Patent ID: 6356404
Filing Date: 2002-03-12
Classification: G11B

Abstract:
A method for performing a read operation in a head/disc assembly of a disc drive, comprising steps of:(a) providing first and second read bias current sources and a read preamplifier sequentially connectable to the first and second read bias current sources; (b) applying a first read bias current from the first read bias current source to a first head of the head/disc assembly to transduce data from a corresponding first disc recording surface; (c) during the operation of step (b), applying a second read bias current from the second read bias current source to a second head of the head/disc assembly adjacent a corresponding second disc recording surface to thermally stabilize the second head to prepare the second head for the subsequent transducing of data from the second disc recording surface; and (d) during the operation of steps (b) and (c), connecting the first read bias current source to the read preamplifier without connecting the second read bias current source to the read preamplifier, the read preamplifier amplifying a first readback signal generated as the data are transduced from the first disc recording surface.