US Patent 7907221 Television device

A television device includes a reception device, a first decision unit, and a second decision unit. The reception device receives, from a broadcast signal of a system set, a channel which is tuned. The second decision unit, when it has been decided by the first decision unit that this channel for which tuning has been received is not registered in the channel map of the set broadcast signal, decides whether or not this channel is registered in the channel map of the broadcast signal of some other system. And, when it has been decided by the second decision unit that this channel for which tuning has been received is registered in the channel map of the broadcast signal of some other system, the reception device receives the channel for which tuning has been received from the broadcast signal of some other system.