Device for control of the flying height of magnetic head in a hard disk drive apparatus and a control method therefor

摘要

A hard disk drive apparatus (100) to control a flying height of a magnetic head (110) and a method thereof are provided. The hard disk drive apparatus (100) includes a disk (102), a magnetic head (110) to read data from the disk (102) or to record data on the disk (102), a flying height maintaining unit (210) to control a flying height of the magnetic head (110) and to uniformly maintain the flying height above the disk (102), and a controller (230) to control the flying height maintaining unit (210) to maintain a first height as the flying height of the magnetic head (110) in a seek mode, wherein the first height is greater than a second height at which a write operation or a read operation is performed by the magnetic head (110). The hard disk drive apparatus (100) to control a flying height of a magnetic head (110) and the method thereof to minimize Head Disc Interference (HDI) between the magnetic head (110) and the disk (102), due to decrease of the flying height of the magnetic head (110), which may occur in the seek mode of the magnetic head (110), so that performance degradation while recording and reading as a result of system deterioration can be prevented and reliability of a system can be improved.