Patent ID: 7876912

Claim:
A headset device comprising: a first headset comprising: a first housing; an interface module, positioned in the first housing, for receiving an audio signal; a signal processing module, positioned in the first housing and electrically connected to the interface module, for separating the audio signal into a first channel signal and a second channel signal; an amplifying circuit, positioned in the first housing and electrically connected to the signal processing module, for amplifying the first channel signal and the second channel signal to generate a first amplified signal and a second amplified signal respectively; a first speaker, positioned in the first housing and electrically connected to the amplifying circuit, for outputting audio according to the first amplified signal; a power switch having a first input end and a second input end; and a first power supply device, connected to the first input end of the power switch; a second headset comprising: a second housing; a second speaker, positioned in the second housing and electrically connected to the amplifying circuit, for outputting audio according to the second amplified signal; and a second power supply device connected to the second input end of the power switch; a transmission line, electrically connected to the amplified circuit and the second speaker, for transmitting the second amplified signal from the first headset to the second headset; wherein when a supply voltage provided by the second power supply device reaches a predetermined threshold, the power switch causes the second power supply device to provide the first headset with an operating voltage, otherwise the power switch causes the first power supply device to provide the first headset with the operating voltage.