Network camera is a combination of traditional camera and network technology produced a new generation of cameras, it can be transmitted to the other side of the earth image through the network, and the remote viewer does not need any professional software, as long as the standard web browser (such as Microsoft IE or Netscape) to monitor the image. Network camera usually consists of lens, image, sound sensor, A/D converter, image, voice, controller, network server, external alarm, control interface and other parts.