Implementation method for cross-platform videophone system between set-top box and computer

A technology of videophone system and implementation method, which is applied in the field of videophone system, can solve limitations and other problems, and achieve the effect of beautiful interface, powerful function and simple operation

Inactive Publication Date: 2010-04-28
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this solution, users on both sides of the communication must have basic conditions such as computers, broadband Internet access, and certain computer operation knowledge, thus limiting its user groups to a certain extent.

Method used

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  • Implementation method for cross-platform videophone system between set-top box and computer
  • Implementation method for cross-platform videophone system between set-top box and computer
  • Implementation method for cross-platform videophone system between set-top box and computer

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Embodiment Construction

[0030] figure 1 It is the overall flowchart of the videophone system. First turn on the audio and video equipment, and then collect the original audio and video data from the equipment. After compression and encoding, they are packaged into data packets and sent out. The process of data reception is roughly the opposite. After the received data is decoded, the audio output is performed separately. and video display.

[0031] figure 2 It is a detailed program flow chart on the PC side. First, initialize the audio and video codec and open various audio and video devices. Then for audio, first create audio-related threads (audio input, output, etc. threads) and allocate buffers for recording. After the recording starts, the encoding function is called for compression and encoding every time a frame is captured, and then sent out. For video, the collected video frames are stored in a structure, and then compressed and transmitted in the callback function. The Socket thread is...

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Abstract

The invention relates to an implementation method for a cross-platform videophone system between a set-top box and a computer, which adopts a UDP protocol-based socket to implement cross-platform communication. In the aspect of audio / video coder and decoder standards, G.711 audio coding arithmetic and H.264 video coding arithmetic which are supported by the set-top box are adopted, and a multithreading design is adopted so as to meet the requirement of the system on real time well. The system comprises five principal parts, namely audio / video input, audio / video compression, cross-platform network transmission, audio / video output and a user interface. Compared with videophone software among PCs which is popular in the current market, the system has the characteristics of novelty, dexterity, easy expandability, commonality and the like, and has the excellent market prospect.

Description

technical field [0001] The present invention is a videophone system for audio and video chat between a PC (Personal Computer) and a Set Top Box (Set Top Box). The audio adopts the G.711 encoding algorithm, the video adopts the H.264 encoding algorithm, and uses (User Datagram Protocol) socket to achieve cross-platform data communication, which belongs to the cross field of embedded system and streaming media technology. Background technique [0002] The videophone service is a multimedia communication service that realizes voice, image, data and other information exchanges symmetrically and in real time through the traditional telephone network, the Internet or a private video network. Although videophones have been around for several years, they have not been widely used due to factors such as price and performance. However, in recent years, with the development of image coding technology and the increasing popularity of broadband IP (Internet Protocol) networks, videophon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/14H04N7/26H04L12/28
Inventor 王汝传赵玉雪韩志杰李致远李玲娟吴敏
Owner NANJING UNIV OF POSTS & TELECOMM
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