DE69630790D1 - Optisches Plattensystem mit Stromüberwachungsschaltung mit Lasertreibersteuerungseinheit, und Verfahren zu deren Betrieb - Google Patents

Optisches Plattensystem mit Stromüberwachungsschaltung mit Lasertreibersteuerungseinheit, und Verfahren zu deren Betrieb

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Publication number
DE69630790D1
DE69630790D1 DE69630790T DE69630790T DE69630790D1 DE 69630790 D1 DE69630790 D1 DE 69630790D1 DE 69630790 T DE69630790 T DE 69630790T DE 69630790 T DE69630790 T DE 69630790T DE 69630790 D1 DE69630790 D1 DE 69630790D1
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DE
Germany
Prior art keywords
medium
objective lens
data
electronic means
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69630790T
Other languages
English (en)
Other versions
DE69630790T2 (de
Inventor
Randolph Scott Crupper
Marvin Benjamin Davis
Kurt Walter Getreuer
Leonardus Johannes Grassens
David Earl Lewis
David Louis Schell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Discovision Associates
Original Assignee
Discovision Associates
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Publication date
Application filed by Discovision Associates filed Critical Discovision Associates
Publication of DE69630790D1 publication Critical patent/DE69630790D1/de
Application granted granted Critical
Publication of DE69630790T2 publication Critical patent/DE69630790T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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    • G11B7/125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
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    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1356Double or multiple prisms, i.e. having two or more prisms in cooperation
    • HELECTRICITY
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    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K41/00Propulsion 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
    • H02K41/02Linear motors; Sectional motors
    • H02K41/035DC motors; Unipolar motors
    • H02K41/0352Unipolar motors
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    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/10009Improvement or modification of read or write signals
    • G11B20/10037A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
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    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/10009Improvement or modification of read or write signals
    • G11B20/10222Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
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    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/12Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1258Formatting, 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/14Digital recording or reproducing using self-clocking codes
    • GPHYSICS
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    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0908Disposition 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
    • G11B7/0917Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
    • G11B2007/0919Critical angle methods
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B2020/10916Seeking data on the record carrier for preparing an access to a specific address
    • GPHYSICS
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    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/12Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1281Servo information
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/14Digital recording or reproducing using self-clocking codes
    • G11B20/1403Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B2020/1484Codewords used in servo patterns
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045Recording
    • G11B7/00456Recording strategies, e.g. pulse sequences
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/007Arrangement 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
    • G11B7/00745Sectoring or header formats within a track
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0901Disposition 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K41/00Propulsion 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
    • H02K41/02Linear motors; Sectional motors
    • H02K41/035DC motors; Unipolar motors
    • H02K41/0352Unipolar motors
    • H02K41/0354Lorentz force motors, e.g. voice coil motors
    • H02K41/0356Lorentz force motors, e.g. voice coil motors moving along a straight path
DE69630790T 1995-01-25 1996-01-18 Optisches Plattensystem mit Stromüberwachungsschaltung mit Lasertreibersteuerungseinheit, und Verfahren zu deren Betrieb Expired - Lifetime DE69630790T2 (de)

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
US376882 1995-01-25

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DE69630790D1 true DE69630790D1 (de) 2003-12-24
DE69630790T2 DE69630790T2 (de) 2004-08-19

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DE69630782T Expired - Lifetime DE69630782T2 (de) 1995-01-25 1996-01-18 Servoregelkreis einer Informationsspeichereinrichtung
DE69627232T Expired - Lifetime DE69627232T2 (de) 1995-01-25 1996-01-18 Optische Platteneinrichtung
DE69630783T Expired - Lifetime DE69630783T2 (de) 1995-01-25 1996-01-18 Colpittsoszillator mit reduzierten Schwingungen und Verwendung desselben in einem optischen Plattensystem
DE69630790T Expired - Lifetime DE69630790T2 (de) 1995-01-25 1996-01-18 Optisches Plattensystem mit Stromüberwachungsschaltung mit Lasertreibersteuerungseinheit, und Verfahren zu deren Betrieb
DE69630534T Expired - Lifetime DE69630534T2 (de) 1995-01-25 1996-01-18 Verfahren zur Änderung der Drehgeschwindigkeit eines Speicherträgers von einer Anfangsgeschwindigkeit auf eine gewünschte Geschwindigkeit
DE69630522T Expired - Lifetime DE69630522T2 (de) 1995-01-25 1996-01-18 Optisches Plattensystem mit Servomotor und Servofehlerdetektionsanordnung unter Verwendung eines überwachenden Quad Sum Signals

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DE69630782T Expired - Lifetime DE69630782T2 (de) 1995-01-25 1996-01-18 Servoregelkreis einer Informationsspeichereinrichtung
DE69627232T Expired - Lifetime DE69627232T2 (de) 1995-01-25 1996-01-18 Optische Platteneinrichtung
DE69630783T Expired - Lifetime DE69630783T2 (de) 1995-01-25 1996-01-18 Colpittsoszillator mit reduzierten Schwingungen und Verwendung desselben in einem optischen Plattensystem

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DE69630534T Expired - Lifetime DE69630534T2 (de) 1995-01-25 1996-01-18 Verfahren zur Änderung der Drehgeschwindigkeit eines Speicherträgers von einer Anfangsgeschwindigkeit auf eine gewünschte Geschwindigkeit
DE69630522T Expired - Lifetime DE69630522T2 (de) 1995-01-25 1996-01-18 Optisches Plattensystem mit Servomotor und Servofehlerdetektionsanordnung unter Verwendung eines überwachenden Quad Sum Signals

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US (14) US5729511A (de)
EP (14) EP0838811A3 (de)
JP (7) JPH08293121A (de)
KR (12) KR960030132A (de)
CN (13) CN1243348C (de)
AT (6) ATE253251T1 (de)
AU (1) AU716195B2 (de)
BR (1) BR9600141A (de)
CA (1) CA2167549A1 (de)
DE (6) DE69630782T2 (de)
DK (1) DK4696A (de)
ID (4) ID26670A (de)
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NO (1) NO960220L (de)
PT (2) PT840309E (de)
SG (18) SG91802A1 (de)
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