Patent ID: 6377412
Filing Date: 2002-04-23
Classification: G11B

Abstract:
An apparatus for improving data recovery for a magneto-resistive head, comprising:a circuit path carrying digital data signals read from a recording media by a magnetic head; an amplifier, coupled to the circuit path, for amplifying the digital data signals; a recovery time setting means, coupled to the amplifier, the recovery time setting means having an programmable recovery time constant associated therewith, the recovery time constant being adjusted to set a recovery time for the amplifier to provide readable data signals representing the digital data signals read by the magnetic head after a disturbance to the magnetic head; and a digital controller, coupled to the recovery time setting means, for adjusting the recovery time setting means to change the recovery time constants in response to a disturbance to the magnetic head; wherein the amplifier comprises a data channel amplifier providing an input signal to channel electronics, the recovery time setting means comprises a programmable RC filter and the recovery time constant comprises an AC coupling pole for the RC filter, the AC coupling pole being selected to set a recovery time for the data channel amplifier.