Method, apparatus and system for sending and receiving stream medium data

A technology of a data receiving device and a data sending method, which is applied in the direction of a digital transmission system, a device for providing special services by a sub-bureau, a transmission system, etc., and can solve problems such as inability to provide terminals, different streaming media service quality, etc., and achieve the effect of improving the playback quality

Inactive Publication Date: 2009-04-15
PEKING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a method, device and system for transmitting and receiving streaming media data, which solves the problem that in the existing streaming media data transmitting and receiving technology, different streaming media service quality cannot be provided for terminal heterogeneity and different network conditions The problem

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  • Method, apparatus and system for sending and receiving stream medium data
  • Method, apparatus and system for sending and receiving stream medium data
  • Method, apparatus and system for sending and receiving stream medium data

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Embodiment Construction

[0051] The main realization principles, specific implementation modes and corresponding beneficial effects that can be achieved of the technical solutions of the embodiments of the present invention will be described in detail below in conjunction with each accompanying drawing.

[0052] like figure 1 As shown, the main implementation principle flow of the streaming media data sending method provided by the embodiment of the present invention is as follows:

[0053] Step 11, the streaming media server performs layered coding on the streaming media data.

[0054] In the embodiment of the present invention, various streaming media data layered coding methods can be adopted, for example, Fine Granular Scalable Coding (FGS, Fine Granular Scalable) based on bit-plane coding, which provides fine-grained scalability. This encoding method usually generates two code streams: a base layer code stream and an enhancement layer code stream. The basic layer code stream is the most basic dat...

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Abstract

The invention discloses a method for transmitting and receiving streaming media data, a device and a system thereof. The method comprises the following steps: the hierarchically coded hierarchical coding data is dispersed into data segments according unit time length to be coded and transmitted in a way that hierarchical coding is carried out on the streaming media data in a streaming media server; a streaming media receiving node selects the received hierarchical data, wherein, the selected data segments corresponding to hierarchy received from the streaming media server, or the selected data segments corresponding to hierarchy received from other streaming media receiving nodes are combined according to the number of data segments, the hierarchy, and a sequence of playing time of the streaming media data, and the hierarchical coding data obtained by combination is decoded and played. Therefore, the streaming media receiving node can selectively receive different hierarchical data according to self capacity and / or network status of the node, and improve the playing quality of the streaming media by further acquiring data of an enhanced layer, on the premise that basic layer data is acquired to ensure the acquisition of basic playing quality.

Description

technical field [0001] The invention relates to streaming media encoding and playing technology, in particular to a streaming media data sending and receiving method, device and system. Background technique [0002] In order to solve the bottleneck problems encountered in system storage resources, computing resources and bandwidth resources in streaming media data services, in recent years, the industry has proposed the application of peer-to-peer network (P2P, Peer to Peer) technology in streaming media data services, through The direct interaction between nodes participating in the system realizes the sharing of information resources and services. [0003] The problem of transmitting streaming media data in an error-prone environment has always been widely valued. Especially in the peer-to-peer network environment, the heterogeneity of nodes brings fluctuations in network bandwidth and other resources; the addition and departure of nodes in the peer-to-peer network will c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18H04L12/56H04N21/63H04N21/647
Inventor 庞燕郭宗明
Owner PEKING UNIV
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