Automated transitions power modes while continuously powering a power controller and powering down a media controller for at least one of the power modes
AssigneeWestern Digital Technologies, Inc.
InventorsDavid W. Wheelock, David J. Guss
Life of this patent
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Abstract
A data storage device comprising a storage media, a media controller, a power system and a power controller is disclosed. The media controller is configured to read data from and write data to the storage media. The power system is configured to controllably power the media controller, and the power controller is configured to autonomously transition the data storage device between a plurality of power modes, wherein the power system continuously powers the power controller through the power modes and powers down the media controller for at least one of the power modes.
Claims26
A data storage device configured to couple to a host, the data storage device comprising:
- a storage media;
- a media controller configured to read data from and write data to the storage media responsive to commands received from the host;
- a power system configured to controllably power the media controller;
- and
- a power controller configured to autonomously transition the data storage device between a plurality of power modes, wherein the power system continuously powers the power controller through the power modes and powers down the media controller for at least one of the power modes.
A method performed in a data storage device, the data storage device comprising a storage media, a media controller configured to read data from and write data to the storage media, a power system and a power controller configure to transition the data storage device between two power modes, the method comprising:
- controllably powering the media controller using the power system;
- detecting no activity from a host device for a period of time;
- and
- in response to detecting no activity for the period of time, the power controller transitioning the data storage device between the two power modes autonomously of the media controller,
- wherein the power system continuously powers the power controller through the two power modes and powers down the media controller for at least one of the two power modes.
Dependencies are inferred from the claim text.