Information processing apparatus with switching circuit on power supply for disk device
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsDaisuke Sudo, Hiroshi Isokawa
Life of this patent
Estimating the term…
Abstract
According to one embodiment, there is provided a disk device including a head, a disk, a first motor, and a first circuit. The disk has a recording surface. The first motor causes the head to seek along the recording surface. The first circuit can switch between a first state and a second state. The first state is a state where a current path of the first motor is electrically cut off from a first electricity storage unit. The second state is a state where the current path of the first motor is electrically connected to the first electricity storage unit.
Claims6
An information processing apparatus comprising:
- a host including an electricity storage unit;
- a first disk device that includes a first head, a first disk having a first recording surface, a first motor that causes the first head to seek along the first recording surface, and a first circuit that can switch between a first state and a second state, the first state being a state where a current path of the first motor is electrically cut off from the electricity storage unit via a first power line, the second state being a state where the current path of the first motor is electrically connected to the electricity storage unit;
- and
- a second disk device that includes a second head, a second disk having a second recording surface, a second motor that causes the second head to seek along the second recording surface, and a second circuit that can switch between a third state and a fourth state, the third state being a state where a current path of the second motor is electrically cut off from the electricity storage unit via a second power line, the fourth state being a state where the current path of the second motor is electrically connected to the electricity storage unit, wherein the first disk device further includes:
- a third motor that rotates the first disk;
- and
- a third circuit that includes a first rectifying circuit connected to a current path of the third motor and can switch between a fifth state and a sixth state, the fifth state being a state where the first rectifying circuit is electrically cut off from a second electricity storage unit, the sixth state being a state where the first rectifying circuit is electrically connected to the second electricity storage unit, and
- wherein the second disk device further includes:
- a fourth motor that rotates the second disk;
- and
- a fourth circuit that includes a second rectifying circuit connected to a current path of the fourth motor and can switch between a seventh state and an eighth state, the seventh state being a state where the second rectifying circuit is electrically cut off from a third electricity storage unit, the eighth state being a state where the second rectifying circuit is electrically connected to the third electricity storage unit.
Dependencies are inferred from the claim text.