Patent ID: 7562127

Claim:
A contents additional service inquiry server for receiving inquiries for additional services provided by a contents center and a third-party contents additional service providing server from a user, comprising: means for receiving a registration request from the contents center or the third-party contents additional service providing server which specifies a contents identifier that uniquely identifies contents in clear distinction from any other contents and which is embedded into the contents solely by the contents center before distribution of the contents, the registration request also requesting registration of registration request information including additional service information regarding each additional service that can be provided with respect to the contents having the contents identifier and provider location information regarding a location of a respective provider of said each additional service, means for authenticating whether said contents center is a delivery source of the contents having the contents identifier specified by said registration request only when said registration request is issued by said contents center, means for storing the registration request information received by said means for receiving, in correspondence to the contents identifier, such that registration request information registered by said contents center and registration request information registered by said third-party contents additional service providing server are separately stored in clear distinction from each other, and means for searching and returning said registration request information specified by the contents identifier when an inquiry request for the additional service that specifies the contents identifier is issued by the user, by uniquely identifying the registration request information corresponding to the contents identifier specified by the inquiry request, wherein the registration request information registered by the contents center and the registration request information registered by the third-party contents additional service providing server are separately presented in clear distinction from each other.