A content usage management system includes a terminal device using content
as digital production and a server device managing usage of the content
on the terminal device. The server device includes a license information
memory unit that memorizes license information indicating a usage rule of
the content based on a user of the terminal device, and a license ticket
issuance unit that generates a license ticket as right information
indicating a part or all of a usage rule on the license information
corresponding to the user based on a request from the user. The terminal
device includes a requesting unit that requests usage of the content to
the server device according to the user's designation, a receiving unit
that receives the license ticket sent from the server device, and a
content usage control unit that controls usage of the content according
to the usage rule indicated on the received license ticket. The
requesting unit makes a request by sending expected information
indicating content to be requested and a usage volume of the content, and
the license ticket issuance unit generates a license ticket according to
the expected information sent from the requesting unit and sends the
license ticket to the terminal device.