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US 10,120,828 B2Granted
Bridge for bus-powered peripheral device power management
AssigneeSeagate Technology LLC
InventorsBongKyom Kim, DongWook Lee, ByungWook Kim, NamGeun Kim
Life of this patent
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Abstract
Technologies are described herein for power management in a peripheral device. A bridge is coupled to a communication link that provides power. The bridge determines an available power from the communication link. The bridge informs a peripheral device coupled to the bridge of the available power.
Claims12
An apparatus comprising:
- a first interface configured to be coupled to a host with a first communication link, the first interface further configured to receive power from the host through the first communication link;
- a second interface configured to be coupled to a peripheral device with a second communication link, the second interface further configured to pass power from the host to the peripheral device through the second communication link;
- and
- control circuitry coupled to the first and second interfaces, and configured to:
- determine a version of a protocol utilized by the first communication link, and
- based on the determined version of the protocol, inform the peripheral device of a maximum available power from the host.
3 more elements
A method comprising:
- coupling a bridge to a first communication link that provides power;
- coupling the bridge to a peripheral device over a second communication link that passes the power to the peripheral device;
- determining a version of a protocol utilized by the first communication link, the version of the protocol associated with a maximum available power from the first communication link;
- and
- informing the peripheral device of the maximum available power from the first communication link based on the determined version of the protocol.
2 more elements
A method comprising:
- coupling a mass storage device to a bridge through a first communication link, the bridge coupled to a host by a second communication link, the host providing power over the second communication link;
- receiving power at the mass storage device from the host through the bridge over the first communication link;
- receiving available power information comprising a maximum current amount available from the host at the mass storage device from the bridge, the available power information determined by the bridge based on a version of a protocol utilized by the second communication link between the host and the bridge;
- and
- configuring power usage of the mass storage device responsive to the available power information.
2 more elements
Dependencies are inferred from the claim text.