Audio/video device having a volume control function for an external audio reproduction unit by using volume control buttons of a remote controller and volume control method therefor

Abstract

An audio/video (A/V) device having a volume control function for external audio reproduction units by using volume control buttons of a remote controller is provided. The A/V device includes speakers, an audio output port for externally outputting an audio signal, an audio signal processing unit for reproducing and amplifying the audio signal and applying the amplified audio signal to the speakers or the audio output port, a memory unit for storing volume control values, and a control unit for applying to the audio signal processing unit any of the volume control values stored in the memory based on whether the external audio reproduction unit is plugged in the audio output port. The control unit controls the audio signal processing unit to adjust the volume control values for the audio output port by the volume control buttons when the external audio reproduction unit is plugged in the audio output port.

1 . An audio/video (A/V) device comprising:
 a display;   at least one speaker;   an audio output port which outputs an audio signal to an audio output port;   an audio signal processing unit which amplifies the audio signal and outputs the amplified audio signal to one of the at least one speaker and the audio output port;   a memory unit which stores volume control values corresponding to the audio output port and the at least one speaker; and   a control unit which one of the volume control values stored in the memory in response to the external speakers being plugged into the audio output port, controls the audio signal processing unit to change the one volume control values in response to the external speakers being plugged into the audio output port, and controls the display to display an indicator corresponding to the changed one of the volume control values in response to the external speakers being plugged into the audio output port.