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Flow control method of video image data

A technology of video image and image data, applied in the field of communication, can solve the problems of high hardware cost, reduction, and inability to guarantee the quality of video communication, and achieve the effect of reducing complexity and simplifying the flow control process

Inactive Publication Date: 2008-09-24
北京泰得思达科技发展有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The flow control scheme works throughout the entire video communication process, so even if the video communication quality recovers at a certain moment, it will degrade again due to the impact of flow control
Therefore, using the above-mentioned existing flow control scheme, it is impossible to guarantee the quality of video communication during the entire video communication process
[0005] In addition, the flow control scheme of the above-mentioned prior art has relatively high complexity
Since the adjustment of the quantitative index is based on the feedback principle, in order to obtain a more accurate feedback coefficient, a large number of feedback calculations are introduced in the adjustment process, especially a large number of floating-point operations are introduced. Therefore, the implementation of this scheme requires high hardware cost

Method used

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  • Flow control method of video image data

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the present invention clearer, the implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings:

[0015] This embodiment provides a flow control method for video image data.

[0016] see figure 1 , the method includes the following steps:

[0017] Step 101, acquire the space of the sending buffer unit.

[0018] Since the data in the sending buffer unit is always sent out at a certain set rate. Therefore, after entering the timing service each time, there will always be remaining space in the sending buffer unit, so firstly calculate the remaining space of the sending buffer unit, and obtain the remaining space information of the sending buffer unit. Proceed to step 102.

[0019] Step 102 judges whether there is data in the encoded data buffer unit?

[0020] After obtaining the remaining space information of the sending buffer unit,...

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Abstract

The invention discloses a flow control method for video image data, which includes: the data are cached and output, and the start of a data encoder is controlled according to the cached data information. With the flow control method for the video image data of the invention used, the complexity of the flow control proposal of the video image data can be reduced, and the stable video image transmission with high quality can be provided for users.

Description

technical field [0001] The invention relates to the communication field, in particular to a flow control method for video image data. Background technique [0002] In the prior art, before the video image data is encoded, the entire video image data is divided into several data blocks with a size of 16×16 pixels through a video compression algorithm. Before starting to encode a frame of video image data, according to the bandwidth and the encoding situation of the previous frame of video image data, the feedback coefficient used for flow control in the encoding process is initialized to obtain the feedback coefficient of the current frame of video image data initial value. [0003] Then, according to the initial value of the feedback coefficient obtained above, the current bandwidth information and the number of data blocks remaining in the current frame of video image data, the quantization index used when encoding the current data block is determined, and the data is real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/26
Inventor 任忠宇鲁现辉
Owner 北京泰得思达科技发展有限公司