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Application filed by Holografia Specialized Company, Inst Physics Of Semi Conductor, Inst Of Information RecordingfiledCriticalHolografia Specialized Company
Priority to UAA200512696ApriorityCriticalpatent/UA80889C2/en
Publication of UA80889C2publicationCriticalpatent/UA80889C2/en
The proposed method for recording identification marks on a compact disk can be used for protection against unauthorized copying and propagation of compact disks. The method consists in recording, by a laser beam, holographic identification marks on the information tracks of the compact disk. Each mark is designed as a set of dashed lines, which are arranged an angle of 45 ... 90 degrees to the line that is tangential to the information track. The proposed method provides a possibility to increase the brightness of the identification marks without distorting the records on the information tracks.
UAA200512696A2005-12-282005-12-28Method for recording identification marks on a compact disk
UA80889C2
(en)
Recording medium with physical access control (pac) cluster thereon and apparatus and methods for forming, recording, and reproducing the recording medium.
Information storage media for use with a recording and / or playback apparatus, method of recording information to an information storage and / or information storage media playback medium, and recording and / or recording apparatus playback for use with an information storage medium
Information recording medium, information reproducing apparatus and methdo, and apparatus for and method of manufacturing the information recording medium
Information recording medium, information reproducing apparatus and method, and apparatus for and method of manufacturing the information recording medium
Information recording medium, mastering device, identification information recording device, identification information reproduction device, mastering method, identification information recording method, and identification information reproduction method