Patent ID: 8184723
Filing Date: 2012-05-22
Classification: G09G,H04B,H04N

Abstract:
1. A circuit for processing a transmitted signal including a calibration pulse, the circuit comprising: an amplifying circuit having an equalizer input configured to receive the transmitted signal, an equalizer output, and an equalizer control input; a sampling circuit comprising a first sample input coupled to the equalizer output, a first sample output, and a first sample control input, and wherein the sampling circuit further comprises: a controller circuit comprising a first sample control output coupled to the first sample control input, wherein the sampling circuit samples the calibration pulse in response to a signal from the first sample control output; and a differencing circuit comprising a digital circuit configured to receive the first sample and the subsequent sample of the calibration pulse, and configured to subtract the first sample from the subsequent sample, wherein the difference between the first sample and the subsequent sample is a function of the slope of the calibration pulse, and a differencing output operably coupled to the equalizer control input.