G11B20/00333 - CPC Classification Index

ClassID:

198687 ⎘

G11B20/00333 - 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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in header data, e.g. in sector headers

Recent Application in this class:

20150154999

2015-06-04

CONTENT TRANSMISSION DEVICE, CONTENT TRANSMISSION METHOD, AND COMPUTER PROGRAM USED THEREWITH

20130067223

2013-03-14

Content transmission device, content transmission method, and computer program used therewith

20120096260

2012-04-19

Content transmission device, content transmission method, and computer program used therewith

20100036841

2010-02-11

Searching apparatus and searching method

20100031035

2010-02-04

Block-based media content authentication

20090049311

2009-02-19

Efficient elimination of access to data on a writable storage media

20080310292

2008-12-18

OPTICAL DISK, OPTICAL DISK RECORDING AND REPRODUCING APPARATUS, METHOD FOR RECORDING, REPRODUCING AND DELETING DATA ON OPTICAL DISK, AND INFORMATION PROCESSING SYSTEM

20080273696

2008-11-06

Use of indirect data keys for encrypted tape cartridges

20080104419

2008-05-01

Reproducing method, reproducing apparatus, recording method, and recording apparatus

#10

20080091945

2008-04-17

Secure device authentication system and method

#11

20070107064

2007-05-10

Recording method, recording apparatus, reproducing method and reproducing apparatus

#12

20070107063

2007-05-10

Method and means for writing decryption information to a storage medium, storage medium, method and means for reading data from a storage medium, and computer program

#13

20070091359

2007-04-26

Content transmission device, content transmission method, and computer program used therewith

#14

20070076873

2007-04-05

Data processing device

#15

20060168662

2006-07-27

Method and apparatus for ciphering playback mode information for recording on record medium

#16

20060161584

2006-07-20

File transmission system and file transmission method

#17

20060069964

2006-03-30

Information processing method, apparatus, and information processing program

#18

20050223240

2005-10-06

Copy protection system for data carriers

#19

20050201556

2005-09-15

Trick play of encrypted data in a conditional access signal

#20

20050185547

2005-08-25

Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system

#21

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

#22

20050129232

2005-06-16

Reproduction method and apparatus, and recording method and apparatus

#23

20050076008

2005-04-07

Searching apparatus and searching method

#24

20050044046

2005-02-24

Information processing device and mehtod, information providing device and method, use right management device and method, recording medium, and program

#25

20050027557

2005-02-03

Content distributing system, content distributing method, content distributing server, and terminal unit