197668 ⎘
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor; Special dispositions or recording techniques; Arrangements, methods or circuits; Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
Sub-classes:Magnetic recording system including differentiated write current emphasis signal generator circuit
#2Magnetic recording system using pattern dependent writer having register pages for storing write currents
#3Magnetic recording system with ternary pattern dependent write signaling
#4Protection of device from electrostatic discharge (ESD) damage
#5Current shunt
#6Implementing spin-torque oscillator sensing with enhanced delay control feedback circuit for hard disk drives
#7Implementing spin-torque oscillator sensing with enhanced demodulator for hard disk drives
#8CPP-TMR sensor with non-orthogonal free and reference layer magnetization orientation
#9Apparatus, signal-processing circuit and device for magnetic recording system
#10Spin torque oscillator sensor
#11Elimination of errors due to aging in magneto-resistive devices
#12High SNR CPP reader using high frequency standing wave interference detection
#13Method of repairing the deterioration of magneto-resistive effect device
#14METHODS FOR SUBSTRATE BIASING FOR MR DEVICES
#15Combined DC restoration double detection and loops
#16Apparatus, signal-processing circuit and device for magnetic recording system
#17CPP-TMR sensor with non-orthogonal free and reference layer magnetization orientation
#18Thermal asperity detector and methods for use therewith
#19SUBSTRATE BIASING FOR MR DEVICES
#20SHIELD BIASING FOR MR DEVICES
#21Magnetic sensor and magnetic recording/reproducing apparatus
#22Method for manufacturing a magnetoresistive sensor having a novel junction structure for improved track width definition and pinned layer stability
#23Method and apparatus for measuring resistance of a resistive sensor
#24Heat-assisted magnetic recording method using eddy current and head for heat-assisted magnetic recording
#25Elimination of electric-pop noise in MR/GMR device
#26Method and apparatus for slew rate control in the write current shape of a hard disk drive
#27Method and system for removing signal defects in MR head signals
#28Disk drive
#29EMR structure with bias control and enhanced linearity of signal
#30Reproducing circuit and a magnetic disk apparatus using same
#31Method and apparatus for balanced shield shunts, leads and pads for electrical noise reduction in read heads
#32Magnetic data system having a shield biasing circuit with resistor coupled between the shield and substrate
#33Magnetic data system having bias circuit with bias resistor
#34Method for recording bursts on a disk and related apparatus
#35Magnetic disk unit
#36Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect
#37CPP-GMR sensor with non-orthogonal free and reference layer magnetization orientation
#38Magnetic head slider testing apparatus and magnetic head slider testing method
#39Method, medium, and apparatus controlling domain characteristics of a magneto-resistive sensor
#40Resistance mode comparator for determining head resistance
#41Magnetic sensor using a magnetic oscillation element
#42Magnetic disk apparatus
#43Low flying head detection using readback signal amplitude modulation
#44Method of fabricating magnetic sensors with pinned layers with zero net magnetic moment
#45Magnetoresistive sensor having a novel junction structure for improved track width definition and pinned layer stability
#46Magnetic head with a narrow spacing between magnetic shields at air bearing surface
#47Magnetic sensor having a Ru/Si based seedlayer providing improved free layer biasing
#48Method for manufacturing magnetic head device
#49Magnetic read/write device preventing malfunction due to reversal in polarity
#50System and method for detecting head instability
#51Individual slider testing
#52Full track profile derivative method for read and write width measurements of magnetic recording head
#53Reverse magnetic reset to screen for weakly pinned heads
#54Stray field detector, magnetic disk drive, and method of head escaping
#55Extraordinary magnetoresistance sensor with perpendicular magnetic biasing by a ferromagnetic multilayer
#56Disk drive write driver with boosting circuit to improve output voltage swing
#57Magnetic recording and reproducing apparatus having element for correcting misaligned magnetization direction
#58CPP GMR with hard magnet in stack bias layer
#59Thin film magnetic head, head gimbal assembly, and hard disk drive
#60Device and signal processing circuit for magnetic recording, magnetic recording apparatus
#61Magnetic hard disk drive with countermeasure against spike noise
#62Read head preamplifier with thermal asperity transient control
#63Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head
#64Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head
#65Method and apparatus for write head demagnetization
#66Method for intersymbol interference removal in data recovery
#67Preamplifier circuit with signal interference cancellation suitable for use in magnetic storage devices
#68Integrated bias and offset recovery amplifier
#69Method for controlling starting operation of unit and executing self-checking test
#70Write driver with continuous impedance match and improved common mode symmetry
#71Magneto-optical recording medium, information recording/reproducing method, and magnetic recording apparatus
#72System and method for disk formatting
#73Composite magnetic head arranged so the reproducing elements do not overlap a pole of a recording element
#74Impedance-controlled write driver for low power preamp
#75Perpendicular recording magnetic disk apparatus
#76Magnetic recording medium
#77Magnetic recording channel utilizing control fields for timing recovery, equalization, amplitude and amplitude asymmetry
#78Magnetic disk, magnetic disk manufacturing method and magnetic disk apparatus
#79Apparatus and method for use in transferring information relative to a storage medium
#80Magnetic disk, magnetic disk manufacturing method and magnetic disk apparatus
#81Method and apparatus for decoding sync marks in a disk
#82Method of detecting polarity reversal in a magnetoresistive sensor
#83Magnetic recording and reproduction method
#84Magnetic recording disk drive with laminated media and improved media signal-to-noise ratio
#85Method for resetting pinned layer magnetization in a magnetoresistive sensor
#86Preamp mode status diagnostic
#87Write pole coating layer
#88Magnetic disk device using head amplifier circuit for pattern dependent write
#89Head-disk contact detection using a thermal sensor for modulation air bearings
#90Sorting of HAMR read/write heads based on reader and writer widths
#91Disk drive with preamplifier with isolation for multiple readers in a slider with a common return signal