Inventor · disambiguated record
Junjie Zheng
Also filed as: ZHENG JUNJIE
57 granted patents·5 pending applications·1,294 citations·filing 2003–2023
99Inventor score
Files withIWATT INC21HUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY20DIALOG SEMICONDUCTOR INC7ZHENG JUNJIE5LI YONG2
Top patents by PatentIndex Score
62 records- 0199US7161816B2System and method for input current shaping in a power converterIWATT INC·Filed 2005·Granted Jan 9, 2007·145 cites·28 claims
- 0299US6944034B1System and method for input current shaping in a power converterIWATT INC·Filed 2003·Granted Sep 13, 2005·330 cites·27 claims
- 0398US8018743B2Adaptive control for transition between multiple modulation modes in a switching power converterIWATT INC·Filed 2009·Granted Sep 13, 2011·71 cites·13 claims
- 0497US11189220B1Display device with distributed driver circuits switchable between serial and parallel communication modesHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2021·Granted Nov 30, 2021·14 cites·22 claims
- 0597US10909911B1Display device with distributed driver circuits and shared multi-wire communication interface for dimming dataHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Feb 2, 2021·21 cites·25 claims
- 0696US11087672B1Display device with selectable LED current levels based on brightness dataHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Aug 10, 2021·4 cites·20 claims
- 0796US10985665B1Voltage sensing of an active clamp switching power converter circuit using an auxiliary winding having a same polarity as a primary windingHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Apr 20, 2021·6 cites·20 claims
- 0896US8222832B2Adaptive dimmer detection and control for LED lampZHENG JUNJIE·Filed 2009·Granted Jul 17, 2012·115 cites·26 claims
- 0996US6972969B1System and method for controlling current limit with primary side sensingIWATT INC·Filed 2004·Granted Dec 6, 2005·122 cites·14 claims
- 1095US11436970B2Addressing and redundancy schemes for distributed driver circuits in a display deviceHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2021·Granted Sep 6, 2022·4 cites·21 claims
- 1195US11257421B2Display device with single package light emitting diode and driver circuitHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Feb 22, 2022·5 cites·20 claims
- 1295US7928670B2LED driver with multiple feedback loopsIWATT INC·Filed 2008·Granted Apr 19, 2011·55 cites·21 claims
- 1393US9084325B2Adaptive dimmer detection and control for LED lampDIALOG SEMICONDUCTOR INC·Filed 2015·Granted Jul 14, 2015·9 cites·16 claims
- 1493US8289732B2Controller for switching power converter driving BJT based on primary side adaptive digital controlLI YONG·Filed 2009·Granted Oct 16, 2012·25 cites·23 claims
- 1593US8049481B2Adaptive multi-mode digital control improving light-load efficiency in switching power convertersIWATT INC·Filed 2009·Granted Nov 1, 2011·29 cites·20 claims
- 1693US7558093B1Power converter with emulated peak current mode controlIWATT INC·Filed 2006·Granted Jul 7, 2009·35 cites·22 claims
- 1792US11050350B1Controlling an active clamp switching power converter circuit based on a sensed voltage drop on an auxiliary windingHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Jun 29, 2021·7 cites·17 claims
- 1892US8199539B2Adaptive control for transition between multiple modulation modes in a switching power converterWANG XIAOYAN·Filed 2011·Granted Jun 12, 2012·13 cites·13 claims
- 1992US7443700B2On-time control for constant current mode in a flyback power supplyIWATT INC·Filed 2007·Granted Oct 28, 2008·39 cites·9 claims
- 2091US11250771B2Display device with distributed arrays of driver circuits and sensorsHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Feb 15, 2022·2 cites·20 claims
- 2191US11211001B2Display device with feedback via serial connections between distributed driver circuitsHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Dec 28, 2021·2 cites·26 claims
- 2291US7876582B2Compensating on-time delay of switching transistor in switching power convertersIWATT INC·Filed 2010·Granted Jan 25, 2011·10 cites·14 claims
- 2390US11276345B2Display device with feedback via parallel connections from distributed driver circuits to a single wire interfaceHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Mar 15, 2022·2 cites·21 claims
- 2489US9844113B2Adjusting color temperature in a dimmable LED lighting systemDIALOG SEMICONDUCTOR INC·Filed 2013·Granted Dec 12, 2017·11 cites·20 claims
- 2588US8854842B2Digital communication link between secondary side and primary side of switching power converterIWATT INC·Filed 2012·Granted Oct 7, 2014·9 cites·22 claims
- 2688US8553431B2Switching power converter with load impedance detectionZHENG JUNJIE·Filed 2010·Granted Oct 8, 2013·11 cites·18 claims
- 2787US10063073B2USB power converter with bleeder circuit for fast correction of output voltage by discharging output capacitorDIALOG SEMICONDUCTOR INC·Filed 2014·Granted Aug 28, 2018·12 cites·19 claims
- 2887US7433211B1System and method for input current shaping in a power converterIWATT INC·Filed 2004·Granted Oct 7, 2008·44 cites·16 claims
- 2986US11289011B2Power line communication in a display device with distributed driver circuitsHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Mar 29, 2022·2 cites·20 claims
- 3085US11385737B1Electronic deviceTPK TOUCH SYSTEMS XIAMEN INC·Filed 2021·Granted Jul 12, 2022·2 cites·20 claims
- 3185US8755203B2Valley-mode switching schemes for switching power convertersLI YONG·Filed 2009·Granted Jun 17, 2014·21 cites·18 claims
- 3285US8643303B2Adaptive dimmer detection and control for LED lampZHENG JUNJIE·Filed 2012·Granted Feb 4, 2014·6 cites·25 claims
- 3384US8199537B2Detecting light load conditions and improving light load efficiency in a switching power converterYAN LIANG·Filed 2009·Granted Jun 12, 2012·22 cites·20 claims
- 3482US8970135B2Adaptive dimmer detection and control for LED lampDIALOG SEMICONDUCTOR INC·Filed 2013·Granted Mar 3, 2015·4 cites·20 claims
- 3580US11217153B1Display device with distributed driver circuits and shared multi-wire communication interface for dimming dataHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Jan 4, 2022·1 cites·19 claims
- 3680US9420645B2Constant current control buck converter without current senseIWATT INC·Filed 2013·Granted Aug 16, 2016·5 cites·17 claims
- 3780US9318963B2Switching power converter with secondary to primary messagingIWATT INC·Filed 2013·Granted Apr 19, 2016·5 cites·20 claims
- 3880US7880447B1Power converter controller IC having input voltage pin with multiple functionsIWATT INC·Filed 2006·Granted Feb 1, 2011·13 cites·26 claims
- 3979US7724547B1Compensating on-time delay of switching transistor in switching power convertersIWATT INC·Filed 2007·Granted May 25, 2010·12 cites·14 claims
- 4078US9154039B2Switching power converter with secondary-side dynamic load detection and primary-side feedback and controlIWATT INC·Filed 2013·Granted Oct 6, 2015·5 cites·18 claims
- 4175US7554821B1System and method for input current shaping in a power converterIWATT INC·Filed 2008·Granted Jun 30, 2009·9 cites·62 claims
- 4275US7548438B1System and method for input current shaping in a power converterIWATT INC·Filed 2008·Granted Jun 16, 2009·9 cites·31 claims
- 4375US7511973B2Constant current mode ripple attenuation method in flyback power supplyIWATT INC·Filed 2007·Granted Mar 31, 2009·12 cites·9 claims
- 4475US2022028337A1Display device with feedback via serial connections between distributed driver circuitsHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2021·Application pending·0 cites
- 4574US2022059022A1Display device with feedback via parallel connections from distributed driver circuits to a single wire interfaceHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2021·Application pending·0 cites
- 4673US2021366370A1Addressing scheme for a display device with distributed sensors in a display areaHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Application pending·0 cites
- 4771US8964422B2EMI frequency spreading method for switching power converterIWATT INC·Filed 2012·Granted Feb 24, 2015·3 cites·26 claims
- 4867US11411503B2Voltage sensing of an active clamp switching power converter circuit using an auxiliary winding having a same polarity as a primary windingHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2020·Granted Aug 9, 2022·0 cites·20 claims
- 4965US11403998B2Display device with selectable LED current levels based on brightness dataHUAYUAN SEMICONDUCTOR SHENZHEN LTD COMPANY·Filed 2021·Granted Aug 2, 2022·0 cites·20 claims
- 5064US9444364B2Adaptive peak power controlDIALOG SEMICONDUCTOR INC·Filed 2014·Granted Sep 13, 2016·2 cites·12 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →