Data transfer method and server computer system

• US 20050125413A1
• Filed: 07/15/2004
• Published: 06/09/2005
• Est. Priority Date: 12/08/2003
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Wakabayashi, Noboru
• Granted Patent: US 7,516,164 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/9577 Optimising the visualization of content, e.g. distillation of HTML documents
• CPC Class Codes: Y10S 707/913 Multimedia
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A server computer system generates, for data stored in a transmission source server, index information including a data identification number, a data type, information for the data such as copyright information and an address of a server whereat the data are stored, and transmits only the index information to a hand-held information terminal carried by the owner of the transmission source server, thereby, a data transfer is requested for transferring, to a transmission destination server, data indicating the index information from the hand-held information terminal to the transmission destination server in accordance with the index information held by the hand-held information terminal and an address of the transmission destination server.

Claims

1. A data transfer method used for a system including a first server computer, a second server computer, a first hand-held information terminal and a second hand-held information terminal, comprising the steps of:

generating identification information for data and index information indicating an address of the first server computer on a network and transmitting the index information to the first hand-held information terminal, by the first server computer;

receiving the index information and transmitting the received information to the second hand-held information terminal, by the first hand-held information terminal;

transmitting a request signal to the first server computer, for transmitting the data to the second server computer by the second hand-held information terminal in accordance with the received index information; and

transmitting the data to the second server computer by the first server computer in accordance with the request signal.

10. A data transfer method according to claim 1, in a case where the server computer system further includes a third server computer and a third hand-held information terminal, transmitting the received index information to the third hand-held information terminal by the first hand-held information terminal;

transmitting a request signal for transmitting the data to the third server computer to the first server computer by the third hand-held information terminal in accordance with the index information; and

transmitting the data to the third server computer by the first server computer in accordance with the request signal.

2. A server computer system storing data, comprising:

an index information management unit generating index information that includes identification information for the data and an address of a server computer on a network and storing the index information; and

a communication unit transmitting, to a first hand-held information terminal, the index information stored by the index information management unit, wherein

the communication unit transmits the data to other server computer when receiving a transfer request signal being added an address of the other server computer on the network from a second hand-held information terminal to be a destination of the index information in accordance with the index information transferred from the first hand-held information terminal.

3. A server computer system according to claim 2, wherein the index information includes number of transfer times of the index information and maximum allowable number of the transfer times of the index information.

4. A server computer system according to claim 3, wherein number of copy times for the data is limited after transmitting the data to the other server computer.

5. A server computer system according to claim 2, wherein the index information management unit generates the index information on requesting a transmission of the index information from the first hand-held information terminal.

6. A server computer system according to claim 2, wherein the index information management unit generates the index information for the data when storing the data.

7. A server computer system according to claim 2, wherein the communication unit includes a data list generating unit for analyzing the storing data and generating a data list after receiving a data list request signal from the first hand-held information terminal, and the communication unit transmitting the data list to the first hand-held information terminal.

8. A server computer system according to claim 2, further comprising, a data transfer unit which fails to transfer the data to another device by the communication unit in a case where copyright information is included in the data stored in the server computer system and indicates to inhibit for transferring the data.

9. A data transfer method using a server computer storing data, comprising the steps of:

transmitting index information to a first hand-held information terminal, the index information including identification information for the data and an address of the server computer on a network; and

transmitting the data to the other server computer when receiving a transfer request to the other server computer from a second hand-held information terminal to be a destination of the index information in accordance with the index information transferred from the first hand-held information terminal.