СПОСОБ УПРАВЛЕНИЯ ИНФОРМАЦИЕЙ ДЛЯ ЗАЩИТЫ ОТ КОПИРОВАНИЯ НОСИТЕЛЯ ЗАПИСИ

摘要

A method for managing copy protection information of a recording medium is disclosed. A data stream encrypted using copy protection information is recorded in a data area of an optical disc such as a write once optical disc or a rewritable optical disc, while the copy protection information and Digital Rights Management (DRM) information set by a content provider are recorded together in a key locker of the optical disc. When a data stream of an optical disc is reproduced, the operation of reproducing or copying the encrypted data stream is controlled according to information of allowed playback time, the number of copy times and copy permission/prohibition information, which is included in the Digital Rights Management information. This effectively prevents contents such as data files transmitted over the Internet from being illegally duplicated.