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

Claim 0:
1. 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 lower power state than the first power state, wherein at a time the request is received, data is stored in volatile memory;
store the data in always-on memory in response to receiving the power transition request;
generate and store a recovery code for specific data of the data, wherein the recovery code indicates portions of the data to be recovered, wherein the specific data is less than all of the data, wherein the less than all data is data for resources of the data storage device that were in use by a host device at a time of the receiving;
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.