Video transmission system of mobile phone

A transmission system, mobile phone video technology, applied in the transmission system, digital video signal modification, TV, etc., can solve the problems that mobile phone video transmission cannot be realized, and achieve the effect of mobile phone video transmission and simple codec

CN101834854AInactive Publication Date: 2010-09-15BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-09-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a video transmission system of a mobile phone and belongs to the technical field of mobile phone communication. The system comprises two smart mobile phones and a PC serving as a service terminal. The network connection among the mobile phones and the PC adopts a TCP / IP protocol; and the PC serving as a middle transcode server receives information of a transmitting terminal mobile phone, and transcodes and transmits the transcoded information to a receiving terminal mobile phone. When encoding at the transmitting terminal, the video transmission system adopts distributed video coding and transcodes through the middle transcode server; and the video transmission system performs simple MPEG or H.26x decoding at the receiving terminal. Both the two smart mobile phones are Windows Mobile operation systems; and the client adopts DirectShow technology as a basic frame tool for capturing, processing and playing back video stream. The video transmission system combines the advantages of the traditional video encoding and the distributed video coding and can simply encode and decode at an equipment terminal.
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Description

technical field

[0001] The invention belongs to the technical field of mobile phone communication, and in particular relates to a mobile phone video transmission system. Background technique

[0002] Distributed Video Coding (Distributed Video Coding) is a novel video coding method. It is just the opposite of traditional video coding. It has the characteristics of simple calculation during encoding and complex calculation during decoding. It is a successful application of Distributed Source Coding (Distributed Source Coding) in video coding. When encoding, a video is artificially divided into multiple sources (for example, video is divided into odd frame sequences and even frame sequences), and each source is independently encoded, that is, distributed source coding. However, joint encoding is performed during decoding, that is, the correlation existing between the two information sources is utilized during decoding. It can be seen that this novel encoding and decoding met...

Examples

Embodiment Construction

[0009] The present invention will be further described below in conjunction with the accompanying drawings.

[0010] Such as figure 1 As shown, the system of the present invention includes two smart phones, one of which is used as a transmitter to capture video information; the other is used as a receiver to play video; a PC is added between the two smart phones, and the connection between the three The wireless network connection adopts the TCP / IP protocol, and applies the client / server mode, that is, the two smart phones are the clients, and the PC is the server; Transcode, and finally send to the receiving end mobile phone. Distributed video coding is used for encoding at the transmitting end, transcoding is performed through an intermediate transcoding server, and simple MPEG or H.26x decoding is performed at the receiving end. Both smart phones are Windows Mobile operating systems, and the present invention adopts DirectShow technology as a basic frame tool for capturin...