A navigation interface display system generates a navigation element that organizes television programming data in an easy-to-use manner. A subset of elements of the estimate are suppressed to obtain a suppressed estimate of the channel. When a load shutoff is recognized, a switch is controlled to be transmissive so that energy produced by the load shutoff is stored in an energy reservoir. The multiple connections between the multiple leads provide connectivity between circuit nodes on the electronic circuitry and pads disposed on a planar surface of the electronic circuit package. The first data acquiring section generates first data using the first propagation estimation value.