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Method for transmitting data

A data transmission and data technology, applied in the field of computer communication, can solve the problems of difficult and large file data segmentation, difficult to complete the segmentation method, file data size limitation, etc., to facilitate transmission, improve throughput and Scalability, the effect of increasing the download rate

Inactive Publication Date: 2011-05-25
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the existing technology, file data is generally divided according to the size of the data block, and due to the limitation of the device memory size, the size of the file data will be limited, and it is difficult to divide larger file data into required sizes. data block
For the situation where precise positioning is required when the movie is played, the method of segmenting according to size is powerless
In addition, when it is necessary to clip the movie file to obtain the parts you need, it is difficult to complete the segmentation according to the size of the data block

Method used

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Embodiment Construction

[0035] The data transmission method of the present invention is mainly used to realize data transmission in a point-to-point P2P video-on-demand system. The P2P video-on-demand system includes a plurality of nodes, and the plurality of nodes are connected through P2P peer-to-peer for realizing data transmission. .

[0036] Such as figure 1 As shown, the P2P video-on-demand system specifically includes a metropolitan area network media system and three resident network media systems, wherein there may be multiple resident network media systems, but there is at least one. The front-end operation service system provides video services for the video-on-demand system, and the front-end operation service system includes an MPC (media processing center) and a media resource management module.

[0037] Described metropolitan area network media system comprises:

[0038] CMS (Center Media Server): Located in the metropolitan area P2P network of the CNGI (China Next Generation Interne...

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Abstract

The present invention discloses a method for transmitting data, being used in P2P video-on-demand transmission, including the following steps: A. to divide the data of the P2P video-on-demand system into a plurality of data block; B. to encrypt each data block after dividing; C. a data receiving end downloads various data block from various nodes of the P2P video-on-demand system, and to combine the downloaded data blocks into integrated data. Wherein, to divide the data or according to required size of the data block, or according to the duration of the data block, or according to the selective dividing position and the size of the data block or duration. And to construct information object with the corresponding information of data dividing and to transmit to a media resource managementmodule, for managing data. The method is flexible and credible.

Description

technical field [0001] The invention relates to a computer communication technology, in particular to a data transmission method in a P2P video-on-demand system. Background technique [0002] VOD (Video On Demand video on demand) is an interactive multimedia service provided on the Internet, which can provide a single access channel for residential and commercial users, so that they can order remote video programs. [0003] The traditional VOD (Video on Demand) adopts C / S (Client / Server) connection mode to provide on-demand (including VOD and time-shifted TV) services. Due to the limitation of I / O (server input / output) "bottleneck", a server can only support a limited number of concurrent streams (thousands of concurrent streams). To solve the problem of simultaneous viewing by hundreds of thousands or millions of users, not only a large number of servers but also extremely wide network bandwidth are required. The client / server model has become a "bottleneck" restricting t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/63H04L1/00H04L29/08H04L9/32
Inventor 王嵩郑烇李俊朱明赵兵选
Owner UNIV OF SCI & TECH OF CHINA