Method for distributing low-bit-rate video streaming composite high definition graphic data and bandwidth of low-bit-rate video streaming composite high definition graphic data

A bandwidth allocation method and graphic data technology, which are applied in the field of low-bit-rate video stream composite high-definition graphic data transmission, can solve the problems of inability to realize high-definition video transmission, restrict the application function and application effect of maritime satellite communication, and achieve high practical value. Effect

Inactive Publication Date: 2014-03-19
HEFEI UNIV OF TECH +2
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AI Technical Summary

Problems solved by technology

It is impossible to realize high-definition video transmission under the existing bandwidth conditions
The limitation of low bit rate video greatly restricts the application function and application effect based on maritime satellite communication

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Under the condition of low bit rate, audio interaction, low bit rate video transmission and composite high-definition graphic data transmission are simultaneously completed. The transmission process is completed through reasonable allocation of bandwidth. The priority of audio interaction is the highest, and the bandwidth is controlled at the level of 4kbps~16kbps. The priority of low-bit-rate video stream transmission is second, and the frame rate is controlled below 25fps. The priority of composite high-definition graphic data transmission is the lowest. The frame rate is controlled at the level of 0.01 ~ 1fps. For each frame of the composite high-definition graphic data, identify the specified frame corresponding to the low bit rate video stream according to the time stamp, and keep the synchronization of the two types of data from this frame. Each frame of composite high-definition graphic data is divided into blocks, coded and compressed, transmitted, and displaye...

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Abstract

The invention relates to a method for distributing low-bit-rate video streaming composite high definition graphic data and bandwidth of the low-bit-rate video streaming composite high definition graphic data. Under the condition of the low bit rate, the transmission is completed through the bandwidth distribution, the priority of audio interaction is the highest, the priority of transmission of low-bit-rate video streaming is higher, and the priority of transmission of composite high definition graphic data is the lowest. Each frame of the composite high definition graphic data corresponds to the assigned frame of the low-bit-rate video streaming according to time stamp logos, and synchronization of two paths of data is kept from the frame. Each frame of the composite high definition graphic data is shown through blocking, coding compression, transmission and showing. Each of blocks covers low-bit-rate video frames synchronous with the blocks which are amplified to show corresponding positions according to position information after transmission is completed, and the composite process is reverted to a high definition image gradually. The method can guarantee audio interaction and low-bit-rate video and transmit the high definition graphic data synchronously under the low bandwidth condition.

Description

technical field [0001] The invention relates to a method for transmitting composite high-definition graphic data of low bit rate video streams, in particular to a method for bandwidth allocation and transmission in low bit rate. Background technique [0002] At present, the Explorer700 system of the fourth-generation satellite of INMARSAT is widely used. When the received signal strength is the best, the bandwidth can reach 128kbps, and the bandwidth ranges from 16kbps to 128kbps. In the process of maritime satellite communication, in order to maintain a stable receiving signal strength of the antenna, the static communication method is often adopted, that is, the antenna is fixed when it is aligned with the satellite to obtain a good signal strength. The antenna is connected to the individual soldier in a short-distance wireless manner. For example: Explorer 700, the signal strength can reach 54~57dBHZ in the static mode, and the data flow bandwidth can reach 64~128kbps, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/236H04N21/262H04N19/00
Inventor 林杰华潘子春王彩虹鲍红杰周立刘汉斐偶春生吴国凤徐诚
Owner HEFEI UNIV OF TECH
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