Patent ID: 7212787

Claim:
A wireless audio transmission and reception system comprising: a pulse width amplifier to receive an audio signal and a reference control ramp signal to compare said a voltage level of said audio signal with said reference control ramp signal to generate a digital output signal such that a pulse width of said digital output signal is modulated by said audio signal, such that the pulse width is proportional to an amplitude of said voltage level of said audio signal to provide a pulse width modulated signal; an up-converter in communication with the pulse width amplifier to receive the pulse width modulated signal and convert said pulse width modulated signal to a modulated carrier signal; a transmitter in communication with the modulated carrier signal to transfer the modulated carrier signal wirelessly; a receiver to receive the modulated carrier signal; a down-converter in communication with the receiver to receive the modulated carrier signal and combine said modulated carrier signal with a receiver local oscillator frequency signal to extract the pulse width modulated signal from the modulated carrier signal; and an integrator in communication with the down-converter to receive the extracted pulse width modulated signal to remove a timing signal from said extracted pulse width modulated signal to restore the audio signal.