Inventor

YANG WON CHOUL

HK20 patents

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

YANG WON CHOUL

SEAGATE TECHNOLOGY LLC

Characterizing laser output in a HAMR device

Controlling laser output in a HAMR device

Health monitoring for head of a heat-magnetic recording device using a writer-reader offset

Health monitoring for head of a heat-assisted magnetic recording device using a writer-reader offset

Head-medium contact detection using a thermal sensor and surface charge control of a slider

Head-medium contact detection using high frequency heater oscillation

Apparatus and method for measuring surface charge of a slider

Adaptive laser output control in a HAMR device

Adaptive write pole tip protrusion compensation

Storage device head instability recovery by heating from head heater

Addressing variations in bit error rates amongst data storage segments

SAMSUNG ELECTRONICS CO LTD

Method and apparatus for optimizing hard disc drive and/or recording medium for the same

Method and apparatus for determining disk drive parameter in accordance with ambient temperature

Device and method for adjusting distance between magnetic head and data storage medium

Method and apparatus to control head instability in a data storage system

Method to control flying height between a head and a disk and apparatus thereof

Apparatus, medium, and method controlling flying height of a magnetic head of a disk drive

Method for recording bursts on a disk and related apparatus

Dummy write method for improving performance of data storage system and apparatus therefor

YANG WON-CHOUL

Method and apparatus for detecting touch-down and contact between a head and a storage medium using a sensor, and a disk drive and storage medium using the method