Inventor · disambiguated record
Wenhua Zhang
Also filed as: ZHANG WENHUA
59 granted patents·1,863 citations·filing 2003–2020
99Inventor score
Files withMETROLOGIC INSTR INC38MCUBE INC11HEWLETT PACKARD DEVELOPMENT CO3ZHANG WENHUA2MATHAI SAGI VARGHESE1
Top patents by PatentIndex Score
59 records- 0199US7128266B2Hand-supportable digital imaging-based bar code symbol reader supporting narrow-area and wide-area modes of illumination and image captureMETROLOGIC INSTR INC·Filed 2003·Granted Oct 31, 2006·785 cites·8 claims
- 0297US7513430B2Digital image capturing and processing system employing an area-type image sensing array exposed to narrow-band illumination from a narrow-band illumination subsystem for a time duration controlled using a photodetector operated independently from said area-type image sensing arrayMETROLOGIC INSTR INC·Filed 2006·Granted Apr 7, 2009·36 cites·28 claims
- 0397US7503499B2Digital image capturing and processing system producing narrow-band illumination when image sensor elements in a state of integration, and simultaneously detecting narrow-band illumination using an area-type image sensor and independently-operated photo-detectorMETROLOGIC INSTR INC·Filed 2006·Granted Mar 17, 2009·36 cites·31 claims
- 0497US7086595B2Method of and apparatus for processing captured digital images of objects within a semi-automatic hand-supportable imaging-based bar code symbol reader so as to read 1d and/or 2d bar code symbols graphically represented thereinMETROLOGIC INSTR INC·Filed 2004·Granted Aug 8, 2006·80 cites·28 claims
- 0596US7681799B2Method of reading code symbols using a digital image capturing and processing system employing a micro-computing platform with an event-driven multi-tier software architectureMETROLOGIC INSTR INC·Filed 2007·Granted Mar 23, 2010·35 cites·20 claims
- 0696US7527206B2Method of setting the time duration of illumination from an LED-based illumination array employed in a digital imaging-based code symbol reader, using an image-processing based illumination metering program executed therewithinMETROLOGIC INSTR INC·Filed 2006·Granted May 5, 2009·37 cites·28 claims
- 0796US7240844B2Hand-suportable imaging-based bar code symbol reader employing an automatic light exposure measurement and illumination control subsystem for measuring illumination exposure on CMOS image sensing array and controlling LED illumination array driver circuitryMETROLOGIC INSTR INC·Filed 2004·Granted Jul 10, 2007·70 cites·9 claims
- 0895US7281661B2Hand-supportable digital imaging-based bar code symbol reading system employing a method of intelligently illuminating an object so as to generate a digital image thereof which is substantially free of noise caused by specular-type reflectionMETROLOGIC INSTR INC·Filed 2004·Granted Oct 16, 2007·55 cites·25 claims
- 0994US7490774B2Hand-supportable imaging based bar code symbol reader employing automatic light exposure measurement and illumination control subsystem integrated thereinMETROLOGIC INSTR INC·Filed 2004·Granted Feb 17, 2009·63 cites·10 claims
- 1094US7320431B2Digital imaging-based bar code symbol reading system employing a multi-mode illumination subsystem with far-field and near field led-based illumination arraysMETROLOGIC INSTR INC·Filed 2004·Granted Jan 22, 2008·42 cites·19 claims
- 1194US7237722B2Hand-supported imaging-based bar code symbol reader employing a multi-mode image-processing based bar code reading subsystem with modular image-processing architectureMETROLOGIC INSTR INC·Filed 2004·Granted Jul 3, 2007·42 cites·42 claims
- 1294US7185817B2Hand-supportable digital imaging-based bar codes symbol reader employing multi-mode subsystemsMETROLOGIC INSTR INC·Filed 2004·Granted Mar 6, 2007·47 cites·9 claims
- 1393US7360706B2Hand-supportable imaging-based auto-discriminating 1D/2D bar code symbol reader employing a multi-mode image processing bar code symbol reading subsystem having a plurality of modes of operation which are dynamically reconfigurable in response to real-time image analysisMETROLOGIC INSTR INC·Filed 2004·Granted Apr 22, 2008·39 cites·18 claims
- 1493US7357325B2Hand-supportable imaging-based bar code symbol reader employing a CMOS-type image sensor using global exposure techniquesMETROLOGIC INSTR INC·Filed 2004·Granted Apr 15, 2008·39 cites·8 claims
- 1593US7255279B2Hand-supportable digital imaging-based bar code reading system wherein, during each imaging cycle, a single frame of pixel data is automatically detected by a CMOS area-type image sensing array when substantially all rows of pixels therein are in a state of integration and have a common integration time, and then pixel data is transmitted from said CMOS area-type image sensing array into a FIFO buffer, and then mapped into memory for subsequent image processingMETROLOGIC INSTR INC·Filed 2004·Granted Aug 14, 2007·37 cites·16 claims
- 1692US7503498B2Hand-supportable digital image capturing and processing system employing an area-type image sensing array exposed to illumination from an LED-based illumination array only when all sensor elements in said image-sensing array are activated and in a state of integrationMETROLOGIC INSTR INC·Filed 2006·Granted Mar 17, 2009·14 cites·11 claims
- 1792US7428998B2Automatic hand-supportable image-based bar code symbol reader having image-processing based bar code reading subsystem employing simple decode image processing operations applied in an outwardly-directed manner referenced from the center of a captured narrow-area digital image of an object bearing a 1D bar code symbolMETROLOGIC INSTR INC·Filed 2004·Granted Sep 30, 2008·34 cites·8 claims
- 1892US7178733B2Hand-supportable imaging-based bar code symbol reader employing automatic object presence and range detection to control the generation of near-field and far-field wide-area illumination during bar code symbol imaging operationsMETROLOGIC INSTR INC·Filed 2004·Granted Feb 20, 2007·32 cites·4 claims
- 1991US7267282B2Hand-supportable imaging-based bar code symbol reader capable of exposing an automatically detected object to a field of narrow-band LED-based illumination only when substantially all rows of pixels in a CMOS image sensing array are in a state of integrationMETROLOGIC INSTR INC·Filed 2004·Granted Sep 11, 2007·29 cites·5 claims
- 2091US7225989B2Method of performing auto-discrimination of 1D/2D bar code symbologies in a semi-automatic hand-supportable imaging-based bar code symbol reader having narrow-area and wide-area image capture modes of operationMETROLOGIC INSTR INC·Filed 2004·Granted Jun 5, 2007·29 cites·6 claims
- 2191US7188770B2Hand-supportable semi-automatic imaging-based bar code reading system wherein an led-based illumination subsystem automatically illuminates a detected target object in a narrow-area field of illumination, and illuminates the detected target object in a wide-area field of illumination upon manual activation of a trigger switchMETROLOGIC INSTR INC·Filed 2004·Granted Mar 13, 2007·31 cites·25 claims
- 2290US7637433B1Digital image capture and processing system employing a micro-computing platform with an event-driven multi-tier modular software architecture and supporting an image-processing based illumination metering program for automatically adjusting illumination during object illumination and imaging operationsMETROLOGIC INSTR INC·Filed 2007·Granted Dec 29, 2009·15 cites·24 claims
- 2389US7604175B2Method of reading bar code symbols using a digital-imaging based code symbol reading system employing an event-driven multi-tier modular software architecture and supporting automatic operating system login and loading of bar code symbol reading applicationMETROLOGIC INSTR INC·Filed 2007·Granted Oct 20, 2009·8 cites·12 claims
- 2489US7278575B2Hand-supportable image-based bar code symbol reader employing helically-sweeping feature-extraction analysis on a captured digital image of an object referenced from the center thereofMETROLOGIC INSTR INC·Filed 2004·Granted Oct 9, 2007·24 cites·6 claims
- 2589US7213762B2Hand-supportable imaging-based bar code symbol reader employing a CMOS-type image sensing array in combination with a band-pass optical filter subsystem, narrow-band illumination subsystem, and automatic light exposure measurement and illumination control subsystemMETROLOGIC INSTR INC·Filed 2004·Granted May 8, 2007·23 cites·5 claims
- 2686US7216810B2Hand-supportable multi-mode digital imaging-based bar code symbol reader employing an automatic illumination and exposure control subsystem that automatically controls the operation of a multi-mode led-based illumination subsystem so that detected objects are sufficiently illuminated and good quality digital images thereof are formed and detectedMETROLOGIC INSTR INC·Filed 2004·Granted May 15, 2007·17 cites·5 claims
- 2785US7611064B2Digital image capture and processing system having automatic illumination measurement and control capabilities realized using a photodetector operating independently of the image sensing array, and an image-processing based illumination metering program for automatically adjusting the illumination duration of the system during object illumination and imaging operationsMETROLOGIC INSTR INC·Filed 2006·Granted Nov 3, 2009·9 cites·15 claims
- 2885US7243847B2Digital imaging-based bar code symbol reader employing an LED-based illumination subsystem driven by an automatic light exposure measurement and illumination control subsystemMETROLOGIC INSTR INC·Filed 2004·Granted Jul 17, 2007·15 cites·9 claims
- 2982US10267636B1Method to test the quality factor of a MEMS gyroscope at chip probeMCUBE INC·Filed 2016·Granted Apr 23, 2019·4 cites·20 claims
- 3082US7293714B2Hand-supportable digital imaging-based bar code symbol reading system automatically processing captured images along parallel virtual scan lines based on the maximum pixel height of the region of interest (ROI)METROLOGIC INSTR INC·Filed 2004·Granted Nov 13, 2007·12 cites·8 claims
- 3182US7284705B2Hand-supportable semi-automatic digital imaging-based bar code symbol reading system realized upon a multi-tier modular software platformMETROLOGIC INSTR INC·Filed 2004·Granted Oct 23, 2007·12 cites·24 claims
- 3282US7225988B2Hand-supportable imaging-based bar code symbol reader employing a tri-mode led-based illumination subsystemMETROLOGIC INSTR INC·Filed 2004·Granted Jun 5, 2007·12 cites·27 claims
- 3381US8272266B2Gyroscopes using surface electrodesZHANG WENHUA·Filed 2009·Granted Sep 25, 2012·19 cites·27 claims
- 3481US7299986B2Digital imaging-based bar code symbol driven portable data terminal systemMETROLOGIC INSTR INC·Filed 2004·Granted Nov 27, 2007·11 cites·34 claims
- 3580US9075079B2Method and structure of an integrated MEMS inertial sensor device using electrostatic quadrature-cancellationMCUBE INC·Filed 2014·Granted Jul 7, 2015·7 cites·20 claims
- 3680US7510122B2Portable digital image capturing and processing system employing an area-type image sensing array exposed to illumination produced from an LED-based illumination array and measured using a photodector operated independently from said area-type image sensing arrayMETROLOGIC INSTR INC·Filed 2006·Granted Mar 31, 2009·3 cites·28 claims
- 3780US7347374B2Hand-supportable digital imaging-based bar code symbol reader employing an event-driven system control subsystem, automatic IR-based object detection, and trigger-switch activated image capture and processing subsystemMETROLOGIC INSTR INC·Filed 2004·Granted Mar 25, 2008·17 cites·12 claims
- 3877US9725304B2Method to package multiple MEMS sensors and actuators at different gases and cavity pressuresMCUBE INC·Filed 2015·Granted Aug 8, 2017·2 cites·20 claims
- 3976US11287459B2Magnetic photoacoustic composite non destructive testing device of power transmission line of photovoltaic grid based on corona effectUNIV NORTH CHINA·Filed 2020·Granted Mar 29, 2022·2 cites·7 claims
- 4076US9174838B2Distributed MEMS devices time synchronization methods and systemMCUBE INC·Filed 2013·Granted Nov 3, 2015·3 cites·17 claims
- 4176US7624926B2Method of automatically reading code symbols on objects present within the field of view (FOV) of a hand-supportable digital-imaging based code symbol reader, by simultaneously projecting an image cropping zone (ICZ) framing pattern and a field of illumination within the FOV during object illumination and imaging operationsMETROLOGIC INSTR INC·Filed 2006·Granted Dec 1, 2009·4 cites·17 claims
- 4276US7469835B2Digital-imaging based code symbol reading system employing an event-driven multi-tier modular software architecture and supporting automatic operating system login and loading of code symbol reading applicationMETROLOGIC INSTR INC·Filed 2007·Granted Dec 30, 2008·2 cites·15 claims
- 4375US7477441B1MEMS device with nanowire standoff layerHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Jan 13, 2009·7 cites·20 claims
- 4469US7325738B2Method of and system for determining the lower limit of decoding resolution in an imaging-based bar code symbol readerMETROLOGIC INSTR INC·Filed 2004·Granted Feb 5, 2008·4 cites·11 claims
- 4568US10036635B2Multi-axis MEMS rate sensor deviceMCUBE INC·Filed 2014·Granted Jul 31, 2018·3 cites·8 claims
- 4667US10322926B1MEMS device with reduced dynamic stress and methodsMCUBE INC·Filed 2015·Granted Jun 18, 2019·1 cites·20 claims
- 4765US7270272B2Digital image-based bar code symbol reading system employing a multi-mode image-processing symbol reading subsystemMETROLOGIC INSTR INC·Filed 2004·Granted Sep 18, 2007·10 cites·17 claims
- 4854US10046964B2MEMS structure with improved shielding and methodMCUBE INC·Filed 2014·Granted Aug 14, 2018·0 cites·8 claims
- 4954US7568625B2Hand-supportable digital image-processing based bar code symbol reading system employing image cropping zone (ICZ) framing and post-image capture croppingMETPOLOGIC INSTR INC·Filed 2004·Granted Aug 4, 2009·2 cites·5 claims
- 5053US8733171B2Compensating frequency mismatch in gyroscopesZHANG WENHUA·Filed 2008·Granted May 27, 2014·1 cites·11 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →