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9025261 Writing and reading data in tape media  
A mechanism is provided for determining storage device speed based on a ratio of data compression. A bandwidth (B) is identified between a storage device accessing storage medium and a host...
8982500 Controlling the transport of a tape within a tape transport system  
A control device for controlling tape transport within a tape transport system is disclosed. The control device includes a determination unit, which includes at least a first servo channel and a...
8982502 Hard disk drive with write assist based on detected conditions  
In one embodiment, a hard disk drive includes a magnetic disk medium, a magnetic head adapted for writing data to the magnetic disk medium, a mechanism (such as a detection circuit) adapted for...
8964327 Tape storage device, data writing method, and program  
A tape drive receives multiple write requests for data pieces and a synchronization request corresponding to the write requests from a device, performs a synchronization process, and returns a...
8941940 Utilizing stored write environment conditions for read error recovery  
Described herein are embodiments for utilizing stored write environment conditions for read error recovery. A tape drive measures read environment conditions as a result of receiving a read...
8922936 Apparatus of single write magnetic disc  
An object of the present invention is to further improve a recording density in a magnetic disk apparatus using a shingle write system. In a magnetic disk apparatus including a magnetic disk, a...
8917471 Power management for data storage device  
A data storage device (DSD) enters a high spindle suppression (HSS) mode to reduce instances of rotation of a spindle motor of the DSD during the HSS mode. When a read command is received from a...
8908313 Transport system for transporting magnetic tape  
A transport system for transporting magnetic tape includes at least one roller for guiding the magnetic tape having at least one electrode and a controller being configured to apply a voltage to...
8896958 Tape width measurements  
A tape drive is disclosed. The tape drive determines a current tape width and writes data to the tape as well as the current tape width. The tape width written to the tape is associated with the...
8879180 System, method and apparatus for data track usage sequence to reduce adjacent track interference effect  
Storing data in a hard disk drive may include determining a percentage of storage usage (SU %) of the data tracks. If the SU % is less than a first threshold percentage (TP1), the method may...
8867161 Shingled magnetic recording with variable track spacing  
Apparatus and method for writing data to a data storage medium using shingled magnetic recording (SMR). In accordance with some embodiments, a transducer is positioned adjacent a recording medium....
8861121 Closed loop control of tape media positioning within tape drive using position error signal feedback  
A control system for a tape drive that uses position error signals (PESs) generated by a tape head assembly of the tape drive during longitudinal movement of a tape through the drive to...
8848310 Offset correction values on a data storage media  
A memory system includes a storage medium having tracks arranged on the storage medium. The tracks include data track portions configured to store data. The tracks have a data track width and...
8824089 Tape cartridge and tape device  
A tape cartridge includes a drive gear that is rotatably driven by a driving device, a first reel that winds a first tape-like storage medium therearound and is rotatable by a driving force...
8817415 Erasure of magnetic storage media having perpendicular anisotropy  
Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent...
8810956 Technique for optimizing skew in the presence of tape motion  
A method for accurately adjusting skew in the presence of tape motion includes performing a calibration run of magnetic tape in a tape drive. During the calibration run, the method records skew...
8804267 Disk drive predicting spindle motor failure by evaluating current draw relative to temperature  
A disk drive is disclosed comprising a head actuated over a disk, and a spindle motor operable to rotate the disk. A baseline relationship is generated between a baseline current draw of the...
8797672 Dynamic track pitch control for shingled magnetic recording (SMR)  
SMR disk drives are described that adjust track pitch or magnetic write width to compensate for external temperature effects. In one embodiment track pitch is increased when the media temperature...
8791657 Disk drive  
To provide a disk drive capable of inhibiting the occurrence of acoustic noise caused by a voltage pulse when the head is retracted using a speed control method using voltage obtained by...
8786219 Motor control device  
A motor control device includes: a feedforward computing section for computing a motion reference value and a feedforward driving force based on a motion command; a deviation compensation...
8786974 Method and apparatus for controlling a motor  
A method and apparatus for adaptively controlling a motor considering a state of disturbance applied to a system. The method includes changing a frequency bandwidth of a frequency response...
8780471 Linking errors to particular tapes or particular tape drives  
Techniques to determine particular bad tapes or tape drives. All tape and tape drive combinations within a system may be obtained. A read error or a write error that occurs with each tape and tape...
8780483 Automatic unthread and store of data storage device medium  
An apparatus, system, and method for automatic unthreading and storage of storage media helps prevent damage to the media, which can otherwise occur when the storage media is left threaded in a...
8767335 Accurate radius and velocity measurement of tape transports  
A method according to one embodiment includes selecting an initial radius value (Rfull) for an outgoing reel, where Rfull is the initial radius of a tape on the outgoing reel; unwinding the tape...
8767330 Tape cartridge auxiliary memory based library  
A data storage library is described including a plurality of tape cartridges wherein each of the tape cartridges possesses an auxiliary radio frequency memory device in which auxiliary digital...
8767336 Head wrap procedure  
A method according to one embodiment includes detecting a signal originating from at least one reader of a first outer module of a head as a tape passes thereacross, the head having at least the...
8654475 Stampers and magnetic disks  
A stamper according to an embodiment includes a guide including: a first portion provided in regions to be boundaries between the servo region and the data regions in the bit-patterned medium, the...
8493682 Head wrap procedure  
According to one embodiment, a method includes tracking a magnetic tape moving in a first direction using at least one reader of an inner module of a head having at least the inner module and...
8488266 Adjustment of tape reel height  
One embodiment is tape drive that includes a take-tip reel onto which tape is wound. A height adjustment assembly adjusts a height of the take-up reel while the tape is being unwound from the...
8458391 Library apparatus and method for controlling the same  
A library apparatus includes a medium name storage unit that stores medium name conversion information in which a virtual medium name specifying a storage medium in a read/write request from a...
8373941 Automatic unthread to secure tape from sticking to the head  
A system and method for automatically unthreading a tape. The system and method determine whether the drive being at the stop state could cause the tape sticking condition in future after a...
8363345 Apparatus, system, and method for automatic unthread and store of data storage device medium  
An apparatus, system, and method for automatic unthreading and storage of storage media helps prevent damage to the media, which can otherwise occur when the storage media is left threaded in a...
8339726 Unique media identifier  
An apparatus and method for providing a unique identifier for data storage media is disclosed herein. The servo track of the data storage media is encoded one or more times with media...
8228629 Reaction control charge pump, capacitor, and transistor to power lead  
The objective of this invention is to provide a motor control device, and a disk drive device using the same, in which during emergency operation it is possible to supply necessary power to the...
8212503 Driving circuit for voice coil motor and method thereof  
The invention provides a driving circuit for a voice coil motor. In one embodiment, the driving circuit includes a logic circuit, a digital-to-analog converter, and an output circuit. The logic...
8208215 Techniques for emulating sequential device with constrained disk drive  
A disk drive apparatus includes at least one disk, a head-arm assembly, and a controller circuit. The head arm assembly includes at least one read/write head. The head-arm assembly is movable to...
8155498 System and method for indexing commercials in a video presentation  
Systems and methods for providing enhanced navigation of stored digital video content based upon an event index. Includes generation and storage of an event index, as well as navigation based on...
8154826 Thin-film magnetic head with variable-volume cavity in medium-opposed surface  
Provided is a thin-film magnetic head in which the magnetic spacing can be appropriately controlled by dynamically and accordingly, by adjusting the pressure working between the thin-film magnetic...
8144416 Hard disk driving circuit and method of driving spindle motor  
A hard disk driving circuit for reducing a maximum amount of current for driving a spindle motor, and a method of driving the spindle motor. The hard disk driving circuit include spindle motor, a...
8094402 Systems and methods for correcting magnetic tape dimensional instability  
Magnetic tape devices encounter read and/or write errors when the tape is not being passed across the head with the proper tension and/or skew angle. According to one embodiment, a system which...
8077420 Method and apparatus for adaptive control and/or use of a vibration sensor in a hard disk drive  
Apparatus and methods are disclosed for adaptive control and/or use of a vibration sensor in a hard disk drive (HDD). The HDD, an assembled circuit board and a control circuit are disclosed. The...
8064155 Storage apparatus  
A storage apparatus includes a magnetic storage medium which is formed with a data portion based on isolated magnetic dots and a servo pattern portion, a drive mechanism which drives the storage...
8045282 Measurement of track eccentricity on bit patterned media  
The eccentricity of tracks defined on a rotating bit patterned media are measured using a readback signal, and the measured eccentricity may be used to control centering of the disk relative to a...
8041449 Bulk feeding disk drives to disk drive testing systems  
A method of supplying disk drives to a disk drive testing system includes placing a disk drive tote, carrying multiple disk drives, in a presentation position accessible to an automated...
8019926 Automatically assigning a multi-dimensional physical address to a data storage device  
A method of assigning a multi-dimensional physical address to a tape-based data storage device is provided. The method includes accessing a first signal from a first communication path...
8009063 Audio system and navigation device  
An audio system for a vehicle includes: a hard disk drive for storing an audio data; an output element for converting the audio data to an electric signal and for outputting the electric signal to...
7995302 Disk drive device and control method of unloading corresponding to fall detection in disk drive device  
Embodiments of the present invention improve the safety against a fall of a disk drive device. In one embodiment, when an HDD has recognized detection result data of a fall sensor to indicate a...
7995303 Overhead calculation in writing synchronized data to magnetic tape  
Various embodiments for writing received synchronized data to magnetic tape having a plurality of wraps using a magnetic tape drive adapted for performing the writing according to an available...
7990649 Method and apparatus to set a wrap angle of a read/write head  
A method is presented for setting a wrap angle of a read/write head having a servo element and multiple read elements, where the servo element and the read elements can detect a servo signal. The...
7986482 Applying whip effect to magnetic tape exhibiting a tape stick condition  
As the result of a tape stick condition of magnetic tape with respect to a tape head, the supply reel and the take-up reel apply a base tension to the magnetic tape therebetween of substantially...