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Android system-based 3G video telephone system and realizing method thereof

A video phone and video technology, applied in two-way working systems, electrical components, wireless communication, etc., can solve the problems of difficulty in development and maintenance, unknown maturity, unrealized part of Java local calls in video phones, etc.

Active Publication Date: 2015-04-15
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the 3G-324M protocol stack provided by PV2Way is an open source code with unknown maturity, and it is difficult to develop and maintain; secondly, PV2Way only simulates the The sending and receiving of data does not really communicate with the 3G wireless communication module; third, the input and output methods of PV2Way are to read and write video files, and the video phone needs to send the video data collected by the camera in real time to the peer end, and will receive The video data of the opposite end is sent to the screen for display
In addition, applications, Java classes, Java Native Invocation (JNI), native frameworks, services, etc. for video telephony have not yet been implemented and need to be improved

Method used

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  • Android system-based 3G video telephone system and realizing method thereof
  • Android system-based 3G video telephone system and realizing method thereof
  • Android system-based 3G video telephone system and realizing method thereof

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Embodiment Construction

[0057] The present invention selects the ARM chip authorized by the British ARM company as the main control chip, and realizes the video phone function together with the 3G wireless communication module integrating the 3G-324M protocol stack. The system structure is as follows figure 1 shown. In the present invention, the ARM chip runs the Android system and is responsible for video collection, codec, and playback, while the 3G wireless communication module completes the work of 3G-324M protocol stack and audio collection, codec, and playback. On the downlink path, the 3G-324M protocol stack obtains and analyzes the 3G-324M protocol data packets from the network, the audio data is decoded and played by the 3G wireless communication module, and the video data is sent to the ARM chip for processing and finally sent to the screen for display; on the uplink path, The video encoding data of the ARM chip and the audio encoding data of the 3G wireless communication module are package...

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Abstract

The invention discloses an Android system-based 3G video telephone system and a realizing method thereof. The Android system-based 3G video telephone system comprises an ARM chip as a main control chip and a 3G wireless communication module integrating a 3G-324M protocol stack, wherein the ARM chip is communicated with the 3G wireless communication module in a USB-to- serial port manner, the ARM chip operates an Android system and is in charge of acquisition, coding and decoding, and broadcasting of video; and the 3G wireless communication module completes works of acquisition, coding and decoding, and broadcasting of the 3G-324M protocol stack and the video. On the basis of using a matured 3G wireless communication module with the 3G-324M protocol, a system architecture and a software frame of a 3G video telephone are designed, a state machine of PV2Way is optimized, various interfaces of the PV2Way are perfected, and a 3G video telephone function is realized on an Android system.

Description

【Technical field】 [0001] The invention relates to a system and a realization method of a 3G video phone based on an Android system. 【Background technique】 [0002] The 3G video phone uses the 3G-324M protocol based on Circuit Switching (CS). The 3G-324M protocol is a standard system formulated by the 3GPP organization, which can provide high enough communication quality for various delay-sensitive applications. [0003] The 3G-324M protocol includes the following sub-protocol standards: voice coding standards (3GPP-AMR, G.723.1), video coding standards (H.263, MPEG-4, H.261), data coding standards (V.14, LAPM (Link Access Procedure for Modems)), multiplexing and separation standard (H.223) and call control standard (H.245 version 3 and above). Among them, H.223 has formulated the multiplexing application standard of multiple audio and video signals in a single mobile communication channel, and H.245 has formulated the message control exchange standard at each stage of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/14H04W88/02
Inventor 陈屴姜明俊彭华成
Owner FUZHOU ROCKCHIP SEMICON