Patents by Inventor Duanfeng He

Duanfeng He 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).

  • Publication number: 20150034724
    Abstract: A selected target from a picklist having a plurality of targets is electro-optically read, by image capture, over a range of working distances, by capturing an image of the picklist in the range over an imaging field of view, by storing coordinates of a trajectory of an aiming light pattern in the imaging field of view over the range, by processing the captured image along the trajectory to find and identify a target, by determining whether the target covers the trajectory, and by determining that the target is the selected target when the target at least partially covers the trajectory.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventor: Duanfeng He
  • Publication number: 20150040001
    Abstract: A mobile device captures information from a document. The mobile device selects a template stored in a memory of the mobile device. The selected template describes data content of at least one document. The mobile device then captures an image of a document, determines that the image corresponds to one document described by the selected template by verifying that at least one first region in the image corresponds to a region of the document described by the selected template, identifies at least one region in the image that corresponds with a region in the document described by the selected template, and processes information in the identified region in the image. The mobile device then aggregates application specific information from the processed information and presents the aggregated application specific information to a user program operating on the mobile device.
    Type: Application
    Filed: August 2, 2013
    Publication date: February 5, 2015
    Applicant: Symbol Technologies, Inc.
    Inventors: Anu Kannan, Alan J. Epshteyn, Duanfeng He
  • Publication number: 20150040002
    Abstract: A mobile device captures information from a document. The mobile device selects a template stored in a memory of the mobile device. The selected template describes data content of at least one document. The mobile device then captures an image of a document, determines that the image corresponds to one document described by the selected template by verifying that at least one first region in the image corresponds to a region of the document described by the selected template, identifies at least one region in the image that corresponds with a region in the document described by the selected template, and processes information in the identified region in the image. The mobile device then aggregates application specific information from the processed information and presents the aggregated application specific information to a user program operating on the mobile device.
    Type: Application
    Filed: August 2, 2013
    Publication date: February 5, 2015
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Anu Kannan, Alan J. Epshteyn, Duanfeng He
  • Patent number: 8915442
    Abstract: An arrangement for, and a method of, enhancing performance of an imaging reader for imaging symbols to be read, include a solid-state imager supported by the reader and having an array of image sensors for capturing return light from a symbol as pixel data over a field of view, and a controller operatively connected to the imager, for mapping a virtual scan line in the field of view, for determining whether the virtual scan line extends entirely over the symbol, for remapping the virtual scan line as a remapped virtual scan line that extends entirely over the symbol upon determining that the virtual scan line extends partially over the symbol, and for decoding the pixel data that lies on the remapped virtual scan line.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: December 23, 2014
    Assignee: Symbol Technologies, Inc.
    Inventors: Joseph Cai, Duanfeng He, Dayou Wang, Michelle Wang
  • Patent number: 8740080
    Abstract: An imaging reader for, and a method of, imaging symbols of different symbologies and a receipt acknowledgment, include a solid-state imager having an array of image sensors for capturing return light from the symbols of different symbologies and the receipt acknowledgment over a field of view, and a controller operatively connected to the imager. The controller is automatically configured for detecting a symbol having a specific symbology, for decoding the symbol having the specific symbology, for processing the receipt acknowledgment only when the symbol having the specific symbology has been detected and decoded, and for decoding symbols having symbologies different from the specific symbology when the symbol having the specific symbology has not been detected.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: June 3, 2014
    Assignee: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Thomas Lackemann
  • Publication number: 20140097252
    Abstract: A method of imaging a target object with an imaging reader. The method includes the following: (1) detecting light from the target object through a lens arrangement with an image sensor to generate light-field data; (2) generating a stream of image data including image data representing an expected in-focus image of the target object, and (3) processing the expected in-focus image of the target object to decode a barcode on the target object. The image sensor includes an array of photosensitive elements and an array of microlenses that overlays the array of photosensitive elements located at a focus plane of the microlens.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 10, 2014
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Duanfeng He, Vladimir Gurevich, David P. Goren, Nong-Qiang Fan
  • Publication number: 20140059414
    Abstract: An arrangement for, and a method of, electro-optically reading forms, each form having a plurality of form fields arranged at locations relative to one another, by image capture, includes storing form templates, each template having a plurality of template fields arranged at locations relative to one another, and capturing images over a field of view. A form and a correct orientation of the form, whose image is being captured, are automatically identified by matching the locations of the form fields in the captured image of the form with the locations of the stored template fields. The form fields on the identified form in the correct orientation are thereupon processed.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 27, 2014
    Applicant: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Anu Kannan
  • Patent number: 8657198
    Abstract: A data capture terminal for, and a method of, processing one or more target data, such as symbols, arranged at spaced-apart locations on a target, employ an electro-optical reader for electro-optically reading the data on the target, and a controller for processing at least one of the data, and for determining whether the at least one data has been successfully processed. An interpretation engine customizes the controller with user-selected logic. The interpretation engine is operative, preferably after the at least one data has been successfully processed, to instruct the controller with logical conditions under which the other data on the target is to be processed.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: February 25, 2014
    Assignee: Symbol Technologies, Inc.
    Inventor: Duanfeng He
  • Publication number: 20140044356
    Abstract: An arrangement for, and a method of, electro-optically reading different types of targets by image capture, include an imaging assembly for capturing an image of a target over a field of view, and a controller for automatically distinguishing between the different types of targets, for decoding a symbol if the target being imaged is a symbol target, and for identifying and processing individual fields on a form if the target being imaged is a form target.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 13, 2014
    Applicant: Symbol Technologies, Inc.
    Inventor: Duanfeng He
  • Patent number: 8602308
    Abstract: A method of imaging a target object with an imaging reader. The method includes the following: (1) detecting light from the target object through a lens arrangement with an image sensor to generate light-field data; (2) generating a stream of image data including image data representing an expected in-focus image of the target object, and (3) processing the expected in-focus image of the target object to decode a barcode on the target object. The image sensor includes an array of photosensitive elements and an array of microlenses that overlays the array of photosensitive elements located at a focus plane of the microlens.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 10, 2013
    Assignee: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Vladimir P. Gurevich, David P. Goren, Nong-Qiang Fan
  • Patent number: 8579197
    Abstract: A solid-state imager is mounted at a point-of-transaction workstation for capturing images of one- and two-dimensional indicia and is operated at high speed to resist image blurring due to relative movement between the target and the imager. Dedicated hardware assistance and computation resources are allocated to decode multiple, continuous and simultaneous video streams from multiple imagers at the workstation.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: November 12, 2013
    Assignee: Symbol Technologies, Inc.
    Inventors: Mehul M Patel, Duanfeng He, Howard Shepard, Eugene Joseph, Edward Barkan
  • Publication number: 20130284809
    Abstract: An apparatus includes a diffusive plate that is substantially perpendicular to the optical axis of an imaging lens arrangement and covers a side face of a solid rectangular defining a volume space within which parts of a scan engine are deposited. The parts of the scan engine including at least the illumination light source, the imaging lens arrangement, an imaging sensor, and a controller for controlling both the illumination light source and the imaging sensor. The diffusive plate includes a first opening to allow light enter the imaging lens arrangement through the first opening. The area enclosed by the boundary of the diffusive plate substantially equal to the area of the side face of the solid rectangular.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 31, 2013
    Applicant: Symbol Technologies, Inc.
    Inventors: Eugene B. Joseph, Mark E. Drzymala, Duanfeng He
  • Publication number: 20130248602
    Abstract: An apparatus and method for imaging targets, such as electronic codes displayed on screens or direct part marking codes marked on workpieces, include an illumination system for illuminating a target with illumination light directed through a window of a housing, a solid-state, exposable imager looking at a field of view that extends through the window to the target, and operative for capturing return illumination light from the field of view as an image, and a controller for processing the image to attempt reading the target. The controller identifies the target within the image, determines a brightness level of a background region or a region of interest when the target cannot be read or identified, exposes the imager for an exposure time based on the brightness level, and reads the target with the imager exposed for the exposure time.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 26, 2013
    Applicant: Symbol Technologies, Inc.
    Inventors: Duanfeng HE, Eugene JOSEPH
  • Patent number: 8500024
    Abstract: A data capture device is described. The data capture device includes an imager simultaneously capturing a barcode and an image associated with the barcode. A memory is coupled to the imager for storing the barcode and the image. A processor is coupled to the memory for decoding the barcode and processing the image. A notification system notifies a user that the image is being processed prior to the processor completing the processing of the image.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: August 6, 2013
    Assignee: Symbol Technologies, Inc.
    Inventor: Duanfeng He
  • Publication number: 20130161399
    Abstract: A method of imaging a target object with an imaging reader. The method includes the following: (1) detecting light from the target object through a lens arrangement with an image sensor to generate light-field data; (2) generating a stream of image data including image data representing an expected in-focus image of the target object, and (3) processing the expected in-focus image of the target object to decode a barcode on the target object. The image sensor includes an array of photosensitive elements and an array of microlenses that overlays the array of photosensitive elements located at a focus plane of the microlens.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Duanfeng He, Vladimir Gurevich, David P. Goren, Nong-Qiang Fan
  • Patent number: 8430319
    Abstract: An imaging reader has a two-dimensional array of image sensors for capturing return light from a two-dimensional symbol over a field of view as pixel data to be stored in internal random access memory (RAM) of a controller even though the internal RAM has less storage bytes than the number of sensors. The controller determines a size and a location of the symbol in the field of view, maps and subdivides the symbol into a plurality of image capture zones based on the symbol size and location, sequentially captures the return light from each zone, sequentially stores the pixel data from each zone into the internal RAM, sequentially digitizes the stored pixel data from each zone as digitized data, and decodes the digitized data from all the zones.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: April 30, 2013
    Assignee: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Bradley Carlson, Anatoly A Kotlarsky
  • Publication number: 20130094695
    Abstract: Method and apparatus of detecting orientation of document using a barcode decoding. The method includes (1) capturing an image of the document with an imaging arrangement having a solid-state imager; (2) determining a presence of a barcode in the captured image of the document; (3) decoding the barcode; (4) determining an up-direction of the document as a function of an orientation of the barcode in the document; and (5) setting an orientation of the document in the captured image based upon the up-direction of the document. In one implementation, the barcode is configured with orientation data indicating the up-direction of the document.
    Type: Application
    Filed: October 13, 2011
    Publication date: April 18, 2013
    Applicant: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Adithya Krishnamurthy
  • Publication number: 20120248189
    Abstract: A data capture terminal for, and a method of, processing one or more target data, such as symbols, arranged at spaced-apart locations on a target, employ an electro-optical reader for electro-optically reading the data on the target, and a controller for processing at least one of the data, and for determining whether the at least one data has been successfully processed. An interpretation engine customizes the controller with user-selected logic. The interpretation engine is operative, preferably after the at least one data has been successfully processed, to instruct the controller with logical conditions under which the other data on the target is to be processed.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 4, 2012
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventor: Duanfeng HE
  • Publication number: 20120199657
    Abstract: An imaging reader has a two-dimensional array of image sensors for capturing return light from a two-dimensional symbol over a field of view as pixel data to be stored in internal random access memory (RAM) of a controller even though the internal RAM has less storage bytes than the number of sensors. The controller determines a size and a location of the symbol in the field of view, maps and subdivides the symbol into a plurality of image capture zones based on the symbol size and location, sequentially captures the return light from each zone, sequentially stores the pixel data from each zone into the internal RAM, sequentially digitizes the stored pixel data from each zone as digitized data, and decodes the digitized data from all the zones.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 9, 2012
    Applicant: Symbol Technologies, Inc.
    Inventors: Duanfeng HE, Bradley CARLSON, Anatoly A. KOTLARSKY
  • Patent number: 8210437
    Abstract: A data capture terminal for, and a method of, automatically capturing data from targets located within a range of working distances from the terminal, employ a controller for automatically controlling a set of focal parameters of an imaging assembly, for storing one of the focal parameters of the imaging assembly upon a successful data capture from a first target, and for automatically selecting a subset of the focal parameters determined from the stored focal parameter to capture data from a second target. The subset is smaller than the set of the focal parameters and corresponds to a restricted zone within the range of working distances to enhance data capture performance of the terminal.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: July 3, 2012
    Assignee: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Bradley Carlson