ClassID:

198713

G11B20/00521 - 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 content or user data is encrypted wherein each session of a multisession recording medium is encrypted with a separate encryption key

Recent Application in this class:
#1
20150381359
2015-12-31

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

#2
20150046719
2015-02-12

Information processing device, information processing method, and program

#3
20130236009
2013-09-12

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

#4
20120257744
2012-10-11

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

#5
20120045062
2012-02-23

Information processing device, information processing method, and program

#6
20100290619
2010-11-18

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

#7
20080226078
2008-09-18

ENABLING RECORDING AND COPYING DATA

#8
20080031446
2008-02-07

Method, apparatus, and computer program for generating session keys for encryption of image data

#9
20080013723
2008-01-17

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

#10
20080005802
2008-01-03

DVD identification and managed copy authorization

#11
20070230297
2007-10-04

Signal Processing System

#12
20070220194
2007-09-20

SYSTEM FOR COVERTLY STORING CONTROL INFORMATION

#13
20070140484
2007-06-21

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

#14
20060168357
2006-07-27

Information input/output system

#15
20060140402
2006-06-29

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

#16
20060069651
2006-03-30

Method and apparatus for distributing multimedia programs

#17
20060018473
2006-01-26

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

#18
20050078825
2005-04-14

Encryption apparatus, decryption apparatus, secret key generation apparatus, and copyright protection system

#19
20050021988
2005-01-27

Apparatus, method, and program product for secure data formatting and retriving, and computer readable transportable data recording medium storing the program product

#20
20050021948
2005-01-27

Secure single drive copy method and apparatus