ClassID:

198751

G11B20/00797 - CPC Classification

Classification description:

Signal processing not specific to the method of recording or reproducing; Circuits therefor; Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of times a content can be reproduced, e.g. using playback counters

Recent Application in this class:
#1
20160041979
2016-02-11

Information processing apparatus and associated method of content exchange

#2
20140089515
2014-03-27

Method and system for use in coordinating multimedia devices

#3
20120185662
2012-07-19

Limited use data storing device

#4
20120030366
2012-02-02

Method and system for use in coordinating multimedia devices

#5
20110103214
2011-05-05

DATA RECORDING MEDIUM, SERVER DEVICE USING THE SAME, AND METHOD OF MANAGING USE OF DATA RECORDING MEDIUM

#6
20100275127
2010-10-28

Information processing apparatus and associated method of content exchange

#7
20100180125
2010-07-15

Information service method, information service unit, recording or reproducing controlling method, and recording and/or reproducing unit

#8
20100027977
2010-02-04

Reproduction system

#9
20100014402
2010-01-21

Read-once record medium and a system with read protecting function

#10
20100008193
2010-01-14

REPRODUCTION SYSTEM

#11
20100005109
2010-01-07

Memory controller, nonvolatile storage device, and nonvolatile storage device system

#12
20090316896
2009-12-24

METHOD FOR MANAGING THE NUMBER OF VISUALIZATIONS, SECURITY PROCESSOR AND TERMINAL FOR SAID METHOD

#13
20090300735
2009-12-03

METHOD FOR CONTROLLING ACCESS TO CONTENT ON DATA CARRIER

#14
20090276635
2009-11-05

CONTROLLING DISTRIBUTION AND USE OF DIGITAL WORKS

#15
20090232312
2009-09-17

ENCRYPTED CONTENT REPRODUCTION DEVICE, ENCRYPTED CONTENT REPRODUCTION METHOD, PROGRAM, AND RECORDING MEDIUM FOR STORING THE PROGRAM

#16
20090226659
2009-09-10

Read-once record medium and a system with read protecting function

#17
20090214042
2009-08-27

Content playback apparatus, content playback method, computer program, key relay apparatus, and recording medium

#18
20090193479
2009-07-30

Method and apparatus for automatically notifying a renter of digital content when the rental period has expired

#19
20090157750
2009-06-18

Integrated multimedia file format structure, and multimedia service system and method based on the intergrated multimedia format structure

#20
20090150553
2009-06-11

Method and system for use in coordinating multimedia devices

#21
20090150199
2009-06-11

Visual substitution options in media works

#22
20090122670
2009-05-14

Data retrieval systems

#23
20090122660
2009-05-14

Data retrieval systems

#24
20090077204
2009-03-19

ENHANCED DELIVERY OF AUDIO DATA FOR PORTABLE PLAYBACK

#25
20090070600
2009-03-12

Method for etching and secure distribution of digital data, access device and writer

#26
20090003157
2009-01-01

Information Recording Medium, and Information Reproducing Apparatus and Method

#27
20080270804
2008-10-30

COPY PROTECTED DIGITAL DATA

#28
20080253251
2008-10-16

Position detection device, position detection method, position detection control device, position detection control method, position detection control program, access authentication device, access authentication method, access authentication control device, access authentication control method, access authentication control program, information storage device, and optical disk

#29
20080232220
2008-09-25

Optical disk and optical disk reproducing device

#30
20080219137
2008-09-11

Copy-Protected Optical Information Carrier

#31
20080196058
2008-08-14

Digest creating method and device

#32
20080178296
2008-07-24

Method and Device For Protecting the Contents of an Information Carrier

#33
20080163326
2008-07-03

Portable Video Hard-Disk Drive (pVHDD) System

#34
20080145026
2008-06-19

Portable Recording Medium, Recording Medium Playback Aapparatus, and Recording Medium Playback Method

#35
20080123481
2008-05-29

Method for Saving ther Keylockers on Optical Discs

#36
20080112293
2008-05-15

Optical information recording/reproducing apparatus and optical information recording medium

#37
20080092243
2008-04-17

Information managing apparatus and method, recording medium, and program

#38
20080089664
2008-04-17

Recording medium and apparatus for protecting copyrighted digital data

#39
20080013200
2008-01-17

Recording medium and apparatus for protecting copyrighted digital data

#40
20070230963
2007-10-04

Remote Control For Combination Compact Disc Recorder And Player System

#41
20070220194
2007-09-20

SYSTEM FOR COVERTLY STORING CONTROL INFORMATION

#42
20070212511
2007-09-13

Read-once record medium and a system with read protecting function

#43
20070206463
2007-09-06

Information Recording Medium

#44
20070204172
2007-08-30

INFORMATION PROCESSING APPARATUS AND METHOD, AND PROGRAM STORAGE MEDIUM

#45
20070195460
2007-08-23

Recording medium, recording method, recording apparatus, reproduction apparatus, data transmission method, and server device

#46
20070180534
2007-08-02

Recording apparatus that records information for protecting intangible property right, recording method thereof, record medium thereof, and program thereof

#47
20070177433
2007-08-02

Method and system for data security of recording media

#48
20070094143
2007-04-26

Multimedia-type contents reproduction device and reproduction method, and recording medium having stored thereon data used for the same

#49
20070083772
2007-04-12

Digital work protection system, record/playback device, recording medium device, and model change device

#50
20070081797
2007-04-12

Optical disk replay device

#51
20070074051
2007-03-29

Information processing apparatus and method, and program storage medium

#52
20070071420
2007-03-29

Recording medium and apparatus for protecting copyrighted digital data

#53
20070058505
2007-03-15

Data recovery systems

#54
20070033352
2007-02-08

Limited use data storing device

#55
20070009232
2007-01-11

Information processing system, information processing method, computer program executed in information processing system

#56
20060271646
2006-11-30

Enhanced delivery of audio data for portable playback

#57
20060257102
2006-11-16

Method and apparatus for managing contents

#58
20060253713
2006-11-09

Copy protected digital data

#59
20060232449
2006-10-19

Retention of information about digital-media rights in transformed digital media content

#60
20060222338
2006-10-05

Recording/playback control device, contents management method and recording/playback apparatus

#61
20060219087
2006-10-05

Content data reproducing apparatus with temporary data memory

#62
20060136340
2006-06-22

Post-paid billing system and method for multimedia files

#63
20060129514
2006-06-15

Information terminal and content storage/playback method

#64
20060106677
2006-05-18

Data distribution system and data selling apparatus therefor, data retrieving apparatus, duplicated data detecting system, and data reproduction apparatus

#65
20060056815
2006-03-16

Unified control and memory for a combined DVD/HDD system

#66
20060047978
2006-03-02

Information processing apparatus and method, and program storage medium

#67
20060037055
2006-02-16

Audio data communication system, audio data transmission apparatus, audio data reception apparatus, composite data communication system, composite data transmission apparatus and composite data reception apparatus

#68
20060023599
2006-02-02

Optical disk player

#69
20060005257
2006-01-05

Encrypted contents recording medium and apparatus and method for reproducing encrypted contents

#70
20050265549
2005-12-01

Recording medium and apparatus for protecting copyrighted digital data

#71
20050254788
2005-11-17

Scrambling content information in a first recording medium when downgrading the quality of content information for storage on a second recording medium

#72
20050251481
2005-11-10

Flexible host system for storage media

#73
20050237887
2005-10-27

Method of providing copy protection for optical storage media

#74
20050237886
2005-10-27

Information carrier provided with a transitional region between the clambing area and the information area

#75
20050165898
2005-07-28

Information processing apparatus and associated method of content exchange

#76
20050160053
2005-07-21

Semiconductor memory card that records contents for trial and purchase, and recording apparatus, recording and reproducing apparatus, and sales method for the same

#77
20050094516
2005-05-05

Information record medium and information writing/reading apparatus

#78
20050075981
2005-04-07

Information managing apparatus and method, recording medium, and program

#79
20050050343
2005-03-03

Storage media access control method and system

#80
20050010790
2005-01-13

Cryptographic module for the storage and playback of copy-protected electronic tone and image media which is protected in terms of use