレ−ヤ |
DE3574302D1 (en) | 1984-10-02 | 1989-12-21 | Toshiba Kk | Optical head apparatus for recording and reproducing data on a recording medium |
US4688204A (en) * | 1984-11-16 | 1987-08-18 | Storage Technology Partners Ii | Pulsed optical data detection system |
US4752954A (en) | 1984-12-19 | 1988-06-21 | Kabushiki Kaisha Toshiba | Upstream signal control apparatus in bidirectional CATV system |
CA1256520A (en) * | 1985-02-08 | 1989-06-27 | Tetsu Yamamoto | Data converter pickup carriage assembly |
JPH0612572B2 (ja) | 1985-03-08 | 1994-02-16 | オリンパス光学工業株式会社 | 光学的情報記録再生装置 |
JPS61208641A (ja) * | 1985-03-13 | 1986-09-17 | Olympus Optical Co Ltd | 光学的情報記録再生装置 |
DE3618137A1 (de) | 1985-05-31 | 1986-12-11 | Hitachi, Ltd., Tokio/Tokyo | Bildplatten-zugriffsverfahren und bildplattenspeicher |
US4623837A (en) * | 1985-06-14 | 1986-11-18 | Discovision Associates | Audio/video quality monitoring system |
US4703470A (en) | 1985-08-15 | 1987-10-27 | Priam (Delaware) Corporation | Dynamic absorber device for use with disk drives |
JPH0668843B2 (ja) | 1985-08-16 | 1994-08-31 | ソニー株式会社 | 光学ピツクアツプ装置 |
US4829395A (en) | 1985-09-06 | 1989-05-09 | Warren Coon | Load beam/assembly |
US4815063A (en) | 1985-09-13 | 1989-03-21 | Yamaha Corporation | Disc motor control circuit for controlling the rotation of a disc in a disc playing device |
US4849952A (en) | 1985-09-18 | 1989-07-18 | Canon Kabushiki Kaisha | Magnetooptical information recording apparatus having intensified magnetic flux applying means |
JPH079732B2 (ja) | 1985-10-05 | 1995-02-01 | ソニー株式会社 | デイスク駆動装置 |
US4864444A (en) | 1985-10-31 | 1989-09-05 | Microscience Corporation | Latch for high performance linear actuator for memory storage device |
US5004901A (en) | 1987-06-04 | 1991-04-02 | Mitsubishi Denki Kabushiki Kaisha | Current mirror amplifier for use in an optical data medium driving apparatus and servo-circuit |
KR900007175B1 (ko) * | 1986-01-20 | 1990-09-29 | 가부시기가이샤 히다찌세이사꾸쇼 | 헤드 슬라이더 지지장치 |
US4823336A (en) | 1986-02-14 | 1989-04-18 | Ricoh Company, Limited | Optical disk drive |
KR900006183B1 (ko) | 1986-03-04 | 1990-08-25 | 상요 덴기 가부시기가이샤 | 광학식 픽업 장치 |
KR900006182B1 (ko) | 1986-03-04 | 1990-08-25 | 상요 덴기 가부시기가이샤 | 전기 기계 변환기 |
JPS62150732U (no) | 1986-03-17 | 1987-09-24 | ||
DE3783637D1 (de) | 1986-04-09 | 1993-03-04 | Hitachi Ltd | Optisches speichermedium und dessen informationsaufzeichnungs- und -loeschmethode und geraet dazu. |
US4842392A (en) | 1986-05-26 | 1989-06-27 | Matsushita Electric Industrial Co., Ltd. | Objective lens driving unit |
EP0247829A1 (en) | 1986-05-26 | 1987-12-02 | Pioneer Electronic Corporation | Method and apparatus for correcting loop gain of a fine adjustment servo loop |
US4797763A (en) | 1986-08-13 | 1989-01-10 | Micropolis Corporation | Compact magnetic head flexible suspension |
US4763314A (en) * | 1986-08-13 | 1988-08-09 | Optimem | Linear actuator for an optical disk storage apparatus |
JP2515479Y2 (ja) | 1986-10-03 | 1996-10-30 | アルプス電気株式会社 | 浮動式磁気ヘツド装置 |
EP0267749B1 (en) | 1986-11-12 | 1994-01-26 | Seiko Epson Corporation | Magnetic head supporting apparatus |
JPS63142531A (ja) | 1986-12-05 | 1988-06-14 | Sony Corp | 光デイスク情報記録再生装置のサ−ボ回路 |
US4870703A (en) | 1986-12-15 | 1989-09-26 | Raymond Engineering Inc. | Magnetic disc memory unit |
EP0273367B1 (en) | 1986-12-26 | 1994-02-16 | Kabushiki Kaisha Toshiba | Objective lens driving apparatus |
EP0273071B1 (en) | 1986-12-30 | 1991-08-28 | Ibm Deutschland Gmbh | Rotary access arm for optical disks |
JP2682621B2 (ja) | 1987-03-03 | 1997-11-26 | オリンパス光学工業株式会社 | バイアス磁界異常検出装置 |
DE3714026A1 (de) | 1987-04-27 | 1988-11-17 | Igor Groza | Informationsmagnettraeger mit magnetfeldschutz |
US5010538A (en) | 1987-05-25 | 1991-04-23 | Oki Electric Industry Co., Ltd. | Focus servo apparatus |
US4853811A (en) | 1987-08-03 | 1989-08-01 | International Business Machines Corporation | Magnetic disk drive with low profile head-suspension system |
US5077719A (en) | 1987-08-28 | 1991-12-31 | Fujitsu Limited | Optical disk access system |
US4942563A (en) | 1987-09-30 | 1990-07-17 | Kabushiki Kaisha Toshiba | Signal processing apparatus and method capable of providing precise digital data |
JPH01128238A (ja) | 1987-11-13 | 1989-05-19 | Toshiba Corp | 光学手段支持装置 |
US4996615A (en) | 1987-12-04 | 1991-02-26 | Alps Electric Co., Ltd. | Head assembly |
US4868694A (en) | 1987-12-11 | 1989-09-19 | Magnetic Peripherals Inc. | Flexure for rotary actuated arm |
US5003524A (en) | 1987-12-26 | 1991-03-26 | Kabushiki Kaisha Toshiba | Optical disk drive with an accurately positioned objective lens |
US4912583A (en) | 1988-03-23 | 1990-03-27 | Digital Equipment Corporation | Clamp for mounting head-load beam slider arm in a disk drive |
JPH01284816A (ja) | 1988-05-12 | 1989-11-16 | Olympus Optical Co Ltd | 光ピックアップ用対物レンズ |
JP2536436Y2 (ja) | 1988-05-25 | 1997-05-21 | シャープ株式会社 | 対物レンズ駆動装置 |
US5124971A (en) | 1988-07-12 | 1992-06-23 | Nec Corporation | Optical head driving device |
JPH0266739A (ja) | 1988-09-01 | 1990-03-06 | Pioneer Electron Corp | 光学式ビックアップ装置 |
US5018126A (en) | 1988-09-02 | 1991-05-21 | International Business Machines Corporation | Checking media operations and recording during optical recording |
JPH0276128A (ja) | 1988-09-13 | 1990-03-15 | Pioneer Electron Corp | フォーカスサーボ引込み方法 |
JPH0294126A (ja) | 1988-09-30 | 1990-04-04 | Matsushita Electric Ind Co Ltd | 対物レンズ駆動装置 |
US4945526A (en) | 1988-10-18 | 1990-07-31 | Laser Magnetic Storage International Company | Actuator assembly for optical disk systems |
US4942564A (en) | 1988-10-31 | 1990-07-17 | Hewlett-Packard Company | Servo system gain compensation method for magneto-optic disk drives |
US5020045A (en) | 1988-12-19 | 1991-05-28 | Eastman Kodak Company | Focus acquisition servo system and associated method |
US5220543A (en) | 1989-02-14 | 1993-06-15 | Victor Company Of Japan, Ltd. | Compact optical disc recording/reproducing system |
JPH0738270B2 (ja) | 1989-02-21 | 1995-04-26 | パイオニア株式会社 | ディスク演奏方法 |
JPH02220273A (ja) | 1989-02-21 | 1990-09-03 | Pioneer Electron Corp | ディスク演奏装置におけるスライダー制御装置 |
EP0414694B1 (en) | 1989-03-08 | 1996-01-24 | International Business Machines Corporation | Estimator positioning system and method |
WO1990012410A1 (en) | 1989-04-04 | 1990-10-18 | Matsushita Electric Industrial Co., Ltd. | Process for producing ceramic capacitors having varistor characteristics |
US5126983A (en) | 1989-04-12 | 1992-06-30 | Olympus Optical Co., Ltd. | Apparatus for optically recording information on opto-magnetic record medium having a minimized leakage magnetic field |
JPH0734495Y2 (ja) | 1989-05-09 | 1995-08-02 | パイオニア株式会社 | 光学式ピックアップ |
US5189649A (en) | 1989-05-24 | 1993-02-23 | Hewlett-Packard Company | Method and apparatus for directly overwriting magnetooptic data storage media |
US5097458A (en) | 1989-05-29 | 1992-03-17 | Ricoh Company, Ltd. | Servo control system for optical disk device |
US5317552A (en) | 1989-06-13 | 1994-05-31 | Kabushiki Kaisha Toshiba | Linear actuator for driving an optical head incorporated in an optical disk |
US5319624A (en) | 1989-06-13 | 1994-06-07 | Kabushiki Kaisha Toshiba | Electromagnetic actuator and optical disk apparatus incorporating the same |
JP2775009B2 (ja) | 1989-06-20 | 1998-07-09 | ソニー株式会社 | 光記録装置 |
US5136558A (en) | 1989-06-20 | 1992-08-04 | Applied Magnetics Corporation | Two axis electromagnetic actuator |
US5265079A (en) | 1991-02-15 | 1993-11-23 | Applied Magnetics Corporation | Seek actuator for optical recording |
JPH0323523A (ja) | 1989-06-21 | 1991-01-31 | Sony Corp | 光学ヘッド装置 |
DE69026429T2 (de) | 1989-06-30 | 1996-11-14 | Fuji Xerox Co Ltd | Magnetooptisches Aufzeichnungs-/Wiedergabegerät |
JP2667522B2 (ja) | 1989-07-06 | 1997-10-27 | 株式会社日立製作所 | 光ディスク装置 |
US5150343A (en) | 1989-07-19 | 1992-09-22 | Matsushita Electric Industrial Co., Ltd. | Miniaturized low-power-consumption optical head provided with a state transformation mechanism |
US5287334A (en) | 1989-07-29 | 1994-02-15 | Sony Corporation | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus |
US5025335B1 (en) | 1989-07-31 | 1995-12-26 | Conner Peripherals Inc | Architecture for 2 1/2 inch diameter single disk drive |
JP2798719B2 (ja) | 1989-08-15 | 1998-09-17 | オリンパス光学工業株式会社 | 光学系支持装置 |
JP2593941B2 (ja) | 1989-08-19 | 1997-03-26 | 富士通株式会社 | 光ディスク装置のアクチュエータオフセット除去装置 |
US5297125A (en) | 1989-08-25 | 1994-03-22 | Sony Corporation | Optical recording medium and information recording apparatus for recording bursts of low-pass filtered reproduce-only information in a wobbling pre-groove on the optical recording medium |
DE69026596T2 (de) | 1989-08-25 | 1996-10-10 | Sony Corp., Tokio/Tokyo | Optisches speichermedium, datenspeicherverfahren und -wiedergabe |
US5361247A (en) | 1989-09-12 | 1994-11-01 | Sharp Kabushiki Kaisha | Information recording and reproducing device with reproduction and automatic gain control circuit |
JPH03104027A (ja) | 1989-09-18 | 1991-05-01 | Sony Corp | 対物レンズ駆動装置 |
US5191570A (en) | 1989-11-07 | 1993-03-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical head locating mechanism for magnetically locating an optical head |
US4998011A (en) | 1989-11-17 | 1991-03-05 | Applied Magnetics Corporation | Flat plate focus sensing apparatus |
JP2600402B2 (ja) | 1989-11-20 | 1997-04-16 | 松下電器産業株式会社 | 光ディスク信号再生装置 |
JP3134290B2 (ja) | 1989-11-21 | 2001-02-13 | ソニー株式会社 | 光磁気記録装置 |
US5513167A (en) | 1989-12-20 | 1996-04-30 | Sony Corporation | Optical recording apparatus |
JPH03201264A (ja) | 1989-12-27 | 1991-09-03 | Sony Corp | 光ディスク装置 |
JP2797579B2 (ja) | 1989-12-28 | 1998-09-17 | ソニー株式会社 | 目標トラック位置検索装置 |
JPH03203032A (ja) | 1989-12-28 | 1991-09-04 | Toshiba Corp | 光学系移動装置 |
JP2844783B2 (ja) | 1990-01-09 | 1999-01-06 | ソニー株式会社 | ディスク再生装置 |
JPH077522B2 (ja) | 1990-01-31 | 1995-01-30 | シャープ株式会社 | レンズ駆動用支持体 |
US5361242A (en) | 1990-02-07 | 1994-11-01 | Canon Kabushiki Kaisha | External magnetic field application device including a heat dissipation member and a metal plate for dissipating heat |
JPH03263620A (ja) | 1990-03-13 | 1991-11-25 | Pioneer Electron Corp | ディスクプレーヤのサーボ装置 |
KR950006419B1 (ko) | 1990-04-16 | 1995-06-15 | 삼성전자주식회사 | 광기록 재생장치의 고속서치방법 |
JPH0411325A (ja) | 1990-04-27 | 1992-01-16 | Sony Corp | 光ディスク記録装置 |
JP2540224B2 (ja) | 1990-05-22 | 1996-10-02 | 松下電器産業株式会社 | 光ディスクのサ―ボ装置 |
JP2793698B2 (ja) | 1990-06-18 | 1998-09-03 | 株式会社リコー | フオーカスオフセット補正方法 |
US5241524A (en) | 1990-08-29 | 1993-08-31 | Olympus Optical Co., Ltd. | Method of edge recording on optical record medium |
KR940010943B1 (ko) | 1990-08-29 | 1994-11-19 | 가부시키가이샤 도시바 | 광디스크장치 |
JPH04123372A (ja) | 1990-09-13 | 1992-04-23 | Sony Corp | シーク制御回路 |
US5138605A (en) | 1990-10-05 | 1992-08-11 | Eastman Kodak Company | Low-profile radial access mechanism for disk recording/playback apparatus, with optical head mounted on a carriage |
GB2248989B (en) | 1990-10-15 | 1995-05-24 | Applied Magnetics Corp | Focus sensing apparatus and method |
US5245174A (en) | 1990-10-15 | 1993-09-14 | Applied Magnetics Corporation | Focus sensing apparatus utilizing a reflecting surface having variable reflectivity |
GB2249090B (en) | 1990-10-22 | 1994-04-06 | Heye Hermann | Apparatus for severing gobs from glass streams |
US5187627A (en) | 1990-11-09 | 1993-02-16 | Seagate Technology, Inc. | Magnetic latch and crash stop |
US5262913A (en) | 1990-11-09 | 1993-11-16 | Seagate Technology, Inc. | Easily adjustable crash stop for a disc drive |
US5365389A (en) | 1990-11-09 | 1994-11-15 | Seagate Technology, Inc. | Crash stop and magnetic latch for optimum use of disc space |
US5268800A (en) | 1990-11-13 | 1993-12-07 | Areal Technology | Disk drive servosystem using gray code |
JPH04181551A (ja) | 1990-11-16 | 1992-06-29 | Sony Corp | 光ディスク装置 |
US5313332A (en) | 1990-11-16 | 1994-05-17 | Applied Magnetics Corporation | Flexure suspension for two axis actuator |
US5341357A (en) | 1990-12-21 | 1994-08-23 | Sony Corporation | Optical disc recording apparatus |
JPH04339340A (ja) | 1991-01-28 | 1992-11-26 | Sony Corp | 光磁気記録再生方式 |
US5329512A (en) | 1991-02-05 | 1994-07-12 | Sony Corporation | Temperature detection of a magneto-optic recording medium for controlling irradiation of an erasure region |
JP2959586B2 (ja) | 1991-02-12 | 1999-10-06 | ソニー株式会社 | 光磁気ディスクの再生方法 |
EP0524315B1 (en) | 1991-02-13 | 1996-07-03 | Sony Corporation | Method for reproducing signal in optically recording medium |
US5729511A (en) | 1991-02-15 | 1998-03-17 | Discovision Associates | Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal |
US5677899A (en) | 1991-02-15 | 1997-10-14 | Discovision Associates | Method for moving carriage assembly from initial position to target position relative to storage medium |
JP2970008B2 (ja) | 1991-02-22 | 1999-11-02 | ソニー株式会社 | ディスク状記録媒体再生装置 |
JP3104358B2 (ja) | 1991-03-22 | 2000-10-30 | ソニー株式会社 | 光記録媒体 |
JP2964698B2 (ja) | 1991-04-26 | 1999-10-18 | ソニー株式会社 | 対物レンズ保持体及びその製造方法並びに対物レンズ保持部材ブロック |
JP3006158B2 (ja) | 1991-05-09 | 2000-02-07 | ソニー株式会社 | ディスク記録装置及びディスク再生装置 |
US5331622A (en) | 1991-05-28 | 1994-07-19 | Applied Magnetics Corporation | Compact optical head |
JPH05174390A (ja) | 1991-06-21 | 1993-07-13 | Sony Corp | 光学ブロックの支持機構 |
JP3241400B2 (ja) | 1991-06-24 | 2001-12-25 | ソニー株式会社 | 記録装置 |
JP3622986B2 (ja) | 1991-07-16 | 2005-02-23 | ソニー株式会社 | デイスク記録装置 |
US5155633A (en) | 1991-07-30 | 1992-10-13 | Applied Magnetics Corporation | Anamorphic achromatic prism for optical disk heads |
JPH0581685A (ja) | 1991-09-24 | 1993-04-02 | Sony Corp | 光学式デイスク装置 |
US5262613A (en) | 1991-09-24 | 1993-11-16 | General Laser, Inc. | Laser retrofit for mechanical engravers |
JPH0594665A (ja) | 1991-09-30 | 1993-04-16 | Sony Corp | デイスクプレイヤ |
US5349349A (en) | 1991-09-30 | 1994-09-20 | Sony Corporation | Modulator circuit for a recording for a digital recording medium |
US5311497A (en) | 1991-09-30 | 1994-05-10 | Sony Corporation | Pickup feeding apparatus for a double-sided reproducing disc player |
US5177640A (en) | 1991-10-08 | 1993-01-05 | Applied Magnetics Corporation | Two-axis moving coil actuator |
JPH05109092A (ja) | 1991-10-14 | 1993-04-30 | Sony Corp | 光テープ記録再生装置 |
US5428583A (en) | 1991-10-31 | 1995-06-27 | Sony Corporation | Magneto-optical disc recording/reproducing apparatus |
US5291110A (en) | 1991-10-31 | 1994-03-01 | Integral Peripherals, Inc. | Low acoustic noise seeking method and apparatus |
US5329503A (en) | 1991-10-31 | 1994-07-12 | Sony Corporation | Magneto-optical disc recording/reproducing apparatus |
JPH05144250A (ja) | 1991-11-19 | 1993-06-11 | Sony Corp | 光磁気デイスク駆動装置 |
DE69229451T2 (de) | 1991-11-20 | 1999-10-07 | Sony Corp., Tokio/Tokyo | Optische Abtasteinrichtung |
EP0543654B1 (en) * | 1991-11-22 | 1998-10-28 | Fujitsu Limited | Positioning control system |
JP3074877B2 (ja) | 1991-11-22 | 2000-08-07 | ソニー株式会社 | 光ディスクプレーヤ |
JPH05144185A (ja) | 1991-11-22 | 1993-06-11 | Sony Corp | オーデイオデータの記録方法 |
JP3039056B2 (ja) | 1991-11-25 | 2000-05-08 | ソニー株式会社 | 追記型光ディスク記録装置 |
US5270887A (en) | 1991-12-04 | 1993-12-14 | Western Digital Corporation | Compact disk drive head disk assembly with conformable tape seal |
JP3227677B2 (ja) | 1991-12-13 | 2001-11-12 | ソニー株式会社 | 記録媒体駆動装置 |
US5350917A (en) | 1991-12-27 | 1994-09-27 | Sony Corporation | Opto-magnetic recording polarization optical apparatus including a laser diode and a light absorbing film |
JP3042559B2 (ja) | 1992-01-14 | 2000-05-15 | ソニー株式会社 | ディスク記録再生方法 |
US5404342A (en) | 1992-01-16 | 1995-04-04 | Sony Corporation | Magnetic head device for magneto-optical disc system and magnetic head driving circuit |
JPH05225638A (ja) | 1992-02-10 | 1993-09-03 | Sony Corp | 光磁気ディスク再生装置 |
JP3039099B2 (ja) | 1992-02-14 | 2000-05-08 | ソニー株式会社 | 光ディスク記録装置およびその方法 |
JPH05234332A (ja) | 1992-02-18 | 1993-09-10 | Sony Corp | ディスク再生装置 |
DE69324858T2 (de) | 1992-02-19 | 1999-10-14 | Sony Corp. | Optisches aufzeichnungsmedium, aufzeichnungsmethode dafür, wiedergabemethode dafür und methode zur erzeugung eines spurfolgefehlersignals |
DE69318598T2 (de) | 1992-02-29 | 1998-09-10 | Sony Corp | Vorrichtung zur Aufzeichnung auf einer optischen Platte |
JP3084916B2 (ja) | 1992-03-31 | 2000-09-04 | ソニー株式会社 | ディスクプレーヤの再生データ処理回路 |
JPH05298809A (ja) | 1992-04-16 | 1993-11-12 | Sony Corp | 光ディスク装置 |
JP3220960B2 (ja) | 1992-04-24 | 2001-10-22 | ソニー株式会社 | 情報記録装置 |
JPH06103536B2 (ja) | 1992-04-28 | 1994-12-14 | インターナショナル・ビジネス・マシーンズ・コーポレイション | トラックアクセス装置及び方法 |
US5495455A (en) | 1992-04-28 | 1996-02-27 | Sony Corporation | Magneto-optical disk recording and reading apparatus and method wherein the recording head is controlled in the radial direction of the disk to a desired position |
US5450381A (en) | 1992-07-07 | 1995-09-12 | Sony Corporation | Magneto-optical recording utilizing signal phase adjustment |
JP3230319B2 (ja) | 1992-07-09 | 2001-11-19 | ソニー株式会社 | 音響再生装置 |
US5359579A (en) | 1992-07-10 | 1994-10-25 | Nec Corporation | Magneto-optical recording method and medium for recording three-value information |
JPH0636292A (ja) | 1992-07-20 | 1994-02-10 | Sony Corp | 光学ピックアップ駆動装置 |
EP0782133B1 (en) | 1992-08-04 | 1998-09-09 | Sony Corporation | Reproducing apparatus |
US5506830A (en) | 1992-08-14 | 1996-04-09 | Sony Corporation | Disk player |
JPH06111334A (ja) | 1992-09-24 | 1994-04-22 | Sony Corp | 円盤状記録媒体用の記録及び/又は再生装置、光検出器及び光ヘッド |
US5325247A (en) | 1992-11-12 | 1994-06-28 | Quantum Corporation | Digital multi-rate notch filter for sampled servo digital control system |
JPH06176426A (ja) | 1992-12-08 | 1994-06-24 | Sony Corp | 光学ピックアップ装置 |
US5418762A (en) | 1992-12-09 | 1995-05-23 | Sony Corporation | Optical disk recording device having a pre-recording mode |
WO1994015331A1 (en) | 1992-12-18 | 1994-07-07 | Lockhart Wayne C | Portable low profile information storage system |
JP3364969B2 (ja) | 1992-12-18 | 2003-01-08 | ソニー株式会社 | 光磁気ディスクドライブ装置 |
KR960013486B1 (ko) | 1992-12-23 | 1996-10-05 | 현대전자산업 주식회사 | 광헤드 장치 및 이를 이용한 위치설정 시간 측정방법 |
JP3461017B2 (ja) | 1993-10-29 | 2003-10-27 | 株式会社ケンウッド | 光ディスク装置のスピンドル制御回路 |
JPH06282849A (ja) | 1993-01-29 | 1994-10-07 | Sony Corp | 光記録媒体、光記録媒体の記録再生装置及び再生装置 |
JPH06231477A (ja) | 1993-02-05 | 1994-08-19 | Sony Corp | フォーカスサーボ回路 |
JPH06251371A (ja) | 1993-02-26 | 1994-09-09 | Sony Corp | ディスク状媒体の欠陥位置指示信号記録装置 |
JPH06259927A (ja) | 1993-03-09 | 1994-09-16 | Sony Corp | ディスク収納筐体 |
JP3208751B2 (ja) | 1993-03-23 | 2001-09-17 | ソニー株式会社 | 光学ピックアップ |
JPH06274901A (ja) | 1993-03-24 | 1994-09-30 | Toshiba Corp | 情報処理装置 |
US5361175A (en) | 1993-03-31 | 1994-11-01 | Hwelett-Packard Company | Calibration of circuitry for media verification in a magnetic data recording device |
US5486437A (en) | 1993-04-08 | 1996-01-23 | Sony Corporation | Optical recording method |
JP3240016B2 (ja) | 1993-05-11 | 2001-12-17 | ソニー株式会社 | 光デイスク装置及び光デイスク装置の評価方法 |
JP3453843B2 (ja) | 1993-06-08 | 2003-10-06 | ソニー株式会社 | ディスク装置 |
JPH0714171A (ja) | 1993-06-28 | 1995-01-17 | Sony Corp | 情報記録媒体およびその再生装置 |
JPH0721761A (ja) | 1993-06-30 | 1995-01-24 | Hitachi Ltd | 情報記録再生装置 |
US5517481A (en) | 1993-07-02 | 1996-05-14 | Sony Corporation | Optical recording and reproducing apparatus wherein data is recorded by stepwise shifting the edge position of each pit |
JPH0729234A (ja) | 1993-07-07 | 1995-01-31 | Sony Corp | 光磁気記録再生装置 |
JPH0745002A (ja) | 1993-07-27 | 1995-02-14 | Sony Corp | 再生装置及び記録再生装置 |
JP3541893B2 (ja) | 1993-08-06 | 2004-07-14 | ソニー株式会社 | 光磁気記録媒体再生装置 |
JP3567472B2 (ja) | 1993-09-29 | 2004-09-22 | ソニー株式会社 | 光磁気記録装置 |
US5493547A (en) | 1993-09-30 | 1996-02-20 | Sony Corporation | Recording eight digital audio channels on a single magneto optical disk |
US5459624A (en) | 1993-10-26 | 1995-10-17 | International Business Machines Corporation | Activator control method and apparatus for positioning a transducer using a phase plane trajectory trough function for a direct access storage device with estimated velocity and position states |
JPH07153093A (ja) | 1993-11-25 | 1995-06-16 | Sony Corp | 光再生信号処理回路 |
JP3319481B2 (ja) | 1993-12-22 | 2002-09-03 | ソニー株式会社 | 対物レンズ駆動装置及びこれを利用した光ディスク装置 |
JP3326946B2 (ja) | 1994-01-10 | 2002-09-24 | ソニー株式会社 | 光ディスク再生装置及び光ディスク再生方法 |
US6091684A (en) | 1995-01-25 | 2000-07-18 | Discovision Associates | Optical disc system and method for changing the rotational rate of an information storage medium |
US5576909A (en) * | 1995-02-16 | 1996-11-19 | Ministor Peripherals International Limited | Method for positioning a data transducer head in a rotating disk drive data storage device |
KR0156861B1 (ko) | 1995-11-27 | 1998-12-15 | 김광호 | 하드디스크 드라이브에 있어서 서보제어 이득 자동 보상방법 |
-
1995
- 1995-04-11 US US08/420,899 patent/US5677899A/en not_active Expired - Lifetime
- 1995-06-07 US US08/485,070 patent/US6741529B1/en not_active Expired - Fee Related
-
1996
- 1996-01-24 NO NO960283A patent/NO960283L/no not_active Application Discontinuation
- 1996-01-24 RU RU96101813/28A patent/RU2181217C2/ru active
- 1996-01-24 AU AU42124/96A patent/AU699610B2/en not_active Ceased
- 1996-01-24 DK DK007596A patent/DK7596A/da not_active Application Discontinuation
- 1996-01-25 EP EP99201549A patent/EP0971343A2/en not_active Withdrawn
- 1996-01-25 SG SG1996000443A patent/SG42460A1/en unknown
- 1996-01-25 JP JP8034460A patent/JPH08273169A/ja active Pending
- 1996-01-25 IL IL11689296A patent/IL116892A0/xx unknown
- 1996-01-25 BR BR9600223A patent/BR9600223A/pt unknown
- 1996-01-25 EP EP96300540A patent/EP0724255A1/en not_active Ceased
- 1996-01-25 KR KR1019960001589A patent/KR100297263B1/ko not_active IP Right Cessation
- 1996-04-26 ID IDP991062D patent/ID23814A/id unknown
-
1998
- 1998-07-16 US US09/116,346 patent/US5974007A/en not_active Expired - Lifetime
- 1998-12-10 JP JP10378591A patent/JPH11273096A/ja active Pending
-
2001
- 2001-11-23 RU RU2001131705/28A patent/RU2001131705A/ru not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
KR100297263B1 (ko) | 2001-10-24 |
KR960030122A (ko) | 1996-08-17 |
EP0724255A1 (en) | 1996-07-31 |
JPH11273096A (ja) | 1999-10-08 |
AU4212496A (en) | 1996-08-01 |
RU2001131705A (ru) | 2003-08-20 |
JPH08273169A (ja) | 1996-10-18 |
IL116892A0 (en) | 1996-07-23 |
ID23814A (id) | 1997-01-02 |
SG42460A1 (en) | 1997-08-15 |
US5677899A (en) | 1997-10-14 |
NO960283L (no) | 1996-07-26 |
US6741529B1 (en) | 2004-05-25 |
EP0971343A2 (en) | 2000-01-12 |
AU699610B2 (en) | 1998-12-10 |
RU2181217C2 (ru) | 2002-04-10 |
BR9600223A (pt) | 1998-01-06 |
NO960283D0 (no) | 1996-01-24 |
US5974007A (en) | 1999-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DK7596A (da) | Læse-/skrive-positionsstyring for diskdrev | |
KR970703014A (ko) | 디스크 드라이브 데이타경로 보전 제어구조(disk drive data path integrity control architecture) | |
DE69613096D1 (de) | Lese-/schreib- verhinderungsschema für eine plattendiskette und -einheit | |
DE69616645D1 (de) | Magnetresistiver Bandlese-/Schreibkopf | |
DE69424605D1 (de) | Plattenaufzeichnungs-/wiedergabevorrichtung | |
DE69626724D1 (de) | Datenaufzeichnungsmedien | |
DE19882608T1 (de) | Plattenlaufwerk mit Servoinformation mit konstanter Dichte | |
DE69634456D1 (de) | Optische Plattenaufzeichnungs/wiedergabevorrichtung | |
DE69622914D1 (de) | Kopfbetätigungsorgan für Plattenantriebssystem | |
DE69429602D1 (de) | Informationsaufzeichnungsmedium | |
DE69421748D1 (de) | Plattenaufzeichnungs-/wiedergabesystem | |
DE69612778D1 (de) | Integrierten Datenaufzeichnungsplatte und Plattenantrieb | |
DE69524176D1 (de) | Optisches Informationsaufzeichnungs-/-wiedergabegerät | |
DE69327773D1 (de) | Plattenantriebsteuersystem | |
DE69625211D1 (de) | Plattenantrieb | |
SG89374A1 (en) | Read/write control system for a disk drive | |
DE69427658D1 (de) | Informations-Aufzeichnungs-/Wiedergabevorrichtung | |
DE69421029D1 (de) | Plattenaufzeichnungsgerät | |
DE69821277D1 (de) | Aufzeichnungssteueranordnung für optische Platte | |
DE69522523D1 (de) | Plattenaufzeichnungs-/-wiedergabevorrichtung | |
DE69124417D1 (de) | Informationsaufzeichnungs-/-wiedergabegerät | |
DE19680559T1 (de) | Magnetaufzeichnungs-/Magnetwiedergabeeinrichtung | |
NO974467D0 (no) | Magnetiske opptaksmedier | |
KR970010926U (ko) | 하드 디스크 드라이브용 액츄에이터 어셈블리 | |
KR960024927U (ko) | 디스크 드라이브용 턴테이블 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AHB | Application shelved due to non-payment |