Inventor
YU MANTLE MAN-HON
US34 patents
⚠️ This page may combine multiple inventors who share the name “YU MANTLE MAN-HON”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
29 patentsUS6034831AMar 7, 2000
Dynamic reverse reassign apparatus and method for a data recording disk drive
IBM151 citations98
US5761007AJun 2, 1998
Disk drive with multiple actuators on a single axis having different inertia characteristics
IBM70 citations96
US6226140B1May 1, 2001
Shock detector in a disk drive servo control system
IBM39 citations93
US6215608B1Apr 10, 2001
Hardware inhibit for a disk drive digital servo control system
IBM29 citations93
US6078445AJun 20, 2000
Gain control for a dual burst, dual frequency PES servo pattern
IBM36 citations93
US6049438AApr 11, 2000
Method and apparatus for encoding digital servo information in a servo burst
IBM36 citations93
US6594106B1Jul 15, 2003
Adaptive servo estimator and compensator for coil and carriage deformation in voice coil motor driven hard disk drive
IBM26 citations92
US6563657B1May 13, 2003
Multiple and reconfigurable data access and storage device using multiple actuators
IBM26 citations92
US6519109B1Feb 11, 2003
Method and apparatus for providing feedforward control of two interacting actuators
IBM43 citations92
US6362766B1Mar 26, 2002
Variable pulse PWM DAC method and apparatus
IBM22 citations92
US6226138B1May 1, 2001
Encoded TID with error detection and correction ability
IBM24 citations92
US6067202AMay 23, 2000
Method and apparatus for controlling spindle motor commutation switching times in a disk drive
IBM23 citations92
US6005743ADec 21, 1999
Disk drive with multiple actuators on a single axis and disk surfaces of differing track pitch
IBM40 citations92
US5886489AMar 23, 1999
Apparatus and method for reducing spindle power and acoustic noise in a disk drive
IBM38 citations92
US6421198B1Jul 16, 2002
Linearity compensation for a position error signal based on repeatable and non-repeatable run out in a disk drive
IBM41 citations91
US5966263AOct 12, 1999
Method and apparatus to increase head/AE select robustness for a system using multiple head servo write
IBM20 citations91
US6577463B1Jun 10, 2003
Tangential misalignment precompensation in a direct access storage device
IBM13 citations84
US6469855B1Oct 22, 2002
Method and system for adaptive settle and write inhibit constraints based on head geometry and servo/mechanical system
IBM15 citations84
US6462898B2Oct 8, 2002
Disk drive with information encoded in the position error signal fields
IBM18 citations84
US5912782AJun 15, 1999
System and method for adjusting actuator control current for directional torque variance in a disk drive
IBM19 citations81
US6522495B1Feb 18, 2003
System, method and program for determining the magnetic center shift within a disk drive system
IBM11 citations74
US6426843B1Jul 30, 2002
Settle time estimator feedback for rotational position reordering in data storage devices
IBM10 citations74
US6141176AOct 31, 2000
Data storage disk with information encoded in the position error signal fields
IBM14 citations74
US6088188AJul 11, 2000
System and method for determining when hard disk drive power amplifier is saturated
IBM8 citations74
US6388832B1May 14, 2002
Method and system for providing spindle motor control for head loading in a disk drive
IBM11 citations73
US6384998B1May 7, 2002
Multiplexing servo tracking signals in a disk drive
IBM13 citations73
US5617536AApr 1, 1997
Method and apparatus for servo control with error detection of gray (pennington) code used for servo track ID
IBM7 citations73
US6456450B1Sep 24, 2002
Method and apparatus for reducing track misregistration due to digital-to-analog converter quantization noise
IBM7 citations68
US6412058B1Jun 25, 2002
Adaptive head address re-map for data storage devices
IBM1 citations49
HITACHI GLOBAL STORAGE TECH
4 patentsUS6975478B2Dec 13, 2005
Method for calibrating disk drive servo control system gain values during manufacturing
HITACHI GLOBAL STORAGE TECH13 citations82
US6865042B2Mar 8, 2005
Embedded servo patterning methods and apparatus
HITACHI GLOBAL STORAGE TECH7 citations72
US6873489B2Mar 29, 2005
Method, system, and program for estimating coil resistance of a voice coil motor in a disk drive system
HITACHI GLOBAL STORAGE TECH6 citations71
US6909576B2Jun 21, 2005
Method, system, and program for generating control signals to perform a seek operation
HITACHI GLOBAL STORAGE TECH0 citations52