Patent ID: 7589927

Claim:
A read channel incorporated in a storage device to process signals read from a storage medium, comprising: an equalizer equalizing input read signals to produce equalizer output signals; a detector sensing an adjusted equalizer output signal to determine an output value comprising data represented by the input read signals; an equalizer adaptor receiving the output value from the detector and a first input signal representing the equalizer output signal before being sensed by the detector to determine a first error signal used to adjust the equalizer operations; a first component adjusting the equalizer output signals to produce adjusted equalizer output signals transmitted to the detector, wherein the first component is adjusted by a second error signal; a second component calculating the second error signal from the output value from the detector and a second input signal representing one of the adjusted equalizer output signals before being sensed by the detector, wherein the first and second input signals are different and are adjusted by different components in a signal path between the equalizer and the detector, wherein the first and second error signals are different.