Abstract: Technologies are provided for supporting multi-actuator storage device access using logical addresses. Separate sets of storage locations on a storage medium of a storage device can be associated with different actuators of the storage device. For example, a first set of storage locations can be assigned to a first actuator of the storage device and a second set of storage locations can be assigned to a second actuator of the storage device. The storage locations of the storage medium can be associated with logical addresses. The storage device can receive a data access request containing a logical address and can identify a storage location associated with the logical address. The storage device can identify a storage location set to which the storage location belongs and can use an actuator associated with the storage location set to access the storage location associated with the logical address.

Abstract: A data storage device can consist of a data storage medium that has a recording surface accessed by a first transducing head suspended by a first actuator and a second transducing head suspended by a second actuator. The first actuator may be configured to access a first region of the recording surface while the second actuator is configured to access a second region of the recording surface. The first and second regions can be separate and non-overlapping.

Abstract: A data storage device includes a first data storage surface and a second data storage below the first data storage surface. The data storage device also includes a first micro-actuator coupled to a first arm that supports a first head over the first data storage surface, and a second micro-actuator coupled to a second arm that supports a second head over the second data storage surface. The data storage device further includes a coarse actuator, to which the first and second arms are coupled, that positions the first head and the second head between corresponding first and second tracks on the respective first and second data storage surfaces. Micro-actuator drive circuitry finely positions the first head over the first track and the second head over the second track by concurrently driving the first micro-actuator and the second micro-actuator in opposite directions.

Abstract: According to one embodiment, a magnetic disk device includes a first magnetic disk, a second magnetic disk, a first actuator with a first head which reads/writes data from/to the first magnetic disk, a second actuator with a second head which reads/writes data from/to the second magnetic disk, the second actuator operated independently from the first actuator, a first controller configured to retracts the first actuator at a first time, and a second controller configured to retract the second actuator at a second time which is shifted from the first time by a certain period of time.

Abstract: HDDs including multiple heads driven by separate actuator spindles can read from or write to one or more platters simultaneously. Simultaneous active heads can be used to increase data rate or for other purposes. The multiple independently-actuated heads can access the same platter or different platters and may be moved across an associated platter surface in a number of different ways. However, multiple independently operating actuators may lead to mechanical coupling between the actuators. For example, as certain resonant frequencies, the movement of one actuator arm may cause unacceptable movement of another actuator arm within the HDD. This mechanical coupling can have detrimental effects on the HDD. The disclosed coupling observer and disable systems detect and mitigate detrimental effects of mechanical coupling between the independently operated actuators.

Abstract: Disclosed herein is a dual actuator magnetic storage device that comprises a housing, magnetic disks in the housing, an interface connector located proximate a first corner of the housing formed by a first short side and a first long side, a first voice coil motor proximate a second corner of the first short side and a second long side, a first carriage arm positioned near the first short side to move the first carriage arm relative to the magnetic disks, a second voice coil motor positioned proximate a second short side along the first long side, a second carriage arm positioned near the second short side and coupled to the second voice coil motor to move the second carriage arm. The interface connector is recessed into a base of the housing along the first short side to be near the first long side to provide electrical communication through the housing.

Abstract: In various embodiments player may participate in gaming related activities using a terminal with multiple display screens.

Abstract: A data-storing method for accelerated read throughput of a channel received as part of a multi-channel data stream includes writing a first channel segment of the multi-channel data stream to a first continuous sequence of physical blocks along a first data track of a storage medium within a storage device and identifying a second channel segment of the multi-channel data stream as being a continuation of the first channel segment. The method further includes writing the second channel segment to a second continuous sequence of physical blocks along a second data track responsive to the identification, the second continuous sequence of physical blocks being offset from the first continuous sequence in a down-track direction by a minimum block offset, the minimum block offset representing at least a number of physical blocks on the storage medium that rotate below a read/write element of the storage device during a time that the read/write element is moved from the first data track to the second data track.

Abstract: Aspects of the disclosure are directed to apparatuses and methods involving an apparatus operable for read/write access to data storage media. As may be consistent with one or more embodiments, a hard disc drive apparatus includes respective e-blocks mounted in different corners of an enclosure (e.g., base deck) having storage media therein. Each e-block has one or more actuator arms having a read/write head thereon and a voice coil that rotates the actuator arm about an axis. The respective e-blocks are operable for read/write access to different regions of the storage media (e.g., with a longer actuator arm utilized for accessing an inner region of disc media, and a shorter actuator arm utilized for accessing an outer region of disc media). The number, size and rotational limits of the respective e-blocks are utilized to facilitate the use of a compact enclosure design while achieving high-speed data access.

Abstract: An actuator pivot shaft assembly for a multi-actuator data storage device may include one or more annular grooves extending radially inward from an outer surface of the pivot shaft, thereby desirably weakening or structurally decoupling the shaft between the actuators, to assist with inhibiting transmission of vibration between the actuators during operation. The shaft assembly may further include an elastomeric damper positioned within the annular groove(s), to damp transmission of vibrational forces between the actuators through the shared shaft.

Abstract: A thrust compensation system of a dual-winding voice coil motor, which is used for driving the voice coil motor having main windings (100) and secondary windings (200), wherein the secondary windings (200) of the voice coil motor are between each pair of the main windings (100).

Abstract: A thrust compensation system of a dual-winding voice coil motor, which is used for driving the voice coil motor having secondary windings arranged between each pair of main windings, wherein the main windings are the main working windings of the voice coil motor and used for providing the output electromagnetic force required by the driving system of the voice coil motor; the secondary windings are compensation windings and used for providing the thrust ripple opposite to the main windings and compensating the thrust ripple of the main windings, so that the resultant force of the output thrust of the main windings and the secondary windings of the voice coil motor is constant.

Abstract: A composite single structured hard disk drive, comprising: a machine casing having a power port and two signal I/O (input/output) ports at an outer surface thereof; an interior of the machine casing having a driving unit which is electrically connected to the power port; the driving unit being able to rotatably drive at least one recoding disk; two read/write modules (R/W modules) being installed, respectively, each R/W module having a rotatable arm set and a dynamic unit connected to the rotatable arm set; one end the rotatable arm set having at least one R/W head at a front end thereof; another end of the rotatable arm set having no the R/W head is connected to the dynamic unit; the dynamic unit being connected to the power port and being controlled by a processor in the substrate in the machine casing.

Abstract: A high-speed disk drive system that features significant performance improvements over previously available systems. By immediately fetching the data as soon as heads reach the destination cylinder, internally stripping the data across the surfaces and plurality of read/write heads on every surface the data transfer speeds many times depending on other characteristics of the system. By implementing plurality of read/write heads and internal parity surfaces or distributed parity blocks/zones the system achieves higher reliability (fault resistance) with head and surface fail-over fail-safing.

Abstract: A multiple actuator disk drive is disclosed. The mechanical vibration in one actuator induced by motion in the second actuator is greatly reduced by providing an independent bearing shaft for each actuator. The bearing shafts are mounted substantially along the same geometric axis.

Abstract: A microactuation system selectively alters a position of a transducing head carried by a slider in a disc drive system with respect to a track of a rotatable disk having a plurality of concentric tracks. The disc drive system includes a load beam and a base for attachment to an actuator arm and a suspension for supporting the slider over the rotatable disc. The microactuation system includes a piezoelectric element attached between the actuator arm and the load beam and a beam connecting a stationary portion of the load beam to a moving portion of the load beam. The piezoelectric element is deformable in response to a voltage applied thereto. The beams are sufficiently compliant to permit movement of the moving portion of the load beam with respect to the stationary portion of the load beam upon deformation of the piezoelectric element.

Abstract: A micro disc drive assembly includes a wafer-level actuator arm, a wafer-level suspension connected to the actuator arm, and a head-carrying slider supported by the suspension over a rotatable disc. A microactuator motor is located between the actuator arm and the suspension, and is operable to move the suspension with respect to the actuator arm to position the head-carrying slider adjacent to a selected track of the rotatable disc. By forming the actuator arm and suspension at the wafer level, significant size reductions can be made, and the stiffness of the arm and resonant frequency of the disc drive are increased. A main actuator may also be provided in one embodiment, formed at the wafer level and including coils deposited on a wafer substrate, to coarsely position the actuator arm, suspension and head-carrying slider adjacent to the selected track of the rotatable disc.

Abstract: A disc drive implementing a dual-stage actuation system having an improved scheme for electrically interconnecting a transducing head to a flexure includes a support structure supporting a slider in proximity to a surface of a rotatable disc. The support structure is coarsely positionable by a main actuator. A microactuator is also provided, including a stator attached to the support structure and a rotor operatively attached to the slider. The rotor is connected to the stator by at least one flexible beam. A first electrical interconnect is formed between the support structure and the stator of the microactuator. A conductive trace is formed on the flexible beam between the stator and the rotor of the microactuator. A second electrical interconnect is formed between the rotor of the microactuator and at least one bond pad on the slider electrically connected to the transducing head.