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US 8,924,641 B2Granted
Selectively depowering portion of a controller to facilitate hard disk drive safeguard operations
AssigneeSeagate Technology LLC
InventorsJon David Trantham, Brian Dean Boling, Dale Herbert Erickson
Life of this patent
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Abstract
In response to a hard disk drive losing primary power, power is obtained from a spinning motor of the hard disk drive. Portions of a controller of the hard disk drive are selectively depowered to facilitate performing safeguard operations via the controller using the power obtained from the spinning motor.
Claims20
A controller capable of being coupled to circuitry of a hard disk drive, the controller configured to:
- in response to the hard disk drive losing primary power, obtain power from a spinning motor of the hard disk drive;
- and
- selectively depower portions of the controller to facilitate performing safeguard operations via the controller using the power obtained from the spinning motor.
A method comprising:
- in response to a hard disk drive losing primary power, obtaining power from a spinning motor of the hard disk drive;
- and
- selectively depowering portions of a controller of the hard disk drive to facilitate performing safeguard operations via the controller using the power obtained from the spinning motor.
An apparatus comprising:
- a power loss detection circuit configured to provide a power loss signal responsive to the apparatus losing primary power;
- a power supply circuit coupled to the power loss detection circuit and configured to provide shutdown power from a spinning disk motor of a hard disk drive in response to the power loss signal;
- and
- a controller coupled to the power loss detection circuit and including portions that are selectively depowered responsive to the power loss signal;
- wherein the apparatus is configured to perform safeguard operations of the hard disk drive using the shutdown power in response to the power loss signal.
2 more elements
Dependencies are inferred from the claim text.