| 摘要 |
In one embodiment, there is provided a head controller for controlling a head of a read/write device which reads/writes data from/into a recording medium. The head controller includes: a controller configured to adjust a gap between the head of the read/write device and a surface of the recording medium by increasing/decreasing a power supplied to a heater, wherein the heater is configured to heat and expand the read/write device; and an acquisition unit configured to acquire output differences of the read/write devices for two or more rotation speeds of the recording medium, wherein the controller is configured to increase or decrease the power supplied to the heater based on the output differences of the read/write device.
|
