ClassID:

199042

G11B21/106 - CPC Classification

Classification description:

Head arrangements not specific to the method of recording or reproducing; Driving or moving of heads; Track finding or aligning by moving the head Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks

Recent Application in this class:
#1
20250279116
2025-09-04

Method of Manufacturing Piezoelectric Microactuators Having Wrap-Around Electrodes

#2
20250095680
2025-03-20

Magnetic disk apparatus and method

#3
20230306987
2023-09-28

Magnetic disk device and method

#4
20230282237
2023-09-07

Data storage device integrating wedge repeatable runout (WRRO) learning into data recovery procedure (DRP)

#5
20230282228
2023-09-07

Magnetic disk device

#6
20230245683
2023-08-03

Magnetic disk device

#7
20230186947
2023-06-15

Data storage device with soft on-disk activation of fine actuators

#8
20230067909
2023-03-02

Estimating read offset in a drive using machine learning

#9
20230063493
2023-03-02

Magnetic disk device

#10
20230046510
2023-02-16

MAGNETIC DISK DEVICE AND REFRESH PROCESSING METHOD

#11
20220301584
2022-09-22

Magnetic disk device and method of write processing of postcode

#12
20220262402
2022-08-18

Data storage device independently driving outer and inner fine actuators

#13
20220215858
2022-07-07

Magnetic disk device and head change processing method

#14
20220068307
2022-03-03

Magnetic disk device and sector processing method

#15
20210098019
2021-04-01

Disk drive with efficient handling of off-track events during sequential write

#16
20200395044
2020-12-17

Magnetic disk device and control method of servo write

#17
20190362746
2019-11-28

Assembly of DSA suspensions using microactuators with partially cured adhesives

#18
20190284445
2019-09-19

Pressure-sensitive adhesive sheet and magnetic disc device

#19
20180198057
2018-07-12

Method of manufacturing piezoelectric microactuators having wrap-around electrodes

#20
20180137883
2018-05-17

Thin-film piezoelectric material element having a solder regulating part formed on a pad surface being a surface of an electrode pad

#21
20170084305
2017-03-23

Magnetic recording medium and magnetic recording and reproducing apparatus

#22
20170025134
2017-01-26

Portable turntable device, system, and method

#23
20160293208
2016-10-06

Adaptive disturbance rejection using dead zone filter

#24
20160099631
2016-04-07

SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME

#25
20140029133
2014-01-30

Read/write apparatus and read/write method

#26
20130314816
2013-11-28

Transducer head with multiple read sensors

#27
20130285579
2013-10-31

Actuator driver

#28
20130176840
2013-07-11

Optical Pickup

#29
20130135769
2013-05-30

MAGNETIC HEAD INSPECTION APPARATUS AND MAGNETIC HEAD INSPECTION METHOD

#30
20130100787
2013-04-25

OPTICAL INFORMATION APPARATUS AND INFORMATION RECORDING OR REPRODUCING METHOD

#31
20120206830
2012-08-16

Transducer head with multiple read sensors

#32
20120076343
2012-03-29

Motor drive circuit

#33
20110182159
2011-07-28

Optical pickup

#34
20090003160
2009-01-01

Information Recording Apparatus and Information Recording Method

#35
20080259489
2008-10-23

Apparatus and method for generating a servo pattern

#36
20080024906
2008-01-31

Head position control method, head position control device and disk device

#37
20080002277
2008-01-03

Bi-directional servo track writing to minimize sidewall writing at high skew angles

#38
20070253094
2007-11-01

Head position control method, head position control device and disk device

#39
20070070837
2007-03-29

Disc drive apparatus

#40
20070058277
2007-03-15

Storage media having areas for storing data for correcting servo information errors

#41
20060291355
2006-12-28

Disc drive apparatus

#42
20060285238
2006-12-21

Disk device and method of generating signal representing head

#43
20060268281
2006-11-30

Rotation and translation measurement

#44
20060238924
2006-10-26

Read-write head with integrated microactuator

#45
20060039264
2006-02-23

Rotating recorder with dual encoder arrangement having eccentricity compensation

#46
20050243667
2005-11-03

Position control apparatus and method for an optical disk recording/reproducing apparatus with interlinked on/off of a phase compensator and on/off of a servo loop

#47
20050237658
2005-10-27

Methods for selective multi-pass servowriting and self-servowriting

#48
20050237657
2005-10-27

Systems for selective multi-pass servowriting and self-servowriting

#49
20050237654
2005-10-27

Methods for variable multi-pass servowriting and self-servowriting

#50
20050232096
2005-10-20

Detecting anomalies in a scanning signal

#51
20050218855
2005-10-06

Methods and devices for processing servo control signals

#52
20050201003
2005-09-15

Magnetic disk drive

#53
20050105200
2005-05-19

Method and apparatus for correcting for systematic errors in timing pattern generation

#54
20050099735
2005-05-12

Precise positioning actuator for head element and head device with the actuator

#55
17885310
2023-07-04

Magnetic disk device that corrects position of head by demodulation

#56
17878838
2024-01-02

Split-actuator drive that coordinates fractional-wedge timing of aggressor and victim for effective victim feedforward

#57
17742202
2023-09-12

System and method for disk drive fly height measurement

#58
17680043
2023-06-27

Angled free layer for multi-level read signals

#59
17679565
2023-05-23

Data access and logical mapping for magnetic disks

#60
17651100
2023-07-04

Data timestamp and read counter for magnetic recording devices

#61
17580350
2022-11-29

Magnetic disk device and method of reducing microactuator voltage

#62
17575976
2023-05-09

Polydyne acceleration trajectory control

#63
17466327
2023-01-31

Read offset calibration for error recovery

#64
17358810
2022-04-05

Data storage device calibrating fine actuator by ramping disturbance to attenuate servo transient

#65
16589113
2020-09-08

Disk drive with efficient handling of off-track events during sequential write

#66
16589103
2020-09-08

Disk drive with efficient handling of off-track events during sequential write

#67
16369380
2020-07-07

Scheduling low-priority disk seeks for multi-actuator data storage device

#68
16359747
2019-12-10

Data storage device transmitting delta servo control value over serial interface

#69
16284238
2020-01-21

Magnetic disk device and write processing method

#70
16271840
2020-05-26

Data storage device converting disk surface to read-only

#71
16247938
2019-12-03

Magnetic disk device and method for suppressing disturbance component having harmonic

#72
16182160
2020-01-07

Two dimensional magnetic recording (TDMR) off-track performance improvement

#73
16165244
2019-11-12

Method and apparatus for calibrating read-head off-track detector

#74
15933276
2018-10-23

Data storage device using programmable deglitch window to detect saturation of VCM current control

#75
15912480
2019-04-09

MISO equalization with ADC averaging

#76
15784509
2019-02-12

Heat-assisted magnetic recording device capable of preventing contaminant on the head

#77
15586217
2018-03-27

MISO equalization with ADC averaging

#78
14041048
2014-10-07

Method and system for specifying self-servo-write patterns

#79
13923024
2015-09-29

Disk drive compensating for microactuator gain variations

#80
13911365
2015-05-05

Disk drive applying feed-forward compensation when writing consecutive data tracks

#81
13862320
2015-04-07

Disk drive adjusting phase of adaptive feed-forward controller when reconfiguring servo loop

#82
13678495
2014-11-18

Disk drive calibrating parameter by injecting noise signal and measuring off-track read capability