Method of optimizing flying height of head and hard disk drive manufactured by the same
AssigneeSamsung Electronics Co., Ltd.
InventorsSeong Yong YOON, Myung Wook Song, Chang-Hwan Lee, Su-Hyeon Kim
Life of this patent
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Abstract
A hard disk drive includes a controller that optimizes a flying height of a head of a hard disk drive. The controller determines an optimal flying height of a head based on a preset table value and an MRR value of a head measured during a hard disk drive manufacturing process and sets the head according the determined optimal flying height such that recording capacitance is improved.
Claims20
A method of optimizing a flying height of a head of a hard disk drive, the method comprising:
- measuring at least one parameter value with respect to the flying height of the head and a recording capacitance value of the hard disk drive corresponding to the parameter value and generating a predetermined table including measured values based on the at least one measured parameter value;
- and
- optimizing the flying height of the head by comparing a measured process parameter value corresponding to at least one hard disk drive manufacturing process with at least one measured value of the table.
A hard disk drive comprising:
- a head to read/write information with respect to a disk;
- and
- a controller in electrical communication with a memory unit to optimize a flying height of a head by comparing parameter values measured corresponding to a hard disk drive manufacturing process with a pre-generated table stored in the memory unit,
- wherein the table is generated based on measured values of a parameter value with respect to the flying height of the head and a recording capacitance value of the hard disk drive corresponding to the parameter value.
A hard disk drive module including at least one disk to store data, the hard disk drive module comprising:
- a head disposed above the at least one disk and adjustable according to a flying height;
- memory unit to store a plurality of parameters measured during a pre-determined manufacturing process of the hard disk drive module;
- and
- a controller in electrical communication with the memory unit to output a plurality of control signals in response to each measured parameter among the plurality of measured parameters such that each control signal sets the head at a corresponding flying height,
- wherein a recording capacitance of the hard disk drive module is measured at each flying height set by the corresponding control signal generated by the controller.
A method of optimizing a flying height of a head included in a hard disk drive module including at least one disk to store data, the method comprising:
- storing a plurality of parameters measured during a pre-determined manufacturing process of the hard disk drive module;
- setting the head at a plurality of flying heights, each flying height corresponding to a measured parameter among the plurality of measured parameters;
- and
- measuring a recording capacitance of the hard disk drive module at each set flying height.
A method of optimizing a flying height of a head of a hard disk drive, the method comprising:
- determining a manufacturing process of the hard disk drive during which to optimize the flying height of the head;
- measuring during the determined manufacturing process a parameter of the head to be cross-referenced with a pre-determined parameter listed in a pre-generated table stored in a memory unit;
- matching the measured parameter with the pre-determined parameter to determine a corresponding recording capacitance of the head;
- and
- adjusting the flying height of the head according to the determined recording capacitance.
Dependencies are inferred from the claim text.