Information processing apparatus
First Claim
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1. An information processing apparatus for performing content management, comprising:
- acquiring means which acquires content to be transferred to another information processing apparatus;
encryption means which encrypts the content acquired by said acquiring means;
transmitting means which transmits the encrypted content to the other information processing apparatus;
receiving means which receives, from the other information processing apparatus, a computation value computed based on the content transmitted by said transmitting means; and
management means which, based on the computation value received by said receiving means, manages the content.
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Abstract
The present invention enables management of the copyright of content to which identification information is not added. An arithmetical unit 206 computes a hash value based on the data of a portion of content data recorded in an MD 209, and transmits the value from an input/output unit 201 to a personal computer. Based on the hash value, the personal computer identifies the content recorded in the MD 209, and performs management based on the display information of check-in and check-out of the content. The present invention can be applied to personal computers.
31 Citations
22 Claims
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1. An information processing apparatus for performing content management, comprising:
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acquiring means which acquires content to be transferred to another information processing apparatus;
encryption means which encrypts the content acquired by said acquiring means;
transmitting means which transmits the encrypted content to the other information processing apparatus;
receiving means which receives, from the other information processing apparatus, a computation value computed based on the content transmitted by said transmitting means; and
management means which, based on the computation value received by said receiving means, manages the content. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An information processing method for an information processing apparatus which performs content management, including:
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an acquiring step which acquires content to be transferred to another information processing apparatus;
an encryption step which encrypts the content acquired in said acquiring step;
a transmitting step which transmits the encrypted content to the other information processing apparatus;
a receiving step which receives, from the other information processing apparatus, a computation value computed based on the content transmitted in said transmitting step; and
a management step which, based on the computation value received in said receiving step, manages the content.
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9. A program storage medium storing a computer-readable program for an information processing apparatus which performs content management, the program including:
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an acquiring step which acquires content to be transferred to another information processing apparatus;
an encryption step which encrypts the content acquired in said acquiring step;
a transmitting step which transmits the encrypted content to the other information processing apparatus;
a receiving step which receives, from the other information processing apparatus, a computation value computed based on the content transmitted in said transmitting step; and
a management step which, based on the computation value received in said receiving step, manages the content.
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10. A program for causing a computer which controls an information processing apparatus for performing content management to execute:
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an acquiring step which acquires content to be transferred to another information processing apparatus;
an encryption step which encrypts the content acquired in said acquiring step;
a transmitting step which transmits the encrypted content to the other information processing apparatus;
a receiving step which receives, from the other information processing apparatus, a computation value computed based on the content transmitted in said transmitting step; and
a management step which, based on the computation value received in said receiving step, manages the content.
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11. An information processing apparatus using content, comprising:
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acquiring means which acquires content transferred from another information processing apparatus;
computing means which, based on the content acquired by said acquiring means, performs predetermined computation;
transmitting means which transmits, to the other information processing apparatus, the computation value computed by said computing means;
receiving means which, based on the computation value transmitted by said transmitting means, receives management information for managing the content which is transmitted from the other information processing apparatus; and
management means which, based on the management information received by said receiving means, manages the content. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An information processing method for an information processing apparatus using content, including:
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an acquiring step which acquires content transferred from another information processing apparatus;
a computing step which, based on the content acquired in said acquiring step, performs predetermined computation;
a transmitting step which transmits, to the other information processing apparatus, the computation value computed in said computing step;
a receiving step which, based on the computation value transmitted in said transmitting step, receives management information for managing the content which is transmitted from the other information processing apparatus; and
a management step which, based on the management information received in said receiving step, manages the content.
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20. A program storage medium storing a program for an information processing apparatus using content, said program including:
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an acquiring step which acquires content transferred from another information processing apparatus;
a computing step which, based on the content acquired in said acquiring step, performs predetermined computation;
a transmitting step which transmits, to the other information processing apparatus, the computation value computed in said computing step;
a receiving step which, based on the computation value transmitted in said transmitting step, receives management information for managing the content which is transmitted from the other information processing apparatus; and
a management step which, based on the management information received in said receiving step, manages the content.
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21. A program for a computer which controls an information processing apparatus using content, said program causing the computer to execute:
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an acquiring step which acquires content transferred from another information processing apparatus;
a computing step which, based on the content acquired in said acquiring step, performs predetermined computation;
a transmitting step which transmits, to the other information processing apparatus, the computation value computed in said computing step;
a receiving step which, based on the computation value transmitted in said transmitting step, receives management information for managing the content which is transmitted from the other information processing apparatus; and
a management step which, based on the management information received in said receiving step, manages the content.
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22. An information processing system comprising a first information processing apparatus for managing content and a second information processing apparatus using the content, wherein:
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said first information processing apparatus comprises;
first acquiring means which acquires content to be transferred to said second information processing apparatus;
encryption means which encrypts the content acquired by said acquiring means;
first transmitting means which transmits the encrypted content to said second information processing apparatus;
first receiving means which, from said second information processing apparatus, a computation value computed based on the content transmitted by said first transmitting means;
first management means which, based on the computation value received by said first receiving means, manages the content; and
generating means which generates management information based on the computation value received by said first receiving means and transmits the management information to said second information processing apparatus; and
said second information processing apparatus comprises;
second acquiring means which acquires content transferred from said first information processing apparatus;
computing means which, based on the content acquired by said second acquiring means, performs predetermined computation;
second transmitting means which transmits, to said first information processing apparatus, the computation value computed by said computing means;
second receiving means which, based on the computation value transmitted by said second transmitting means, management information for managing the content which is transmitted from said first information processing apparatus; and
second management means which, based on the management information received by said second receiving means, manages the content.
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Specification