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Asynchronous sample rate correction by time domain interpolation

Image Number 7 for United States Patent #7330138.

A circuit is provided to correct a sample rate by way of time domain interpolation having a first circuit loop having an up/down counter configured to receive an input signal and a feedback signal and an adder configured to receive the output signal from the up/down counter and to output a carry output as the feedback signal to the up/down counter and a second circuit loop configured to transmit a sum output from the adder to a modulator and to feed back an output signal from the modulator to an input of the adder.

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