US Patent 7460184 Digital television broadcast signal receiver

In a digital TV broadcast signal receiver connected to a multi-directional antenna called smart antenna, when a TV broadcast signal of an optional channel becomes unreceivable for any reason, it makes possible to restart displaying an image on a screen of a monitor display device, quickly. The digital TV broadcast signal receiver previously sets a plurality of optimum signal receiving direction with respect to each receivable channel with an order of priority, and switches an effective signal receiving direction of a multi-directional antenna connected thereto to one of the optimum signal receiving directions of a channel chosen by a user corresponding to the order of priority, when the TV broadcast signal of the channel is unreceivable.