Control apparatus, storage device, and head retracting method
View Patent ↗A fall sensor detects a fall of a storage device. A first moving unit moves the head to a predetermined position on a storage medium when a falling time exceeds a first threshold. A second moving unit retracts the head from the predetermined position to a ramp when the falling time exceeds a second threshold.
1. A control apparatus for a storage device that retracts a head on a storage medium upon detecting a fall, the control apparatus comprising:
a first moving unit that moves the head to a predetermined position on a storage medium when a falling time exceeds a first threshold; and
a second moving unit that retracts the head from the predetermined position to a ramp when the falling time exceeds a second threshold.
2. The control apparatus according to claim 1 , wherein
the first moving unit acquires information indicating whether the storage device is falling from a fall sensor that detects the fall, and moves the head to the predetermined position when the falling time exceeds the first threshold based on the acquired falling information.
3. The control apparatus according to claim 1 , wherein
the second moving unit acquires information indicating whether the storage device is falling from a fall sensor that detects the fall, and retracts the head from the predetermined position to the ramp when the falling time exceeds the second threshold based on the acquired falling information.
4. The control apparatus according to claim 1 , wherein
a distance between the predetermined position and the ramp is kept constant.
5. A storage device that retracts a head on a storage medium upon detecting a fall, the storage device comprising:
a first moving unit that moves the head to a predetermined position on a storage medium when a falling time exceeds a first threshold; and
a second moving unit that retracts the head from the predetermined position to a ramp when the falling time exceeds a second threshold.
6. The storage device according to claim 5 , wherein
the first moving unit acquires information indicating whether the storage device is falling from a fall sensor that detects the fall, and moves the head to the predetermined position when the falling time exceeds the first threshold based on the acquired falling information.
7. The storage device according to claim 5 , wherein
the second moving unit acquires information indicating whether the storage device is falling from a fall sensor that detects the fall, and retracts the head from the predetermined position to the ramp when the falling time exceeds the second threshold based on the acquired falling information.
8. The storage device according to claim 5 , wherein
a distance between the predetermined position and the ramp is kept constant.
9. A head retracting method of retracting a head from a storage medium, the head retracting method comprising:
moving the head to a predetermined position on a storage medium when a falling time exceeds a first threshold; and
retracting the head from the predetermined position to a ramp when the falling time exceeds a second threshold.
10. The head retracting method according to claim 9 , wherein the moving includes
acquiring information indicating whether the storage device is falling from a fall sensor that detects the fall; and
moving the head to the predetermined position when the falling time exceeds the first threshold based on the acquired falling information.
11. The head retracting method according to claim 9 , wherein the retracting includes
acquiring information indicating whether the storage device is falling from a fall sensor that detects the fall; and
retracting the head from the predetermined position to the ramp when the falling time exceeds the second threshold based on the acquired falling information.
12. The head retracting method according to claim 9 , wherein a distance between the predetermined position and the ramp is kept constant.