BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram of an example of a configuration of a VOD system according to a first embodiment of the present invention;
FIG. 2 is a schematic block diagram of a functional structure of the VOD system;
FIG. 3 is an elevational view of an example of video display;
FIG. 4 is a block diagram of an internal configuration of a program/advertisement recommending unit;
FIG. 5 is a block diagram of a modified example of the internal configuration of the program/advertisement recommending unit;
FIG. 6 is a sequence diagram of processing in the VOD system according to the first embodiment;
FIG. 7 is a schematic diagram of an example of data on terminal ID and common ID stored in a common ID managing & storing unit;
FIG. 8 is a schematic diagram of an example of data on subscription information stored by a terminal authenticating unit and a charge managing unit;
FIG. 9 is an elevational view of an example of display of a common TOP screen;
FIG. 10 is an elevational view of an example of display of an authentication/new subscription screen;
FIG. 11 is an elevational view of an example of display of a recommendation confirmation screen;
FIG. 12 is a schematic diagram of an example of data of viewing history information, common ID, and terminal ID managed in association with each other;
FIG. 13 is a sequence diagram of a video distribution process in the VOD system according to the first embodiment;
FIG. 14 is a schematic diagram of an example of information obtained in the video distribution process;
FIG. 15 is a schematic block diagram of a functional structure of a VOD system according to a second embodiment of the present invention;
FIG. 16 is a sequence diagram of processing in the VOD system according to the second embodiment;
FIG. 17 is a schematic diagram of an example of data stored by a program/advertisement recommending unit;
FIG. 18 is a sequence diagram of a video distribution process in the VOD system according to the second embodiment;
FIG. 19 is a schematic block diagram of a functional structure of a VOD system according to a third embodiment of the present invention;
FIG. 20 is a sequence diagram of a process in the VOD system according to the third embodiment; and
FIG. 21 is a schematic diagram of an example of data of subscription information stored by a terminal authenticating unit and a charge managing unit according to the third embodiment.