Apple Inc.

Russell Dean Reece

Keith Alan Cox

Jonathan David Callas

Jeffrey D Whitman

Data is securely stored on a storage device by encoding a data block into multiple encoded blocks, any number of which can be recombined to recover the data block. The encoded blocks are stored at known logical locations corresponding to physical locations on a storage device that change over time. When the data needs to be destroyed, at least one of the encoded blocks is overwritten with arbitrary data. In one aspect, the encoded blocks include at least one random block that is used to encode the data block. In another aspect, the known logical locations are stored in metadata.

Secure storage of full disk encryption keys

At least certain embodiments of the disclosures relate to methods, devices, and data processing systems for thermal-based acoustic management. In one embodiment, a computer-implemented method defers one or more background tasks during normal operation of a system if the system has a reduced performance feature that allows reduced or throttled performance in a non-user state. The system enters a low power state (e.g., sleep state) to cool the system after a period of normal operation. The system enters a different low power state (e.g., dark wake state) with a reduced performance and performs at least one of the deferred background tasks while in this low power state without needing a cooling mechanism.

Thermal-based acoustic management

Methods and systems for storage management in a data processing device. The data processing device may be connected to a host computer and it can be in one of two states: disk mode (e.g., docked) or device mode (e.g., undocked). According to an embodiment, a mass storage device associated with a data processing device is divided into two or more segments or virtual volumes, and at least one volume is managed by the device even in a disk mode. In some cases, this makes the device usable while in the docked state and hence it improves the user experience. In some embodiments, an extra software component other than the file system is employed on the device to manage the storage device. Certain volumes may be dynamically increased or decreased while the data processing device is in a disk mode.

Growing community of inventors

Foster City, CA, United States of America

Russell Dean Reece