| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device and method for content use control according to a type of a reproducing device configured to reproduce contents stored on a medium. <P>SOLUTION: A device certificate in which the type of a reproducing device configured to reproduce contents stored on a medium, for example a device type indicating a reproduction only device such as a BD player, a PC, or the like, is recorded is provided from the reproducing device to the medium. The data processing section of the medium checks device type information recorded in the device certificate, encodes a media ID by selecting and applying a different encoding algorithm according to the device type, and then provides the encoded media ID to the reproducing device. The reproducing device decodes the encoded media ID by a decoding algorithm corresponding to the type of the device itself. Only when the decoding has succeeded, and the media ID has been obtained, the contents can be decoded and reproduced. <P>COPYRIGHT: (C)2013,JPO&INPIT |
