Data receiving and transmitting methods and devices and data transmission system

A data receiving method, technology of media data, applied in digital transmission system, transmission system, using return channel for error prevention/detection, etc.

Inactive Publication Date: 2010-02-24
深圳智衡技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a data receiving and sending method, device and data transmission system, which solves the problem that the reliable processing of data packet loss cannot be realized while reasonably occupying network resources

Method used

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  • Data receiving and transmitting methods and devices and data transmission system
  • Data receiving and transmitting methods and devices and data transmission system
  • Data receiving and transmitting methods and devices and data transmission system

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Embodiment Construction

[0044] In order to solve the problem that the reliable processing of data packet loss cannot be realized while reasonably occupying network resources, the embodiment of the present invention provides a method for receiving and sending data, which is based on the UDP transmission mode, using this method in the streaming media server The process of completing data transmission between the client and the client is as follows: figure 1 shown, including:

[0045] Step 101, the streaming media server sends media data packets to the client, and performs media buffering on the media data packets while sending the media data packets;

[0046] In this step, the streaming media server sends the media data packet, including both the media packet and the FEC packet of the media packet. When the streaming media server sends a media data packet, it generates a corresponding FEC packet for the media packets in the media data packet.

[0047] In the embodiment of the present invention, the F...

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Abstract

The invention discloses data receiving and transmitting methods and devices and a data transmission system, relates to the field of communications and solves the problem of incapable realization of the reliable processing on the data packet missing while reasonably occupying the network resources. The data receiving method comprises the following steps: after receiving a media data packet, judging whether the missing media packet can be restored or not, if so, restoring the missing media packet, otherwise, transmitting the packet missing information to a streaming media server and requesting the streaming media server to retransmit the missing media packet. The technical scheme is suitable for IPTV services.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data receiving and sending method, device and data transmission system. Background technique [0002] In the IPTV service, the transmission quality of media data from the streaming media server to the set-top box directly affects the user's video viewing effect. If the media data is lost during the transmission process, the video picture will be paused or mosaic. How to ensure the quality of media transmission and provide users with high-quality video viewing experience is a key technical issue in the IPTV field. [0003] In the IPTV system, packet loss is generally processed by retransmission or FEC (Forward Error Correction) technology. The retransmission technology is to resend the lost data packets according to the packet loss information fed back by the client after the client feeds back the packet loss information; the FEC technology is to reconstruct the lost data pac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/18
Inventor 周茂林黄宇轩孔繁夫
Owner 深圳智衡技术有限公司
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