Disk buffering method in use for video on demand system of peer-to-peer network

A disk caching and video-on-demand technology, applied in the field of disk caching, can solve problems such as limited memory size, and achieve the effects of increasing the number of resources, reducing the number of requests, and increasing cached content

Inactive Publication Date: 2006-12-06
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiency of peer-to-peer network streaming media on-demand cache data volume, and provide a disk cache method for peer-to-peer network video-o

Method used

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  • Disk buffering method in use for video on demand system of peer-to-peer network
  • Disk buffering method in use for video on demand system of peer-to-peer network
  • Disk buffering method in use for video on demand system of peer-to-peer network

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[0044] machine name

[0045] PC1-10 are respectively referred to as node 1, node 2...node 10. Node 3 specifies c:\a.temp as its disk cache space on PC3, and its size is specified as 200M. The program divides the 200M space into 2048 slices on average, and the size of each slice is 200×1024÷2048=100K. After the program checks that there is data to be cached after an interval of 2 seconds, the data to be cached is divided into one second as the basic unit, and there is 1 standard data block. At this time, the disk cache space usage of node 3 is as follows Figure 4 As shown, 1-2042 disk slices have been used to cache media data, the standard data block length is 143KB, then search the disk cache space, found that there are two consecutive disk slices 2042 and 2043, the sum of their space length It is 200K, which is greater than the length of the standard data block, which is 143K. Therefore, the status of disk slices No. 2042 and 2043 is changed to used, and the stand...

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Abstract

In the invention, each node executes the following steps: 1) initializing the disc space; 2) formatting the disc space; 3) making check to decide if there is data to be buffered; 4) dividing the data to be buffered into normal data blocks; 5) selecting a proper sub-disc; 6) inserting the data to be buffered into the disc buffer queue; 7) deleting the buffer data already existing in the disc; 8) checking the buffer queue for writing into the disc to decide it is full; 11) deciding if the user quits the system.

Description

technical field [0001] The invention belongs to the technical field of streaming media on-demand, and in particular relates to a disk cache method used in a peer-to-peer (P2P) video-on-demand system. Background technique [0002] The application of streaming media technology has always been the main way to disseminate multimedia information on the Internet. With the increasing popularity of broadband networks, the attention paid to video-on-demand services is also increasing. [0003] The traditional video-on-demand mechanism stores a large amount of on-demand video stream data on a group of centrally managed video servers, and the video server is responsible for responding to each client's on-demand request. In this client-server system mode, the video server does all the work. When the number of on-demand users continues to increase, the video server will eventually reach the limit of its capabilities. In order to enhance the system capability, the common method is to ad...

Claims

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Application Information

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IPC IPC(8): H04N7/173G06F12/02H04N21/2312
Inventor 金海廖小飞殷江培程斌王浩周怡王福臣赵斗斗
Owner HUAZHONG UNIV OF SCI & TECH
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