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Your home is your world and only yours, so get the power to choose who comes in. Video phones are known for enabling both video and audio communications between users over a commonly connected telephone line. Video phone systems are a communication terminal equipment simultaneously executing an audio communication and a video communication through a telephone line. The Video Door Phone System is an digitized system. It consists of non-netwoking door master station, various coded video substations, floor distributors, and power supply units. The system features reliable quality, easy installation, simple operation while integrated with hi-tech digital system.
A video telephone system is usually provided with a video signal coder/decoder (CODEC) which encodes an input video signal to obtain a signal or decodes such signal into an image signal. A voice signal CODEC encodes an input voice signal to obtain a signal or decodes such signal into a voice signal. The data coded by the video signal and voice signal CODECs are multiplexed and the data is then transmitted as data to a distant video telephone system.
A video telephone is operated, unlike the ordinary telephone set, by receiving its power from an external power source. The video telephone has high power consumption because the video telephone is provided with a monitor, camera and codec which require high speed encoding operations. Some video phones are widely used for home and office buildings for identifying visitors outside the door. When a visitor presses a bell button located at the door, a camera installed outside the door captures an image of the visitor, and the video image is transmitted to the video phone installed inside the house. |
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