Patent ID: 7876383

Claim:
A digital broadcasting receiver comprising: a RF switch to divide an entire channel range of an input signal having at least one of an air and a cable signals into at least two channel ranges; at least two channel searching parts to search each channel range distributed from the RF switch for a valid channel by checking in sequence from a lowest channel to a highest channel within the each channel range, and to determine whether one of a digital signal and an analog signal is received; a memory to record information on the valid channel through which one of the digital signal and the analog signal is received in the entire channel range of the input signal; and a CPU to control the at least two channel searching parts in parallel to search each distributed channel range, and to determine whether the channel to receive the input signal is the valid channel if the channel searching parts determine that one of the air, cable, digital, and analog signals is received and to record the valid channel into the memory.