Inventor · disambiguated record
Duanfeng He
Also filed as: HE DUANFENG · HE DUANFENG JACKSON
109 granted patents·24 pending applications·4,333 citations·filing 1988–2024
99Inventor score
Files withSYMBOL TECHNOLOGIES INC75HE DUANFENG17ZEBRA TECH CORP16SYMBOL TECHNOLOGIES LLC5JOSEPH EUGENE3
Top patents by PatentIndex Score
133 records- 0199US6336587B1Optical code reader for producing video displays and measuring physical parameters of objectsSYMBOL TECHNOLOGIES INC·Filed 1998·Granted Jan 8, 2002·469 cites·18 claims
- 0298US5710417ABar code reader for reading both one dimensional and two dimensional symbologies with programmable resolutionSYMBOL TECHNOLOGIES INC·Filed 1995·Granted Jan 20, 1998·481 cites·22 claims
- 0397US6655597B1Portable instrument for electro-optically reading indicia and for projecting a bit-mapped color imageSYMBOL TECHNOLOGIES INC·Filed 2000·Granted Dec 2, 2003·178 cites·18 claims
- 0497US6250551B1Autodiscrimination and line drawing techniques for code readersSYMBOL TECHNOLOGIES INC·Filed 1998·Granted Jun 26, 2001·296 cites·34 claims
- 0596US7296744B2Swipe imager scan engineSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Nov 20, 2007·82 cites·16 claims
- 0696US6995762B1Measurement of dimensions of solid objects from two-dimensional image(s)SYMBOL TECHNOLOGIES INC·Filed 2002·Granted Feb 7, 2006·177 cites·33 claims
- 0796US6824058B2Optical code reader for measuring physical parameters of objectsSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Nov 30, 2004·85 cites·20 claims
- 0896US6340114B1Imaging engine and method for code readersSYMBOL TECHNOLOGIES INC·Filed 1998·Granted Jan 22, 2002·635 cites·52 claims
- 0994US11645022B1Dynamic configuration of a printer for a printing operationZEBRA TECH CORP·Filed 2021·Granted May 9, 2023·3 cites·23 claims
- 1094US7559473B2Sensor for activating an aiming pattern of a handheld scannerSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Jul 14, 2009·39 cites·3 claims
- 1194US7430682B2Processing image data from multiple sourcesSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Sep 30, 2008·38 cites·30 claims
- 1294US6405925B2Autodiscrimination and line drawing techniques for code readersSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Jun 18, 2002·98 cites·7 claims
- 1394US6340119B2Techniques for reading two dimensional code, including MaxiCodeSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Jan 22, 2002·85 cites·4 claims
- 1493US6910633B2Portable instrument for electro-optically reading indicia and for projecting a bit-mapped color imageSYMBOL TECHNOLOGIES INC·Filed 2003·Granted Jun 28, 2005·76 cites·12 claims
- 1592US7823787B2Swipe imager scan engineSYMBOL TECHNOLOGIES INC·Filed 2007·Granted Nov 2, 2010·39 cites·23 claims
- 1692US7204418B2Pulsed illumination in imaging readerSYMBOL TECHNOLOGIES INC·Filed 2004·Granted Apr 17, 2007·71 cites·12 claims
- 1792US6234397B1Techniques for reading two dimensional code, including maxicodeSYMBOL TECHNOLOGIES INC·Filed 2000·Granted May 22, 2001·65 cites·8 claims
- 1891US12067449B24D barcode mapping for moving objectsZEBRA TECH CORP·Filed 2022·Granted Aug 20, 2024·1 cites·24 claims
- 1991US8028919B2Imaging bar code reader with single prism focus adjustmentSYMBOL TECHNOLOGIES INC·Filed 2007·Granted Oct 4, 2011·24 cites·21 claims
- 2091US7066388B2System and method for verifying RFID readsSYMBOL TECHNOLOGIES INC·Filed 2003·Granted Jun 27, 2006·81 cites·20 claims
- 2189US7350711B2Ambient light shield and color filter for imaging-based bar code readerSYMBOL TECHNOLOGIES INC·Filed 2006·Granted Apr 1, 2008·22 cites·20 claims
- 2289US7309011B2Method of authenticating products using hardware compatibility flagSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Dec 18, 2007·21 cites·25 claims
- 2389US7131587B2System and method for illuminating and reading optical codes imprinted or displayed on reflective surfacesSYMBOL TECHNOLOGIES INC·Filed 2004·Granted Nov 7, 2006·51 cites·34 claims
- 2489US6088482ATechniques for reading two dimensional code, including maxicodeSYMBOL TECHNOLOGIES INC·Filed 1998·Granted Jul 11, 2000·96 cites·19 claims
- 2588US7364074B2Method of authenticating products using analog and digital identifiersSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Apr 29, 2008·28 cites·24 claims
- 2687US10140497B1Methods and system for reading barcodes captured on multiple imagesSYMBOL TECHNOLOGIES LLC·Filed 2017·Granted Nov 27, 2018·5 cites·23 claims
- 2787US8602308B2Imaging device having light field sensorHE DUANFENG·Filed 2011·Granted Dec 10, 2013·9 cites·26 claims
- 2887US7163149B2System and method for illuminating and reading optical codes imprinted or displayed on reflective surfacesSYMBOL TECHNOLOGIES INC·Filed 2004·Granted Jan 16, 2007·42 cites·31 claims
- 2987US6176428B1Techniques for reading postal codeSYMBOL TECHNOLOGIES INC·Filed 1999·Granted Jan 23, 2001·97 cites·23 claims
- 3084US8079524B2Imaging-based scanner including border searching for image acquisitionHE DUANFENG·Filed 2009·Granted Dec 20, 2011·13 cites·20 claims
- 3184US7337970B2Barcode scanner decodingSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Mar 4, 2008·13 cites·79 claims
- 3283US4921278AIdentification system using computer generated moireCHINESE ACADEMY OF SCIENCES·Filed 1988·Granted May 1, 1990·199 cites·5 claims
- 3382US8052058B2Scanner for product authenticationSYMBOL TECHNOLOGIES INC·Filed 2008·Granted Nov 8, 2011·8 cites·22 claims
- 3482US7986340B2Arrangement for and method of projecting a color image by switching scan directions in alternate framesMICROVISION INC·Filed 2010·Granted Jul 26, 2011·4 cites·17 claims
- 3582US7866557B2Imaging-based bar code reader utilizing modified rolling shutter operationSYMBOL TECHNOLOGIES INC·Filed 2007·Granted Jan 11, 2011·11 cites·20 claims
- 3682US7859567B2Arrangement for and method of projecting a color image by switching scan directions in alternate framesMICROVISION INC·Filed 2006·Granted Dec 28, 2010·6 cites·13 claims
- 3782US6811085B2Miniature imagerSYMBOL TECHNOLOGIES INC·Filed 2002·Granted Nov 2, 2004·19 cites·10 claims
- 3882US6766955B2Optical code reader for producing video displaysSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Jul 27, 2004·19 cites·21 claims
- 3981US9792477B1System for, and method of, controlling illumination of direct part marking (DPM) targets to be read by image captureSYMBOL TECHNOLOGIES LLC·Filed 2016·Granted Oct 17, 2017·3 cites·13 claims
- 4081US7566004B2Method and apparatus for extending the range of a product authentication deviceSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Jul 28, 2009·8 cites·35 claims
- 4181US6772950B2System and method for an image capturing networkSYMBOL TECHNOLOGIES INC·Filed 2002·Granted Aug 10, 2004·19 cites·32 claims
- 4281US6328213B1Method of processing an analog electrical signal containing information representative of reflected light from coded indicia, wherein the electrical signal contains edge transitionsSYMBOL TECHNOLOGIES INC·Filed 1998·Granted Dec 11, 2001·60 cites·24 claims
- 4380US8066188B2Point-of-transaction workstation for electro-optically reading one-dimensional and two-dimensional indicia by image capturePATEL MEHUL M·Filed 2010·Granted Nov 29, 2011·5 cites·14 claims
- 4480US7883214B2Compact image projection arrangement with correction for laser beam angular misalignmentMICROVISION INC·Filed 2007·Granted Feb 8, 2011·5 cites·15 claims
- 4579US7726572B2Bar code scanning decodingSYMBOL TECHNOLOGIES INC·Filed 2005·Granted Jun 1, 2010·8 cites·51 claims
- 4679US7726573B2Compact autofocus bar code reader with moving mirrorSYMBOL TECHNOLOGIES INC·Filed 2007·Granted Jun 1, 2010·9 cites·13 claims
- 4779US7578444B2Methods and apparatus for dynamic signal processingSYMBOL TECHNOLOGIES INC·Filed 2004·Granted Aug 25, 2009·26 cites·49 claims
- 4879US6913199B2System and method for verifying optical character recognition of optical code readsSYMBOL TECHNOLOGIES INC·Filed 2003·Granted Jul 5, 2005·40 cites·18 claims
- 4978US7395970B2Zero-footprint camera-based point-of-sale bar code presentation scanning systemSYMBOL TECHNOLOGIES INC·Filed 2004·Granted Jul 8, 2008·22 cites·40 claims
- 5078US6996634B1Configurable operating system for control of a mobile I/O deviceSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Feb 7, 2006·26 cites·96 claims
Showing the top 50 of 133 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →