Inventor

CHU SANG-HOON

KR33 patents

⚠️ This page may combine multiple inventors who share the name “CHU SANG-HOON”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHU SANG-HOON

SAMSUNG ELECTRONICS CO LTD

Method for resonance identification in hard disk drives

Adaptive disturbance repressing method and apparatus, and disk drive apparatus using the same

Method and apparatus for single written-in Repeatable Run-Out correction function used in multi-stage actuation control of hard disk drive

Method of testing servo burst signals of hard disk drive and recording medium adapted therefor

Voltage-constrained sinusoidal seek servo in hard disk drives

Online identification of secondary actuator transfer function via system decoupling in multiple-stage actuator servo systems in disk drives

Method of determining size of error and write control method for hard disc drive, hard disc drive using the write control method, and media storing computer programs for executing the methods

Method, medium, and apparatus controlling track seek in a recording and/or reproducing apparatus

Servo controller method and apparatus for high tracks per inch hard disk drives using a delay accomodating state estimator

Method and apparatus for generating the optimum read timing for read and write offset of a magneto resistive head

Method and apparatus adjusting reference clock frequency and disk drive using same

Disturbance compensation determination apparatus, a related method, a computer-readable medium storing a computer program related to the method, and a disk drive comprising the apparatus

HDD data read control apparatus, medium, and method

Method, medium, and apparatus controlling current gain change of a spindle motor driver

Servo controller method and apparatus for high tracks per inch hard disk drives using a delay accomodating state estimator

Apparatus, medium, and method with seek servo control considering temperature change

Method, medium, and apparatus compensating for torque variations based on temperature

Write control method of hard disk drive, hard disk drive adapting the method and recording medium thereof

Seek servo control method for adapting to supply voltage variation and disk drive using the same

Apparatus and method for unlatching a head within a data storage device

Method and apparatus for compensating for torque change in seek servo

Method and apparatus for providing positional information on a disk

Method for estimating position error gain for hard disk drives

Multiple sinusoidal seek servo system for reducing seek acoustics and seek time in hard disk drives

Apparatus and method compensating recurring false speed errors in DC motor and disk drive adopting same

Method and apparatus for estimating touchdown of a slider in a hard disk drive

Method for measuring track width of hard disk drive

Method and apparatus for providing positional information on a disk

Method and apparatus providing spiral servo control for skewless read/writes in a hard disk drive

SAMSUNG ELECTRONICS CO INC

Seek trajectory adaptation in sinusoidal seek servo hard disk drives

Method and apparatus to detect and manage servo sectors with defect on servo pattern area in hard disk drives

SAMSUNG ELECTRONICS LTD CO

Servo defect management scheme in hard disk drives

SONG KUM-JUNG

Data storage disk having variable location signal and disk drive using the data storage disk