Data delivery system, server apparatus, reproducing apparatus, data delivery method, data playback method, storage medium, control, signal, and transmission data signal

A server apparatus for delivering data to a reproducing apparatus, comprising:

• encrypting means for encrypting data and outputting the resultant encrypted data;
• transmitting means for transmitting the encrypted data to the reproducing apparatus;
• recording means for recording, on a storage medium, a key used to decrypt the encrypted data;
• and
• judgment means for detecting unauthorized use of the data transmitted from the transmitting means, on the basis of information stored on the storage medium returned from the reproduction apparatus.

A reproducing apparatus to which encrypted data is transmitted from a predetermined server apparatus and to which a storage medium including a key stored thereon for use in decrypting the encrypted data is sent, the reproducing apparatus comprising:

• receiving means for receiving the encrypted data transmitted from the predetermined server apparatus;
• reading means for reading the key stored on the storage medium;
• decrypting means for decrypting the encrypted data received by the receiving means, using the key read by the reading means;
• reproducing means for reproducing the data decrypted by the decrypting means;
• and
• control means for controlling the reproduction of the data performed by the reproducing means in accordance with information stored on the storage medium.

A data delivery method comprising:

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data;
• a recording step for recording, on a storage medium, a key used to decrypt the encrypted data;
• a receiving step for receiving the encrypted data transmitted in the transmitting step;
• a reading step for reading the key stored on the storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a reproducing step for reproducing the data decrypted in the decrypting step;
• a control step for controlling the reproduction of the data performed in the reproducing step, in accordance with information stored on the storage medium;
• and
• a judgment step for detecting unauthorized use of the data, on the basis of information stored on the storage medium.

A method of controlling a server apparatus so as to deliver data from the server apparatus to a reproducing apparatus, comprising:

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data to the reproducing apparatus;
• a recording step for recording, on a storage medium, a key used to decrypt the encrypted data;
• and
• a judgment step for detecting unauthorized use of the data transmitted in the transmitting step, on the basis of information stored on the storage medium returned from the reproduction apparatus.

A method of controlling a reproducing apparatus to which encrypted data is transmitted from a predetermined server apparatus and to which a storage medium including a key stored thereon for use in decrypting the encrypted data is sent, the method comprising:

• a receiving step for receiving the encrypted data transmitted from the predetermined server apparatus;
• a reading step for reading the key stored on the storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a reproducing step for reproducing the data decrypted in the decrypting step;
• and
• a control step for controlling the reproduction of the data performed in the reproducing step in accordance with information stored on the storage medium.

A program storage medium including a processing program, stored thereon, for controlling a server apparatus to perform a process of delivering data from the server apparatus to a reproducing apparatus, the process comprising:

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data to the reproducing apparatus;
• a recording step for recording, on an information storage medium, a key used to decrypt the encrypted data;
• and
• a judgment step for detecting unauthorized use of the data transmitted in the transmitting step, on the basis of information stored on the information storage medium returned from the reproduction apparatus.

A program storage medium including a processing program, stored thereon, for controlling a reproducing apparatus, to which encrypted data is transmitted from a predetermined server apparatus and to which an information storage medium including a key stored thereon for use in decrypting the encrypted data is sent, so as to perform a process comprising

• a receiving step for receiving the encrypted data transmitted from the predetermined server apparatus;
• a reading step for reading the key stored on the information storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a reproducing step for reproducing the data decrypted in the decrypting step;
• and
• a control step for controlling the reproduction of the data performed in the reproducing step in accordance with information stored on the information storage medium.

A control signal for controlling a server apparatus to perform a process of delivering data from the server apparatus to a reproducing apparatus, the process comprising:

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data to the reproducing apparatus;
• a recording step for recording, on an information storage medium, a key used to decrypt the encrypted data;
• and
• a judgment step for detecting unauthorized use of the data transmitted in the transmitting step, on the basis of information stored on the information storage medium returned from the reproduction apparatus.

A control signal for controlling a reproducing apparatus, to which encrypted data is transmitted from a predetermined server apparatus and to which an information storage medium including a key stored thereon for use in decrypting the encrypted data is sent, so as to perform a process comprising:

• a receiving step for receiving the encrypted data transmitted from the predetermined server apparatus;
• a reading step for reading the key stored on the information storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a reproducing step for reproducing the data decrypted in the decrypting step;
• and
• a control step for controlling the reproduction of the data performed in the reproducing step in accordance with information stored on the information storage medium.

A data delivery method comprising:

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data;
• a recording step for recording, on a storage medium, a key used to decrypt the encrypted data;
• a receiving step for receiving the encrypted data transmitted from the predetermined server apparatus;
• a reading step for reading the key stored on the storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a controlling step for enabling or disabling reproduction of the data decrypted in the decrypting step, in accordance with the information recorded on the storage medium;
• a reproducing step for reproducing the decrypted data, in accordance with the control in the controlling step;
• and
• a judging step for detecting unauthorized use of the data, on the basis of information stored on the storage medium.

A method of delivering data to a reproducing apparatus, comprising:

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data;
• a recording step for recording, on a storage medium, a key used to decrypt the encrypted data;
• and
• a judging step for detecting unauthorized use of the data, on the basis of information stored on a storage medium returned from the reproducing apparatus.

A method of reproducing data by a reproducing apparatus to which encrypted data is transmitted from a predetermined server apparatus and to which a storage medium including a key stored thereon for use in decrypting the encrypted data is sent, the method comprising:

• a receiving step for receiving the encrypted data transmitted from the predetermined server apparatus;
• a reading step for reading the key stored on the storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a controlling step for enabling or disabling reproduction of the data decrypted in the decrypting step, in accordance with the information recorded on the storage medium;
• and
• a reproducing step for reproducing the decrypted data, in accordance with the control in the controlling step.

A storage medium including a processing program, stored thereon, for controlling a server apparatus to execute a data delivery process for delivering data to a reproducing apparatus, the processing program comprising:

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data;
• a recording step for recording, on a storage medium, a key used to decrypt the encrypted data;
• and
• a judging step for detecting unauthorized use of the data, on the basis of information stored on a storage medium returned from the reproducing apparatus.

A program storage medium including a processing program, stored thereon, for controlling a reproducing apparatus to which encrypted data is transmitted from a predetermined server apparatus and to which an information storage medium including a key stored thereon for use in decrypting the encrypted data is sent, the processing program serving to control the reproducing apparatus to perform a process of reproducing the data, the process comprising:

• a receiving step for receiving the encrypted data transmitted from the predetermined server apparatus;
• a reading step for reading the key stored on the information storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a controlling step for enabling or disabling reproduction of the data decrypted in the decrypting step, in accordance with the information recorded on the information storage medium;
• and
• a reproducing step for reproducing the decrypted data, in accordance with the control in the controlling step.

A control signal for controlling a server apparatus to perform a process of delivering data to a reproducing apparatus, the process comprising

• an encrypting step for encrypting data and outputting the resultant encrypted data;
• a transmitting step for transmitting the encrypted data;
• a recording step for recording, on a storage medium, a key used to decrypt the encrypted data;
• and
• a judging step for detecting unauthorized use of the data, on the basis of information stored on a storage medium returned from the reproducing apparatus.

A control signal for controlling a reproducing apparatus to which encrypted data is transmitted from a predetermined server apparatus and to which a storage medium including a key stored thereon for use in decrypting the encrypted data is sent, the control signal serving to control the reproducing apparatus to perform a process of reproducing the data, the process comprising:

• a receiving step for receiving the encrypted data transmitted from the predetermined server apparatus;
• a reading step for reading the key stored on the storage medium;
• a decrypting step for decrypting the encrypted data received in the receiving step, using the key read in the reading step;
• a controlling step for enabling or disabling reproduction of the data decrypted in the decrypting step, in accordance with the information recorded on the storage medium;
• and
• a reproducing step for reproducing the decrypted data, in accordance with the control in the controlling step.