Ka Man Au
157Patents
34h-index
105Co-inventors
93Inventor score
Filing activity: Sep 17, 1998 → Dec 1, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7128266B2 | Hand-supportable digital imaging-based bar code symbol reader supporting narrow-area and wide-area modes of illumination and image capture | Physics | 688 | Expired |
| US8317105B2 | Optical scanning system having an extended programming mode and method of unlocking restricted extended classes of features and functionalities embodied therewithin | Physics | 547 | Active |
| US8479992B2 | Optical code symbol reading system employing an acoustic-waveguide structure for coupling sonic energy, produced from an electro-transducer, to sound wave ports formed in the system housing | Physics | 540 | Active |
| US8517271B2 | Optical code symbol reading system employing a LED-driven optical-waveguide structure for illuminating a manually-actuated trigger switch integrated within a hand-supportable system housing | Physics | 533 | Active |
| US9412242B2 | Multifunction point of sale system | Physics | 415 | Active |
| US7527205B2 | Automated package dimensioning system | Physics | 189 | Active |
| US6971580B2 | AUTOMATED METHOD OF AND SYSTEM FOR DIMENSIONING OBJECTS OVER A CONVEYOR BELT STRUCTURE BY APPLYING CONTOURING TRACING, VERTICE DETECTION, CORNER POINT DETECTION, AND CORNER POINT REDUCTION METHODS TO TWO-DIMENSIONAL RANGE DATA MAPS OF THE SPACE ABOVE THE CONVEYOR BELT CAPTURED BY AN AMPLITUDE MODULATED LASER SCANNING BEAM | Physics | 172 | Expired |
| US6837432B2 | METHOD OF AND APPARATUS FOR AUTOMATICALLY CROPPING CAPTURED LINEAR IMAGES OF A MOVING OBJECT PRIOR TO IMAGE PROCESSING USING REGION OF INTEREST (ROI) COORDINATE SPECIFICATIONS CAPTURED BY AN OBJECT PROFILING SUBSYSTEM | Electricity | 154 | Expired |
| US7104453B1 | Unitary package identification and dimensioning system employing ladar-based scanning methods | Physics | 133 | Expired |
| US6457642B1 | Automated system and method for identifying and measuring packages transported through a laser scanning tunnel | Physics | 122 | Expired |
| US6705526B1 | AUTOMATED METHOD OF AND SYSTEM FOR DIMENSIONING OBJECTS TRANSPORTED THROUGH A WORK ENVIRONMENT USING CONTOUR TRACING, VERTICE DETECTION, CORNER POINT DETECTION, AND CORNER POINT REDUCTION METHODS ON TWO-DIMENSIONAL RANGE DATA MAPS CAPTURED BY AN AMPLITUDE MODULATED LASER SCANNING BEAM | Physics | 118 | Expired |
| US6517004B2 | Automated system for identifying and dimensioning packages transported through a laser scanning tunnel using laser scanning beam indexing techniques | Physics | 113 | Expired |
| US6976626B2 | Wireless bar code symbol driven portable data terminal (PDT) system adapted for single handed operation | Physics | 80 | Expired |
| US7086595B2 | METHOD 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 THEREIN | Physics | 71 | Expired |
| US6554189B1 | Automated system and method for identifying and measuring packages transported through a laser scanning tunnel | Physics | 64 | Expired |
| US7240844B2 | Hand-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 circuitry | Physics | 62 | Expired |
| US6490376B1 | Skew processing of raster scan images | Physics | 61 | Expired |
| US7490774B2 | Hand-supportable imaging based bar code symbol reader employing automatic light exposure measurement and illumination control subsystem integrated therein | Physics | 58 | Expired |
| US7281661B2 | Hand-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 reflection | Physics | 55 | Expired |
| US6978936B2 | Method of and system for automatically producing digital images of moving objects, with pixels having a substantially uniform white level independent of the velocities of the moving objects | Electricity | 53 | Expired |
| US6971577B2 | Method of and system for automatically producing digital images of a moving object, with pixels having a substantially uniform white level independent of the velocity of said moving object | Electricity | 53 | Expired |
| US6830185B2 | Method of and system for automatically producing digital images of a moving object, with pixels having a substantially uniform white level independent of the velocity of said moving object | Electricity | 51 | Expired |
| US6705528B2 | Automated system and method for identifying and measuring packages transported through a laser scanning tunnel | Physics | 46 | Expired |
| US7185817B2 | Hand-supportable digital imaging-based bar codes symbol reader employing multi-mode subsystems | Physics | 44 | Expired |
| US7237722B2 | Hand-supported imaging-based bar code symbol reader employing a multi-mode image-processing based bar code reading subsystem with modular image-processing architecture | Physics | 40 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.