Abstract: A user sends a request signal to a delivery management server 60 by utilizing a mobile station 10 in response to a broadcast service provided by a broadcast station 70. The request signal includes a music song ID of music song data segments which the user wants to be delivered and also an address of the destination to which the music song data segments be delivered. Upon the receipt of the request signal, the delivery management server 60 returns, in the case of unpopular songs, the music song data segments and a decrypting key for decrypting the data segments, and on the other hand, it returns, in the case of popular songs, only the decrypting key to the mobile station 10 or a STB 40.

Abstract: Program guide information of the program to be broadcast by the broadcast station 1 is reserved in the EPG server 15 of the center station 11. The EPG server 15 retrieves for each user, the program satisfying the conditions such as the category of the program registered in the personal information database 16, and then transmits the guide information of the retrieved programs to the portable telephone 14 of a user who has set the conditions, via the communication network 10. Thereby, even if the user is outside the home, if there is a program satisfying the conditions specified by the user, the user can obtain the information concerning the program by utilizing the portable telephone 14. Then, the user can instruct, with reference to the obtained program information, a recording operation from the portable telephone 14 to the VTR 6 in the home 12.

Abstract: The system of the present invention includes a set-top box 50 that provides programs broadcasted from a broadcast station 40 to users, a monitor 60, and mobile stations 10a through 10c accommodated in a mobile data communication network 20 and store mobile station IDs (identification information) for identifying a user. The mobile stations 10a through 10c transmit control signals including the mobile station IDs for the set-top box 50 to the set-top box 50. The set-top box 50 stores the mobile station IDs and viewing histories of the user and transmits the mobile station IDs and the viewing histories to an audience rating calculating server 70. The audience rating calculating server 70 generates user's attribute-specific audience rating data on the basis of the mobile station IDs and the viewing histories received.

Abstract: Provided is a program providing system capable of realizing provision of a program dependent on a user. The program providing system consists mainly of a set-top box STB, an television receiver TV, and a mobile phone MS. The set-top box STB and television receiver TV receive program data broadcasted from a broadcasting station BC and provide a user with a program represented by the program data. The mobile phone MS is accommodated by a mobile communication network MN and has an ID code (identification information), with which a user can be identified, stored in a memory thereof. The mobile phone MS transmits a control signal, to which the ID code is included, to the set-top box STB. The ID code and associated attribute information are stored in the set-top box STB. Upon receipt of a control signal sent from the mobile terminal MS, the set-top box acts according to the attribute information associated with the ID code included in the control signal.