Patent ID: 7715566
Filing Date: 2010-05-11
Classification: H04B,H04H,H04N

Abstract:
1. An apparatus to automatically compensate audio signals of an analog broadcast and a digital broadcast in a broadcast receiving device to receive a digital broadcast channel and a corresponding analog broadcast channel over which the same contents are broadcasted, the apparatus comprising: an analog demodulating unit to demodulate an analog audio signal of a tuned analog broadcast channel; a digital demodulating unit to demodulate a digital audio signal of a tuned digital broadcast channel; a switching unit to receive the demodulated analog audio signal and the demodulated digital audio signal from the analog demodulating unit and the digital demodulating unit, respectively, and to selectively output one of the received audio signals; an audio amplifying unit to receive the selective output audio signal from the switching unit and to amplify the received audio signal according to a predetermined amplification degree; and a central processing unit to control the switching unit to selectively output the audio signal of the digital demodulating unit and to control an amplification degree of the audio amplifying unit as the digital broadcast channel is tuned, to allow the amplified audio signal to have the same magnitude as when the corresponding analog broadcast channel is tuned.