ClassID:

198772

G11B20/00949 - 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 measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches said intentional errors occurring due to bad sectors, which are either physically destroyed or which are declared defective in the defect management information

Recent Application in this class:
#1
20240296869
2024-09-05

Magnetic disk device

#2
20180261248
2018-09-13

Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods

#3
20170047092
2017-02-16

Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods

#4
20120092975
2012-04-19

Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods

#5
20110214140
2011-09-01

Optical recording medium, apparatus and method of recording/reproducing data thereon/therefrom, and computer-readable recording medium storing program to perform the method

#6
20090180756
2009-07-16

Apparatus for and a method of copy-protecting a content carrying recording medium

#7
20080232214
2008-09-25

OPTICAL RECORDING MEDIUM, APPARATUS AND METHOD OF RECORDING/REPRODUCING DATA THEREON/THEREFROM, AND COMPUTER READABLE RECORDING MEDIUM STORING PROGRAM TO PERFORM THE METHOD

#8
20080222737
2008-09-11

Apparatus for and a method of copy-protecting a content carrying recording medium

#9
20080219123
2008-09-11

Copying digital content by emulating playing of a recording medium by a player

#10
20080192619
2008-08-14

Optical recording medium, apparatus and method of recording/reproducing data thereon/therefrom, and computer-readable recording medium storing program to perform the method

#11
20080192603
2008-08-14

OPTICAL RECORDING MEDIUM, APPARATUS AND METHOD OF RECORDING/REPRODUCING DATA THEREON/THEREFROM, AND COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM TO PERFORM THE METHOD

#12
20080192602
2008-08-14

Optical recording medium, apparatus and method of recording/reproducing data thereon/therefrom, and computer-readable recording medium storing program to perform the method

#13
20080151740
2008-06-26

Method for data storage protection and encryption

#14
20080127357
2008-05-29

Method for generating read error during standard DVD disc manufacturing

#15
20080101191
2008-05-01

Methods, system and mediums for use in protecting content

#16
20080022125
2008-01-24

Copy protection of optical discs

#17
20070220194
2007-09-20

SYSTEM FOR COVERTLY STORING CONTROL INFORMATION

#18
20070168838
2007-07-19

Reproduction apparatus and method for reproducing a unique medium identifier

#19
20070036356
2007-02-15

DVD copy protection

#20
20060291651
2006-12-28

Method for converting non copy protected data into copy protected data

#21
20060218645
2006-09-28

Method for copy protecting a record carrier, copy protected record carrier and means for detecting access control information

#22
20060215295
2006-09-28

Recording media, recording and reproducing apparatus, and method for recording and reproducing

#23
20060190800
2006-08-24

Copy protected DVD disc and method for producing and validating same

#24
20060136729
2006-06-22

Copy protection for optical discs

#25
20050259547
2005-11-24

Optical recording medium, apparatus and method of recording/reproducing data thereon/therefrom, and computer-readable recording medium storing program to perform the method

#26
20050083740
2005-04-21

Disc recording medium, recording method, disc drive device