Method of setting write factor in hard disk drive and hard disk drive using the same
AssigneeSamsung Electronics Co., Ltd.
InventorsSung-youn Cho, Keung-ho Hong
Life of this patent
Estimating the term…
Abstract
A method of setting write factors of each head in a hard disk and a hard disk drive using the method. The method includes writing a write signal onto a test track based on a write factor initially set on the magnetic head, writing the write signals onto the tracks adjacent to the test track, measuring the write quality of the test track, changing the write factor of the magnetic head and repeating the writing of the write signal onto the test track, and setting a write factor of the magnetic head by selecting the write factor corresponding to an optimum write quality from among the write qualities of the write factors of the test track.
Claims20
A method of setting a write factor of a magnetic head in a hard disk drive, the method comprising:
- writing a write signal onto a test track based on a write factor initially set on the magnetic head;
- writing the write signal onto tracks adjacent to the test track;
- measuring the write quality of the test track;
- changing the write factor of the magnetic head in accordance with the write quality of the test track and repeating the writing of the write signal onto the test track based on the changed write factor;
- and
- setting the write factor of the magnetic head to correspond to an optimum write quality from among the measured write qualities of the test track.
A method of setting a write factor of a hard disk drive comprising a plurality of magnetic heads, the method comprising:
- writing a write signal onto a test track based on write factors initially set on each magnetic head;
- writing the write signals onto tracks adjacent to the test track;
- measuring the write quality of the test track;
- changing the write factor of each magnetic head in accordance with the write quality corresponding to each magnetic head and repeating the writing of the write signal onto the test track based on the changed write factors;
- and
- setting the write factor of each magnetic head to correspond to an optimum write quality selected from among the measured write qualities of each magnetic head.
A hard disk drive comprising:
- a plurality of magnetic heads to write write signals onto tracks based on a write factor corresponding to each magnetic head;
- and
- a plurality of write control units to respectively store the corresponding write factors of the magnetic heads,
- wherein, after writing the write signals onto a test track and onto tracks adjacent to the test track using each of the magnetic heads, the write factors of each magnetic head are set in accordance with a write quality of the test track, and the set write factors are stored in the corresponding write control units.
A method of setting a write factor in a hard disk drive comprising a plurality of tracks, the method comprising:
- writing write signals onto each of the tracks based on a write factor initially set to the tracks;
- writing the write signals onto adjacent tracks;
- measuring a write quality of each track;
- changing the write factors in accordance With the measured write quality and repeating the writing of the write signals onto each of the tracks and adjacent tracks based on the changed write factors;
- and
- setting write factors of the tracks to correspond to an optimum write quality from among the write qualities of each track.
A method of setting a write factor of a magnetic head, the method comprising:
- writing a write signal onto a test track and at least one adjacent track based on a preset write factor of the magnetic head;
- measuring the write quality of the test track;
- adjusting the write factor of the magnetic head in accordance with the write quality of the test track;
- and
- setting the write factor of the magnetic head based on the adjusted write factor.
Dependencies are inferred from the claim text.