198769 ⎘
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
Sub-classes:Magnetic disk device configured to write parity data that is based on data being written to a parity sector when no error is detected in writing the data being written
#2Method and apparatus for delivering encoded content
#3Electronic system for the protection and control of license transactions associated with the alteration of replicated read only media and its bound licensed content
#4Electronic system for the protection and control of license transactions associated with the alteration of replicated read only media and its bound licensed content
#5CONTENT DISTRIBUTION WITH RENEWABLE CONTENT PROTECTION
#6Method and devices for copy protection, copy protected record carrier
#7Method and devices for copy protection, copy protected record carrier
#8Limited use data storing device
#9Electronic system for the protection and control of license transactions associated with the disablement of replicated read only media and its bound licensed content
#10METHOD OF ABOLISHING UNAUTHORIZED COPYING OF DIGITAL DATA STORED ON AN OPTICAL DISC
#11COPY PROTECTION OF OPTICAL DISCS
#12Data storage in optical discs
#13COPY PROTECTION SYSTEM FOR OPTICAL DISCS
#14ACCESS CONTROLLED OPTICAL DISC AND METHOD THEREFOR
#15System and Method for Software Activation Through Digital Media Fingerprinting
#16Information recording medium, method and apparatus for recording and reproducing information
#17METHOD AND SYSTEM FOR DIGITAL CONTENT PROTECTION
#18CONTENT DISTRIBUTION WITH RENEWABLE CONTENT PROTECTION
#19Information service method, information service unit, recording or reproducing controlling method, and recording and/or reproducing unit
#20Access Controlled Optical Disc and Method Therefor
#21Systems and methods for media authentication
#22Systems and methods for media authentication
#23System and method for combining pre-mastered errors with marks or printed spots on optical media
#24PLAYER-READABLE CODE ON OPTICAL MEDIA
#25Player-readable code on optical media
#26Method and product for copy protection of optical discs using unbalanced DC content
#27Controlling the downloading and recording of digital data
#28Apparatus for and a method of copy-protecting a content carrying recording medium
#29Online system and method for restoring electronic media on electronic storage devices
#30Data retrieval systems
#31Limited use memory device with associated information
#32Data retrieval systems
#33Information recording medium, method and apparatus for recording and reproducing information
#34Information recording medium, data structure, and recording apparatus
#35Prevention of software and movie piracy
#36PRODUCT PACKAGING INCLUDING DIGITAL DATA
#37Record Carrier with Copy Protection Means
#38Method and Device For Controlling Distribution And Use of Digital Works
#39Copy protection of optical discs
#40Recorder/reproducer and content data protection system for preventing unauthorized use of content
#41Apparatus for and a method of copy-protecting a content carrying recording medium
#42Apparatus for and a method of copy-protecting a content carrying recording medium
#43Copy-Protected Optical Information Carrier
#44Copy Protection for Video Content Contained in the VOB File Structure
#45Method for modifying optical path on optical recording medium having distortion regions
#46Persistent Electro-Optic Devices and Processes for Optical Media
#47Content Replication Deterrent Method on Optical Discs
#48Content Replication Deterrent Method on Optical Discs
#49Optical Information Carrier
#50Information recording medium, method and apparatus for recording and reproducing information
#51Content Replication Deterrent Method on Optical Discs
#52Content Replication Deterrent Method on Optical Discs
#53Content Replication Deterrent Method on Optical Discs
#54Content Replication Deterrent Method on Optical Discs
#55Information recording medium, method and apparatus for recording and reproducing information
#56Information recording medium, method and apparatus for recording and reproducing information
#57METHOD AND APPARATUS FOR CONTROLLING ACCESS TO STORAGE MEDIA
#58METHOD AND APPARATUS FOR CONTROLLING ACCESS TO STORAGE MEDIA
#59ENSURING THE COPY PROTECTION OF DIGITAL DATA
#60Information recording medium, method and apparatus for recording and reproducing information
#61Information recording medium, method and apparatus for recording and reproducing information
#62Information recording medium, method and apparatus for recording and reproducing information
#63Information recording medium, method and apparatus for recording and reproducing information
#64Information recording medium, method and apparatus for recording and reproducing information
#65Information recording medium, method and apparatus for recording and reproducing information
#66Information recording medium, method and apparatus for recording and reproducing information
#67Method and apparatus for digital data accompanied by degradation
#68Storage Media Access Control Method and System
#69MATERIALS FOR OPTICAL MEDIUM COPY-PROTECTION TRANSIENTLY REACTING TO A READER BEAM
#70Optical recording apparatus, recording method for optical recording medium and optical recording medium
#71Product Packaging Including Digital Data
#72Recording medium, recording method and apparatus, reproducing method and apparatus, data transmitting method, and data decrypting method
#73Method of manufacturing a limited use data storing device
#74Method and apparatus for delivering encoded content
#75Anti-theft system for optical products
#76Reproduction apparatus and method for reproducing a unique medium identifier
#77STRUCTURES AND PROCESSES FOR CONTROLLING ACCESS TO OPTICAL MEDIA
#78Electro-Optic Device and Process for Optical Media
#79Stable Electro-Chromic Device
#80Conditional access to store content using non-standard media
#81RECORDING MEDIUM, RECORDING METHOD AND APPARATUS, REPRODUCING METHOD AND APPARATUS, DATA TRANSMITTING METHOD, AND DATA DECRYPTING METHOD
#82Security in digital data distribution
#83Online system and method for restoring electronic media on electronic storage devices
#84Optical disc registration system
#85Recordable optical disc
#86Data recovery systems
#87Limited use data storing device
#88Defeat of the copy protection of optical discs
#89Information recording medium, method and apparatus for recording and reproducing information
#90Information recording medium, method and apparatus for recording and reproducing information
#91Information recording medium, method and apparatus for recording and reproducing information
#92Memory device activation and deactivation
#93Limited use data storing device
#94Product packaging including digital data
#95Method for converting non copy protected data into copy protected data
#96Management of use of information that is recorded on an optical disk
#97Controlling the downloading and recording of digital data
#98Method and system for protecting digital media from illegal copying
#99Limited use memory device with associated information
#100Method 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
#101Limited play optical devices with interstitial reactive layer and methods of making same
#102Optical media protection driver
#103Method for copy protecting a record carrier, copy protected record carrier and means for detecting access control information
#104Methods of copy protecting software stored on portable memory
#105Copy protected DVD disc and method for producing and validating same
#106Copy protection for video content contained in the VOB file structure
#107Method and system for protecting against illegal copy and/or use of digital contents stored on optical or other media
#108Quantum key distribution method and communication device
#109Method and apparatus for controling access to storage media
#110Access controlled optical disc and method therefor
#111Copy protection system for optical discs
#112Data retention of integrated circuit on record carrier
#113Modulator, modulation method, and method of manufacturing an optical recordable medium with enhanced security for confidential information
#114Apparatus and method for digital content concealment in a storage medium recorded using a recording device
#115Method and apparatus for the copy protection of optical discs
#116Limited play optically-readable medium with liquid crystals and methodology therefor
#117Method and apparatus for data files used in the transmission of information
#118Relating to the copy protection of optical discs
#119Unlocking an audiovisual product
#120Product packaging including digital data
#121Copy-protected optical media and method of manufacture thereof
#122Systems and methods for media authentication
#123Information recording medium, method and apparatus for recording and reproducing information
#124Method and system for optical disc copy-protection
#125Method and apparatus for controlling access to storage media
#126Piracy-resistant data leasing system and method
#127Data storage in optical discs
#128Storage media access control method and system
#129Method for facilitating copyright protection in digital media and digital media made thereby
#130Scrambled video streams in an audiovisual product
#131Obscuring data in an audiovisual product
#132Copy-protected optical information carrier and methods for its manufacture and operation
#133Information recording and reproducing apparatus, and information recording and erasing method
#134Copy protection of optical discs
#135Contact induced data storage device destruction