Patent ID: 6898040
Filing Date: 2005-05-24
Classification: B82Y,G11B

Abstract:
1. An embedded controller to control a read mechanism and a write mechanism, both included in a merged read/write head of a disk drive controlled by said embedded controller, comprising: a computer accessing a memory containing a program system including at least two program steps; and means for said computer measuring a read resistance of said read mechanism; wherein said program system includes the program steps of measuring a read resistance of said read mechanism to create said measured read resistance; obtaining a write current setting in use with said write mechanism; and mutually determining a maximum read current for said read mechanism and a maximum write current for the write mechanism for the write mechanism, both based upon said measured read resistance and said write current setting; and wherein the program step mutually determining said maximum read current and said maximum write current is further comprised of the program steps of: referencing a table by said measured read resistance indication to create a maximum read current indication and a write current maximum indication; generating said maximum read current based upon said maximum read current indication; and generating said maximum write current based upon said maximum write current indication; wherein said measured read resistance indication is based upon said measured read resistance. wherein said write mechanism significantly heats said read mechanism based upon said write current in use with said write mechanism; wherein said read mechanism supports reading through a magneto-resistive effect upon a surface of said disk drive belonging to a read effect collection including a Giant Magneto-Resistive (GMR) effect.