For the kinds of digital set-top-box, the conversion device to support the digital broadcasting service, there are four of its kind in IPset-top-box, satellite set-top-box, cable set-top-box and ground wave set-top-box. The IP set-top-box uses the very fast speed internet (IP) network such as ADSL and VDSL to realize the two-way TV services to mutually reacting in one on one for TV and consumer, remote control of digital home appliance and operation of security device to be the model to grow int