A method includes, in one non-limiting embodiment, sending a request from a mass memory storage device to a host device, the request being one to allocate memory in the host device; writing data from the mass memory storage device to allocated memory of the host device; and subsequently reading the data from the allocated memory to the mass memory storage device. The memory may be embodied as flash memory, and the data may be related to a file system stored in the flash memory. The method enables the mass memory storage device to extend its internal volatile RAM to include RAM of the host device, enabling the internal RAM to be powered off while preserving data and context stored in the internal RAM.

A secure demand paging system (1020) includes a processor (1030) operable for executing instructions, an internal memory (1034) for a first page in a first virtual machine context, an external memory (1024) for a second page in a second virtual machine context, and a security circuit (1038) coupled to the processor (1030) and to the internal memory (1034) for maintaining the first page secure in the internal memory (1034). The processor (1030) is operable to execute sets of instructions representing: a central controller (4210), an abort handler (4260) coupled to supply to the central controller (4210) at least one signal representing a page fault by an instruction in the processor (1030), a scavenger (4220) responsive to the central controller (4210) and operable to identify the first page as a page to free, a virtual machine context switcher (4230) responsive to the central controller (4210) to change from the first virtual machine context to the second virtual machine context; and a swapper manager (4240) operable to swap in the second page from the external memory (1024) with decryption and integrity check, to the internal memory (1034) in place of the first page.

A method includes, in one non-limiting embodiment, sending a request from a mass memory storage device to a host device, the request being one to allocate memory in the host device; writing data from the mass memory storage device to allocated memory of the host device; and subsequently reading the data from the allocated memory to the mass memory storage device. The memory may be embodied as flash memory, and the data may be related to a file system stored in the flash memory. The method enables the mass memory storage device to extend its internal volatile RAM to include RAM of the host device, enabling the internal RAM to be powered off while preserving data and context stored in the internal RAM.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing a prefetch processing to prepare an ambient computing device to operate in a low-power state without waking a memory device. One of the methods includes performing, by an ambient computing device, a prefetch process that populates a cache with prefetched instructions and data required for the ambient computing device to process inputs to the system while in the low-power state, and entering the low-power state, and processing, by the ambient computing device in the low-power state, inputs to the system using the prefetched instructions and data stored in the cache.

An audio rendering device includes: at least one wireless communications interface configured to receive a first plurality of audio packets from a wireless communication device, the first plurality of audio packets including frames of audio data for a first audio channel from a set of one or more audio channels; and a processing unit; wherein the audio rendering device is configured to release, at respective first buffer release times, the frames of the audio data for the first audio channel from a first buffer for rendering by the processing unit; wherein the audio rendering device is configured to receive one or more messages from an other audio rendering device; and wherein the audio rendering device is configured to synchronize the first buffer release times with second buffer release times associated with the other audio rendering device based on the received one or more messages.

Devices and techniques are disclosed wherein an end user can remotely trigger direct data management activities of a data storage device (DSD), such as creating a data snapshot, resetting a snapshot, and setting permissions at the DSD via a remote mobile device app interface.

An audio rendering device includes: at least one wireless communications interface configured to receive a first plurality of audio packets from a wireless communication device, the first plurality of audio packets including frames of audio data for a first audio channel from a set of one or more audio channels; and a processing unit; wherein the audio rendering device is configured to release, at respective first buffer release times, the frames of the audio data for the first audio channel from a first buffer for rendering by the processing unit; wherein the audio rendering device is configured to receive one or more messages from an other audio rendering device; and wherein the audio rendering device is configured to synchronize the first buffer release times with second buffer release times associated with the other audio rendering device based on the received one or more messages.

Example memory reclaiming methods and apparatuses are provided to resolve a problem that application data is lost and a restart speed of an application becomes slower in a manner of reclaiming a memory by killing the application. One example memory reclaiming method includes determining an application program that occupies a to-be-reclaimed memory and selecting at least one virtual address space segment according to a running state of the application program. A virtual address space that is in the selected at least one virtual address space segment and that is occupied by the application program is reclaimed. The application program is not directly killed, but instead, only a memory occupied by application data that can be cleared in the running state is reclaimed according to the running state of the application program. Therefore, less application data is lost.

Aspects of the disclosure provide a data storage apparatus that includes a non-volatile memory (NVM) and a controller. The NVM includes a first NVM portion and a second NVM portion. The first NVM portion includes a plurality of first cell types. The first NVM portion includes a first sub-portion that is allocated to store file management data. The second NVM portion includes a plurality of second cell types. The controller is coupled to the NVM. The controller is configured to receive a plurality of payload data and a plurality of file management data; store the plurality of file management data at the first sub-portion of the first NVM portion; and store the plurality of payload data at the NVM.

A storage apparatus managing method applied to a first storage apparatus and a second storage apparatus coupled to the electronic apparatus is disclosed. The first storage apparatus includes a local registering region and a global registering region. The storage apparatus managing method includes: when the global registering region does not have a target data unit, reading the target data unit from the local registering region or from the second storage apparatus; and copying the target data unit to the global registering region. When the target data unit is copied to the global registering region, the target data unit is copied to a global registering buffer region, or otherwise in response to the global registering buffer region not having enough space, the target data unit is copied to a global registering file region.