Patents by Inventor David Shi

David Shi 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: 20090109534
    Abstract: A system having a light source generating a light beam, a collimating lens collimating the light beam into a collimated light beam and a pattern generating element comprising a diffractive optical element portion and a refractive optical element portion, the pattern generating element creating a target pattern from the collimated light beam incident on the pattern generating element.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Inventors: Vladimir Gurevich, David Shi, Chinh Tan, Heng Zhang
  • Publication number: 20080167082
    Abstract: Described are an incorporated indicating arrangement for a mobile device and related methods. The mobile device comprises a housing and a processor situated in the housing. The mobile device further comprises a display arrangement disposed at least partially on a periphery of the housing. The display arrangement performs at least one of displaying first data to a user and receiving second data from the user. The display arrangement further provides an indication to the user, the indication being determined by the processor as a function of one of a functionality of the mobile device, a state of the functionality, preset configurations, and programmed configurations.
    Type: Application
    Filed: March 16, 2007
    Publication date: July 10, 2008
    Inventors: Vladimir Gurevich, David Shi, Heng Zhang
  • Publication number: 20070057069
    Abstract: A power pack with human interface devices that includes a power pack housing, which is detachably interfaced to a portable device. The power pack includes a power source internal to the housing for providing power, a light source internal to the housing for producing a light signal associated with a status, which light signal is viewable external to the housing, and an audio source internal to the housing for producing an audio signal associated with the status. The power pack interfaces electrically to the portable device to provide power thereto, and receive therefrom control signals associated with the status, which control signals activate at least one of the light source and audio source according to the status.
    Type: Application
    Filed: November 6, 2006
    Publication date: March 15, 2007
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Jeff Terlizzi, Alex Breytman, Jorg Schlieffers, Kevin Cordes, Jean Tu, Jay White, Chin-Hung Jwo, David Shi
  • Publication number: 20070057162
    Abstract: Heavy metals such as cadmium are not employed in optical bandpass filters employed in electro-optical readers to comply with governmental regulations concerning endangering the environment.
    Type: Application
    Filed: September 13, 2005
    Publication date: March 15, 2007
    Inventors: Edward Barkan, David Shi, Vladimir Gurevich
  • Publication number: 20070034696
    Abstract: A system and method for reading an optical code is provided. The optical code reader system includes a dual aim/illumination assembly including a single light source generating: a) light having a first intensity for providing an aim pattern visible to a user for aiming the aim pattern at a target during an aim period of a scan cycle having at least an aim period and an exposure period; and b) light having a second intensity greater than the first intensity for providing illumination during the exposure period of the scan cycle. An imager module having an array of photo sensors senses incident light and generating image signals corresponding to the sensing during the exposure period.
    Type: Application
    Filed: August 11, 2005
    Publication date: February 15, 2007
    Inventors: Edward Barkan, David Shi, Mehul Patel
  • Publication number: 20060266840
    Abstract: A bar code reader indicator feature gives visible indication that a bar code function has been performed. The feature is integrally molded with the exit window to simplify the design and reduce cost. The feature can diffuse light from an existing indicator light within the reader or the scanning light beam can be directed to impinge upon an area of the exit window not normally in the beam path when the function has been performed to illuminate the feature.
    Type: Application
    Filed: May 31, 2005
    Publication date: November 30, 2006
    Applicant: Symbol Technologies, Inc.
    Inventors: Igor Vinogradov, Vladimir Gurevich, David Shi
  • Publication number: 20060144944
    Abstract: The combination of a rooftop optical element and a soft edge aperture stop, as well as the introduction of a negative spherical aberration in a positive focusing lens, improve working distance and depth of focus in both moving beam and imaging readers for electro-optically reading indicia such as bar code symbols, especially for close-in symbols, and moreover tend to reduce undesirable light intensity modulation in the beam profile thereby improving reader performance.
    Type: Application
    Filed: March 6, 2006
    Publication date: July 6, 2006
    Inventors: Igor Vinogradov, Vladimir Gurevich, David Shi, Dariusz Madej, Mehul Patel, Edward Barkan, Heng Zhang
  • Publication number: 20060016892
    Abstract: The combination of a rooftop optical element and a soft edge aperture stop, as well as the introduction of a negative spherical aberration in a positive focusing lens, improve working distance and depth of focus in both moving beam and imaging readers for electro-optically reading indicia such as bar code symbols, especially for close-in symbols, and moreover tend to reduce undesirable light intensity modulation in the beam profile thereby improving reader performance.
    Type: Application
    Filed: July 23, 2004
    Publication date: January 26, 2006
    Inventors: Igor Vinogradov, Vladimir Gurevich, David Shi, Dariusz Madej, Mehul Patel, Edward Barkan, Heng Zhang
  • Publication number: 20050284942
    Abstract: Different aiming light patterns are generated to enable an imaging reader to be pointed directly at a target by employing non-interferometric optical components that are fabricated by molding and machining techniques.
    Type: Application
    Filed: June 29, 2004
    Publication date: December 29, 2005
    Inventors: Vladimir Gurevich, Alexander Breytman, David Shi
  • Publication number: 20050199725
    Abstract: Working range is increased in an electro-optical reader or an imager for reading indicia by applying a voltage to a variable lens to change the shape of a liquid therein.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 15, 2005
    Inventors: Pierre Craen, David Shi, Vladimir Gurevich, Edward Barkan, Igor Vinogradov
  • Publication number: 20050023351
    Abstract: An imaging and illuminating engine for an optical code reader to illuminate and image remote target indicia, such as an optical code, is provided. The engine includes an image sensor for receiving reflected illumination from the remote indicia and an illumination assembly for providing illumination of the remote indicia. The illumination assembly is capable of providing a plurality of different outputs, such as light having different wavelengths. The illumination assembly can also be provided with a single illuminating device for providing one illumination output for illuminating substantially the entire field of view. A transmissive, optical element overlays the engine for preventing light generated by the illumination assembly from reflecting back towards the image sensor. The imaging engine is an integrated circuit package configured for easily interfacing within an optical code reader as a plug-and-play component.
    Type: Application
    Filed: August 1, 2003
    Publication date: February 3, 2005
    Inventors: Mehul Patel, David Shi, Thomas Bianculli, Chunyu Zhao
  • Publication number: 20050023352
    Abstract: An imaging and an illuminating engine is provided for an optical code reader to image and illuminate remote target indicia. The engine includes an image sensor for receiving reflected illumination from the remote indicia and at least two illumination assemblies for providing illumination of the remote indicia. Each illumination assembly is capable of providing a number of different outputs, such as light having different wavelengths or different output durations. A transmissive, optical element overlays the engine for preventing light generated by the at least two illumination assemblies from reflecting back towards the image sensor. The imaging engine is an integrated circuit package for easily inserted and interfacing within an optical code reader as a plug-and-play component.
    Type: Application
    Filed: August 29, 2003
    Publication date: February 3, 2005
    Inventors: Mehul Patel, David Shi, Thomas Bianculli, Chunyu Zhao