Matches 1 - 46 out of 46


Match Document Document Title
US20130222944 Adaptive Seek Latency  
The disclosure is related to systems and methods for adaptive seek latency in a rotating storage device. In one example, a servo control circuit can be configured to determine a seek latency and...
US20100007986 SETTING WRITER BOUNDARIES FOR MULTIPLE WRITERS  
A storage medium having a boundary located along a surface of the storage medium that functions as a transition point for selectively operating a first writer and a second writer of a plurality of...
US20150092297 PROTECTION OF A MAGNETIC DISK UNIT ON A PORTABLE COMPUTING DEVICE  
A portable computing device prevents a magnetic disk unit protecting function from impairing usability for a user when the processor is used as a tablet PC. The portable computing device includes...
US20070268618 REGULATING READ/WRITE TRANSDUCER MOVEMENT RESPONSIVE TO ACOUSTICS  
Various methods and circuits are described for controlling movement of a read/write transducer. The acoustics that are generated when moving a read/write transducer are detected. Movement of the...
US20060056092 System for microjog calibration by read-write zone  
Embodiments of the present invention relate to systems, methods, and computer readable media for calibrating storage devices such as hard drives. Storage devices include storage media that are...
US20060221488 Multi-disk simultaneous servo writing device  
One embodiment of the present invention is a servo writing device that includes: (a) an actuator; (b) a first pushpin block that is coupled to a first side of the actuator and is adapted to drive...
US20110080672 METHOD FOR WRITING SERVO DATA TO A DISK AND DISK DRIVE CONFIGURED TO WRITE SERVO DATA UTILIZING THE METHOD  
A method for writing servo sector sets that include a plurality of separate servo sectors on a disk so that servo sectors are present at same circumferential positions but different radial...
US20100053802 Low Power Disk-Drive Motor Driver  
One embodiment of the invention includes a disk-drive motor control system. The system comprises a seek mode power supply configured to provide a first voltage corresponding to a seek mode...
US20120243119 MAGNETIC DISK DRIVE HAVING MICROACTUATOR  
According to one embodiment, a servo controller of a magnetic disk drive includes a microactuator (MA) estimator, VCM actuator (VCMA) controller, a filter and an adder. The MA estimator estimates...
US20140063651 SUPPRESSION OF SEEK REPEATABLE RUNOUT  
The disclosure is related to an apparatus and methods of suppressing seek repeatable runout. In a particular embodiment, a servo loop is disclosed. The servo loop includes a seek signal generation...
US20060103972 Flexible data TPI in hard disk drives  
A hard disk drive with a disk that has a plurality of servo sections and a plurality of data sections. At least some of the data sections have a track density different than the track density of...
US20070206317 Radial position seek tuning for acoustic performance  
Examples of the present invention relate to reduction in acoustic noise by tuning seek characteristics of a servo controller, depending on a radial position of a head relative to a disk. The servo...
US20070291401 CONTACT DETECTION USING CALIBRATED SEEKS  
Embodiments of the present invention allow for detection of contact between a sensor, such as a data read/write head, and a surface, such as the magnetic surface of a disc. An actuator may be...
US20140313612 SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME  
There are provided a spindle motor and a hard disk drive including the same. The spindle motor includes: a sleeve supporting a shaft so that an upper end of the shaft protrudes upwardly in an...
US20050201003 Magnetic disk drive  
In order to achieve narrow track pitch by measuring, storing and compensating common average values for repeatable runout components between adjacent tracks in a head positioning control system...
US20080080085 Large shock particle mitigation  
A system is capable of detecting a “large” shock. In contrast to just any shock, a large shock exceeds some threshold of magnitude or duration and may generate particles and/or the deposit of...
US20090122442 ANTICIPATORY TRACK SWITCHING  
Various embodiments of the present invention are generally directed to using a transducer to transfer data during a transducer displacement operation at a time during such operation when the...
US20140293478 SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME  
There are provided a spindle motor and a hard disk drive including the same. The spindle motor includes: a sleeve installed on a base member and having a circulation hole; a shaft inserted into...
US20140293477 SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME  
There are provided a spindle motor and a hard disk drive including the same. The spindle motor includes a sleeve fixedly installed on a base member and including a circulation hole formed in an...
US20070268619 ANGULARLY SPACED SPIRAL ERASE FOR MEDIA  
Embodiments of the present invention allow for media erasure. Various embodiments allow for controlling an actuator based on feedback signal measurements and disk phase to seek a head across a...
US20090091148 Chip card receiving device comprising a carriage for holding a chip card  
A chip-card-receiving device has a carriage for holding a chip card, means for fixing and releasing a chip card, and a clamping element. The carriage is displaceably mounted between an...
US20110026160 SERVO PATTERN WRITING METHOD, CONTROL CIRCUIT, AND MAGNETIC DISK APPARATUS  
According to one embodiment, a servo pattern writing method includes: moving a head from a first one of innermost and outermost circumferences of a medium to the remainder other than the first one...
US20140177095 SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME  
There is provided a spindle motor, including: a shaft having a fixing groove formed in a lower portion thereof; a lower thrust member including a fixing part inserted into the fixing groove, a...
US20070263317 Method and apparatus for balanced dual stage actuators in a head stack assembly of a hard disk drive  
Head stack assembly coupling at least two micro-actuators sharing lateral control signal. Any two adjacent micro-actuators respond to lateral control signal by opposite lateral directions. With...
US20050152058 Systems for tighter thresholds in rotatable storage media  
Systems and methods in accordance with embodiments can be used to execute data transfer operations in systems and devices including rotatable storage media, such as hard disk drives. During a data...
US20130135768 PATTERNED MAGNETIC RECORDING DISK FOR MULTI-TRACK RECORDING WITH COMPENSATION FOR HEAD SKEW, AND MASTER TEMPLATE FOR NANOIMPRINTING THE DISK  
The invention is a patterned-media disks for multi-track recording that are fabricated by nanoimprinting from a master template and that have data islands arranged in a pattern to compensate for...
US20140177096 BASE ASSEMBLY AND RECORDING DISK DRIVING DEVICE HAVING THE SAME  
There is provided a base assembly including: a base member having a disk accommodating part onto which a disk is insertedly disposed; and a filter member installed on the base member so as to be...
US20050052777 Method and apparatus for positioning head using servo burst signals in a disk drive  
There is disclosed a disk drive using a disk in which servo data is recorded, wherein a CPU executes control to position a head by use of a servo burst calculation result and a difference value...
US20070019321 Method and apparatus for suppressing resonance of hard disk drive using notch filter  
The resonance of a hard disk drive using a notch filter is suppressed by detecting a resonance frequency after a far distance search is conducted, in a state in which the notch filter is disabled,...
US20140078611 Method and System for Preventing Unreliable Data Operations at Cold Temperatures  
Systems and methods for reducing problems and disadvantages associated with protecting data during cold excursions are provided. A method for preventing unreliable data operations at cold...
US20070217059 Storage device, control device, and control method  
Data access is performed to a storage medium having storage areas each having a data portion in that data is stored and an attached portion attached to the data portion. Each attached portion has...
US20140036387 MICROWAVE ASSISTED MAGNETIC RECORDING HEAD HAVING SPIN TORQUE OSCILLATOR, AND MAGNETIC RECORDING APPARATUS  
To provide a spin torque oscillator which is adapted to high data transfer rates and which can perform assisted magnetic recording of sufficient magnitude. A spin torque oscillator is provided...
US20070263314 Apparatus and method for head gimbal assembly sharing power to slider amplifier and micro-actuator in a hard disk drive  
The head gimbal assembly includes a slider and a micro-actuator assembly sharing power for the micro-actuator assembly to aid in positioning the slider and for an amplifier included in the slider...
US20100232058 INFORMATION RECORDING MEDIUM GLASS SUBSTRATE, INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS AND MANUFACTURING METHOD OF INFORMATION RECORDING MEDIUM GLASS SUBSTRATE  
In an information recording apparatus such as a hard disk drive, a ramp for retreating its head from a recording medium when the apparatus is stopped is provided opposing the information recording...
US20100232057 Techniques For Storing Shingle Blocks in a Cache Memory Using a Data Storage Device  
A data storage apparatus includes a data storage medium, a write element, a non-volatile cache memory circuit, and a controller circuit. The controller circuit is configured to record data on the...
US20100177418 WRITER AND READER CENTER ALIGNMENT WITH SERVO AND DATA TRACK IN DISCRETE TRACK RECORDING  
A hard disk drive with a patterned disk that has a discrete track. The disk drive includes a controller that controls a head and a voice coil motor to optimize a writing of information onto the...
US20160140990 MAGNETIC DISK DEVICE AND METHOD OF CONTROLLING MAGNETIC DISK DEVICE  
According to one embodiment, a method of controlling a magnetic disk device, includes acquiring a retry rate indicating a ratio of the number of retries to the number of seeks for a seek distance...
US20160125902 MAGNETIC DISK DEVICE AND CONTROL METHOD  
According to one embodiment, there is provided a magnetic disk device including a casing, a seek mechanism, and a controller. The seek mechanism is attached to the casing and configured to make a...
US20160118072 Enlarged Substrate for Magnetic Recording Medium  
An enlarged substrate for a magnetic recording medium used in a data storage device such as a hard disc drive (HDD). In some embodiments, a data storage device has a housing member for a 3½ inch...
US20160111114 Self-Cleaning Recording Heads Based On Actuator Seek Profile  
Cleaning a recording head slider in-drive during operation is accomplished by periodically performing a series of full stroke seek operations, whereby liquid contaminants that may have migrated to...
US20160104504 DATA STORAGE DEVICE GENERATING AN OPERATING SEEK TIME PROFILE AS A FUNCTION OF A BASE SEEK TIME PROFILE  
A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks. An operating seek time profile is generated as a function of a base seek time profile,...
US20150364149 ENLARGED SUBSTRATE FOR MAGNETIC RECORDING MEDIUM  
An enlarged substrate for a magnetic recording medium used in a data storage device such as a hard disc drive (HDD). In some embodiments, an apparatus includes a substrate for a magnetic recording...
US20130329317 Magnetic Recording Head and Magnetic Recording Apparatus  
An example magnetic writing head includes a main magnetic pole and a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to...
US20130329316 MICROWAVE ASSISTED MAGNETIC RECORDING HEAD AND MAGNETIC DATA STORAGE APPARATUS  
To suppress a spread of not only a recording magnetic field generated from a main pole but also a high-frequency magnetic field generated from a spin torque oscillator in a microwave assisted...
US20120194946 INFORMATION RECORDING DEVICE AND INFORMATION RECORDING METHOD  
According to one embodiment, an information recording device includes: a recording controller configured to control recording of information on a magnetic recording medium having tracks by a...
US20120069466 APPARATUS OF 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...

Matches 1 - 46 out of 46