| 摘要 |
FIELD: physics, computer engineering.SUBSTANCE: invention relates to methods and apparatus for protecting recording media from copying. The copy protection method comprises steps of determining program instructions to be stored on an optical recording medium, wherein part of the program instructions during execution thereof in a playback device causes at the first step verification, by the playback device, of presence of encryption characteristics on the optical recording medium and if presence of encryption characteristics is determined, confirmation of integrity of the encryption characteristics is performed at the second step. The program instructions are configured to initiate playback of an authentic audiovisual or audio content stored on the optical recording medium, with authentic quality, only if presence of encryption characteristics on the optical recording medium was determined at the first step and integrity thereof was confirmed at the second step.EFFECT: high reliability of copy protection and larger free area on a recording medium.18 cl, 65 dwg |
