Patent ID: 6631048
Filing Date: 2003-10-07
Classification: G11B

Abstract:
A magnetic reproducing apparatus having at least one recording medium for magnetically recording information, an MR head arranged for each recording surface of the recording media, a current supply circuit for supplying sense currents to the MR heads, respectively, so that each MR head may read information from the recording medium, and a decoder for decoding the read information, comprising:a resistance measuring circuit for measuring a resistance value of a magnetoresistive element of each MR head whenever a power source of the magnetic reproducing apparatus is turned on; a memory for storing a conversion table containing resistance values of magnetoresistive elements measured in advance and proper sense current values corresponding to the resistance values; and a sense current setter for reading, from the conversion table, sense current values corresponding to the resistance values of the MR heads measured by the resistance measuring circuit and setting the read sense current values in the current supply circuit, so that the current supply circuit supplies sense currents to the MR heads based on the set sense current values.