Patent ID: 6122131
Filing Date: 2000-09-19
Classification: G11B

Abstract:
A disk drive assembly mountable at a supportive mounting of a host device, said disk drive assembly comprising:rotatable storage media, said rotatable storage media having servo information locations and data storage locations arranged thereupon;a spindle motor having a spindle rotatable about a longitudinal axis, the spindle engaged with said rotatable storage media, said spindle motor for rotating said rotatable storage media at a selected rotation speed;a MR (magneto resistive) head transducer positionable proximate to said rotatable storage media, said MR head transducer for selectively reading data stored upon, and with associated inductive write element, writing data upon, said rotatable storage media;a voice coil motor coupled to said MR head transducer, said voice coil motor for positioning said MR head transducer proximate to selected locations of said rotatable storage media;a read channel circuit coupled to said MR head transducer, said read channel circuit at least for processing the data read by said MR head transducer, processing performed by said read channel circuit including adaptive detection of thermal asperities formed upon said rotatable storage media; anda controller coupled to said spindle motor, said voice coil motor, and said read channel circuitry, said controller for selecting the rotation speed at which said spindle motor rotates said rotatable storage media, for adaptively actuating said voice coil motor, for controlling current flow to the MR head transducer during idle mode and for controlling operation of said read circuitry, actuation of said voice coil motor adaptively responsive to the processing of the data by said read channel circuit.