ClassID:

198694

G11B20/00384 - 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 derived from a physical signature of the record carrier, e.g. unique feature set

Recent Application in this class:
#1
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

#2
20090259852
2009-10-15

Reliable storage medium access control method and device

#3
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

#4
20080291801
2008-11-27

Record Carrier with Copy Protection Means

#5
20070244827
2007-10-18

Method for Securing a Hard Drive and Preventing Cloning or Tampering Attacks

#6
20070124602
2007-05-31

Multimedia storage and access protocol

#7
20060281013
2006-12-14

System for copy protection of an information carrier

#8
20060274614
2006-12-07

Management of use of information that is recorded on an optical disk

#9
20060253722
2006-11-09

Uncopyable optical media through sector errors

#10
20060242071
2006-10-26

Method for minimizing pirating and/or unauthorized copying and/or unauthorized access of/to data on/from data media including compact discs and digital versatile discs, and system and data media for same

#11
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

#12
20060087950
2006-04-27

Reliable storage medium access control method and device

#13
20050220303
2005-10-06

Recording data recording method, recording data reproduction method, recording device, reproduction device, and multi-layered optical recording medium