ClassID:

198085

G11B7/0945 - page 2 - CPC Classification

Classification description:

Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor; 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 Methods for initialising servos, start-up sequences

Recent Application in this class:
#301
20070189133
2007-08-16

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

#302
20070183278
2007-08-09

OPTICAL DISC DRIVE, METHOD OF MOVING BEAM SPOT AND COMPUTER-EXECUTABLE PROGRAM IMPLEMENTABLE BY THE OPTICAL DISC DRIVE

#303
20070183275
2007-08-09

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

#304
20070171783
2007-07-26

Servo position adjustment method and servo position adjustment device

#305
20070171780
2007-07-26

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

#306
20070165501
2007-07-19

Recording medium, recording apparatus, and reading apparatus

#307
20070159936
2007-07-12

Optical head unit and optical disc apparatus

#308
20070153660
2007-07-05

METHOD AND SYSTEM FOR GENERATING LENGTH DEVIATION STATISTICS, AND METHOD AND SYSTEM FOR TUNING CONTROL PARAMETER OF OPTICAL STORAGE DEVICE USING THE SAME

#309
20070153646
2007-07-05

Optical Recording Apparatus With Drawing Capability of Visible Image on Disk Face

#310
20070133376
2007-06-14

Read apparatus and a method of detecting deterioration of a disk

#311
20070127330
2007-06-07

Method of focus error signal adjustment in optical disk device and optical disk drive

#312
20070121461
2007-05-31

Recording/reproduction method and recording/reproduction apparatus

#313
20070121439
2007-05-31

Optical disc drive and method for controlling the position of a lens

#314
20070121429
2007-05-31

Optical disc and optical disc device

#315
20070115792
2007-05-24

Differential push-pull gain controlling method and apparatus to reduce the effects of rotational eccentricity

#316
20070109928
2007-05-17

Optical disk apparatus controlling focus and tracking drive in gap and recorded area when adjusting write power

#317
20070104062
2007-05-10

Method and apparatus for reproducing information from recording medium

#318
20070104048
2007-05-10

Method for gain adjustment for production of a lens position signal, and a corresponding appliance for reading from and/or writing to an optical recording medium

#319
20070104047
2007-05-10

Optical disc drive and focus control method thereof

#320
20070097823
2007-05-03

Method of vertical deviation disc detection

#321
20070097809
2007-05-03

METHOD OF ADJUSTING SPHERICAL ABERRATION AND FOCUS OFFSET IN OPTICAL DISK APPARATUS AND OPTICAL DISK APPARATUS USING THE SAME

#322
20070091756
2007-04-26

METHOD AND APPARATUS OF CALIBRATING PARAMETERS UTILIZED FOR DETERMINING SERVO SIGNALS

#323
20070091755
2007-04-26

Disk drive appratus and method, recording medium, and program

#324
20070086291
2007-04-19

Focus pull-in control device and method thereof

#325
20070076553
2007-04-05

Apparatus for reading and/or writing optical recording media

#326
20070070851
2007-03-29

Method and device for controlling beginning point of optical pick-up unit

#327
20070064561
2007-03-22

Optical recording/playback apparatus and method for adjusting playback parameters thereof

#328
20070064554
2007-03-22

Optical disk drive and method of determining working distance

#329
20070064552
2007-03-22

Information recording and reproduction method and information recording and reproduction device

#330
20070058501
2007-03-15

Optical pickup utilizing nonvolatile memory and adjustment method

#331
20070053256
2007-03-08

Method and device for adjusting an amplification for producing a focus error signal

#332
20070047405
2007-03-01

Disc-driving apparatus and method for controlling the same

#333
20070045509
2007-03-01

Optical pickup, information processing apparatus and signal processing method

#334
20070041288
2007-02-22

METHODS AND APPARATUSES FOR ACCESSING A HYBRID DISC

#335
20070040093
2007-02-22

Control unit and optical disk drive including the control unit

#336
20070030779
2007-02-08

Optical disc having tracking polarity information, and apparatuses and methods for recording and reproducing user data on the same

#337
20070030772
2007-02-08

Optical disc apparatus

#338
20070025219
2007-02-01

Information playback apparatus and information playback method

#339
20070025201
2007-02-01

METHOD FOR DETERMINING A DRIVING FORCE TO DRIVE AN OPTICAL PICKUP HEAD

#340
20070014209
2007-01-18

Method and circuit for protecting optical pickup actuator

#341
20070014202
2007-01-18

Actuator calibration using a focus error signal

#342
20070008853
2007-01-11

Optical disc device, optical pickup control method and optical disc discriminating method

#343
20070002712
2007-01-04

Unbalanced disc detection and rotating speed control in disc reading apparatus

#344
20070002703
2007-01-04

Optical disk apparatus and method of adjusting the same

#345
20070002702
2007-01-04

ABERRATION CORRECTING METHOD

#346
20070001640
2007-01-04

Digital servo system with moving average filter

#347
20070001639
2007-01-04

Digital servo system with pre-processing old control states

#348
20060280104
2006-12-14

Demodulation of a focusing error signal during a focus search for a lens focusing control in an optical disc system

#349
20060280062
2006-12-14

Optical disc apparatus

#350
20060274627
2006-12-07

Optical disc device

#351
20060262681
2006-11-23

Optical disc recording device

#352
20060262678
2006-11-23

Focal control adjusting method and optical disk apparatus

#353
20060262675
2006-11-23

Radial runout detection method and device for an optical disk drive

#354
20060261243
2006-11-23

Optical reproducing apparatus capable of using laser diode of two wavelengths

#355
20060250914
2006-11-09

Method and device for measuring the tilt of an optical disc

#356
20060245314
2006-11-02

Recording disc and apparatus and method for reproducing recorded information

#357
20060239162
2006-10-26

Optical disc apparatus, method of adjusting focus offset for optical disc apparatus, and program for executing focus offset adjustment

#358
20060239160
2006-10-26

Method for determining kind of optical recording medium

#359
20060239159
2006-10-26

Optical disk apparatus with approximate focus control of laser beam

#360
20060239141
2006-10-26

Focus control for optical scanner

#361
20060239139
2006-10-26

Optical disk device and optical disk discriminating method

#362
20060233075
2006-10-19

METHODS OF CALIBRATING SERVO SIGNAL BIAS FOR OPTICAL DISC

#363
20060203690
2006-09-14

Recording and reproducing apparatus

#364
20060203628
2006-09-14

Optical pickup driving apparatus and optical pickup beam spot positioning method

#365
20060193237
2006-08-31

Optical recording apparatus with drawing capability of visible image on disk face

#366
20060193225
2006-08-31

Optical disc recording/reproducing apparatus

#367
20060187807
2006-08-24

Optical disc having focus offset area

#368
20060187777
2006-08-24

Optical disc apparatus

#369
20060176784
2006-08-10

Method for seeking target position on multi-layer disc

#370
20060171272
2006-08-03

Optical disc apparatus and defocus control method

#371
20060164949
2006-07-27

Optical pickup control apparatus, optical pickup control method, and optical disc apparatus

#372
20060158978
2006-07-20

Optical disk apparatus

#373
20060146663
2006-07-06

Calibration of a focus offset in an optical drive

#374
20060140073
2006-06-29

Method and apparatus for automatic adjustment procedure of the optical drive

#375
20060126460
2006-06-15

Optical storage device, recording method of optical storage medium and program

#376
20060120264
2006-06-08

Disk substrate and optical disk

#377
20060120258
2006-06-08

Optical disc, optical disc apparatus, optical disc reproducing method, and digital content publication

#378
20060120232
2006-06-08

Information recording medium and information recording device

#379
20060120230
2006-06-08

Writing control method of optical recording/reproducing apparatus

#380
20060114793
2006-06-01

Optical disk unit and aberration correcting method used for this

#381
20060109765
2006-05-25

Method for testing assembling quality of optical storage devices and optical storage device for using such method

#382
20060104170
2006-05-18

Method for performing servo control for blank discs

#383
20060100805
2006-05-11

Enhanced methods for electronic storage device calibrations

#384
20060092782
2006-05-04

Optical disk apparatus having servo parameter setting unit

#385
20060092781
2006-05-04

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

#386
20060092780
2006-05-04

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

#387
20060092779
2006-05-04

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

#388
20060092777
2006-05-04

Defocus detection device, defocus detection method and optical disk unit using the same

#389
20060083510
2006-04-20

Spherical aberration detection

#390
20060083123
2006-04-20

Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit

#391
20060077839
2006-04-13

Recording medium, recording apparatus, and reading apparatus

#392
20060077806
2006-04-13

Focus point calibration for optimum recording quality

#393
20060077804
2006-04-13

Disk device and control method for disk device

#394
20060077796
2006-04-13

Focus control device and method of adjusting focus gain prior to focus-servo operation

#395
20060072416
2006-04-06

Optical recording apparatus capable of optimizing write defocus and method thereof

#396
20060067177
2006-03-30

Tilt compensation method for optical recording/reproducing apparatus

#397
20060062098
2006-03-23

Optical pickup spherical aberration compensating method, optical pickup spherical aberration focus offset compensating method, and optical pickup device

#398
20060044980
2006-03-02

Recording/reproduction device, recording /reproduction method, recording/reproduction system, program thereof, and recording medium

#399
20060044973
2006-03-02

Optical disc center error amplitude calibration

#400
20060039259
2006-02-23

Method and apparatus for controlling a tilt between an optical axis of an optical pick-up head and an optical disc

#401
20060023579
2006-02-02

Optical disk drive with target focus control

#402
20060013082
2006-01-19

Method of controlling focus of optical disk recording and reproducing device

#403
20060002250
2006-01-05

Information recording apparatus and information recording medium

#404
20060002248
2006-01-05

Disc drive calibration with forced track traversing signal

#405
20050286357
2005-12-29

Optical recording/reproducing apparatus, medium, and method and controlling apparatus, medium, and method therefor

#406
20050281150
2005-12-22

Method for determining a compensation value for tracking error signal

#407
20050276184
2005-12-15

Optical disk, optical disk device, and method for setting optical disk device

#408
20050270924
2005-12-08

Device and method for controlling tilt servo

#409
20050270917
2005-12-08

Optical disc reading and reproducing apparatus

#410
20050270916
2005-12-08

Optical disc reading and reproducing apparatus

#411
20050259545
2005-11-24

Method and apparatus for controlling tilt in an optical disc device

#412
20050254362
2005-11-17

Disc reproduction device

#413
20050254360
2005-11-17

Focus control method for optical disk device

#414
20050254359
2005-11-17

Optical pickup

#415
20050249063
2005-11-10

Method of reactivating servo control system

#416
20050249059
2005-11-10

Module for improving optical disc readability via dynamically adjusting optical focus position and method for the same

#417
20050243673
2005-11-03

Device and method for controlling tilt servo

#418
20050237873
2005-10-27

Method for adjusting focus or tracking detection unit, and optical disc device

#419
20050232090
2005-10-20

Apparatus and setup method for reproducing information recorded in optical recording medium, and computer product

#420
20050226127
2005-10-13

Servo-controlling method of an optical disk apparatus

#421
20050226107
2005-10-13

Optical disc device

#422
20050213483
2005-09-29

Recording disc and apparatus and method for reproducing recorded information

#423
20050213467
2005-09-29

Optical recording medium, and recording/reading method and recording/reading apparatus for optical recording medium

#424
20050213443
2005-09-29

Method for generating gain-adjusted tracking error signal

#425
20050207293
2005-09-22

Recording medium and method for recording and reproducing data on and from the same

#426
20050201238
2005-09-15

Method and device for discriminating deflecting disc

#427
20050201228
2005-09-15

Method and apparatus for recording/reproducing information with respect to optical recording medium

#428
20050201225
2005-09-15

Optical disk drive capable of adjusting control information to recording layer

#429
20050195708
2005-09-08

High-speed focus pull-in controllers for adaptively responding to disk surface vibration of an optical disk device and focus control methods thereof

#430
20050195707
2005-09-08

Method of recording and reproducing an optical recording medium

#431
20050190687
2005-09-01

Recording medium, recording apparatus, and reading apparatus

#432
20050179969
2005-08-18

Holographic recording apparatus

#433
20050169142
2005-08-04

Recording medium, recording apparatus, and reading apparatus

#434
20050163035
2005-07-28

Recording medium, recording apparatus, and reading apparatus

#435
20050163034
2005-07-28

Recording medium, recording apparatus, and reading apparatus

#436
20050163003
2005-07-28

Recording medium, recording apparatus, and reading apparatus

#437
20050162999
2005-07-28

Optical storage system and control method

#438
20050162998
2005-07-28

Optical disk apparatus which changes a tilt value of an objective lens and method of recording with such optical disk apparatus

#439
20050152246
2005-07-14

Method for detecting eccentricity of an optical disc, and optical disc drive that performs the method

#440
20050141363
2005-06-30

Optical disc apparatus, an optical disc method, and a semiconductor integrated circuit capable of adjusting a focus position of a light beam and a spherical aberration

#441
20050128916
2005-06-16

Recording and/or reproducing apparatus and method with a signal quality determining device and method

#442
20050117476
2005-06-02

Information-processing apparatus and information administration system using the same

#443
20050117474
2005-06-02

Tracking learning/adjusting method and optical disk device

#444
20050117471
2005-06-02

Optical disc device

#445
20050117470
2005-06-02

Optical disk drive, information reproducing method and information storage medium

#446
20050111281
2005-05-26

Control apparatus, control method, access apparatus, access method, program, and write-once recording medium

#447
20050105411
2005-05-19

Tracking gain control method and tracking control circuit

#448
20050099903
2005-05-12

Optical disc drive with a system behavior detection module

#449
20050094506
2005-05-05

Recording and reproducing method, recording and reproducing device and semiconductor circuit

#450
20050088932
2005-04-28

Optical disk apparatus

#451
20050088930
2005-04-28

Disc apparatus for reproducing a signal on a disc using a laser beam

#452
20050083798
2005-04-21

Optical disc drive

#453
20050068873
2005-03-31

Optical disc identification apparatus and method

#454
20050068872
2005-03-31

Apparatus and method for detecting optical disc type and/or adjusting track balance

#455
20050063287
2005-03-24

Optical disk reproducing apparatus, and offset adjustment method

#456
20050063262
2005-03-24

Skew control method and skew control unit

#457
20050063259
2005-03-24

Optical information recording apparatus

#458
20050058039
2005-03-17

Multi-standard optical disk and method and apparatus of reading from and recording to the disk

#459
20050058030
2005-03-17

Optical disk drive focusing apparatus using sum signal

#460
20050052966
2005-03-10

Optical-disc driving apparatus, optical-disc driving method, storage medium, and program

#461
20050052960
2005-03-10

Method and apparatus to generate tracking error signal, optical storage drive using the same, and lead-in control method for the optical storage drive

#462
20050047300
2005-03-03

Disc discriminating method and information reproducing apparatus using thereof

#463
20050041541
2005-02-24

Optical pickup device and apparatus for reading data from optical storage medium

#464
20050041537
2005-02-24

Record/playback apparatus and record/playback method

#465
20050036420
2005-02-17

Method for calibrating tilt control values of a pickup head in real time

#466
20050036410
2005-02-17

Method and related apparatus for diagnosing crosstalk within an optical pick-up unit by utilizing firmware

#467
20050030848
2005-02-10

Method for obtaining an optimum focusing point of an optical pickup unit and a servo system of an optical disk drive using this method

#468
20050030845
2005-02-10

Focus control method of optical pick-up system and apparatus thereof

#469
20050025275
2005-02-03

Apparatus of phase-frequency detector

#470
20050025016
2005-02-03

Tilt detection system, tilt detection method and tilt adjustment method

#471
20050024999
2005-02-03

Method and related optical disk accessing apparatus for calibrating optical disk tilt servo system according to non-constant relation between locations and tilt angles of optical disk

#472
20050018801
2005-01-27

Wobble clock generator and driving method thereof

#473
20050018800
2005-01-27

Apparatus of adjusting wobble clock

#474
20050018764
2005-01-27

Method of determining ADIP information through counting identical bits and different bits

#475
20050018579
2005-01-27

Data slicer of dynamically adjusting slice level

#476
20050018562
2005-01-27

Method and related apparatus for evaluating beta-parameter according to write-in result of portion of write-in data with specific content while performing optimal power control of optical disk drive

#477
20050018559
2005-01-27

Focus-balance calibration method

#478
20050018558
2005-01-27

Method for adjusting focus bias in optical disk device

#479
20050018549
2005-01-27

Method and related apparatus for evaluating beta-parameter according to results of read data sliced with different slicing levels while performing optimal power control of optical disk drive

#480
20050017772
2005-01-27

Method and related apparatus for decoding information carried by wobble signals

#481
20050007902
2005-01-13

Optical disk reproducing device

#482
20050007720
2005-01-13

Apparatus and method for generating wobble clock

#483
20050006558
2005-01-13

Method of vertical deviation disc detection

#484
20050002286
2005-01-06

Optical disk apparatus and optical disk processing method