Patent ID: 7653344

Claim:
A digital wireless audio and video playback system, comprising: an audio-video signal controller comprising: a video signal input for receiving a digital video signal; an audio signal input for receiving a plurality of digital audio signals, each digital audio signal associated with an audio channel; a digital signal processor coupled to receive the audio signals and process the audio input signals in the digital domain; and an encoder coupled to the digital signal processor and the video signal input to receive the digital video signal and to encode the digital video signal into digital video bitstream and further coupled to the digital signal processor to receive the audio signals, and to encode each audio signal into uncompressed digital audio bitstream; an RF transmitter coupled to the encoder to receive the digital video bitstream and the plurality of digital audio bitstreams, modulate each digital bitstream into an assigned channel on a radio frequency (RF) digital broadcast signal and to transmit the digital broadcast signal to a plurality of receivers, to provide a point-to-multipoint transmission of the video signal and audio signals; a wireless video receiver assigned to one of the channels of the digital broadcast signal, and comprising: a first RF receiver to receive the digital broadcast signal for the digital video bitstream, and demodulate the broadcast signal to obtain the encoded digital video bitstream; a video decoder coupled to the RF receiver to receive the encoded digital video bitstream, and to decode and output the digital video signal to a display device; and a plurality of wireless audio receivers, each audio receiver assigned to one of the channels of the digital broadcast signal, and comprising: a second RF receiver to receive the digital audio broadcast signal and to demodulate the signal to obtain the encoded, uncompressed digital audio signal; an audio decoder coupled to the RF receiver to receive the encoded digital audio signal to decode the digital audio signal; a digital signal processor coupled to the decoder to process the digital audio signal in the digital domain; and at least one amplifier coupled to receiver and to amplify the audio signal, and provide an amplified analog audio signal to a loudspeaker.