Matches 1 - 50 out of 62 1 2 >


Match Document Document Title
US20140233362 INFORMATION DEVICE  
An information device includes a slider (100) including a first metal antenna (103a), a second metal antenna (103b), and a heater (107) configured to vary the distance between the first metal...
US20110292541 DISK-ENCLOSURE COVER FOR LOW-PROFILE, HARD-DISK DRIVE  
A disk-enclosure cover for a low-profile, hard-disk drive (HDD). The disk-enclosure cover includes a substantially flat, plate-like portion that includes a periphery, and a peripheral flange that...
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...
US20060109585 Method and apparatus using micro-actuator stroke sensitivity estimates in a hard disk drive  
Operating micro-actuator using stroke sensitivity estimate including controlling micro-actuator directing read-write head toward track using stroke sensitivity to create micro-actuator stimulus...
US20120019957 METHOD OF MEASURING NON-COHERENT RUNOUT FOR A DISK DRIVE  
In a disk drive, a modified adaptive runout compensation algorithm is employed to measure non-coherent repeatable runout (RRO) of a track. The adaptive runout compensation algorithm is used to...
US20080291567 Post-assembly head/disk offset adjuster  
A post-assembly head/disk offset adjuster is disclosed. One embodiment provides a housing and at least one disk coupled with the housing. In addition, an adjustable pivot plate is coupled with the...
US20090207521 TECHNIQUES FOR IMPROVING PARALLEL SCAN OPERATIONS  
Various technologies and techniques are disclosed for improving performance of parallel scans. Disk head randomization that occurs when performing a parallel scan is minimized by assigning a...
US20120281310 DETERMINING MICROACTUATOR FAILURE IN A MULTI-STAGE TRACKING SYSTEM  
A multi-stage tracking control system includes at least a main actuator and a microactuator. The tracking control system is switched to a single-stage mode so that the main actuator alone provides...
US20090122439 Mitigating the effects of disturbances of a disk drive  
Embodiments of mitigating the effects of disturbances of a disk drive are disclosed. One method includes sensing a position error signal of a transducer coupled to a surface of the disk drive,...
US20100079903 ADAPTIVE DATA RECOVERY PROCEDURE BASED ON RADIAL POSITIONING  
Data recovery information characterizes data recovery procedure (DRP) steps to be performed within a hard disk drive (HDD) in response to a miss. Particular data recovery information corresponds...
US20110141617 METHOD AND APPARATUS FOR MEASURING DISK RUNOUT IN A DISK DRIVE  
According to one embodiment, a disk drive includes an actuator, a servo controller, a calculation module and an adjustment module. The actuator is configured to move the head over a disk, in the...
US20090244767 CONTROLLER FOR A POSITIONING DEVICE, METHOD FOR CONTROLLING A POSITIONING DEVICE, POSITIONING DEVICE, AND LITHOGRAPHIC APPARATUS PROVIDED WITH A POSITIONING DEVICE  
A controller for a positioning device is constructed and arranged to receive a position signal indicative of a position of the positioning device, compare the position signal to a set-point signal...
US20100271731 UNEQUAL ZONING FOR TRACK FOLLOWING ON A HARD DISK DRIVE  
Unequal zoning for track following on a hard disk drive comprising at least one magnetic disk, a read/write head connected to at least one actuator arm and capable of reading and writing data on...
US20060012912 Method of protecting hard disk drive from shocks and hard disk drive therefor  
Provided are a method of protecting a head and a disk in a HDD from shocks and an apparatus therefor by detecting the movement of the HDD using the amount of jitter in servo signals and unloading...
US20060103969 System and apparatus for position error signal linearization  
A hard disk drive that utilizes a plurality of integrated gain compensation values to correct a non-linear position error signal (PES) function of the drive. The gain compensation values are...
US20100073808 POSITION SENSING IN DISCRETE TRACK RECORDING  
In a particular embodiment, a storage system is disclosed that includes a discrete track media having a plurality of concentric data tracks to store data and including a respective plurality of...
US20090310249 WRITE-ONCE TYPE STORAGE APPARATUS, CONTROL CIRCUIT, AND CONTROL METHOD  
A recording processing unit sets a track pitch narrower than a writing width of a recording element so that part of the recorded track overlapped with the unused track is overwritten, and...
US20090103204 BIT PATTERNED MEDIUM HAVING SUPER-TRACK, METHOD OF TRACKING TRACK OF BIT PATTERNED MEDIUM, HEAD APPROPRIATE FOR BIT PATTERNED MEDIUM, AND INFORMATION RECORDING/REPRODUCING APPARATUS INCLUDING BIT PATTERNED MEDIUM HEAD  
Provided are a bit patterned medium having a super-track, a method of tracking a track of the bit patterned medium, a head appropriate for the bit patterned medium, and an information...
US20100073809 X-AMR ASSISTED RECORDING ON HIGH DENSITY BPM MEDIA  
A method of writing information to an area of a bit-patterned medium, in which a magnetized probe generates a magnetic probe field at the area of bit-patterned medium to be written, applying an...
US20120194945 COMPENSATION FOR CROSS-TRACK DEVIATION  
Cross-track deviation of a writer from a predetermined track on a recording medium is detected. A write current is adjusted based on the cross-track deviation of the writer from the predetermined...
US20090268338 DATA STORAGE DISK HAVING VARIABLE LOCATION SIGNAL AND DISK DRIVE USING THE DATA STORATE DISK  
A hard disk drive includes a magnetic head, at least one disk and a controller. A location signal is recorded on the at least one disk for determining a location of the magnetic head in relation...
US20080273260 Method and apparatus for detecting proximity contact between a transducer and a medium  
A method and apparatus are provided for positioning a transducer relative to a track of a data storage medium and inducing lateral modulation of transducer the relative to the track. An element of...
US20090153998 STORAGE MEDIUM REPRODUCING APPARATUS AND STORAGE MEDIUM REPRODUCING METHOD  
A storage medium reproducing apparatus includes a storage medium that records data; a reproducing head that reads the data recorded in the storage medium; a positioning controlling unit that...
US20120069465 SPIN TORQUE OSCILLATOR AND MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING DEVICE MOUNTED WITH THE SPIN TORQUE OSCILLATOR  
The present invention provides a spin torque oscillator that can realize stable oscillation and has high reliability. A laminated structure including a first magnetic layer 1 having a bcc crystal...
US20090201602 LONG-TERM ASYMMETRY TRACKING IN MAGNETIC RECORDING DEVICES  
A technique tracks head asymmetry of a magnetic recording device over time. In particular, a reference pattern having a known fundamental/reference frequency may be read from a reserved track of a...
US20150116862 Data Storage Device with HGSA Offset Compensation  
A data storage device may be configured at least with an actuating assembly that has a head-gimbal suspension assembly (HGSA), first pivot point, and second pivot point. The head-gimbal assembly...
US20090180207 HARD DISK DRIVE AND METHOD OF CONTROLLING AUTO REASSIGN OF THE SAME  
A method of controlling auto reassign of a hard disk drive, including measuring a position error signal (PES) value from at least one sample track of a disk when a fault is generated in a...
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...
US20090268337 METHOD AND APPARATUS FOR DETERMINING OFFSET BETWEEN READ HEAD AND WRITE HEAD IN A DISK DRIVE  
According to one embodiment, a disk drive is disclosed which has an offset measuring function for measuring a dynamic offset value necessary to a dynamic offset control using a DTM type disk. A...
US20090168224 METHOD AND APPARATUS FOR OFFSET CONTROL IN A DISK DRIVE  
According to one embodiment, there is provided a disk drive that can perform dynamic offset control (DOC). The disk drive has a magnetic head, a disk, and offset calculating modules. The magnetic...
US20140049854 METHOD AND SYSTEM FOR READING FROM OR WRITING TO MULTIPLE SURFACES OF A DISK  
A system includes a management module transferring sectors between an interface or a memory and ports. The management module transfers a first portion of a first sector to or from a first port...
US20100020435 RECORDING DEVICE WITH WRITE HEAD SPANNING MULTIPLE ROWS OF BIT CELLS AND MULTI-SENSOR READ HEAD  
In a recording device, a bit patterned medium comprises a track of bit cells, each settable to one of two distinct bit states. The track comprises two generally parallel rows of bit cells. The bit...
US20100142084 MAGNETIC MEDIUM HAVING AN ARTIFICIAL PATTERN STRUCTURE USING A GRADIENT OF A MAGNETIZATION REVERSAL FIELD AND A METHOD OF USE THEREOF  
To avoid the occurrence of a recording error by suppressing the influence that a magneto-static interaction acting between the pattern dots exerts on a recording process and expand a margin for...
US20100134917 METHOD AND APPARATUS FOR OFFSET CONTROL IN A DISK DRIVE  
According to one embodiment, a disk drive capable of performing a dynamic offset control (DOC) is provided. The disk drive has an offset module and an updating module. The offset module calculates...
US20100020434 METHOD FOR PRODUCTION OF MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCTION DEVICE  
A method for the production of a magnetic recording medium includes the steps of forming a magnetic layer on a nonmagnetic substrate, injecting atoms into portions of the magnetic layer to cause...
US20070211368 Magnetic recording medium, magnetic recording apparatus, and servo demodulation circuit  
A signal is recorded on a magnetic recording medium by changing a magnetized state of a magnetic member. The magnetic recording medium includes a plurality of servo signal areas in which servo...
US20100302675 STORAGE MEDIUM AND METHOD AND PROGRAM FOR DETECTING TRACK POSITION OF STORAGE MEDIUM  
According to one embodiment, a storage medium that stores position information indicating positions of a plurality of tracks in a radial direction in the tracks, wherein the position information...
US20120182643 Systems and Methods for Reduced Format Data Processing  
Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide data processing circuits that include a...
US20110310506 MAGNETIC DISK DEVICE AND HEAD POSITION CONTROL METHOD  
According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head, a position error signal output module, a vibration pattern detector, an adder, and a head positioning...
US20100007985 METHOD FOR PRODUCING MAGNETIC MEDIUM, MAGNETIC RECORD REPRODUCTION DEVICE, AND MAGNETIC RECORDING MEDIUM  
One object of the present invention is to provide a method for producing a magnetic recording medium which has excellent magnetic separation properties of the magnetic recording pattern, the...
US20140211339 WRITE PRECOMPENSATION FOR HEAD MISALIGNMENT  
Misalignment of a transducer head over a bit-patterned media (BPM) may cause a bit to experience conflicting magnetization forces from the writer, resulting in improperly written data and stored...
US20100149683 MAGNETIC DISK DRIVE AND WRITE OFFSET CORRECTION METHOD THEREIN  
According to one embodiment, a magnetic disk drive uses a patterned medium on which data tracks having a recording layer and grooves having no recording layer as a disk. The magnetic disk drive...
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...
US20150109700 SHINGLED MAGNETIC RECORDING SYSTEM WITH ADAPTIVE WRITE BUFFER AREA  
Techniques for writing data to a buffer region of a magnetic disk are described. In one example, a hard disk drive comprises a magnetic disk comprising a data buffer region including a first zone...
US20100232056 METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING DEVICE  
Provided is a process for manufacturing a magnetic recording medium having a magnetically partitioned magnetic recording patterns, which comprises the following steps, conducted in the order: (1)...
US20100220409 MAGNETIC STORAGE MEDIUM, INFORMATION STORAGE DEVICE, AND CONTROL DEVICE  
According to one embodiment, a magnetic storage medium, includes a magnetic recording layer that includes: a servo area including predetermined servo information; a user data area including...
US20100214687 STORAGE DEVICE AND READ/WRITE PROCESSING METHOD THEREFOR  
According to one embodiment, a storage device includes: a control circuit configured to perform a write retry when data writing fails, wherein the control circuit recognizes that read commands are...
US20100214686 HEAD POSITIONING METHOD FOR ECCENTRIC TRACK AND HEAD POSITIONING CONTROL DEVICE  
Drive waveforms with which extension and contraction characteristics of an actuator corresponding to a number of track eccentricity amounts are stored as data. By reading servo information written...
US20100195244 SERVO AREA TEST METHOD OF A MAGNETIC RECORDING MEDIUM AND A TEST DEVICE  
A read signal for one revolution of each of a plurality of tracks jitter of which is cancelled is obtained and a binary-coded image data for the read signal is generated and the track number...
US20100027158 Magnetic head for high-frequency field assist recording and magnetic recording apparatus using magnetic head for high-frequency field assist recording  
A magnetic recording head includes: a magnetic pole; a magnetic shield forming a magnetic circuit with the magnetic pole; and a spin torque oscillator provided between the magnetic pole and the...

Matches 1 - 50 out of 62 1 2 >