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Transmission method and system for video data, and its transmitting and receiving method and apparatus

A video data and video technology, applied in the field of video communication, can solve problems such as large-area mosaics or gray blocks, GOB decoding confusion, etc.

Active Publication Date: 2009-02-18
DATANG MOBILE COMM EQUIP CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to provide a video data transmission method, system, method and device for sending and receiving, to overcome the situation in the prior art that GOBs are divided by different AL-SDUs, and when a certain AL-SDU is lost Sometimes it will cause confusion in GOB decoding, and then there will be large-area mosaics or gray blocks.

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  • Transmission method and system for video data, and its transmitting and receiving method and apparatus
  • Transmission method and system for video data, and its transmitting and receiving method and apparatus
  • Transmission method and system for video data, and its transmitting and receiving method and apparatus

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Embodiment Construction

[0102] The present invention provides a video data transmission method. The sending end completely loads each GOB corresponding to a frame of video into the AL-SDU; the sending end sends the AL-SDU to the receiving end after multiplexing; the receiving end will After the received data is demultiplexed, the AL-SDU of the video data is separated, and the AL-SDU is checked, and the correct AL-SDU is put into the buffer queue. -SDU requires the sender to retransmit; the receiver processes the correct AL-SDU in the buffer queue and displays it.

[0103]Those skilled in the art know that the types of frame compression are divided into I frame, B frame and P frame. The I frame only compresses the current frame, while the B frame is compressed based on the difference between the previous frame and the next frame of the current frame, and the P frame is obtained based on the motion compensation of the I frame. Simply put, only the image information of the current frame is in the I fra...

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Abstract

The invention discloses a transmitting method of a video data, comprising: the transmitting end loads each GON corresponding to the frame video to the AL-SDU; the transmitting end transmits the compound AL-SDU to the receiving end; the receiving end separates the AL-SDU of the video data after receiving the compound data and checks the AL-SDU, putting the correct AL-SDU to the buffer array and re-transmitting the AL-SDU demand with the incorrect image head; the receiving end displays the correct AL-SDU in the buffer array. The invention also discloses a transmitting method, receiving method, transmitting system, transmitting device and the receiving device of the video data. The invention can avoid the situation that the AL-SDU segments the GOB and the confusion of the GOB code; so that the invention reduces the lost of the important data to reduce the situation of large area of mosaic or grey block for the receiving end.

Description

technical field [0001] The present invention relates to the technical field of video communication, in particular to a video data transmission method, system, and sending and receiving method and device. Background technique [0002] With the development of modern communication technology and business, people's demand for communication has changed from the initial single voice demand to the communication demand for video and audio. hotspot. [0003] For example, the H.324 / M international standard is one that can support real-time multimedia service applications including video and audio in a wireless circuit switching network. Several sub-protocol standards included in this standard are: multiplexing and separation (H.223) of voice, video, user data and control data, etc. [0004] The 3rd Generation Partnership Project (3rd Generation Partnership project, 3GPP) adopts H.324M as a standard for 3G network video transmission. Among them, H.263 can be used as a video coding s...

Claims

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Application Information

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IPC IPC(8): H04N7/64H04N19/89
Inventor 朱胜裘风光
Owner DATANG MOBILE COMM EQUIP CO LTD
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