Content distribution service providing system and content distribution device and user terminal device thereof
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Abstract
A content distribution device carries out distribution services of contents whose copyright protection is required via a communication line, to a user terminal device that enables to record contents to an information storage medium in which medium information is written, when receiving a content distribution request from the user terminal device, distributes a content list, and receives content selection information. At that moment, the content distribution device acquires the medium information from the user terminal device, sends this medium information to an encoded content key issuing device and receives an encoded content key based on the medium information concerned, and encodes contents by this encoded content key and distributes them to the user terminal device as distribution request source. The encoded content key is to be distributed at every viewing and/or listening request from the user terminal device, and when viewing and/or listening valid period expires, key distribution is stopped.
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Citations
18 Claims
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1-3. -3. (canceled)
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4. A content distribution device of a content distribution service providing system for carrying out distribution services of contents whose copyright protection is required via a communication line, to a user terminal device that enables recording contents to an information storage medium in which medium information of a medium specific identifier and medium key information are written, or to another information storage medium different from the information storage medium in a status where the information storage medium is set, comprising:
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content distribution request acquisition means for receiving a content distribution request based on a content selection list to be distributed in advance, from the user terminal device;
viewing and/or listening condition acquisition means for distributing a viewing and/or listening condition list including at least one of a viewing and/or listening valid period and the number of viewing and/or listening times to the user terminal device that has made the request at receiving of the content distribution request, and receiving a viewing and/or listening condition selection result thereof;
medium information control means for acquiring and controlling the medium information from the user terminal device;
encoded content control means for encoding and controlling contents specified in the content selection list by a predetermined content key, and distributing encoded contents corresponding to the content distribution request to the user terminal device that has made the request;
encoded content key acquisition means for sending the medium information to an encoded content key issuing device, asking it to encode a content key used in encoding the distribution contents on the basis of the medium information and device specific key information registered in advance, and receiving the encoded content key;
encoded content key distribution means for distributing an encoded content key corresponding to the user terminal device that has made a viewing and/or listening request according to a viewing and/or listening request for already distributed encoded contents, from the user terminal device; and
user control means for controlling the viewing and/or listening conditions in unit of user, and determining whether viewing and/or listening conditions are satisfied or not at the viewing and/or listening request, wherein the encoded content key distribution means distributes the encoded content key only when it is determined that viewing and/or listening conditions are satisfied at the viewing and/or listening request. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18-30. -30. (canceled)
Specification