摘要:
Systems and methods for maximizing shingled magnetic recording (SMR) drive capacity are described. In one embodiment, the SMR drive may include a main store to store user-accessible data, a media cache and media scratchpad to store internal data temporarily for internal operations, and a storage controller to process read and write requests. In some cases, the main store comprises a shingled media partition and an unshingled media partition. The storage controller may designate one or more data tracks from the shingled media partition as temporary data track guard bands. In some embodiments, a track range is selected based at least in part on at least one of an amount of data in the media cache, a size of the new data in the media cache, and an association between the new data in the media cache and data currently stored within the selected track range.
摘要:
A storage device includes a disk medium having a first recording region and a second recording region, a non-volatile semiconductor memory, and a controller. The controller is configured to write data of a first type into tracks of the first recording region that partially overlap with each other, to write for caching data of a second type into tracks of the second recording region, and to write for caching the data of the second type stored in the disk medium into the non-volatile semiconductor memory.
摘要:
A system and method for playback of media content, for example music, video, or other media content. A media device having a media playback application and including a touch-sensitive user interface can be adapted to display a visual array of media options, for example as a grid or list of card elements. Each media option can be associated with one or more media content items that can be streamed to and/or played on the device. The system can determine a selected card element, or media options that are proximate to a selected point or region of the visual array, and play or crossfade media content as appropriate. In accordance with various embodiments, additional features can be provided that improve user interaction, for example the use of audible notifications, media caching, or touch menus.
摘要:
Apparatuses and methods for prefetching data are disclosed. A method may include receiving a read request at a data storage device, determining a meta key in an address map that includes a logical block address (LBA) of the read request, wherein the meta key includes a beginning LBA and a size field corresponding to a number of consecutive sequential LBAs stored on the data storage device, calculating a prefetch operation to prefetch data based on addresses included in the meta key, and reading data corresponding to the prefetch operation and the read request. An apparatus may include a processor configured to receive a read request, determine a first meta key and a second meta key in an address map, calculate a prefetch operation based on addresses included in the first meta key and the second meta key, and read data corresponding to the prefetch operation and the read request.
摘要:
According to one embodiment, a power management module of a storage device executes a process of stopping rotation of a disk storage medium by selectively using one of a first mode of stopping the rotation of the disk storage medium on condition that a media access command is not received during a predetermined time from last reception of a media access command, and a second mode of stopping the rotation of the disk storage medium on condition that a media access command which causes access to the disk storage medium is not received during a predetermined time from last reception of a media access command which causes access to the disk storage medium. In addition, the power management module executes a process of starting the rotation of the disk storage medium by selectively using one of a third mode and a fourth mode.
摘要:
Embodiments are disclosed for providing play/pause content. An example method includes receiving a command to play audio from a zone, the zone including one or more playback devices, wherein the zone is configured to play items from a playback queue responsive to the command to play audio. The example method also includes determining that the playback queue includes no playable items. The example method also includes automatically placing information identifying at least one playable item in the playback queue. The example method also includes, responsive to the command to play audio, causing to play the at least one playable item by the zone.
摘要:
Systems and methods for maximizing shingled magnetic recording (SMR) drive capacity are described. In one embodiment, the SMR drive may include a main store to store user-accessible data, a media cache and media scratchpad to store internal data temporarily for internal operations, and a storage controller to process read and write requests. In some cases, the main store comprises a shingled media partition and an unshingled media partition. The storage controller may designate one or more data tracks from the shingled media partition as temporary data track guard bands. In some embodiments, a track range is selected based at least in part on at least one of an amount of data in the media cache, a size of the new data in the media cache, and an association between the new data in the media cache and data currently stored within the selected track range.
摘要:
Method and apparatus for data storage using data compression techniques. In some embodiments, a data recording medium has a recording surface with a plurality of concentric tracks accessible using a moveable data read/write transducer. A cache memory temporarily stores data during transfer operations with the data recording medium. A controller is configured to, responsive to receipt of input write data, retrieve from the data recording medium to the cache memory a selected multi-block data set associated with the input write data, use the received input data to update the retrieved multi-block data set, compress the updated retrieved multi-block data set to generate a compressed data set, and write the compressed data set to a selected band of adjacent tracks on the data recording surface. A portion of the compressed data set is generated during movement of the data read/write transducer to the selected band of adjacent tracks.
摘要:
According to one embodiment of the present invention, a cache control method of a storage device is provided, the storage device including: a storage unit that stores data, and a buffer memory having a first cache area and a second cache area serving as a cache of the storage unit. The cache control method according to the embodiment includes: storing data read from the storage unit in the first cache area in response to a read command from a host; moving retried data, on which a read retry has occurred upon the readout from the storage unit, to the second cache area from the first cache area in order that the retried data amount in the second cache area is not more than a predetermined data amount; and transferring data in the first cache area or the second cache area to the host.
摘要:
An error corrector with a high use efficiency of a memory includes a memory, a bus device, an input buffer and an error correction module. The memory stores data. The bus device controls a memory access. The input buffer receives and temporarily stores a coded blockcode data, and writes the coded blockcode data in the memory through the bus device. The error correction module reads the coded blockcode data in the memory through the bus device and decodes it in rows and columns to thereby obtain decoded data and check bytes. The error correction module writes the decoded data in the memory through the bus device and discards the check bytes.