Method and system for data distribution

• US 20030028660A1
• Filed: 06/11/2002
• Published: 02/06/2003
• Est. Priority Date: 08/02/2001
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Igawa, Masaru, Shibata, Koichi
• Application Number:
  US10/170,009
• Publication Number:
  US 20030028660A1
• Time in Patent Office: Days
• US Class Current: 709/231
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04L 67/01 Protocols

Abstract

A relay apparatus on a network includes an analysis section that analyzes multimedia contents transmitted from a contents provider. The relay apparatus temporarily stores contents identifiers, component information of the contents, and element data pointed by pointers of the component information, and creates a transmission sequence for transmitting the element data. A transmission section transmits the contents identifier, the contents component information and the element data according to the transmission sequence to a service provider. When the relay apparatus receives a request from a terminal or from a service provider even before the service provider completes registration of the entire multimedia contents, the relay apparatus or the service provider can start rendering multimedia transmission services to the terminal.

Claims

1. A data distribution method for a data distribution system that temporarily stores data received from outside and transmits the data to another data distribution system, the method comprising:

analyzing the data that is received from outside and temporarily stored;

dividing the data into component information and a plurality of element data;

setting a transmission sequence to the plurality of element data according to a specified rule; and

transmitting the component information to the other data distribution system, and transmitting the divided element data to the other data distribution system according to the transmission sequence.

2. A data distribution method according to claim 1, wherein the element data includes at least character data and image data, and the data is divided when a rate of the image data to the character data exceeds a predetermined value.

3. A data distribution method according to claim 1, wherein the element data includes a plurality of element data, and the transmission sequence is set according to predetermined priorities given to the element data.

4. A data distribution method according to claim 1, wherein, upon receiving a request for transmission of multimedia data from a terminal, when any element data among the element data retained at the data distribution system has been sent to the other data distribution system and deleted, the deleted element data is acquired from the other data distribution system, and the acquired element data and the element data that is retained without being deleted are transmitted to the terminal.

5. A data distribution method according to claim 1, wherein, upon receiving a request for transmission of multimedia data from a terminal, when the data distribution system retains all element data of the multimedia data, all the element data are transmitted to the terminal.

6. A data distribution method according to claim 1, wherein, upon receiving a request for transmission of multimedia data from a terminal, when the data distribution system retains all element data of the multimedia data, all the element data are transmitted to the terminal, and when any element data among the element data retained at the data distribution system has been sent to the other data distribution system and deleted, the deleted element data is acquired from the other data distribution system, and the acquired element data and the element data that is retained without being deleted are transmitted to the terminal.

8. A data distribution method according to claim 5, further comprising transmitting all of the element data to the terminal when all of the element data of the multimedia data are stored.

7. A data distribution method for a data distribution system that receives multimedia data, the method comprising:

receiving component information of the multimedia data;

sequentially receiving element data of the multimedia data;

receiving a request for distribution of the multimedia data from a terminal; and

when any element data among all of the element data of the multimedia data is not stored, transmitting already stored element data among the all of the element data to the terminal.

9. A data distribution system that temporarily stores data received from outside and transmits the data to another data distribution system, the data distribution system comprising:

a device that analyzes the data that is received from outside and temporarily stored;

a device that divides the multimedia data into component information and a plurality of element data;

a device that sets a transmission sequence to the plurality of element data according to a predetermined rule; and

a device that transmits the component information to the other data distribution system, and transmits the plurality of element data to the other data distribution system according to the transmission sequence.

10. A data distribution system according to claim 9, wherein the plurality of element data include at least character data and image data, and the data is divided when a rate of the image data to the character data exceeds a predetermined value.

11. A data distribution system according to claim 9, wherein the transmission sequence is set according to predetermined priorities given to the plurality of element data.

12. A data distribution system according to claim 9 further comprising:

a data storage device that stores the component information and the plurality of element data;

a data storage device that stores the transmission sequence for the plurality of element data; and

a device that receives a request from a terminal and transmits the component information and the plurality of element data stored in the data storage device to the terminal.

13. A computer readable recording media storing a program that enables a computer to perform at least the functions of:

analyzing multimedia data that is received from outside and temporarily stored;

dividing the multimedia data into component information and a plurality of element data; and

determining a transmission sequence to send out the plurality of element data according to a predetermined rule.

14. A computer readable recording media storing a program according to claim 13, wherein the plurality of element data include at least character data and image data, and the multimedia data is divided when a rate of the image data to the character data exceeds a predetermined value.

15. A computer readable recording media storing a program according to claim 13, wherein the transmission sequence is set according to predetermined priorities given to the plurality of element data.

16. A computer readable recording media storing a program according to claim 13, wherein the functions further comprise:

associating identifiers, the component information and the plurality of element data of the multimedia data;

storing the identifiers, the component information and the plurality of element data of the multimedia data;

associating the identifiers of the multimedia data and the plurality of element data arranged according to the transmission sequence;

adding flags indicating whether or not the corresponding element data have been transmitted; and

setting all of the flags at a value indicating that the corresponding element data have not yet been transmitted and storing the flags in a storage device.

17. A program that enables a computer to perform at least the functions of:

analyzing multimedia data that is received from outside and temporarily stored;

dividing the multimedia data into component information and a plurality of element data; and

determining a transmission sequence to send out the plurality of element data according to a predetermined rule.

18. A program according to claim 17, wherein the plurality of element data include at least character data and image data, and the multimedia data is divided when a rate of the image data to the character data exceeds a predetermined value.

19. A program according to claim 17, wherein the transmission sequence is set according to predetermined priorities given to the plurality of element data.

20. A program according to claim 17, wherein the functions further comprise:

associating identifiers, the component information and the plurality of element data of the multimedia data;

storing the identifiers, the component information and the plurality of element data of the multimedia data;

associating the identifiers of the multimedia data and the plurality of element data arranged according to the transmission sequence; and

setting all of the flags at a value indicating that the corresponding element data have not yet been transmitted and storing the flags in a storage device.