Patent ID: 8098840
Filing Date: 2012-01-17
Classification: H04S

Abstract:
1. A multi-channel output device for a multimedia device comprising: a plurality of reception ends for receiving a plurality of sound signals; an amplifier comprising an input end and an output end, for amplifying signals received by the input end and outputting amplified signals from the output end; a plurality of sound output devices for outputting sound according to received signals; a first switching unit coupled between the plurality of reception ends and the input end of the amplifier, for coupling a reception end of the plurality of reception ends to the input end of the amplifier according to a control signal, wherein a switching frequency of the first switching unit switching the plurality of reception ends to be coupled to the input end of the amplifier is greater than a threshold value; a second switching unit coupled between the output end of the amplifier and the plurality of sound output devices, for coupling the output end of the amplifier to a sound output device of the plurality of sound output devices according to the control signal, wherein a switching frequency of the second switching unit switching the output end of the amplifier to be coupled to the plurality of sound output devices is greater than a threshold value; and a control unit coupled to the first switching unit and the second switching unit, for outputting the control signal.