Apparatus and method for removing an offset signal

摘要

An offset compensator is disclosed. The offset compensator is suitable for use with any antipodal information signal distorted by an offset voltage. The offset compensator measures the positive and negative peak amplitudes, compares the magnitudes thereof, and produces a correction voltage based on that comparison. The correction voltage has a positive sign when the magnitude of the negative peak amplitude exceeds the magnitude of the positive peak amplitude, and the correction voltage has a negative sign when the magnitude of the positive peak amplitude exceeds the magnitude of the negative peak amplitude. The magnitude of the correction voltage represents the difference between the magnitudes of the positive and negative peak amplitudes, and is added to the antipodal information signal to remove the offset voltage.