06873975 is referenced by 103 patents and cites 23 patents.

A content usage control system comprises a copyright holder system, content server, license server and user system. The ACL setting section of the copyright holder system sets a license ACL expressed as a structure by a combination of logic sums and logic products of a plurality of partial licenses for the content, based on the user ID and a plurality of physical element IDs including media used in the user system, and stores the license ACL in an access control list. The license server controls the usage of the content by the user utilizing the access control list.

Title
Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method
Application Number
9/521646
Publication Number
6873975 (B1)
Application Date
March 8, 2000
Publication Date
March 29, 2005
Inventor
Yuji Miyazawa
Kanagawa
JP
Makoto Yoshioka
Kanagawa
JP
Takahisa Hatakeyama
Kanagawa
JP
Agent
Greer Burns & Crain
Assignee
Fujitsu
JP
IPC
H04L 009/00
G06F 017/60
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