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US20110188144 SERVO ROUTINE FOR TRACK SEEKING IN A HARD DISK DRIVE AND HARD DISK DRIVE FOR PERFORMING THE SAME  
A method for controlling a hard disk drive, includes a track seeking servo routine in which seek time is measured in a mode of the routine after the trajectory mode, the measured seek time is...
US20110317303 MAGNETIC DISK DRIVE AND METHOD FOR ADJUSTING PARAMETER IN THE SAME  
According to one embodiment, a magnetic disk drive includes a parameter management table, a parameter adjustment module and an interpolation module. The parameter management table stores a...
US20140168806 Disk Drive Write-Inhibit Control Using Adaptive PES Predictor  
Disk drives are described with a write inhibit control system with an adaptive head position predictor, e. g. an adaptive FIR filter, that includes a set of coefficients (weights) that are updated...
US20130335842 METHOD FOR DETERMINING WHETHER DEFECT ON DISK IS RECESS OR PROTRUSION AND MAGNETIC DISK DRIVE  
According to one embodiment, there is provided a method for determining whether a defect on a disk in an apparatus includes head is a recess or a protrusion. The method detects a first defect on...
US20090153993 Disk Drive Testing  
A disk drive testing system includes at least one robotic arm defining a first axis substantially normal to a floor surface. The robotic arm is operable to rotate through a predetermined arc about...
US20100328802 Servo Write Head Gap Width Correction  
Embodiments include methods, apparatus, and systems for servo write head gap width correction. One method includes measuring a pulse mismatch for servo stripes on magnetic tape written with a servo...
US20080239535 CERTIFYING WHILE SERVOWRITING MEDIA  
Certifying a media while servowriting the media by formatting a full compliment of servo data in storage tracks of the media in a minimum number of passes per storage track while simultaneously...
US20130094104 Head DFH protrusion shape calibration by HDI sensor  
Dynamic fly height (DFH) controlled read/write heads using multiple heaters have their heater powers set within a range of ratios that allows minimum clearances to be set between the read-gap and...
US20120287526 BREAKDOWN PREDICTION DEVICE, BREAKDOWN PREDICTION METHOD, AND BREAKDOWN PREDICTION PROGRAM  
A breakdown prediction device of the present invention includes: a vibration measurement unit that measures vibrations generated from a device being monitored; and a signal processing unit that...
US20100321810 DISK DRIVE CONFIGURED TO CALCULATE HEAD REBOUND DISTANCE  
According to one embodiment, a search module searches for a timing when a moving direction of a head changes in order to detect a first timing when the head collides against a stopper of a ramp...
US20110134557 REAL TIME MONITORING INCONSISTENT OPERATIONS IN A HARD DISK DRIVE  
Real time monitoring inconsistent operations in a hard disk drive, wherein the hard disk drive comprises a magnetic disk, a controller and a channel clock. A timing signal from the channel clock is...
US20120008226 FLY CAPABLE SLIDER TEST SOCKET  
The present application is directed to a slider supporting apparatus for flying a slider of a hard disk drive in the manufacturing process to provide electrical performance characteristics. The...
US20120008225 Fly Capable Slider Test Socket  
The present application is directed to a slider supporting apparatus for flying a slider of a hard disk drive in the manufacturing process to provide electrical performance characteristics. The...
US20110075286 SYSTEM, METHOD AND APPARATUS FOR DETERMINING TRACK PITCH IN A HARD DISK DRIVE TO SATISFY THE REQUIREMENTS OF BOTH OFF-TRACK CAPACITY AND ADJACENT TRACK ERASURE  
Track pitch in a hard disk drive is selected to satisfy the requirements of both off-track capacity (OTC) and adjacent track interference (ATI). The invention separately measures the track pitch...
US20110157736 INTEGRATING CONTROL OF SLIDER BIAS POTENTIAL, TOUCH-DOWN DETECTION AND FLY-HEIGHT DETERMINATION IN A HDD  
A hard disk drive (HDD) including a slider. The slider includes a resistive temperature detector (RTD) configured to detect a temperature generated by one or more of slider spacing and contact with...
US20130229724 CUSTOMIZING A RANGE OF ACCEPTABLE TAPE DIMENSIONAL STABILITY WRITE CONDITIONS  
Described are embodiments of an invention for customizing the range of acceptable write conditions to a tape of a tape cartridge that contracts or expands laterally based on environmental...
US20140016220 Systems and Methods for Hardware Assisted Write Pre-Compensation Enhancement  
Various embodiments of the present invention provide systems and methods for calibrating write pre-compensation values.
US20120033318 PLANAR SLIDER TEST SOCKET  
The present application is directed to a slider supporting apparatus for flying a slider of a hard disk drive in the manufacturing process to provide electrical performance characteristics. The...
US20100007978 DETECTION OF DEFECTIVE TAPE DRIVE BY AGGREGATING READ ERROR STATISTICS  
A plurality of tape drives writes a plurality of indicators corresponding to a plurality of data units on a tape, wherein an indicator indicates which tape drive of the plurality of tape drives has...
US20090086355 SPINDLE STAGE FOR TESTING MAGNETIC HEAD WITH VCM MECHANISM AND AUTOMATIC MAGNETIC HEAD MOUNTING/DEMOUNTING DEVICE  
To provide a spindle stage for testing a magnetic head in which high precision servo following can be performed by an inexpensive VCM mechanism without using a piezoelectric element, and to provide...
US20080198489 Cartridge drive diagnostic tools  
In one embodiment, a method of diagnosing an error in a cartridge drive, comprises detecting an occurrence of a defined event in a cartridge drive, in response to the defined event, initiating an...
US20100014179 Media library system and method for monitoring changes in inventory of media cartridges  
A method for monitoring changes in an inventory of media cartridges in a media library includes the steps of determining with a controller that the inventory of media cartridges in the media...
US20090262444 Transferring Disk Drives Within Disk Drive Testing Systems  
A method of transferring disk drives within a disk drive testing system includes actuating an automated transporter to retrieve multiple disk drives presented for testing, and actuating the...
US20090153994 Disk Drive Transport, Clamping and Testing  
A disk drive transporter, for transporting a disk drive and for mounting a disk drive within a test slot, includes a frame configured to receive and support a disk drive. The frame includes...
US20070115579 Method to test a tape drive  
Applicant's invention comprises a method to test a tape drive and its mid-tape recovery abilities. Applicant's method provides a tape drive, and disposes a magnetic tape in that tape drive, wherein...
US20090262445 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 transporter...
US20100067133 COMMAND SUSPENSION IN RESPONSE, AT LEAST IN PART, TO DETECTED ACCELERATION AND/OR ORIENTATION CHANGE  
In an embodiment, an apparatus is provided that may include circuitry to, in response at least in part to detected change in at least one of acceleration and orientation of storage, request...
US20110216431 PROCESSING DISKS ON A SPIN STAND  
A method of processing disks on spin stand is disclosed, the spin stand comprising a spindle motor having a rotor. A first disk is clamped to the rotor, wherein the first disk comprises a reference...
US20090207515 ERROR CORRECTION CAPABILITY FOR LONGITUDINAL POSITION DATA IN A TAPE STORAGE SYSTEM  
A longitudinal position (LPOS) word L(n) is encoded with error correction capability. The LPOS word includes a plurality of LPOS symbols L0(n) through Lk(n) calculated as...
US20060066971 System and method for ameliorating the effects of adjacent track erasure in magnetic data storage device  
To ameliorate the effects of ATE in a HDD, tracks that are potential victim tracks of an aggressor track by virtue of the victim tracks being exposed to a magnetic field associated with a write of...
US20070097534 Tape drive apparatus and method  
Disclosed is a method of storing data on a tape medium in at least one data recording session employing a tape drive apparatus operable to record the data in accordance with a format specifying an...
US20060109583 Method and apparatus for servo writing with servo pattern examination in a disk drive  
There is disclosed a servo information writing apparatus comprising a disk drive and an examination unit. The examination unit executes examination to select an adequate servo pattern as servo...
US20090323210 SHROUD FOR HEAD GIMBAL ASSEMBLY TESTING  
In one implementation, an assembly for testing a head gimbal assembly comprises a rotatable test disc, a mounting surface configured to mount the head gimbal assembly, and a shroud covering the...
US20100061003 ROTARY DISK ECCENTRICITY MEASUREMENT METHOD, ROTARY ENCODER, AND ROTARY MEMBER CONTROL DEVICE  
An eccentricity measurement method of measuring the eccentricity between a center of a connection portion of a rotary disk of a rotary encoder connected to a rotary shaft of a rotary member, and a...
US20090161243 Monitoring Disk Drives To Predict Failure  
Embodiments include methods, apparatus, and systems for monitoring disk drives to predict failure. One embodiment includes a disk drive having a plurality of different types of sensors that sense...
US20100302666 DETECTING A PERIODIC SEQUENCE OF SERVO SIGNALS  
A system and method are disclosed for detecting a periodic sequence. A value detector module detects a plurality of values of a periodic sequence. In one embodiment, a transformation module...
US20050195510 Feedback-controlled optical servo writer  
A system for calibrating servo marks formed in a tape medium includes an emitter for directing a beam of radiation toward the medium to form one or more servo marks. A detector detects the images...
US20130128371 DETERMINING TAPE HEAD CONDITION  
Techniques to use a model associating condition of a tape head with tape head usage are described. The tape head is for use in a magnetic tape drive. In examples, a condition of the tape head is...
US20110019298 TESTING MAGNETIC DISK PERFORMANCE WITH A SINGLE SLIDER SIMULATING SLIDERS OF VARIOUS DISK DRIVE SYSTEMS  
Magnetic disk drive systems and associated methods are described for testing magnetic disk performance for certification with a plurality of magnetic disk drive systems prior to installation. The...
US20100134912 LUBRICANT DISTRIBUTION IN HARD DISK DRIVES USED FOR DIGITAL VIDEO RECORDERS  
A method for utilizing idle times during read/write operations for a personal video recorder (PVR) is described. Idle times during read/write operations are predicted and then such idle times are...
US20060023336 Cleaning read/write heads of a magnetic tape recording system  
One embodiment of a method is provided of cleaning one or more read/write heads of a magnetic tape recording system using a magnetically recordable cleaning tape in the system. An initial target...
US20100328801 DISK DRIVE  
According to one embodiment, a disk drive includes a disk medium, a read controller configured to perform a read control for information in the disk medium, a determiner configured to determine...
US20120014010 DETERMINING A REFERENCE WAVEFORM USED BY A CORRELATOR IN A SERVO CHANNEL  
Provided are a method, servo channel, and tape drive for determining a reference waveform used by a correlator in a servo channel. Sequences of servo signal samples are provided from read servo...
US20100290144 INVARIANT MULTI-DIMENSIONAL VIBRATION-RESILIENCE-SIGNATURE GENERATION SYSTEM  
One embodiment of the present invention provides a system that generates vibration-resistance signatures for hard disk drives (HDDs). In this system, a set of HDDs is mechanically affixed to a disk...
US20090310240 CODING TECHNIQUE FOR CORRECTING MEDIA DEFECT-RELATED ERRORS AND RANDOM ERRORS  
A method of writing data on a storage medium that takes into account a condition of the storage medium. The method includes receiving data to be written on a portion of a storage medium and...
US20140029125 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...
US20120050903 Engaging Test Slots  
In general, a test slot is engaged with automated machinery to inhibit movement of the test slot, thereby inhibiting transmission of vibration from the test slot to its surroundings. While the...
US20120044593 TEMPERATURE INDUCED HEAD SKEW  
One way to minimize full DC head-skew re-calibrations rendered necessary by changes in storage media drive operating temperature is to compensate for temperature-induced DC head-skew using a known...
US20080266705 Servo error detection and compensation utilizing virtual data tracking servo methods  
A method for detecting errors in a servo system of a magnetic storage drive includes writing a plurality of data tracks at a pitch, detecting a position of an edge of at least two of the data...
US20100027149 OSCILLATION TEST FOR OFF TRACK WRITE  
An enhanced oscillation test for detecting off track writing associated with a read/write head writing, on a magnetic media, a measurement track. Once the measurement track is written, a series of...
Matches 1 - 50 out of 398 1 2 3 4 5 6 7 8 >