| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a system and method for controlling the use and duplication of digital content data distributed on removable recording media. <P>SOLUTION: Digital content is protected by controlling or limiting the number of protected (e.g., encrypted) copies of the digital content to be made (202, 203). If copies are desired, the maximum number of allowable copies of the protected digital content are made and stored on a computer's hard drive when the storage medium (e.g., a CD) containing the digital content is inserted into the computer (201, 202, 203). Each copy can then be moved but not copied to other devices (e.g., portable devices having a semiconductor memory) (204, 205, 206). <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
