Patent ID: 7468762
Filing Date: 2008-12-23
Classification: H04N

Abstract:
1. A digital/analog TV receiver having a broadcasting signal receiver for receiving broadcasting signals of both ground wave and cable wave which are transmitted at corresponding frequencies assigned to a given broadcast service channel and a decoder for reconstructing an image signal from image data in the broadcasting signal received by the broadcasting signal receiver for displaying images of the image signal on a display connected to the digital/analog TV receiver whereby a process of full-range scanning over a channel signal can be performed at high speed, comprising: a controller which carries out the process of full-range scanning to automatically specify the channel of the broadcasting signal, the process including a transmission route examining step of detecting a receipt of a digital broadcasting signal of the ground wave by the broadcasting signal receiver and automatically judging from a result of the detection whether the broadcasting signal is received from a ground wave transmission route or a cable wave transmission route and a channel examining step of detecting a receipt of the broadcasting signal from the transmission route determined at the transmission route examining step and automatically specifying from a result of the detection the channel of the broadcasting signal received from the transmission route; and a memory for holding a channel map where the channel of each broadcasting signal specified by the full-range scanning process of the controller is stored.