Patents by Inventor Ka Man Au

Ka Man Au has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6517004
    Abstract: A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: February 11, 2003
    Assignee: Metrologic Instruments, Inc.
    Inventors: Timothy A. Good, Andrew D. Dehennis, Xiaoxun Zhu, David M. Wilz, Sr., George B. Rockstein, Stephen J. Colavito, Robert E. Blake, Ka Man Au, George Kolis, C. Harry Knowles
  • Publication number: 20030006289
    Abstract: A fully automated package identification and measuring system in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol hereon. The mathematical models area analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogenous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Application
    Filed: February 14, 2002
    Publication date: January 9, 2003
    Inventors: Timothy A. Good, Andrew D. Dehennis, Xiaoxun Zhu, David M. Wilz, George B. Rockstein, Stephen J. Colavito, Robert E. Blake, Ka Man Au, George Kolis, C. Harry Knowles
  • Publication number: 20020179708
    Abstract: A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Application
    Filed: January 2, 2002
    Publication date: December 5, 2002
    Applicant: Metrologic Instruments, Inc.
    Inventors: Xiaoxun Zhu, Ka Man Au, Gennady Germaine, Timothy A. Good, Michael Schnee, Ian Scott, John Groot, David M. Wilz, George B. Rockstein, Robert E. Blake, LeRoy Dickson, Carl Harry Knowles
  • Publication number: 20020179716
    Abstract: A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Application
    Filed: February 19, 2002
    Publication date: December 5, 2002
    Inventors: Timothy A. Good, Xiaoxun Zhu, David M. Wilz, George B. Rockstein, Stephen J. Colavito, Robert E. Blake, Ka Man Au, Sankar Ghosh, George Kolis, Ian A. Scott, Andrew D. Dehennis, Thomas Amundsen, LeRoy Dickson, Carl Harry Knowles
  • Patent number: 6490376
    Abstract: Run length encoded data derived from a raster scanner at an arbitrary angle to the horizontal direction of a rectilinear symbol such as a two-dimensional PDF code is examined to detect the skew angle between the horizontal direction of the symbol and the horizontal direction of the raster. Using the detected skew angle, a computer generates a set of virtual scan lines overlaid on the real scan lines. The computer partitions the virtual scan lines and the real scan lines into associated real and virtual line segments having common intersection points. The locations of mark to space or space to mark transitions are mapped from the real line segments onto the virtual line segments. The system can handle run length encoded data with low computational overhead.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: December 3, 2002
    Assignee: Metrologic Instruments, Inc.
    Inventors: Ka Man Au, Zaioxun Zhu
  • Publication number: 20020153422
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Application
    Filed: February 1, 2002
    Publication date: October 24, 2002
    Inventors: Constantine J. Tsikos, Allan Wirth, Timothy A. Good, Andrew Jankevics, Steve Y. Kim, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Patrick A. Giordano, Jeffery Yorsz, Mark S. Schmidt, Stephen J. Colavito, David M. Wilz, Ka Man Au, William Svedas, Sankar Ghosh, Michael D. Schnee, Xiaoxun Zhu, C. Harry Knowles
  • Publication number: 20020145042
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Application
    Filed: October 31, 2001
    Publication date: October 10, 2002
    Inventors: C. Harry Knowles, Mark C. Schmidt, Xiaoxun Zhu, Shawn Defoney, Edward Skypala, Constantine J. Tsikos, Ka Man Au, Barry E. Schwartz, Allan Wirth, Andrew Jankevics, Timothy A. Good, Sankar Ghosh, Michael D. Schnee, George Kolis, Thomas Amundsen, Charles A. Naylor, Robert Blake, Russell Joseph Dobbs, Jeffery Yorsz, Patrick A. Giordano, Stephen J. Colavito, David W. Wilz, William Svedas, Steven Y. Kim, Dale M. Fischer, Jon Van Tassell
  • Publication number: 20020139853
    Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.
    Type: Application
    Filed: September 17, 2001
    Publication date: October 3, 2002
    Applicant: Metrologic Instruments, Inc.
    Inventors: Constantine J. Tsikos, Allan Wirth, Timothy A. Good, Andrew Jankevics, Steve Y. Kim, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Patrick A. Giordano, Jeffery Yorsz, Mark S. Schmidt, Stephen J. Colavito, David M. Wilz, Ka Man Au, William Svedas, Sankar Ghosh, Michael D. Schnee, Xiaoxun Zhu, C. Harry Knowles
  • Patent number: 6457642
    Abstract: A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: October 1, 2002
    Assignee: Metrologic Instruments, Inc.
    Inventors: Timothy A. Good, Xiaoxun Zhu, David M. Wilz, George B. Rockstein, Stephen J. Colavito, Robert E. Blake, Ka Man Au, Sankar Ghosh, George Kolis, Ian A. Scott, Thomas Amundsen, Gennady Germaine, Andrew D. Dehennis, LeRoy Dickson, Carl Harry Knowles
  • Patent number: 6382515
    Abstract: A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: May 7, 2002
    Assignee: Metrologic Instruments, Inc.
    Inventors: Timothy A. Good, Xiaoxun Zhu, David M. Wilz, George B. Rockstein, Stephen J. Colavito, Robert E. Blake, Ka Man Au, Sankar Ghosh, George Kolis, Ian A. Scott, Andrew D. Dehennis, Thomas Amundsen, LeRoy Dickson, Carl Harry Knowles
  • Publication number: 20020014533
    Abstract: A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Application
    Filed: June 7, 1999
    Publication date: February 7, 2002
    Inventors: XIAXUN ZHU, KA MAN AU, GENNADY GERMAINE, TIMOTHY A. GOOD, MICHAEL SCHNEE, GEORGE KOLIS, CHARLES NAYLOR, IAN SCOTT, JOHN GROOT, DAVID M. WILZ, GEORGE B. ROCKSTEIN, ROBERT E. BLAKE, LEROY DICKSON, CARL HARRY KNOWLES
  • Publication number: 20010015380
    Abstract: A fully automated package identification and measuring system, in whic an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathamatical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathamatical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
    Type: Application
    Filed: September 21, 1998
    Publication date: August 23, 2001
    Inventors: TIMOTHY A. GOOD, ANDREW D. DEHENNIS, XIAOXUN ZHU, DAVID M. WILZ, GEORGE B. ROCKSTEIN, STEPHEN J. COLAVITO, ROBERT E. BLAKE, KA MAN AU, GEORGE KOLIS, CARL HARRY KNOWLES