公开(公告)号：EP1093069A3

公开(公告)日：2004-03-03

申请号：EP00307111.5

申请日：2000-08-18

申请人： FUJITSU LIMITED

发明人： Kuroda, Yasutsugu, c/o Fujitsu Limited ,  Yoshioka, Takashi, c/o Fujitsu Limited ,  Ono, Etsuo, c/o Fujitsu Limited

IPC分类号： H04L9/32 ,  G06F1/00

CPC分类号： G06Q10/10 ,  H04L9/3247 ,  Y10S707/99931 ,  Y10S707/99932 ,  Y10S707/99939

摘要： An electronic document is registered as electronic original data in an apparatus (11) different from the computer environment (12) of a user. At this time, a registration certificate for uniquely identifying the electronic original data (14) is issued, and the user accesses the electronic original data using the issued registration certificate. This allows authenticity of an electronic document to be ensured, and copies or forgeries to be detected.

公开(公告)号：EP1085394A3

公开(公告)日：2002-12-18

申请号：EP00306737.8

申请日：2000-08-08

申请人： FUJITSU LIMITED

发明人： Kamada, Jun, c/o Fujitsu Limited ,  Kotani, Seigo, c/o Fujitsu Limited ,  Ono, Etsuo, c/o Fujitsu Limited ,  Hatanaka, Massayuki, c/o Fujitsu Limited ,  Yoshida, Masatoshi, c/o Fujitsu Limited ,  Nakai, Takahiro, c/o Fujitsu Limited

IPC分类号： G06F1/00

CPC分类号： G11B20/00086 ,  G06F21/10 ,  G11B20/00137 ,  G11B20/0021 ,  G11B20/00246

摘要： The apparatus controls access to content such as software, music or movies stored in digital form on a storage medium such as a magneto-optical [MO] disc. The apparatus comprises an MO disk drive (120), MPEG2 decoder (130), and MO disk (140) as physical elements. Information for identifying these physical elements (identifying information) is allocated to each of these physical elements. License information, indicating whether access to the content is to be allowed or not, is recorded on the disk. Access to the content recorded on the disk is controlled based on the license information and the identifying information.