Inventor · disambiguated record
Ravishanker Krishnamoorthy
Also filed as: KRISHNAMOORTHY RAVISHANKER
57 granted patents·3 pending applications·489 citations·filing 1998–2016
98Inventor score
Files withMARVELL WORLD TRADE LTD19MARVELL INT LTD15KRISHNAMOORTHY RAVISHANKER14SUTARDJA SEHAT4LEONG FOO LENG3
Top patents by PatentIndex Score
60 records- 0198US8947013B2LED-based lamp with user-selectable color temperatureMARVELL WORLD TRADE LTD·Filed 2014·Granted Feb 3, 2015·51 cites·38 claims
- 0298US8310389B1Hysteretic inductive switching regulator with power supply compensationCHUI SIEW YONG·Filed 2012·Granted Nov 13, 2012·88 cites·12 claims
- 0397US8405332B1Method to eliminate current surge during spindle spin upKRISHNAMOORTHY RAVISHANKER·Filed 2010·Granted Mar 26, 2013·18 cites·20 claims
- 0495US8520415B1Multi-function feedback using an optocouplerKRISHNAMOORTHY RAVISHANKER·Filed 2009·Granted Aug 27, 2013·51 cites·16 claims
- 0594US9554441B2Current balancing for light-emitting-diode-based illumination systemsMARVELL WORLD TRADE LTD·Filed 2015·Granted Jan 24, 2017·15 cites·18 claims
- 0694US8970101B2Phosphor and LED placement for white LED-based lampsMARVELL WORLD TRADE LTD·Filed 2014·Granted Mar 3, 2015·16 cites·36 claims
- 0793US9055647B2Current balancing circuits for light-emitting-diode-based illumination systemsMARVELL WORLD TRADE LTD·Filed 2014·Granted Jun 9, 2015·16 cites·16 claims
- 0893US7443627B1Lowest power mode for a mobile driveMARVELL INT LTD·Filed 2007·Granted Oct 28, 2008·46 cites·40 claims
- 0991US8853964B2Current balancing circuits for light-emitting-diode-based illumination systemsMARVELL WORLD TRADE LTD·Filed 2012·Granted Oct 7, 2014·9 cites·47 claims
- 1090US8807956B2Apparatus 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 moduleKRISHNAMOORTHY RAVISHANKER·Filed 2011·Granted Aug 19, 2014·9 cites·20 claims
- 1188US9748878B1Adaptive brake timing for a brushless motorMARVELL INT LTD·Filed 2016·Granted Aug 29, 2017·4 cites·20 claims
- 1287US8330586B2Systems and methods for programming of a cooling fan via a serial port communication modeKRISHNAMOORTHY RAVISHANKER·Filed 2010·Granted Dec 11, 2012·7 cites·17 claims
- 1387US7468590B1Method and apparatus for initializing operation of a disk driveMARVELL INT LTD·Filed 2008·Granted Dec 23, 2008·5 cites·22 claims
- 1485US8129969B1Hysteretic inductive switching regulator with power supply compensationCHUI SIEW YONG·Filed 2006·Granted Mar 6, 2012·20 cites·41 claims
- 1584US8174863B1Circuits and methods for multiple programmable memory using one-time programmable memoryKRISHNAMOORTHY RAVISHANKER·Filed 2010·Granted May 8, 2012·8 cites·20 claims
- 1681US8472233B1Circuits and methods for multiple programmable memory using one-time programmable memoryKRISHNAMOORTHY RAVISHANKER·Filed 2012·Granted Jun 25, 2013·6 cites·20 claims
- 1780US9863852B2Failure prediction in a rotating deviceMARVELL WORLD TRADE LTD·Filed 2013·Granted Jan 9, 2018·4 cites·13 claims
- 1878US8374004B2Isolated AC-DC converter with master controller on secondary side and slave controller on primary sideMARVELL WORLD TRADE LTD·Filed 2010·Granted Feb 12, 2013·5 cites·18 claims
- 1978US7863842B1Motor spindle control system and methodMARVELL INT LTD·Filed 2007·Granted Jan 4, 2011·8 cites·8 claims
- 2077US7332883B1Method and apparatus for initializing operation of a disk driveMARVELL INT LTD·Filed 2006·Granted Feb 19, 2008·2 cites·35 claims
- 2176US8390226B1Voltage mode using pseudo current limitKRISHNAMOORTHY RAVISHANKER·Filed 2008·Granted Mar 5, 2013·8 cites·15 claims
- 2275US8791664B2Systems and methods for adaptive torque adjustment and motor controlKRISHNAMOORTHY RAVISHANKER·Filed 2011·Granted Jul 29, 2014·3 cites·20 claims
- 2374US8711584B2Reducing voltage stress in a flyback converter designZHANG HONG LIANG·Filed 2011·Granted Apr 29, 2014·5 cites·14 claims
- 2474US8314581B1Motor spindle control system and methodKRISHNAMOORTHY RAVISHANKER·Filed 2010·Granted Nov 20, 2012·2 cites·7 claims
- 2574US7859244B1Self configuring voltage regulatorsMARVELL INT LTD·Filed 2008·Granted Dec 28, 2010·6 cites·28 claims
- 2672US9241385B2Current balancing circuits for light-emitting-diode-based illumination systemsMARVELL WORLD TRADE LTD·Filed 2014·Granted Jan 19, 2016·1 cites·20 claims
- 2772US8766583B1Voltage mode using pseudo current limitMARVELL INT LTD·Filed 2013·Granted Jul 1, 2014·2 cites·14 claims
- 2871US9408274B2Light emitting diodes generating white lightMARVELL WORLD TRADE LTD·Filed 2014·Granted Aug 2, 2016·1 cites·31 claims
- 2971US8044616B1Method and apparatus for initializing operation of a disk driveMARVELL INT LTD·Filed 2008·Granted Oct 25, 2011·1 cites·25 claims
- 3070US7161757B1Method and apparatus for controlling a disk drive under a power loss conditionST MICROELECTRONICS ASIA·Filed 1999·Granted Jan 9, 2007·22 cites·17 claims
- 3170US6700344B1Method of controlling the speed of an arm of a disk driveST MICROELECTRONICS ASIA·Filed 1998·Granted Mar 2, 2004·30 cites·37 claims
- 3269US7755432B1Short circuit protection circuits and methodsMARVELL INT LTD·Filed 2008·Granted Jul 13, 2010·6 cites·22 claims
- 3364US9329660B2Lowest power mode for a mobile driveMARVELL WORLD TRADE LTD·Filed 2013·Granted May 3, 2016·1 cites·20 claims
- 3464US7274162B1Motor spindle control system and methodMARVELL INT LTD·Filed 2006·Granted Sep 25, 2007·5 cites·40 claims
- 3563US9543863B1Method to eliminate current surge during spindle spin upMARVELL INT LTD·Filed 2013·Granted Jan 10, 2017·1 cites·16 claims
- 3663US8582227B2Lowest power mode for a mobile driveKRISHNAMOORTHY RAVISHANKER·Filed 2008·Granted Nov 12, 2013·2 cites·17 claims
- 3757US9466596B2Geometry of MOS device with low on-resistanceSUTARDJA SEHAT·Filed 2007·Granted Oct 11, 2016·1 cites·11 claims
- 3855US9425721B2Systems and methods for adaptive motor speed controlMARVELL WORLD TRADE LTD·Filed 2014·Granted Aug 23, 2016·0 cites·18 claims
- 3955US9334870B2Systems and methods for programming of a cooling fan arrangementMARVELL WORLD TRADE LTD·Filed 2012·Granted May 10, 2016·0 cites·18 claims
- 4054US9695832B2Apparatuses for controlling operation of a motor of a fan assembly based on an induced voltage or a back electromotive forceMARVELL WORLD TRADE LTD·Filed 2014·Granted Jul 4, 2017·0 cites·19 claims
- 4153US8497647B1Motor spindle control system and methodMARVELL INT LTD·Filed 2012·Granted Jul 30, 2013·0 cites·10 claims
- 4251US9502957B2System and method for supplying power at startupMARVELL WORLD TRADE LTD·Filed 2014·Granted Nov 22, 2016·0 cites·22 claims
- 4350US9258863B2Method and apparatus for TRIAC applicationsKRISHNAMOORTHY RAVISHANKER·Filed 2012·Granted Feb 9, 2016·0 cites·18 claims
- 4450US8278861B2External disturbance detection system and method for two-phase motor control systemsLEONG FOO LENG·Filed 2012·Granted Oct 2, 2012·0 cites·14 claims
- 4549US8981484B2Ballast resistor for super-high-voltage devicesSUTARDJA SEHAT·Filed 2012·Granted Mar 17, 2015·0 cites·14 claims
- 4648US8742735B2High-voltage startup circuitKRISHNAMOORTHY RAVISHANKER·Filed 2012·Granted Jun 3, 2014·0 cites·20 claims
- 4748US7808193B1Motor spindle control system and methodMARVELL INT LTD·Filed 2007·Granted Oct 5, 2010·1 cites·30 claims
- 4848US7453221B1System for controlling rotation of a disk driveMARVELL INT LTD·Filed 2006·Granted Nov 18, 2008·0 cites·11 claims
- 4947US8164285B2External disturbance detection system and method for two-phase motor control systemsLEONG FOO LENG·Filed 2009·Granted Apr 24, 2012·1 cites·20 claims
- 5047US2015187754A1Ballast resistor for super-high-voltage devicesMARVELL WORLD TRADE LTD·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →