Magnetic disk apparatus and method
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsHidetoshi Tsuneda, Kazuya Takada
Life of this patent
Estimating the term…
Abstract
A magnetic disk apparatus according to an embodiment includes a magnetic disk, a magnetic head, a second memory, and a controller. On the magnetic disk, a servo sector where first servo data is recorded is provided. The magnetic head writes data and reads data to and from the magnetic disk. The first memory stores data to be written and stores data read from the magnetic disk. The second memory stores second servo data. The controller acquires the second servo data corresponding to the first servo data from the second memory based on the first servo data read by the magnetic head when passing over the servo sector. The controller executes positioning control of the magnetic head by using the first servo data and the second servo data.
Claims12
A magnetic disk apparatus comprising:
- a magnetic disk on which a servo sector where first servo data is recorded is provided;
- a magnetic head configured to write data and read data to and from the magnetic disk;
- a first memory configured to store data to be written and store data read from the magnetic disk;
- a second memory configured to store second servo data;
- and
- a controller configured to
- acquire the second servo data corresponding to the first servo data from the second memory based on the first servo data read by the magnetic head when passing over the servo sector, and
- execute positioning control of the magnetic head by using the first servo data and the second servo data.
A method of executing positioning control of a magnetic head in a magnetic disk apparatus, the magnetic disk apparatus including the magnetic disk, a magnetic head serving to write data and read data to and from the magnetic disk, a first memory serving to store data to be written and store data read from the magnetic disk, and a second memory different from the first memory, the method comprising:
- acquiring second servo data stored in the second memory, the second servo data corresponding to first servo data, the acquiring of the second servo data being performed based on the first servo data read by the magnetic head when passing over a servo sector where the first servo data is recorded on the magnetic disk;
- and
- executing positioning control of the magnetic head by using the first servo data and the second servo data.
Dependencies are inferred from the claim text.