Patent ID: 6188531
Filing Date: 2001-02-13
Classification: G11B

Abstract:
A system for sensing temperature during writing of information onto magnetic media and providing a sufficient write current for the sensed temperature, the system comprising:a head responsive to a write current for generating a magnetic flux used in writing data onto magnetic media;a write current source coupled to the head for receiving a write signal and providing write current to the head, wherein the magnitude of the write current is controlled by the write signal; anda temperature responsive device coupled to the write current source that senses temperature and provides a write signal having a magnitude dependent on temperature, the temperature responsive device comprising:a first variable resistance device coupled between a first reference voltage and an output node for fine adjustment of the write signal, wherein the output node is coupled to the write current source and communicates the write signal to the write current source;a second variable resistance device coupled between the output node and a second reference voltage for coarse adjustment of the write signal; anda coarse adjust input coupled to the second variable resistance device for adjusting the resistance of the second variable resistance device.