Patent ID: 11966613
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 11:
12. A data storage device, comprising:
a memory device; and
a controller coupled to the memory device, wherein the controller is configured to:
receive a power transition request to transition the data storage device from a first power state to a second power state, wherein the second power state is a higher power state than the first power state;
generate and store a recovery code for specific data of data, wherein the specific data is data for resources of the data storage device that were in use by a host device at a time of the receiving;
retrieve data stored in always-on memory, wherein the data stored in always-on memory is less than all data present in volatile memory prior to the data storage device entering the first power state;
transition the data storage device to the second power state;
transition to the first power state;
detect the recovery code; and
retrieve the specific data without recovering data not identified in the recovery code.