Adaptive correction of symmetrical and asymmetrical saturation in magnetic recording devices

A magnetic recording device for correcting saturated signals, the magnetic recording device comprising:

• a preprocessor that receives at least n saturated input signals including an nth saturated input signal, the preprocessor being configured to process the n saturated input signals to produce a corresponding n output signals, the n output signals including an nth output signal from the nth saturated input signal;
• an interpolator that processes the nth output signal to determine an nth interpolator output;
• and
• a slicer that determines an nth slicer output for the nth output signal, the nthslicer output being at one of three different levels;
• wherein the preprocessor receives and processes an n+1th saturated input signal to produce a n+1th output signal that is based on each of the nth interpolator output that is received by the preprocessor directly from the interpolator, and the level of the nth slicer output.

A magnetic recording device for correcting saturated signals, the magnetic recording device comprising:

• a preprocessor that receives at least n saturated input signals including an nth saturated input signal, the preprocessor being configured to process the n saturated input signals to produce a corresponding n output signals, the n output signals including an nth output signal from the nth saturated input signal;
• an interpolator that processes the nth output signal to determine an nth interpolator output;
• and
• a slicer that determines an nth slicer output for the nth output signal, the nth slicer output being at one of three different levels;
• wherein the preprocessor receives and processes an n+1th saturated input signal to produce a n+1th output signal that is based on each of the nth interpolator output and the level of the nth slicer output;
• and
• wherein for the n+1th saturated input signal received by the preprocessor, the current value of one of the positive coefficient, the zero coefficient and the negative coefficient is adjusted depending on the level of the nth slicer output.