197886 ⎘
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor; Disposition or mounting of heads relative to record carriers with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks; Servo formatting Spiral servo format
METHOD OF MANUFACTURING DISK DEVICE, AND DISK DEVICE
#2MAGNETIC RECORDING DEVICE AND A METHOD FOR MANUFACTURING THE SAME
#3Magnetic disk device and servo pattern write method
#4Manufacturing method of magnetic disk device and magnetic disk device
#5Magnetic disk device and servo write method
#6Zone self servo writing with synchronized parallel clocks
#7Servo zone transition optimization for disk drives
#8Servo zone transition optimization for magnetic disk recording devices
#9Techniques for clearly distinguishing between neighboring spirals in an SSW scheme
#10Spiral-based self-servo-write on single disk surface
#11Accurate repeatable runout compensation in disk drives during seeks
#12Virtual window mode for guide spiral servo demodulation
#13MAGNETIC DISK DEVICE, CONTROL METHOD, AND MANUFACTURING METHOD OF MAGNETIC DISK DEVICE
#14Spiral write launch while servoing on reference guide spirals
#15Writing spirals with accurate slope on a disk drive media
#16Locking a disk-locked clock using timestamps of successive servo address marks in a spiral servo track
#17Clock accuracy determining method and clock accuracy determining device
#18Servo pattern by microwave assisted magnetic recording, perpendicular magnetic recording medium, magnetic storage device and method for manufacturing the same
#19Multi-layer recording lamination for solid immersion mirror servo track writing
#20DISK STORAGE APPARATUS AND METHOD OF WRITING SERVO PATTERNS
#21Disk drive writing spiral tracks on a slave surface using repeatable runout compensation for a master surface
#22Track pitch variation measurement method using spiral DC pattern writing
#23SELF-SERVO WRITER WITH ITERATIVE LEARNING CONTROL MECHANISM AND METHOD OF OPERATION THEREOF
#24Storage device and information correction method
#25Systems and methods for spiral waveform detection
#26MAGNETIC RECORDING MEDIUM AND DISK DEVICE
#27METHOD OF SERVO SPIRAL SWITCHING DURING SELF SERVO-WRITE FOR A DISK DRIVE
#28Master disk for magnetic transfer, a method of drawing a magnetic transfer pattern, and a magnetic recording medium having a transferred magnetic transfer pattern
#29Servo pattern writing method, control circuit, and magnetic disk apparatus
#30SERVO PATTERN WRITING METHOD OF HARD DISK DRIVE
#31Methods and systems for estimating time corresponding to peak signal amplitude
#32Information storage apparatus, servo pattern formation control apparatus, and recording medium
#33METHOD OF POSITIONING ELECTROMAGNETIC CONVERSION ELEMENT
#34Self servo writing disk controller and methods for use therewith
#35Disk drive servoing off of first head while determining fly height for second head
#36Reducing written-in errors in servo patterns
#37Disk drive device and servo write method
#38Method for improved insitu spiral writing
#39Method and apparatus for writing servo data, using spiral servo patterns in a disk drive
#40Method and apparatus for head positioning using spiral servo patterns in a disk drive
#41Apparatus and method to minimize amplitude variations associated with media/head response characteristics in servo writing of perpendicular magnetic recording
#42Utilization of the acceleration zone in ammonite servo writing
#43Method and apparatus for positioning head using spiral servo pattern in a disk drive
#44Method and apparatus for writing servo pattern using spiral pattern in disk drive
#45Method and apparatus for writing spiral servo pattern in a disk drive
#46Method and apparatus for writing servo data in a disk drive using spiral servo patterns
#47Servo writing with offset compensation for prewritten reference
#48Servo writing using radially overlapped servo segments
#49Method and apparatus for writing a spiral servo pattern on a disk in a disk drive
#50Self servo writing disk controller and methods for use therewith
#51Position determination using circular shift codes
#52Systems and methods for estimating time corresponding to peak signal amplitude
#53Method and apparatus for correcting errors while writing spiral servo information in a disk drive
#54Method for measuring actuator velocity during self-servo-write
#55Method for improved insitu spiral writing
#56Preconditioning an elastomeric stop member for use as a reference position
#57Method and apparatus for servo control using spiral servo information in a disk drive
#58Method of writing a reference servo signal of hard disk drive and apparatus suitable therefor
#59Servowriter contact torque control
#60Data pattern detection using adaptive search windows
#61Read write (RW) head position control for self servo writing process
#62Propagation self servowrite using self-written spiral signals for in-process calibration
#63Window timing adjustment for spiral bursts
#64Method to control spiral start point during ammonite servo track writer process using reference servo track band
#65Method for writing spiral reference servo signal in hard disk drive and method for compensating for temperature
#66Coherent repeatable runout correction for reduced rpm self-servo write
#67Parallel self-servo write in a data storage device
#68Parallel self-servo write circuitry in a data storage device
#69Energy-assisted magnetic recording data storage device with assistive energy pre-heating for writing servo patterns
#70Determining absolute position on HDD spiral patterns using dual TDMR readers
#71Gain scheduled controller to handle unpredictable disturbances during spiral write
#72Data storage device self-servo writing by compensating for corrupted spiral track crossing signal
#73Data storage device employing upsampling to compensate for high frequency repeatable runout
#74Self-servo-write systems for detecting interference caused by pre-written seed wedges
#75Calibration spiral to improve guide spiral placement
#76Single surface in-drive erase
#77Data storage device measuring reader/writer offset by reading spiral track and concentric servo sectors
#78Ammonite servo reference pattern writing for heat-assisted magnetic recording
#79Data storage device attenuating interference from first spiral track when reading second spiral track
#80Apparatus enabling writing servo data when disk reaches target rotation speed
#81Spiral band end detection
#82Disk drive opening spiral crossing window based on DC and AC spiral track error
#83Writable servo overlap zones
#84Disk drive writing radial offset spiral servo tracks by reading spiral seed tracks