Method and apparatus for digital broadcast channel selection by frequency searching in a step-wise fashion

摘要

An 8VSB decoder detects whether or not a digital tuner can tune in to a broadcasting signal on a selected channel, and a channel selection frequency control portion shifts, when it is detected that the broadcasting signal on the selected channel cannot be tuned in to, PLL data to the high frequency side or the low frequency side and outputs the PLL data to the digital tuner.