Patents by Inventor Paul Dvorkis

Paul Dvorkis 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: 20100147955
    Abstract: A laser scanner includes a laser, a variable focusing element, a scanner, a detector, and a controller that controls the scanner to sweep a laser beam over an aiming angle at an aiming rate to form an aiming line on a symbol during aiming, and over a reading angle at a reading rate to form a reading line on the symbol during reading that follows the aiming. The aiming angle is smaller than the reading angle. The aiming rate is higher than the reading rate. The aiming line is shorter than the reading line. The controller determines a depth of modulation of an analog signal generated during aiming, and controls the variable focusing element to focus the laser beam on the symbol during aiming when the depth of modulation is determined to be optimum. The controller also processes the analog signal to data indicative of the symbol during reading.
    Type: Application
    Filed: December 17, 2008
    Publication date: June 17, 2010
    Inventors: Paul Dvorkis, Edward Barkan, Mark Drzymala
  • Publication number: 20100102129
    Abstract: A multicamera imaging-based bar code reader 10 for imaging a target bar code 30 on a target object 32 features: a housing 20 supporting a plurality of transparent windows H, V and defining an interior region, an imaging system including a plurality of camera assemblies C1-C3 coupled to an image processing system, each camera assembly of the plurality of camera assemblies being positioned within the housing interior. Each camera assembly includes a sensor array. Light reflecting fold mirrors split light from a given camera assembly into portions that are directed out of the housing to different fields of view. Light bounces from a target in a camera field of view back along said light path to the image capture sensor array.
    Type: Application
    Filed: October 29, 2008
    Publication date: April 29, 2010
    Applicant: Symbol Technologies, Inc.
    Inventors: Mark Drzymala, Edward D. Barkan, Bradley S. Carlson, Paul Dvorkis
  • Patent number: 7513624
    Abstract: A laser projection device suitable for displaying full color images is disclosed. The LPD includes a variety of techniques for modulating laser beams produced by one or more lasers with image data to controllably produce the image using a modified raster scan.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: April 7, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Dmitriy Yavid, Paul Dvorkis, Ron Goldman, Joseph Katz, Narayan Nambudiri, Miklos Stern, Chinh Tan, Carl Wittenberg, Frederick F. Wood
  • Patent number: 7445339
    Abstract: A method and apparatus are provided to provide a laser projection display (LPD).
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: November 4, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Paul Dvorkis, Ron Goldman, Narayan Nambudiri, Carl Wittenberg, Chinh Tan, Miklos Stern, Dmitriy Yavid, Frederick F. Wood
  • Patent number: 7441902
    Abstract: A plurality of image projection modules is operative for causing selected pixels in overlapping raster patterns to be illuminated to produce a large size image of high resolution of VGA quality in monochrome or color. The selected pixels in an overlap region of the patterns are illuminated at a lesser intensity to provide uniform brightness over the image. Multiple single mode lasers, or a multimode laser with an aperture stop, are employed to increase laser output power. Speckle noise is reduced by controlling the optical transmission characteristic of a projection screen. Three-dimensional images are generated by moving the screen. Cross-coupling between drive and feedback mechanisms in image projection is reduced for better image quality.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: October 28, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Paul Dvorkis, Ron Goldman, Chinh Tan, Dmitriy Yavid, Frederick F. Wood
  • Patent number: 7425073
    Abstract: A method and apparatus are provided to controllably reduce power of a laser projection display (LPD). Light is scanned from a laser onto a viewing surface to produce an image thereon, and power used by the laser is reduced used while scanning at least a portion of the viewing surface.
    Type: Grant
    Filed: May 31, 2004
    Date of Patent: September 16, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Frederick F. Wood, Paul Dvorkis, Ron Goldman, Narayan Nambudiri, Miklos Stern, Chinh Tan, Carl Wittenberg, Dmitriy Yavid
  • Patent number: 7414621
    Abstract: A laser projection device (LPD) suitable for displaying color images is disclosed. The LPD is used to excite various photoluminescent materials located on a display screen so as to produce multi-color displays. Additionally, the screen may be movably mounted so as to reduce laser speckling.
    Type: Grant
    Filed: October 31, 2004
    Date of Patent: August 19, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Dmitriy Yavid, Paul Dvorkis, Ron Goldman, Joseph Katz, Narayan Nambudiri, Miklos Stern, Chinh Tan, Carl Wittenberg, Frederick F. Wood
  • Patent number: 7369584
    Abstract: A method and apparatus are provided for controlling the operation of a Laser Projection Display (LPD). Generally, the LPD is comprised of a laser, an optical system and a controller. The laser is adapted to emit a beam of laser light. The optical system is adapted to scan the beam of laser light on a display surface in a two-dimensional raster pattern. The controller is adapted to control the rate at which the laser beam is scanned to produce regions of varying resolution on the display surface. The controller is also adapted to present laser light onto the display surface within only selected portions of the two-dimensional raster scan pattern so that spaced apart image regions may be created.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: May 6, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Ron Goldman, Paul Dvorkis, Joseph Katz, Narayan Nambudiri, Miklos Stern, Chinh Tan, Carl Wittenberg, Frederick F. Wood, Dmitriy Yavid
  • Patent number: 7367682
    Abstract: A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: May 6, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Paul Dvorkis, Ron Goldman, Chinh Tan, Dmitriy Yavid, Miklos Stern, Carl Wittenberg, Frederick F. Wood, Askold Strat, Michael Slutsky, Narayan Nambudiri, Richard Rizza, Thomas Mazz, Lisa Fan
  • Patent number: 7367510
    Abstract: An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: May 6, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Yajun Li, Paul Dvorkis, Dmitriy Yavid, Frederick F. Wood, Miklos Stern, Edward Barkan, Narayan Nambudri
  • Patent number: 7357512
    Abstract: An image projection system projects an image on a projection screen having a phosphor for converting incident violet light into green light which, together with red and blue light, creates the image in full color. The screen includes an apertured mask having apertures filled with the phosphor, or a phosphor plate in contact with the mask and having lenslets extending through and past the apertures.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: April 15, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Chinh Tan, Paul Dvorkis, Miklos Stern, Frederick F. Wood
  • Publication number: 20080055557
    Abstract: A laser projection device suitable for displaying full color images is disclosed. The LPD includes a variety of techniques for modulating laser beams produced by one or more lasers with image data to controllably produce the image using a modified raster scan.
    Type: Application
    Filed: October 2, 2007
    Publication date: March 6, 2008
    Inventors: Dmitriy Yavid, Paul Dvorkis, Ron Goldman, Joseph Katz, Narayan Nambudiri, Miklos Stern, Chinh Tan, Carl Wittenberg, Frederick Wood
  • Patent number: 7325929
    Abstract: A laser projection device suitable for displaying full color images is disclosed. The LPD includes a variety of techniques for modulating laser beams produced by one or more lasers with image data to controllably produce the image using a modified raster scan.
    Type: Grant
    Filed: July 31, 2004
    Date of Patent: February 5, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Dmitriy Yavid, Paul Dvorkis, Ron Goldman, Joseph Katz, Narayan Nambudiri, Miklos Stern, Chinh Tan, Carl Wittenberg, Frederick F. Wood
  • Patent number: 7304619
    Abstract: A method and apparatus are provided to controllably compensate for distortions in an image produced by an LPD, where the distortion arises from the shape and/or angle of the viewing surface relative to the LPD. For example, the LPD can determine the angle of the viewing surface relative to the LPD and then adjust the horizontal and vertical scan mechanisms to return the image to its original configuration, such as rectangular.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: December 4, 2007
    Assignee: Symbol Technologies, Inc.
    Inventors: Carl Wittenberg, Paul Dvorkis, Ron Goldman, Joseph Katz, Narayan Nambudiri, Miklos Stern, Chinh Tan, Frederick F. Wood, Dmitriy Yavid
  • Patent number: 7302174
    Abstract: A method and apparatus are provided to capture images using a laser projection display (LPD). In a full color LPD camera, three lasers (red, blue, and green) are deployed to scan an image and receive reflected laser light therefrom. The reflected laser light may be analyzed and assembled into a picture. The LPD may also be used to display the picture, to operate as a viewfinder, to print the picture, to operate as a range finder, and the like.
    Type: Grant
    Filed: May 31, 2004
    Date of Patent: November 27, 2007
    Assignee: Symbol Technologies, Inc.
    Inventors: Chinh Tan, Paul Dvorkis, Ron Goldman, Narayan Nambudiri, Carl Wittenberg, Miklos Stern, Dmitriy Yavid, Frederick F. Wood
  • Patent number: 7273281
    Abstract: A method and apparatus are provided to compensate for variations in the alignment of a plurality of lasers 102, 104, 106. A controller 142 varies the time at which the lasers 102, 104, 106 are energized so that the laser light emitted therefrom is reflected from a scanning mirror 118 at varying times so that each of the beams of light is reflected along a substantially common path and delivered to a substantially common point.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: September 25, 2007
    Assignee: Symbol Technologies, Inc.
    Inventors: Miklos Stern, Paul Dvorkis, Narayan Nambudiri, Carl Wittenberg, Chinh Tan, Ron Goldman, Dmitriy Yavid, Frederick F. Wood
  • Publication number: 20070181688
    Abstract: An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.
    Type: Application
    Filed: November 6, 2006
    Publication date: August 9, 2007
    Inventors: Yajun Li, Paul Dvorkis, Dmitriy Yavid, Frederick Wood, Miklos Stern, Edward Barkan, Narayan Nambudri
  • Publication number: 20070097335
    Abstract: A method and apparatus are provided to provide a laser projection display (LPD).
    Type: Application
    Filed: October 18, 2006
    Publication date: May 3, 2007
    Inventors: Paul Dvorkis, Ron Goldman, Narayan Nambudiri, Carl Wittenberg, Chinh Tan, Miklos Stern, Dmitriy Yavid, Frederick Wood
  • Patent number: 7182263
    Abstract: An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: February 27, 2007
    Assignee: Symbol Technologies, Inc.
    Inventors: Yajun Li, Paul Dvorkis, Dmitriy Yavid, Frederick F. Wood, Miklos Stern, Edward Barkan, Narayan Nambudri
  • Patent number: RE40102
    Abstract: An optical scanner for reading indicia having areas of different light reflectivity, such as bar code symbols includes a stationary, multi-surface, fold mirror having a first surface of a first aplanar profile and a second surface of a second, different aplanar profile.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: February 26, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Paul Dvorkis, Edward Barkan, Boris Metlitski