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Control method and system for adaptive adjustment of video data transmission

A video data transmission and self-adaptive adjustment technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as video data transmission data congestion

Active Publication Date: 2016-03-23
NANJING SKYWORTH INST OF INFORMATION TECH CO LTD
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Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide users with a control method and system for adaptive adjustment of video data transmission to overcome data congestion in the video data transmission process caused by network fluctuations in the prior art Defects

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  • Control method and system for adaptive adjustment of video data transmission

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] The present invention provides a control method for adaptive adjustment of video data transmission, such as figure 1 As shown, the method includes:

[0043] S1. The receiving end receives the receiving time difference between adjacent frames in the data packet and obtains the sending time difference between the adjacent frames when the data packet is sent by the sending end, and passes the receiving time difference and the sending time difference into kalman Filtering, predicting the delay time of the next data packet transmission through the kalman filtering.

[0044]In order t...

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Abstract

The invention provides a control method and system for adaptive adjustment of video data transmission. According to the control method and system, a receiving end forecasts the delay time for transmission of the next data packet through Kalman filtering, and provides a suggested sending code rate for a sending end; and meanwhile, the sending end combines sending code rates which are calculated according to a packet loss rate, the suggested sending code rate and a TFRC algorithm, so as to calculate an adjusted code rate for data packet sending. By adoption of the control method and system, the sending code rate of the next data packet is forecast through Kalman filtering, and the sending end dynamically adjusts the call quality under various adaptive network conditions according to the data receiving condition of the receiving end, that is, the image fluency can be improved under a good network condition and can be reduced under a poor network condition. Therefore, the purpose of real-time congestion control is fulfilled, and the probabilities of intermittence and other abnormal conditions are reduced.

Description

technical field [0001] The invention relates to the technical field of information transmission control, in particular to a control method and system for adaptive adjustment of video data transmission. Background technique [0002] Smart TV has occupied the mainstream of the market. While watching programs on the Internet, more and more people gradually pay attention to other diversified applications. Video chatting is one of them. The screen is large enough and the traffic is not restricted like mobile phones. . However, the current video chat technology on TV is not only limited by its own hardware processing capabilities, but also needs to face the impact of network fluctuations. Usually, a good video chat software needs to have the following capabilities: when the network condition is good, it needs to improve fluency. Speed, improve picture quality, make full use of high-quality and smooth bandwidth, reduce fluency and picture quality in poor network conditions, so as ...

Claims

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Application Information

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IPC IPC(8): H04N21/647
CPCH04N21/64769H04N21/64792
Inventor 方伟
Owner NANJING SKYWORTH INST OF INFORMATION TECH CO LTD
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