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Implementation method of videophone system among IPTV set top boxes

A videophone system, network TV technology, applied in the direction of TV, transmission system, two-way working system, etc., can solve the limitations and other problems, and achieve the effect of perfect function, increased control function and good scalability

Inactive Publication Date: 2010-06-16
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this solution, users need basic conditions such as computers, cameras, broadband Internet access and certain computer operation knowledge, so it largely limits its user groups.

Method used

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  • Implementation method of videophone system among IPTV set top boxes
  • Implementation method of videophone system among IPTV set top boxes
  • Implementation method of videophone system among IPTV set top boxes

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Embodiment Construction

[0025] 1. System structure:

[0026] The present invention is research on videophone on P2P IPTV terminal. Its functional modules are generally composed of the following six parts: audio collection and playback module, audio codec module, video capture and display module, video codec module, system control module and network transmission module. like figure 1 shown.

[0027] Below we introduce each module in detail:

[0028] Audio collection and playback module: the voice collection and playback module is an essential component of the embedded video system. This module completes the audio signal acquisition, playback and other functions. It is mainly composed of low-power stereo codec chip TLV320AIC33 produced by TI. The chip has multiple input ports and multiple programmable output ports. The register-based power control module makes the system consume only 14mw when playing in the 48KHz DAC loop. Extremely low power consumption makes it especially suitable for embedde...

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Abstract

The invention relates to an implementation method of a videophone system among IPTV set top boxes, which is a method for developing the videophone system on IPTV set top boxes. The scheme mainly extends the value added service function of the IPTV set top boxes, and the depended hardware platform is DaVinci TMS320DM6446 which is oriented to the video developing field and provided by a TI company. The implementation method comprises the following steps: taking a DM6446DVEVM development kit provided by the TI company as a hardware platform; respectively collecting and capturing audio data and video data; carrying out video coding and decoding on the video data by a high-performance video coding and decoding technology H.264 of digital signal processing DSP; processing the audio data by a microprocessor ARM in a soft coding and decoding mode through directly calling a voice compressing standard G.711 coding and decoding algorithm; taking a user datagram protocol as a transmission layer protocol for the network transmission of the audio data and the video data; and carrying out real-time transport protocol packaging on an application layer.

Description

technical field [0001] The present invention is a method for developing a videophone system on an Internet TV (IPTV) set-top box. This solution is mainly to expand the value-added service function of the Internet TV set-top box. Vinci platform (DaVinci) TMS320DM6446. It belongs to the embedded application field. Background technique [0002] Video Phone (Video Phone) service is a multimedia communication service that integrates image and voice through the traditional telephone network, the Internet or a private video network to realize face-to-face real-time communication between people. Being able to see each other's scenes has developed rapidly in recent years in teleconferencing, distance teaching, and telemedicine. The current implementation of videophone is basically based on PC software, and provides videophone through IP network service. For this solution, users need basic conditions such as computers, cameras, broadband Internet access, and certain computer operat...

Claims

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Application Information

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IPC IPC(8): H04N7/14H04N7/26G06F3/048H04L29/06G06F9/44
Inventor 王汝传薛鹏韩志杰李致远吴敏支萌萌徐鹤邵星
Owner NANJING UNIV OF POSTS & TELECOMM
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