Inventor · disambiguated record
Ka Y. Leung
Also filed as: LEUNG KA · LEUNG KA Y · LEUNG KA YIN
80 granted patents·5 pending applications·2,089 citations·filing 1995–2019
99Inventor score
Files withSILICON LAB INC30SILICON LABS CP INC21CYGNAL INTEGRATED PRODUCTS INC11CRYSTAL SEMICONDUCTOR CORP5INTEMATIX CORP3
Top patents by PatentIndex Score
85 records- 0197US8597545B1Red-emitting nitride-based calcium-stabilized phosphorsINTEMATIX CORP·Filed 2013·Granted Dec 3, 2013·47 cites·30 claims
- 0296US8169108B2Capacitive isolatorDUPUIS TIMOTHY·Filed 2008·Granted May 1, 2012·84 cites·12 claims
- 0396US7902627B2Capacitive isolation circuitry with improved common mode detectorSILICON LAB INC·Filed 2009·Granted Mar 8, 2011·63 cites·20 claims
- 0496US7737871B2MCU with integrated voltage isolator to provide a galvanic isolation between input and outputSILICON LAB INC·Filed 2008·Granted Jun 15, 2010·61 cites·29 claims
- 0596US7188199B2DMA controller that restricts ADC from memory without interrupting generation of digital words when CPU accesses memorySILICON LABS CP INC·Filed 2004·Granted Mar 6, 2007·85 cites·12 claims
- 0696US6313779B1Comparator-amplifier configuration in an ADCFiled 2000·Granted Nov 6, 2001·68 cites·31 claims
- 0796US6307497B1Programmable gain ADCCYGNAL INTEGRATED PRODUCTS INC·Filed 2000·Granted Oct 23, 2001·71 cites·21 claims
- 0895US7821428B2MCU with integrated voltage isolator and integrated galvanically isolated asynchronous serial data linkSILICON LAB INC·Filed 2008·Granted Oct 26, 2010·53 cites·23 claims
- 0995US7171542B1Reconfigurable interface for coupling functional input/output blocks to limited number of i/o pinsSILICON LABS CP INC·Filed 2001·Granted Jan 30, 2007·55 cites·11 claims
- 1095US6448917B1DAC using current source driving main resistor stringCYGNAL INTEGRATED PRODUCTS INC·Filed 2000·Granted Sep 10, 2002·71 cites·24 claims
- 1195US6384763B1Segemented D/A converter with enhanced dynamic rangeCYGNAL INTEGRATED PRODUCTS INC·Filed 2000·Granted May 7, 2002·67 cites·32 claims
- 1294US5696708ADigital filter with decimated frequency responseCRYSTAL SEMICONDUCTOR·Filed 1995·Granted Dec 9, 1997·94 cites·38 claims
- 1393US8198951B2Capacitive isolation circuitryDONG ZHIWEI·Filed 2009·Granted Jun 12, 2012·36 cites·20 claims
- 1493US5777912ALinear phase finite impulse response filter with pre-additionCRYSTAL SEMICONDUCTOR CORP·Filed 1996·Granted Jul 7, 1998·85 cites·32 claims
- 1592US6456220B1Analog-to-digital converter for processing differential and single-ended inputsCYGNAL INTEGRATED PRODUCTS INC·Filed 2000·Granted Sep 24, 2002·44 cites·23 claims
- 1691US7456621B2Digital controller based power factor correction circuitSILICON LAB INC·Filed 2006·Granted Nov 25, 2008·29 cites·13 claims
- 1791US7417877B2Digital power supply with programmable soft startSILICON LAB INC·Filed 2005·Granted Aug 26, 2008·36 cites·19 claims
- 1890US7428159B2Digital PWM controllerSILICON LAB INC·Filed 2005·Granted Sep 23, 2008·35 cites·29 claims
- 1988US8451032B2Capacitive isolator with schmitt triggerDONG ZHIWEI·Filed 2010·Granted May 28, 2013·9 cites·23 claims
- 2088US7502240B2Distributed power supply system with separate SYNC control for controlling remote digital DC/DC convertersSILICON LAB INC·Filed 2006·Granted Mar 10, 2009·25 cites·19 claims
- 2188US7061421B1Flash ADC with variable LSBSILICON LAB INC·Filed 2005·Granted Jun 13, 2006·28 cites·17 claims
- 2288US6433717B1D/A resistor strings with cross coupling switchesCYGNAL INTEGRATED PRODUCTS INC·Filed 2000·Granted Aug 13, 2002·34 cites·22 claims
- 2387US7518350B2MCU/driver point of load digital controller with optimized voltageSILICON LAB INC·Filed 2005·Granted Apr 14, 2009·25 cites·8 claims
- 2487US7493505B2MCU with low power mode of operationSILICON LAB INC·Filed 2005·Granted Feb 17, 2009·17 cites·11 claims
- 2587US6271780B1Gain ranging analog-to-digital converter with error correctionCIRRUS LOGIC INC·Filed 1998·Granted Aug 7, 2001·97 cites·36 claims
- 2686US7446430B2Plural load distributed power supply system with shared master for controlling remote digital DC/DC convertersSILICON LAB INC·Filed 2006·Granted Nov 4, 2008·24 cites·12 claims
- 2786US7426123B2Finite state machine digital pulse width modulator for a digitally controlled power supplySILICON LAB INC·Filed 2005·Granted Sep 16, 2008·24 cites·30 claims
- 2885US6891487B2Capacitor calibration in SAR converterSILICON LABS CP INC·Filed 2004·Granted May 10, 2005·34 cites·20 claims
- 2985US6642877B2Method of forming D/A resistor strings with cross coupling switchesCYGNAL INTEGRATED PRODUCTS INC·Filed 2002·Granted Nov 4, 2003·28 cites·19 claims
- 3084US9793240B2Multiple die layout for facilitating the combining of an individual die into a single dieSILICON LAB INC·Filed 2014·Granted Oct 17, 2017·6 cites·10 claims
- 3184US7640455B2Digital PWM controller with programmable safe state in presence of faultSILICON LAB INC·Filed 2005·Granted Dec 29, 2009·13 cites·21 claims
- 3284US7245512B2PID based controller for DC—DC converter with post-processing filtersSILICON LAB INC·Filed 2005·Granted Jul 17, 2007·21 cites·18 claims
- 3383US8441325B2Isolator with complementary configurable memoryCALLAHAN PHIL A·Filed 2009·Granted May 14, 2013·22 cites·20 claims
- 3483US7301488B2Digital PWM controller for preventing limit cycle oscillationsSILICON LAB INC·Filed 2005·Granted Nov 27, 2007·12 cites·25 claims
- 3583US6448916B1Dual sub-DAC resistor strings with analog interpolationCYGNAL INTEGRATED PRODUCTS INC·Filed 2000·Granted Sep 10, 2002·29 cites·26 claims
- 3682US5748040AFully differential high gain cascode amplifierCRYSTAL SEMICONDUCTOR CORP·Filed 1996·Granted May 5, 1998·50 cites·26 claims
- 3781US7498962B2Analog-to-digital converter with low power track-and-hold modeSILICON LABS CP INC·Filed 2006·Granted Mar 3, 2009·8 cites·21 claims
- 3881US7498787B2Digital PWM controller for digital power supply having programmable dead timesSILICON LAB INC·Filed 2005·Granted Mar 3, 2009·11 cites·33 claims
- 3981US6882298B2SAR analog-to-digital converter with two single ended inputsSILICON LABS CP INC·Filed 2003·Granted Apr 19, 2005·27 cites·10 claims
- 4081US6400300B1D/A converter street effect compensationCYGNAL INTEGRATED PRODUCTS INC·Filed 2000·Granted Jun 4, 2002·27 cites·21 claims
- 4180US8681026B2Digital to analog converterXIAO JINWEN·Filed 2012·Granted Mar 25, 2014·9 cites·20 claims
- 4280US7855905B2Digital power supply controller with integrated microcontrollerSILICON LAB INC·Filed 2008·Granted Dec 21, 2010·10 cites·12 claims
- 4380US7660968B2Reconfigurable interface for coupling functional input/output blocks to limited number of I/O pinsSILICON LABS CP INC·Filed 2007·Granted Feb 9, 2010·7 cites·22 claims
- 4479US7613901B2Comparators in IC with programmably controlled positive / negative hysteresis level and open-drain / push-pull output coupled to crossbar switch or rising / falling edge interrupt generationSILICON LABS CP INC·Filed 2007·Granted Nov 3, 2009·6 cites·11 claims
- 4579US5719573AAnalog modulator for A/D converter utilizing leap-frog filterCIRRUS LOGIC INC·Filed 1995·Granted Feb 17, 1998·45 cites·18 claims
- 4678US6724336B2Segmented D/A converter with enhanced dynamic rangeCYGNAL INTEGRATED PRODUCTS INC·Filed 2002·Granted Apr 20, 2004·21 cites·24 claims
- 4777US7319312B2Digital power supply controller with voltage positioningSILICON LAB INC·Filed 2005·Granted Jan 15, 2008·19 cites·20 claims
- 4874US6956518B1Method and apparatus for subclocking a SAR analog-to-digital converterSILICON LABS CP INC·Filed 2004·Granted Oct 18, 2005·19 cites·42 claims
- 4973US7511465B2Digital pulse width modulated power supply with variable LSBSILICON LAB INC·Filed 2008·Granted Mar 31, 2009·9 cites·17 claims
- 5073US6985101B2High speed comparator with blocking switches for SAR convertorSILICON LABS CP INC·Filed 2003·Granted Jan 10, 2006·23 cites·8 claims
Showing the top 50 of 85 patent records by PatentIndex Score.
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