MR head read signal preconditioning circuitry

摘要

The present application relates to circuitry for processing an analog read signal, such as a signal produced by a magnetoresistive head, in a magnetic data storage system. The circuitry processes the analog signal before the signal reaches the detector which converts the analog signal into a digital signal representative of the data originally stored on the magnetic medium. The application comprises circuitry for equalizing the amplitudes of the positive and negative pulses in the analog read signal. The application may be used in magnetic data storage systems using any conventional data detection method.