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

Claim 17:
18. A data storage device, comprising:
memory means; and
a controller coupled to the memory means, wherein the controller is configured to:
create, store, and read a recovery code for specific data, wherein the specific data is less than all of data stored, wherein the recovery code indicates that less than all data present in volatile memory when the data storage device is in an operational power state is stored in always-on memory when the data storage device is in a non-operational power state, 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 receiving a request to power transition;
transition power states of the data storage device;
detect the recovery code; and
retrieve the specific data without recovering data not identified in the recovery code.