Multi-television channel selection method

The invention provides a power carrier-based home digital television system, which comprises a power carrier-based home gateway and digital televisions, wherein the home gateway is interconnected with the digital televisions through power lines. The invention also provides a multi-television channel selection method, which comprises the following steps of: connecting the home gateway and a plurality of digital televisions through the home power lines, and sending remote control signals emitted by a remote controller of any digital television to the home gateway through the digital television so as to remotely control the home gateway to select television programs. The method realizes centralized control of the home gateway on the digital televisions, supports multiple digital televisions to freely select different programs, and solves the problems of more connecting loops between the home gateway and the digital televisions and high transmission rate requirement. In addition, the method can support standard-d