When a digital broadcast is currently extracted and a switching direction instruction is accepted, determination is made as to which of a CH number (analog number) next to a currently extracted channel in the switching direction according to the order indicated in an analog CH map and a CH number (digital...http://www.google.es/patents/US7522546?utm_source=gb-gplus-sharePatente US7522546 - Broadcast receiver device, broadcast receiving set, and channel switching method
Broadcast receiver device, broadcast receiving set, and channel switching method
