Information distribution system, its distribution center apparatus and user terminal apparatus, and information storage medium usable for the system
AssigneeKabushiki Kaisha Toshiba
InventorShinichi KURIHARA
Life of this patent
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AssigneeKabushiki Kaisha Toshiba
InventorShinichi KURIHARA
Estimating the term…
When distributing an encrypted content to a user terminal apparatus via a communication line, a distribution center apparatus requires a medium ID of an information storage medium, and encrypts a decryption key of the encrypted content by using the corresponding medium ID to transmit the encrypted decryption key to the terminal apparatus. The terminal apparatus downloads to store the encrypted content, receives the encrypted key to decrypt it in the use of the medium ID of the storage medium and to decrypt the encrypted content by using the decryption key. In such a system, the center apparatus provides print information corresponding to view conditions of a distributed content to the terminal apparatus in response to the request therefrom, and the terminal apparatus makes the print information appropriately printable by means of a printer.
An information distribution system which distributes information data to a user terminal apparatus from a distribution center apparatus via a communication line, wherein
An information distribution system which distributes information data to a user terminal apparatus from a distribution center apparatus via a communication line, wherein
A distribution center apparatus, in an information distribution system distributing information data to a user terminal apparatus via a communication line, which individually manages to each store information data encrypted with a prescribed key and the key in advance, distributes information data required from the user terminal apparatus in an encrypted state, requires to present medium proper identification information stored on an information storage medium having proper identification information to the user terminal apparatus, encrypts to distribute the key itself used for encrypting the information data by using the medium proper identification information presented in response to the request, decrypts the encrypted key by using the medium proper identification information on a side of the user terminal apparatus, and decrypts the encryption of the distributed information data with the decrypted key, the distribution center apparatus comprising:
A distribution center apparatus, in an information distribution system distributing information data to a user terminal apparatus via a communication line individually, which individually manages to each store information data encrypted with a prescribed key and the key in advance, distributes information data required from the user terminal apparatus in an encrypted state, requires to present medium proper identification information stored on an information storage medium having proper identification information to the user terminal apparatus, encrypts to distribute the key itself used for encrypting the information data by using the medium proper identification information presented in response to the request, decrypts the encrypted key by using the medium proper identification information on a side of the user terminal apparatus, and decrypts the encryption of the distributed information data with the decrypted key, the distribution center apparatus comprising:
A user terminal apparatus of an information distribution system which receives information data distributed from a distribution center apparatus via a communication line, wherein
A user terminal apparatus of an information distribution system which receives information data distributed from a distribution center apparatus via a communication line, wherein
An information storage medium comprising:
Dependencies are inferred from the claim text.