Patents-Review.com
ClassID:

198063 ⎘

G11B7/0909 - 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 for focusing only by astigmatic methods

Recent Application in this class:
#1
20200110277
2020-04-09

Diffractive optical element, projection device and measuring device

 #2
20160171997
2016-06-16

Recording/reproducing apparatus

 #3
20150023143
2015-01-22

Optical disc device and focus jump method

 #4
20130229898
2013-09-05

Optical pickup device and optical disc apparatus for recording and reproducing information on and from optical disc including plurality of recording layers

 #5
20130107693
2013-05-02

Optical pickup apparatus

 #6
20130083643
2013-04-04

OPTICAL PICKUP APPARATUS

 #7
20130010584
2013-01-10

Optical head and optical information device

 #8
20130003516
2013-01-03

Optical pickup device

 #9
20120314557
2012-12-13

Optical pickup device

 #10
20120243391
2012-09-27

Optical disc device

 #11
20120218874
2012-08-30

Optical head using beam dividing element

 #12
20120069726
2012-03-22

Optical storage focus servo system and method of controlling same

 #13
20110170398
2011-07-14

Optical head device, optical information device, computer, disc player, car navigation system, optical disc recorder, and vehicle

 #14
20110128832
2011-06-02

Optical head device and optical disc apparatus

 #15
20110103209
2011-05-05

Drive device and method for controlling the same

 #16
20110075545
2011-03-31

Optical pickup device

 #17
20110069597
2011-03-24

OPTICAL HEAD APPARATUS, HOLOGRAPHIC OPTICAL DEVICE, OPTICAL INTEGRATED DEVICE, OPTICAL INFORMATION PROCESSING APPARATUS, AND SIGNAL DETECTION METHOD

 #18
20110063967
2011-03-17

OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS USING THE SAME

 #19
20110026389
2011-02-03

Optical pickup device and optical disc device

 #20
20110019524
2011-01-27

Optical head and optical information device

 #21
20100265810
2010-10-21

Optical pickup device and optical disc device

 #22
20100265809
2010-10-21

Optical pickup device

 #23
20100238783
2010-09-23

OPTICAL PICKUP

 #24
20100214903
2010-08-26

Extraction optical system and optical head device including the same

 #25
20100177619
2010-07-15

Pickup device

 #26
20100103799
2010-04-29

Optical head device and optical recording and reading system

 #27
20100080105
2010-04-01

Optical pickup device and optical disk driver using the same

 #28
20100074066
2010-03-25

SERVO SYSTEM OF OPTICAL DISC AND RELATED SERVO METHOD

 #29
20100027405
2010-02-04

Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus

 #30
20100027404
2010-02-04

Optical pickup apparatus and focal-point adjusting method

 #31
20100027386
2010-02-04

Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus

 #32
20090296562
2009-12-03

PHOTOELECTRIC CONVERTING DEVICE, AND OPTICAL DISK APPARATUS AND ADJUSTMENT METHOD OF THE SAME

 #33
20090279409
2009-11-12

OPTIMAL DETECTION OF TWODOS SIGNALS

 #34
20090274031
2009-11-05

Optical pickup and information device for reducing an influence of stray light in an information recording medium

 #35
20090262634
2009-10-22

Focus optical system and optical disc master exposure apparatus

 #36
20090252019
2009-10-08

MICRO OPTICAL PICKUP APPARATUS

 #37
20090245075
2009-10-01

Optical head device, optical information device, computer, disc player, car navigation system, optical disc recorder, and vehicle

 #38
20090225645
2009-09-10

Optical pickup apparatus and focal-point adjusting method

 #39
20090201787
2009-08-13

Pickup device

 #40
20090175149
2009-07-09

HOLOGRAPHIC INFORMATION RECORDING AND/OR REPRODUCING APPARATUS

 #41
20090154323
2009-06-18

Optical pickup device and optical disc device

 #42
20090154306
2009-06-18

OPTIMIZING FOCUS CROSSTALK CANCELLING

 #43
20090141325
2009-06-04

Hologram Device and Recording Method

 #44
20090115921
2009-05-07

Optical recording and reproducing apparatus having an optical pickup including a liquid crystal correcting element

 #45
20090067315
2009-03-12

MULTI-CHANNEL OPTICAL RECORDING AND/OR REPRODUCING APPARATUS AND METHOD OF CONTROLLING THE SAME

 #46
20090040910
2009-02-12

Optical pickup device and optical disk device

 #47
20090040894
2009-02-12

Optical head and data processing apparatus including the same

 #48
20090040893
2009-02-12

Optical pickup device and optical disk device

 #49
20090034392
2009-02-05

Photodetector and optical pickup apparatus including the same

 #50
20080279069
2008-11-13

Optical disk apparatus with approximate focus control of laser beam

 #51
20080267020
2008-10-30

OPTICAL DISC APPARATUS AND FOCUS CONTROL METHOD

 #52
20080267019
2008-10-30

Optical Pickup Apparatus and Optical Disk Drive

 #53
20080232217
2008-09-25

METHOD AND OPTICAL DISC DRIVE FOR ACCESSING DATA ON OPTICAL STORAGE MEDIUM

 #54
20080186831
2008-08-07

Optical Scanning Device

 #55
20080175130
2008-07-24

Optical disc apparatus

 #56
20080175116
2008-07-24

Optical disc apparatus and method for determining information recording layer in optical disc

 #57
20080175107
2008-07-24

FOCUSING CONTROL METHOD FOR READING/WRITING OPTICAL DISC

 #58
20080165655
2008-07-10

Optical pickup device

 #59
20080158571
2008-07-03

Photodetector and optical pickup apparatus

 #60
20080137495
2008-06-12

Optical device and optical disc apparatus utilizing the optical device

 #61
20080117783
2008-05-22

Optical disc apparatus and focus control method

 #62
20080117724
2008-05-22

OPTICAL PICKUP AND OPTICAL DISC DEVICE EMPLOYING THE SAME

 #63
20080101199
2008-05-01

Optical head and optical disc device

 #64
20080089209
2008-04-17

Optical disc apparatus, focus position control method and optical disc

 #65
20080068959
2008-03-20

Optical disc drive and method of controlling focal position

 #66
20080062852
2008-03-13

Multi-Dimensional Optical Scanner

 #67
20080062827
2008-03-13

Optical pickup device and optical disk drive

 #68
20080062435
2008-03-13

Optical head device

 #69
20080043581
2008-02-21

Optical disc apparatus and focusing method for the same

 #70
20080008057
2008-01-10

OPTICAL DISC APPARATUS AND INFORMATION RECORDING/REPRODUCING METHOD OF THE SAME

 #71
20070291622
2007-12-20

HIGH PASS FILTERING DEVICE FOR AN OPTICAL DISC DRIVE

 #72
20070291620
2007-12-20

Power control system and related method

 #73
20070291613
2007-12-20

Signal processing apparatus and method for an optical disc drive

 #74
20070274167
2007-11-29

Focus out detecting apparatus and optical disc apparatus using the same

 #75
20070237039
2007-10-11

Optical disc drive having a mechanism to reduce the noise level of a focus error signal

 #76
20070195662
2007-08-23

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

 #77
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

 #78
20070189130
2007-08-16

Optical information device and information recording and reproduction device

 #79
20070183279
2007-08-09

APPARATUS FOR OPTICALLY RECORDING AND REPRODUCING INFORMATION

 #80
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

 #81
20070177484
2007-08-02

Optical pickup device capable of loosening assembly accuracy

 #82
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

 #83
20070109946
2007-05-17

Optical pickup device

 #84
20070051870
2007-03-08

Optical pickup apparatus and information recording and reproducing apparatus

 #85
20070041304
2007-02-22

Optical disc drive

 #86
20070035801
2007-02-15

Light receiving element circuit and optical disk device

 #87
20070025205
2007-02-01

Optical pickup and optical recording and/or reproducing apparatus employing the same

 #88
20060278807
2006-12-14

Optical disk apparatus and pickup unit

 #89
20060239159
2006-10-26

Optical disk apparatus with approximate focus control of laser beam

 #90
20060221798
2006-10-05

Optical disk device and adjusting method therefor

 #91
20060209647
2006-09-21

Photo diode ic

 #92
20060209643
2006-09-21

Optical scanning device

 #93
20060158992
2006-07-20

Optical recording device

 #94
20060153024
2006-07-13

Layer-jumping and focusing control method

 #95
20060120248
2006-06-08

Diffraction element and optical pick-up apparatus having the same

 #96
20060109772
2006-05-25

Optical pick-up apparatus and method for multi-optical disk type recording/reproducing

 #97
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

 #98
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

 #99
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

 #100
20060083147
2006-04-20

Optical pickup device

 #101
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

 #102
20060028932
2006-02-09

Optical pickup device

 #103
20050254359
2005-11-17

Optical pickup

 #104
20050213222
2005-09-29

Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus

 #105
20050174619
2005-08-11

Holographic optical element, position shift detecting apparatus, optical pickup apparatus, optical recording medium drive and method of fabricating holographic optical element

 #106
20050162995
2005-07-28

Optical pickup device, optical disk drive, optical device and composite optical element

 #107
20050157611
2005-07-21

Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus

 #108
20050128896
2005-06-16

Optical head device and optical information recording/reproducing apparatus

 #109
20050116137
2005-06-02

Optical pick-up device for recording/reading information on optical recording medium

 #110
20050088951
2005-04-28

Optical pickup device and optical disk device and optical device and composite optical element

 #111
20050047287
2005-03-03

Focus control

 #112
20050047286
2005-03-03

Focus error signal generation

 #113
20050035269
2005-02-17

Optical pickup device

 #114
20050018317
2005-01-27

Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus

 #115
20050001141
2005-01-06

Optical scanning device