ClassID:

198011

G11B7/0052 - 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; Recording, reproducing or erasing methods; Read, write or erase circuits therefor; Reproducing involving reflectivity, absorption or colour changes

Recent Application in this class:
#1
20250342857
2025-11-06

OPTICAL INFORMATION STORAGE MEDIUM

#2
20240363144
2024-10-31

COMPOUND, OPTICAL ABSORBING MATERIAL, NON-LINEAR OPTICAL ABSORBING MATERIAL, RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION READING METHOD

#3
20240265941
2024-08-08

IMPROVEMENTS IN OPTICAL DATA STORAGE

#4
20240055020
2024-02-15

OPTICAL STORAGE MEDIUM

#5
20220415351
2022-12-29

Optical storage medium

#6
20220068306
2022-03-03

OPTICAL INFORMATION STORAGE MEDIUM

#7
20190214048
2019-07-11

Optical information storage medium

#8
20190130941
2019-05-02

Reproducing device

#9
20180286454
2018-10-04

High density optical disk processing apparatus, method, and computer-readable medium

#10
20180240498
2018-08-23

Reproducing device

#11
20180018998
2018-01-18

Reproducing device

#12
20170186462
2017-06-29

Reproducing device

#13
20170084301
2017-03-23

Optical information recording medium having first and second pit row of identical reflectance

#14
20160336035
2016-11-17

Optical information storage medium

#15
20160155469
2016-06-02

Reproducing device

#16
20140219072
2014-08-07

Optical information storage medium

#17
20140092718
2014-04-03

Method of writing to an optical data storage medium, method of reading from an optical data storage medium, and optical data storage medium

#18
20110212287
2011-09-01

STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD

#19
20110096654
2011-04-28

Compatible optical recording medium

#20
20110038025
2011-02-17

Circularly polarized light-emitting nanoparticle

#21
20100266804
2010-10-21

Recordable optical storage medium comprising a semiconductor layer, and respective manufacturing method

#22
20100232279
2010-09-16

Optical retrieval system, data storage system, data storage medium and method of optical retrieval and data storage

#23
20100149948
2010-06-17

Method and system for reading high density optical information

#24
20100135141
2010-06-03

INFORMATION RECORDING MEDIUM AND METHOD FOR REPRODUCING THE INFORMATION FROM THE SAME

#25
20090310464
2009-12-17

THREE-DIMENSIONAL OPTICAL INFORMATION CARRIER

#26
20090129232
2009-05-21

Storage medium, reproducing method, and recording method

#27
20080205251
2008-08-28

Method and System For Data Recording and Reading in Multi-Photon Excitable Media

#28
20080181065
2008-07-31

PLAYBACK SIGNAL DISTORTION COMPENSATION METHOD AND OPTICAL DISK PLAYBACK METHOD

#29
20080165668
2008-07-10

RECORDING MEDIUM AND INFORMATION RECORDING AND REPRODUCING METHOD USING THE SAME

#30
20080165634
2008-07-10

Enhanced data storage and retrieval devices and systems and methods for utilizing the same

#31
20080094990
2008-04-24

COMBINED FLUORESCENT-REFLECTIVE MEDIA AND MEDIA READING DEVICE

#32
20070237062
2007-10-11

Phase-change type optical recording medium and reproduction method and apparatus for such a recording medium

#33
20070147213
2007-06-28

Optical information carrier containing bragg reflectors

#34
20070121475
2007-05-31

Method and system for controlling the level of a data signal read from an optical disc

#35
20070090861
2007-04-26

Optical flip-flop based read-out arrangement

#36
20070055453
2007-03-08

Methods for electronic fluorescent perturbation for analysis and electronic perturbation catalysis for synthesis

#37
20070053266
2007-03-08

Device and method for reading multilayer optical disk

#38
20070030776
2007-02-08

Super-resolution information recording medium, recording/reproducing apparatus, and recording/reproducing method

#39
20060274633
2006-12-07

Multi-stack information carrier

#40
20060262711
2006-11-23

Optical information recording medium, and information recording method and information reproducing method using the same

#41
20060221803
2006-10-05

Hybrid disk and method of writing data to and/or reading data from the hybrid disk

#42
20060216740
2006-09-28

Methods for the electronic, homogeneous assembly and fabrication of devices

#43
20060210925
2006-09-21

Storage medium, reproducing method, and recording method

#44
20060203701
2006-09-14

Multilayer optical disc having disc information

#45
20060194151
2006-08-31

Recording medium and information recording and reproducing method using the same

#46
20060188818
2006-08-24

Storage medium, reproducing method, and recording method

#47
20060187783
2006-08-24

Method for controlling data read speed of optical disc

#48
20060182009
2006-08-17

Data erase method for rewritable phase change type recording medium

#49
20060153056
2006-07-13

Limited life optical media

#50
20060118783
2006-06-08

Structure for optical device and method of fabricating the same

#51
20060050620
2006-03-09

Optical scanning device

#52
20050237912
2005-10-27

Optical information medium including an information bearing surface and a functional layer, and reading method

#53
20050213435
2005-09-29

Pseudo-reflective read inhibitor for optical storage media

#54
20050174924
2005-08-11

Optical data storage medium and use of such medium

#55
20050148786
2005-07-07

Diimmonium compound and use thereof

#56
20050089799
2005-04-28

Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information

#57
20050081230
2005-04-14

Method of regulating reflectance of worm type optical recording medium and worm type optical recording medium

#58
20050078591
2005-04-14

Bit-wise optical data storage utilizing aluminum oxide single crystal medium

#59
20050078577
2005-04-14

Data recording or erasing method for an optical recording medium

#60
20050058028
2005-03-17

Optical information recording medium

#61
20050036421
2005-02-17

Information recording medium, information recording apparatus, information recording method, information playback apparatus, information playback method, recording program recording medium, and playback program recording medium

#62
20050013205
2005-01-20

Enhanced data storage and retrieval devices and systems and methods for utilizing the same

#63
20050007938
2005-01-13

Phase-change optical information recording medium and information recording and reading method using the recording medium

#64
20050007927
2005-01-13

Recording and reproducing method for optical recording medium and optical recording medium