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发明申请
US20050057644A1 Video telephone integrating public-switch telephone network and asymmetric digital subscriber line 失效
集成公共电话网络和非对称数字用户线的视频电话

  • 专利标题： Video telephone integrating public-switch telephone network and asymmetric digital subscriber line
  • 专利标题（中）： 集成公共电话网络和非对称数字用户线的视频电话
  • 申请号： US10660500
    申请日： 2003-09-12
  • 公开(公告)号： US20050057644A1
    公开(公告)日： 2005-03-17
  • 发明人: Chen-Su Huang
  • 申请人： Chen-Su Huang
  • 主分类号： H04L12/66
  • IPC分类号： H04L12/66 ;  H04N7/14 ;  H04N7/15
Video telephone integrating public-switch telephone network and asymmetric digital subscriber line
摘要：
The invention includes a telephone using the PSTN, a control module, an ADSL module, and an access and display unit. Using the above, conventional telephone lines are employed for providing a video telephone capable of bidirectional video and audio transmissions. The video telephone is connected with the PSTN, and under circumstances that a receiving party and a calling party are simultaneously using the video telephone, when a receiving party user dials telephone number of the receiving party where by the control module unit is activated to send a signal. Via the PSTN lines, an Internet protocol A or B obtained by the ADSL modules unit is sent to the control module unit of the receiving party or the calling party. The two parties are connected using the IPs sent through the PSTN, and a high frequency band of the ADSL is utilized for transmitting video information.
摘要（中）：

本发明包括使用PSTN的电话，控制模块，ADSL模块以及访问和显示单元。 使用上述方式，常规电话线路用于提供能够进行双向视频和音频传输的视频电话。 视频电话与PSTN连接，在接收方和主叫方同时使用视频电话的情况下，当接收方用户拨打由控制模块单元激活的接收方的电话号码以发送 信号。 通过PSTN线路，由ADSL模块单元获得的因特网协议A或B被发送到接收方或主叫方的控制模块单元。 双方使用通过PSTN发送的IP连接，并且利用ADSL的高频带来传输视频信息。

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