ClassID:

198716

G11B20/00543 - 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 encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein external data is encrypted, e.g. for secure communication with an external device or for encrypting content on a separate record carrier

Recent Application in this class:
#1
20120079610
2012-03-29

Content management program, method and device

#2
20110286315
2011-11-24

Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk

#3
20110131422
2011-06-02

Systems and Methods Using Cryptography to Protect Secure Computing Environments

#4
20100241863
2010-09-23

DEVICE FOR REPRODUCING DIGITAL CONTENT, SECURE ELECTRONIC ENTITY, SYSTEM COMPRISING SAID ELEMENTS AND METHOD FOR REPRODUCING DIGITAL CONTENT

#5
20100153743
2010-06-17

ELECTRONIC DEVICE AND METHOD TO CONTROL OUTPUT THEREOF

#6
20100153724
2010-06-17

SYSTEM AND METHOD FOR A KEY BLOCK BASED AUTHENTICATION

#7
20100023761
2010-01-28

Systems and Methods Using Cryptography to Protect Secure Computing Environments

#8
20090232312
2009-09-17

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

#9
20090168619
2009-07-02

Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk

#10
20090144549
2009-06-04

COPYRIGHT PROTECTION PROCESSING APPARATUS AND COPYRIGHT PROTECTION PROCESSING METHOD

#11
20090138726
2009-05-28

Authentication-secured access to a data carrier comprising a mass storage device and chip

#12
20090100273
2009-04-16

Prevent data storage device circuitry swap

#13
20080294908
2008-11-27

Recording Device, Content Key Processing Device, Recording Medium, and Recording Method

#14
20080270796
2008-10-30

System and method for providing program information, and recording medium used therefor

#15
20080114698
2008-05-15

Systems and methods using cryptography to protect secure computing environments

#16
20080077531
2008-03-27

Systems and methods using cryptography to protect secure computing environments

#17
20080034229
2008-02-07

Systems and methods using cryptography to protect secure computing environments

#18
20080034214
2008-02-07

Systems and Methods Using Cryptography to Protect Secure Computing Environments

#19
20080033884
2008-02-07

Systems and Methods Using Cryptography to Protect Secure Computing Environments

#20
20080031461
2008-02-07

Systems and Methods Using Cryptography to Protect Secure Computing Environments

#21
20080031457
2008-02-07

Systems and methods using cryptography to protect secure computing environments

#22
20080011835
2008-01-17

Method and apparatus for searching rights objects stored in portable storage device using object location data

#23
20070288764
2007-12-13

Systems and methods using cryptography to protect secure computing environments

#24
20070143594
2007-06-21

Method for distributing digital data and burning them on a DVD, client device and remote server associated

#25
20070124250
2007-05-31

Content management program, method and device

#26
20070118765
2007-05-24

Method and system of decrypting disc

#27
20060248353
2006-11-02

Systems and methods using cryptography to protect secure computing environments

#28
20060131407
2006-06-22

Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk

#29
20060021063
2006-01-26

Method for transmission/reception of contents usage right information in encrypted form, and device thereof

#30
20060010498
2006-01-12

Apparatus and method for processing digital rights object

#31
20060006220
2006-01-12

Method and apparatus for searching rights objects stored in portable storage device using object location data

#32
20050144465
2005-06-30

Recording system and method, recording device and method, input device and method, reproduction system and method, reproduction device and method, recording medium, and program