198693 ⎘
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 by varying the pit format, e.g. depth, width, length or edge positions
Optical disk reproduction apparatus, optical disk reproduction method, reproduction processing device and reproduction processing method
#2Optical disc recording apparatus, optical disc recording circuit and optical disc
#3Information recording medium, method and apparatus for recording and reproducing information
#4Optical disc, playback apparatus for optical disc, and apparatus and method for manufacturing optical disc
#5Optical recording medium with write-once and rewritable properties
#6Information recording medium, method and apparatus for recording and reproducing information
#7Recording medium with optional information and apparatus and methods for forming, recording, reproducing and controlling reproduction of the recording medium
#8Record Carrier with Copy Protection Means
#9Information recording medium, method and apparatus for recording and reproducing information
#10Information recording medium, method and apparatus for recording and reproducing information
#11Information recording medium, method and apparatus for recording and reproducing information
#12Information recording medium, method and apparatus for recording and reproducing information
#13Information recording medium, method and apparatus for recording and reproducing information
#14Information recording medium, method and apparatus for recording and reproducing information
#15Information recording medium, method and apparatus for recording and reproducing information
#16Information recording medium, method and apparatus for recording and reproducing information
#17Information recording medium, method and apparatus for recording and reproducing information
#18Information recording medium, method and apparatus for recording and reproducing information
#19Data reproducing apparatus including subsignal generated from ID information
#20Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk formed with pit strings and mark strings with binary number series features
#21Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disks, and optical disk formed with pit strings and mark strings
#22Information recording medium, method and apparatus for recording and reproducing information
#23Information recording medium, method and apparatus for recording and reproducing information
#24Information recording medium, method and apparatus for recording and reproducing information
#25Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk
#26Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disks formed with pits strings and mark strings
#27Data reproducing apparatus including subsignal generated from ID information
#28Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disks formed with pits strings and mark strings
#29Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disks formed with pits strings and mark strings
#30Optical disk recording apparatus, method, manufacturing apparatus and information processing device including binary number series generating unit features regarding an address on an optical disk
#31Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk formed with pit strings and mark strings
#32Optical disc recording apparatus and methods using pseudo-random number sequence for recording auxiliary information
#33Recording medium with copy protection indicating information and apparatus and methods for forming, recording, reproducing and restricting reproduction of the recording medium
#34Apparatus and method for optically recording sub data through radial deviation of pits or marks
#35Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk formed with pit strings and mark strings with radial deviation features
#36Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk formed with pit strings and mark strings
#37Recording medium for storing write protection information and write protection method thereof
#38Optical disc, recording apparatus and method, and reproduction apparatus and method
#39Optical disc, recording apparatus method, and reproduction apparatus and method
#40Information recording medium, information recording apparatus and information reproduction apparatus for the same
#41Information recording/reproducing method, with recorded sub-data
#42Information recording/reproducing apparatus, with recorded sub-data
#43Optical disc, recording apparatus and method, and reproduction apparatus and method
#44Apparatus and associated methodology of imparting content protection to optically recorded data for secure reproduction
#45Apparatus and associated methodology of imparting content protection to optically recorded data for secure reproduction
#46Apparatus and methods for securing information in storage media
#47Recording medium for storing write protection information and write protection method thereof
#48Recording medium for storing write protection information and write protection method thereof
#49Recording medium for storing write protection information and write protection method thereof
#50Recording medium for storing write protection information and write protection method thereof
#51Information recording medium, usage management method, and usage management apparatus
#52Information recording medium, method and apparatus for recording and reproducing information
#53Information recording processing apparatus, information reproduction processing apparatus, information recording medium, information recording processing method, information reproduction processing method, and computer program
#54Process for manufacturing an optical disk with recorded sub-data