Code rate control method of screen coding

A code rate control and encoding technology, applied in the field of screen coding code rate control, can solve the problems of large fluctuation range of code rate, insufficient adaptability, no code rate control scheme, etc., and achieve the effect of improving reliability

Inactive Publication Date: 2010-02-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

This technology does not propose a code rate control scheme corresponding to this method. In practical applications, the code rate fluctuates greatly, so this technology is not adaptable to network conditions.

Method used

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  • Code rate control method of screen coding
  • Code rate control method of screen coding

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Embodiment Construction

[0041]The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0042] Such as figure 1 As shown, this embodiment is implemented through the process shown in the flowchart, including the following steps:

[0043] Step 1, use the computer screen to encode, and set the upper limit of the code rate.

[0044] Step 2, according to the determined frame rate, use the method of step 1 to encode the screen information, and perform block-time-sharing code rate control, express the encoded information in the form of slices, and send the interval time between each frame to the receiver Send a slice.

[0045] In step three, the receiver rece...

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Abstract

The invention discloses a code rate control method of screen coding, belonging to the technical field of telecommunications. The method comprises the following steps: 1. using a computer screen to code, and setting a code rate upper limit; 2. according to a defined frame rate, using the method of the step 1 to code screen information, controlling the code rate by partitioning and time division, displaying the coded information in the form of sheet, and sending a sheet to a receiving part by each frame at intervals; 3. successively receiving each sheet by the receiving part, and performing screen coding corresponding to step 1. With the method of code rate control of partitioning and time division, the invention can confine data amount at any time to be below the upper limit of a fixed coderate so as to improve the reliability of network transmission under the condition of bigger code rate changing range. Meanwhile, the invention does not affect the resolution ratio of a screen image coded with various screen coding methods.

Description

technical field [0001] The present invention relates to a control method in the technical field of telecommunications, in particular to a code rate control method for screen coding. Background technique [0002] In computer remote network teaching, monitoring system, network conference, etc., computer screen image transmission is an important link. Due to the complexity of the screen image, the screen image has a high demand for network bandwidth, and is characterized by instability and a wide range of bit rate changes, which puts great pressure on network transmission. Bit rate control refers to the technical means of limiting the bit rate of the compressed media stream below the specified rate, which is widely used in video coding. In screen encoding, there is also a need for rate control, which can improve the adaptability to various network conditions and improve the performance of the above-mentioned application fields in terms of screen image transmission. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/26H04N19/146
Inventor 鲁晨平谢伟凯张智强
Owner SHANGHAI JIAO TONG UNIV
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