Abstract: A multimedia television system is disclosed. The multimedia television system comprises a receiver, a detector, an audio processing/controlling device, and a mixing device. The receiver receives an audio/video signal comprising an audio signal and a video signal and outputs the audio signal and the video signal respectively. When an external upgrading/transmitting device is connected to the detector, the detector will generate an upgrading signal. When the audio processing/controlling device receives the upgrading signal, the audio processing/controlling device will process the audio signal into a multi-channel audio signal comprising front sub-audio signals and rear sub-audio signals according to the upgrading signal. Then, the mixing device processes the rear sub-audio signals into at least one mixed audio signal. The detector receives the at least one mixed audio signal and transmits the at least one mixed audio signal via the external upgrading/transmitting device.

Abstract: A multimedia television is provided. The multimedia television includes a video playback apparatus, an audio processing device, M front loudspeakers, a rear audio playback apparatus, and a mixing device. The video playback apparatus is used for displaying a video signal. The audio processing device processes an audio signal into a multi-channel audio signal consisting of M front sub-audio signals and N rear sub-audio signals. Each front loudspeaker plays back one corresponding front sub-audio signal. And, the mixing device mixes the N rear sub-audio signals into a mixed audio signal, which is then wirelessly transmitted to the rear audio playback apparatus. After the mixed audio signal is processed into N rear sub-audio signals, N rear loudspeakers in the rear audio playback apparatus playback the N rear sub-audio signals.

Abstract: A multimedia television system is disclosed. The multimedia television system comprises a receiver, a detector, an audio processing/controlling device, and a mixing device. The receiver receives an audio/video signal comprising an audio signal and a video signal and outputs the audio signal and the video signal respectively. When an external upgrading/transmitting device is connected to the detector, the detector will generate an upgrading signal. When the audio processing/controlling device receives the upgrading signal, the audio processing/controlling device will process the audio signal into a multi-channel audio signal comprising front sub-audio signals and rear sub-audio signals according to the upgrading signal. Then, the mixing device processes the rear sub-audio signals into at least one mixed audio signal. The detector receives the at least one mixed audio signal and transmits the at least one mixed audio signal via the external upgrading/transmitting device.

Abstract: A wireless multi-channel audio system is provided. The audio system includes a multiplexer, a transmitting antenna, a transmitter, and M playback apparatuses. First, the multiplexer receives M channels of audio signals and adds an ith identification to the ith channel of audio signals among the M channels of audio signals. Next, the multiplexer mixes the M channels of audio signals to generate a mixed signal in a time-division multiplexing way. After receiving the mixed signal from the multiplexer, the transmitter transmits the mixed signal through the transmitting antenna. The ith playback apparatus among the M playback apparatuses includes an ith antenna, an ith receiver, and an ith loudspeaker. The ith receiver receives the ith channel of audio signals from the mixed signal according to the ith identification and through the ith antenna. And, the ith loudspeaker plays back the ith channel of audio signal received by the ith receiver.

Abstract: A multimedia television is provided. The multimedia television includes a video playback apparatus, an audio processing device, M front loudspeakers, a rear audio playback apparatus, and a mixing device. The video playback apparatus is used for displaying a video signal. The audio processing device processes an audio signal into a multi-channel audio signal consisting of M front sub-audio signals and N rear sub-audio signals. Each front loudspeaker plays back one corresponding front sub-audio signal. And, the mixing device mixes the N rear sub-audio signals into a mixed audio signal, which is then wirelessly transmitted to the rear audio playback apparatus. After the mixed audio signal is processed into N rear sub-audio signals, N rear loudspeakers in the rear audio playback apparatus playback the N rear sub-audio signals.