Patent ID: 7747696

Claim:
A content related information provision apparatus that provides related information on contents including reference data arranged in time series, the apparatus comprising: related information receiving means that receives related information on contents from one or more user devices, the related information including an identification of the contents, user remarks to the contents, and a reference time position of the user remarks relating to the contents; related information storing means that stores the received related information; reference information receiving means that receives reference information from the one or more user devices, the reference information including a keyword specifying contents to be referred to by the user remarks to the contents, and specifying a time reference position in the contents; reference information storing means that stores the received reference information; information delivering means that searches the related information storing means for matching related information that matches at least one of the keyword or the time reference position of the reference information from the reference information receiving means, and transmits the matching related information for displaying on a display at a specific user device from among said one or more user devices, and that delivers at least one of the matching related information or the stored reference information to the one or more user devices; means that specifies an installation region of a terminal apparatus of the one or more user devices to be a delivery destination according to the information delivering means, the installation region indicating a geographic region where the terminal apparatus of the one or more user devices is installed; and information changing means that changes contents of related information and/or reference information, which should be delivered, according to the installation region, wherein the content referred to in the matching related information was already distributed or will be distributed to the one or more user devices.