Content delivery server and content delivery system having the same
First Claim
1. A server for file distribution connected to a user terminal through a communication network comprising:
- a file data memory having digital file data to be transmitted;
a program memory having a computer program managing and playing back said digital file data;
a management/playback program stored in said program memory requested from said user terminal; and
a transfer processing unit transferring said digital file data stored in said file data memory;
wherein said management/playback program performs a step of setting a storage space of said digital file data transferred from said file distribution server into a memory of said user terminal, a step of storing said digital file data converted to data group divided and spread by a setting rule in said storage space of said digital file data, a step of decoding said data group stored in said memory of said user terminal to said digital file data by said setting rule, and a step of playing back said decoded digital file data on said user terminal.
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Accused Products
Abstract
The present invention offers a file distribution system that can restrict the use of files within a certain limit. The system includes a file distribution server. The file distribution server 2 is set up so that it can be connected with user terminals via communication network 3. The server 2 consists of several units. The units included are: the file data memory 24 to store digital file data to distribute, the program memory 25 to store a computer program to manage and play back digital file data, and the transfer-processing unit 26 to transfer management/playback program and digital file data in response to the request from user terminals. The management/playback program carries out the following processes: making storage space on the user terminals to store digital file data, storing the distributed digital file data after converting it to divided-and-spread data group according to certain rules, restoring the stored converted-file data to original digital file data by re-converting the converted-file data according to the rules, and playing back the restored digital file data.
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Citations
10 Claims
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1. A server for file distribution connected to a user terminal through a communication network comprising:
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a file data memory having digital file data to be transmitted;
a program memory having a computer program managing and playing back said digital file data;
a management/playback program stored in said program memory requested from said user terminal; and
a transfer processing unit transferring said digital file data stored in said file data memory;
wherein said management/playback program performs a step of setting a storage space of said digital file data transferred from said file distribution server into a memory of said user terminal, a step of storing said digital file data converted to data group divided and spread by a setting rule in said storage space of said digital file data, a step of decoding said data group stored in said memory of said user terminal to said digital file data by said setting rule, and a step of playing back said decoded digital file data on said user terminal. - View Dependent Claims (2, 3, 4, 9, 10)
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5. A server for file distribution connected to a user terminal through a communication network comprising:
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a file data memory having digital file data to be transmitted;
a program memory having a computer program managing and playing back said digital file data;
a management/playback program stored in said program memory requested from said user terminal; and
a transfer processing unit transferring said digital file data stored in said file data memory;
wherein said transfer processing unit converting said digital file data requested from said user terminal into data groups divided and spread by a setting rule and transferring said converted digital file data to said user terminal, wherein said management/playback program performs a step of setting a storage space of said digital file data transferred from said file distribution server into a memory of said user terminal, a step of storing said converted digital file data in said setting storage space, a step of decoding said converted digital file data in said memory of said user terminal to said digital file data by said setting rule, and a step of playing back said decoded digital file data on said user terminal. - View Dependent Claims (6, 7, 8)
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Specification