Inventor
LEONG FOO LENG
SG47 patents
⚠️ This page may combine multiple inventors who share the name “LEONG FOO LENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MARVELL INT LTD
23 patentsUS7863842B1Jan 4, 2011
Motor spindle control system and method
MARVELL INT LTD8 citations84
US7504789B1Mar 17, 2009
Motor spindle control system and method
MARVELL INT LTD8 citations84
US7531975B1May 12, 2009
Adjustable frequency PWM driver
MARVELL INT LTD8 citations82
US7468590B1Dec 23, 2008
Method and apparatus for initializing operation of a disk drive
MARVELL INT LTD5 citations74
US7196484B1Mar 27, 2007
Motor spindle control system and method
MARVELL INT LTD8 citations74
US9912267B1Mar 6, 2018
Rotor lock detection
MARVELL INT LTD3 citations73
US7986483B1Jul 26, 2011
Speed control systems and methods for decreasing power consumption in rotating storage devices
MARVELL INT LTD6 citations73
US7385364B1Jun 10, 2008
System and method for detecting back electromotive force with automatic pole calibration
MARVELL INT LTD8 citations73
US7227321B1Jun 5, 2007
System and method for detecting back electromotive force with automatic pole calibration
MARVELL INT LTD6 citations73
US7098621B1Aug 29, 2006
Motor spindle control system and method
MARVELL INT LTD10 citations73
US10193476B1Jan 29, 2019
Systems and methods for operating a brushless DC motor
MARVELL INT LTD6 citations72
US8766583B1Jul 1, 2014
Voltage mode using pseudo current limit
MARVELL INT LTD2 citations63
US8044616B1Oct 25, 2011
Method and apparatus for initializing operation of a disk drive
MARVELL INT LTD1 citations63
US7362063B1Apr 22, 2008
Motor spindle control system and method
MARVELL INT LTD1 citations63
US7332883B1Feb 19, 2008
Method and apparatus for initializing operation of a disk drive
MARVELL INT LTD2 citations63
US7274162B1Sep 25, 2007
Motor spindle control system and method
MARVELL INT LTD5 citations63
US9543863B1Jan 10, 2017
Method to eliminate current surge during spindle spin up
MARVELL INT LTD1 citations52
US8497647B1Jul 30, 2013
Motor spindle control system and method
MARVELL INT LTD0 citations52
US7808193B1Oct 5, 2010
Motor spindle control system and method
MARVELL INT LTD1 citations52
US7205744B1Apr 17, 2007
Motor spindle control system and method
MARVELL INT LTD0 citations52
US7839103B1Nov 23, 2010
Adjustable frequency PWM driver
MARVELL INT LTD0 citations50
US7453221B1Nov 18, 2008
System for controlling rotation of a disk drive
MARVELL INT LTD0 citations47
US7365510B1Apr 29, 2008
Motor spindle control system and method
MARVELL INT LTD0 citations45
KRISHNAMOORTHY RAVISHANKER
10 patentsUS8405332B1Mar 26, 2013
Method to eliminate current surge during spindle spin up
KRISHNAMOORTHY RAVISHANKER18 citations92
US8472233B1Jun 25, 2013
Circuits and methods for multiple programmable memory using one-time programmable memory
KRISHNAMOORTHY RAVISHANKER6 citations84
US8390226B1Mar 5, 2013
Voltage mode using pseudo current limit
KRISHNAMOORTHY RAVISHANKER8 citations84
US8330586B2Dec 11, 2012
Systems and methods for programming of a cooling fan via a serial port communication mode
KRISHNAMOORTHY RAVISHANKER7 citations84
US8174863B1May 8, 2012
Circuits and methods for multiple programmable memory using one-time programmable memory
KRISHNAMOORTHY RAVISHANKER8 citations84
US8807956B2Aug 19, 2014
Apparatus and method for controlling speed of a fan via a first control module connected by a cable and/or conductors between a motor and a second control module
KRISHNAMOORTHY RAVISHANKER9 citations83
US8314581B1Nov 20, 2012
Motor spindle control system and method
KRISHNAMOORTHY RAVISHANKER2 citations63
US8791664B2Jul 29, 2014
Systems and methods for adaptive torque adjustment and motor control
KRISHNAMOORTHY RAVISHANKER3 citations62
US8853985B2Oct 7, 2014
Back-EMF detection for motor control
KRISHNAMOORTHY RAVISHANKER0 citations52
US8277198B2Oct 2, 2012
Fan motor control systems
KRISHNAMOORTHY RAVISHANKER1 citations51
MARVELL WORLD TRADE LTD
5 patentsUS9863852B2Jan 9, 2018
Failure prediction in a rotating device
MARVELL WORLD TRADE LTD4 citations73
US9425721B2Aug 23, 2016
Systems and methods for adaptive motor speed control
MARVELL WORLD TRADE LTD0 citations52
US9334870B2May 10, 2016
Systems and methods for programming of a cooling fan arrangement
MARVELL WORLD TRADE LTD0 citations52
US9829348B2Nov 28, 2017
Identifying a position of a brushless DC motor
MARVELL WORLD TRADE LTD0 citations51
US9695832B2Jul 4, 2017
Apparatuses for controlling operation of a motor of a fan assembly based on an induced voltage or a back electromotive force
MARVELL WORLD TRADE LTD0 citations51
LEONG FOO LENG
5 patentsUS8405330B2Mar 26, 2013
Determining stuck conditions for electric motors using inductive sensing
LEONG FOO LENG3 citations61
US8278861B2Oct 2, 2012
External disturbance detection system and method for two-phase motor control systems
LEONG FOO LENG0 citations51
US8269440B2Sep 18, 2012
Motor speed control system and method without pulse-width modulation
LEONG FOO LENG1 citations51
US8164285B2Apr 24, 2012
External disturbance detection system and method for two-phase motor control systems
LEONG FOO LENG1 citations51
US8143825B2Mar 27, 2012
Determining stuck conditions for electric motors using inductive sensing
LEONG FOO LENG1 citations51