Patents Assigned to Symbol Technologies
  • Rugged design for hand held mobile terminals
    Patent number: 7522889
    Abstract: Systems and methods for a rugged hand held mobile terminal design are provided. The mobile terminal design includes a monocoque enclosure for housing electronic components. The electronic components are mounted on a rail system, which is positioned within an interior portion of the enclosure through an open end of the enclosure. The mobile terminal design also includes a display bezel. The display bezel and the rail system have mating parts for securing the assembly together.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: April 21, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Thomas Wulff, Robert A. Spano, Azer Ilkhanov, Mitchell Maiman
  • Image projection at different image planes
    Patent number: 7521279
    Abstract: An image projection module within a housing is operative for causing selected pixels in a raster pattern to be illuminated to produce an image at different image planes of VGA quality. A movable component on the housing causes the image to be formed at a selected image plane.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: April 21, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Alistair R. Hamilton, Ron Goldman, Shane MacGregor, Emmanuel Tanghal
  • Methods, Systems and Apparatus for Radio Frequency Identification (RFID) System Configuration Management
    Publication number: 20090096585
    Abstract: Methods, systems and apparatus for controlling initiation of configuration of RFID readers using initiate-staging control information, include interrogating a reading zone of a reader for initiate-staging control information, and selectively setting the reader in an initiate-staging state in accordance with initiate-staging control information detected by the interrogation. The interrogation may include interrogating at least one RFID tag located in the reading zone of the reader for initiate-staging control information stored therein. The interrogation may include interrogating a reading zone of the reader for initiate-staging control information only during a predetermined period of time TISC, e.g., after power-up of the reader.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 16, 2009
    Applicant: Symbol Technologies, Inc.
    Inventors: Allan Perry Herrod, Steven Lee Zimmerman, Paul Alexander Cowan
  • Imaging Bar Code Reader with Single Prism Focus Adjustment
    Publication number: 20090095815
    Abstract: The disclosed bar code reader includes an auto-focusing component for rapidly producing in focus images. An imaging system makes use of an aiming pattern that impinges upon the coded indicia of a target. The imaging system includes a light monitoring pixel array and a focusing lens that is fixed with respect to the pixel array for transmitting an image of the target object onto the pixel array. The imaging system also includes a moveable prism mounted for movement along a path of travel to transmit light passing through the focusing lens onto the pixel array. A drive motor moves the prism relative the lens to adjust a focus of an image of the object formed at the pixel array.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 16, 2009
    Applicant: Symbol Technologies, Inc.
    Inventor: Duanfeng He
  • Method for optimizing the design and implementation of RFID tags
    Patent number: 7516057
    Abstract: A method is provided for optimizing the design parameters of a RFID tag for use with a RFID reader in a RFID system. In the method, a desired frequency band that the RFID tag will operate in is chosen. Additionally, a maximum acceptable cost for the RFID tag, a minimum acceptable data range for the RFID tag and a minimum operating voltage for the RFID tag are chosen. For a given cost, an optimal data rate is calculated by varying a carrier modulation period of an interrogation signal generated by the RFID reader and antenna capacitance of the RFID tag. Next, an optimal range for a given operating voltage is calculated using the optimal data rate.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: April 7, 2009
    Assignee: Symbol Technologies, Inc.
    Inventor: Raj Bridgelall
  • Terminal with optical reader for locating products in a retail establishment
    Patent number: 7515914
    Abstract: A product location information retrieval system for use by a customer in a retail establishment including a computer terminal with an optical reader arranged to receive a data input query from the customer using the terminal and relating to a product, and a display in the terminal for displaying an image of a product to be accessed by the user.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: April 7, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Allan Herrod, John Klein, Sarosh Vesuna, Simon Bard
  • Apparatus and methods for optical representations of radio frequency identification tag information
    Patent number: 7513436
    Abstract: Methods, systems, and apparatuses for reconstitution of data for failed radio frequency identification (RFID) tags are described. The tag's information is segmented, optionally compressed, and encoded into a plurality of optical representations. Alternatively, or in addition, a portion or all of the tag's information is stored in a non-optical format. Upon failure of a tag read for any reason (e.g., tag failure, reader failure, operator error, environmental reasons, etc.), the data is reconstituted from the optical representations. Alternatively, or in addition, the reconstitution includes incorporating the information stored in a non-optical format.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: April 7, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Frederick Schuessler, Anne Schuessler
  • Compact scan engine
    Patent number: 7514702
    Abstract: A scan engine (15) includes illumination sources (48, 50) for projecting a light beam (40) upon a target object, a focusing lens (44) that receives a reflected light (34) of the target object and focuses a reflected image (35) as it passes through the focusing lens (44) along an optical axis (A-A), and a linear sensor (46) that receives the reflected image (35) from the focusing lens (44). The linear sensor (46) provides a signal (59) representing the reflected image (34). A circuit board (16) is integrally connected to the illumination sources (48, 50) and the linear sensor (46).
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: April 7, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Edward D. Barkan, Mark Drzymala
  • Method, system and apparatus for creating an active client list to support layer 3 roaming in wireless local area networks (WLANS)
    Patent number: 7515573
    Abstract: Techniques are provided for creating an active client list that can be distributed to a plurality of wireless switches. The wireless switches are located in a wireless local area network comprising a registration server, a plurality of active clients, and the plurality of wireless switches. Registration information associated with each of the active clients is communicated to the wireless switches that support those active clients. The registration information associated with each of the active clients from the wireless switches is communicated over an IP tunnel to the registration server. An active client list can then be created using the registration information for each active client. The active client list comprises a record for each active client in the wireless local area network.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: April 7, 2009
    Assignee: Symbol Technologies, Inc.
    Inventor: Zeljko Bajic
  • Method and apparatus for controllably modulating a laser in a laser projection display
    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
  • Method and apparatus for reading indicia
    Publication number: 20090084849
    Abstract: A method and apparatus is provided for reading indicia comprising a programmable scanning system (10) capable of reading a first object (18) scanned by the apparatus. The first object (18) initiates a program (24) internal to the apparatus providing a verb configuration indicating the type of programming actions to be taken by the apparatus. The programmable scanning system (10) is capable of reading a second object (26) scanned by the apparatus. The second object is decoded by internal circuitry of the scanning system (10) to provide a symbology type. The program (24) is selectively formatted by the first object (18) to read or not read the verb configuration of the symbology type of the second object (20) in target objects to be read.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Duanfeng He, Robert James Pang
  • METHODS AND APPARATUS FOR LOCATING AN RFID READER USING RFID TAGS
    Publication number: 20090085741
    Abstract: Methods and systems are provided for determining the location of an RFID reader within an environment having a plurality of RFID tags located therein. One method includes activating a tag via an RFID reader and receiving data from an RFID tag. The method also includes transmitting the data from the reader to an access port and determining the location of the reader based on the data. A system includes an RFID tag configured to transmit data when activated by an RFID reader. Furthermore, the system includes an access port configured to receive the data from the reader and a module configured to receive the data and determine the location of the reader based on the data. One RFID reader includes means for activating an RFID tag including data identifying a location of the tag, means for receiving the data, and means for transmitting the data to an access port.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 2, 2009
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Ranjith RAVI, Saurabh BHARGAVA, Shilpa MOGHE, Ajay MALIK
  • RFID BASED NETWORK ADMISSION CONTROL
    Publication number: 20090085744
    Abstract: A system for controlling access to a network includes a wireless switch configured for radio frequency communication with a mobile unit associated with a radio frequency identification tag. The wireless switch is adapted for determining if a radio frequency identification tag is located within a first area, and enabling the mobile unit to access the network according to a first scheme if the mobile unit is located within the first area.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: John SELLIN, Alex BAHEL, Tajinder MAAN, Ajay MALIK
  • METHODS AND APPARATUS FOR COMMUNICATING AN INTERFERENCE QUOTIENT TO IMPROVE PREEMPTIVE ROAMING
    Publication number: 20090088166
    Abstract: Methods and systems are provided for improved preemptive roaming. A network switching device includes an on-board locationing engine configured to determine the location of a mobile unit in an environment then compute a first interference quotient for the mobile unit and a first access port and a second interference quotient for the mobile unit and a second access port. The first and second interference quotients are based at least in part on the location of the mobile unit. The network switch communicates the first interference quotient and the second interference quotient to the mobile unit, which then associates with the AP having the most desirable interference quotient. The systems and methods are applicable, for example, to networks operating in accordance with 802.11, RFID, WiMax, WAN, Bluetooth, Zigbee, UWB, and the like.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventor: Ajay MALIK
  • Imaging-Based Bar Code Reader Utilizing Modified Rolling Shutter Operation
    Publication number: 20090084847
    Abstract: An imaging system for use in an bar code reader for imaging a target bar code. The imaging system includes a 2D sensor array generating a series of image frames and The sensor array can be selectively operated in a rolling shutter mode of operation or a pseudo global shutter mode of operation. The imaging system further includes an imaging lens assembly to focus light from the field of view onto the sensor array and an image analysis system for analyzing the series of image frames generated by the sensor array for image brightness and, based on image brightness, operating the sensor array in a selected one of the rolling shutter mode of operation and the pseudo-global shutter mode of operation.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 2, 2009
    Applicant: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Bradley S. Carlson
  • Multiple Camera Imaging-Based Bar Code Reader
    Publication number: 20090084854
    Abstract: A multicamera imaging-based bar code reader for imaging a target bar code on a target object features: a housing supporting a plurality of transparent windows and defining an interior region, a target object being presented to the plurality of windows for imaging a target bar code; an imaging system including a plurality of camera assemblies coupled to an image processing system, each camera assembly of the plurality of camera assemblies being positioned within the housing interior position. Each camera assembly includes a sensor array and an imaging lens assembly for focusing a field of view of the camera assembly onto the sensor array and wherein the sensor array is read out at a predetermined frame rate. The predetermined frame rate of at least one camera assembly is less than the predetermined frame rates of the other camera assemblies.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 2, 2009
    Applicant: Symbol Technologies, Inc.
    Inventors: Bradley S. Carlson, Eugene Joseph
  • METHODS AND SYSTEMS FOR CONTROLLING OPERATIONS OF A MOBILE RADIO FREQUENCY READER BASED ON ITS LOCATION
    Publication number: 20090085743
    Abstract: Methods and systems are provided for controlling RF reader operations based the location of the RF reader. One method includes determining that the RF reader is located within a zone associated with an access level and enabling or disabling the RF reader based on the access level. A system includes multiple access ports (APs) defining multiple zones including an access level for the RF reader. The system also includes a switch configured to determine a present zone of the mobile RF reader and enabling the RF reader based on the access level of the present zone. Another system includes means for receiving a signal from an access port and means for determining a location of the RF reader based on the signal, the location associated with an access level. The system also includes means for enabling or disabling the RF reader based on the access level.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Ranjith Ravi, Saurabh Bhargava, Shilpa Moghe, Ajay Malik
  • Color image projection system and method
    Patent number: 7511771
    Abstract: An image projection system projects an image on a projection screen having phosphor particles for converting incident violet light into green light which, together with red and blue light, creates the image in full color. The phosphor particles are bound in a binding material whose index of refraction matches the index of refraction of the phosphor particles to reduce back scattering of light.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: March 31, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Miklos Stern, Dmitriy Yavid
  • System and method for mobile biometric authentication
    Patent number: 7512254
    Abstract: Described is a method and system for authenticating identity of a person using a portable device. The portable device may includes an imager, an image processing unit and a processor. The image processing unit reads encoded data in a first image from an imager of the device. The image processing unit extracts a portion of a second image from the imager to generate extracted portion data. The extracted portion of the second image corresponds to a portion of a person whose identity is to be authenticated. Stored biometric data for a person is located based on the data read from the first image. The processor compares the extracted portion data of the second image to the stored biometric data for a person.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: March 31, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Richard M. Vollkommer, Bruce A. Willins, Brad Carlson, Askold Strat
  • Methods and apparatus for antenna failover in an RFID system with multi-antenna zones
    Patent number: 7511620
    Abstract: An RFID system includes a central RF network controller and a failover antenna within a read point zone that spans multiple antennas and RFID readers. The system includes a first RFID antenna configured to read RF tag data within a first read point, a second RFID antenna configured to read the RF tag data within a second read point, and a failover RFID antenna. A controller communicatively coupled to the failover RFID antenna, the first RFID antenna, and the second RFID antenna is configured to group the first, second, and failover RFID antennas in a read point zone and to receive RF tag data from the first, second, and failover RFID antennas and assign the tag data to the read point zone. The controller is further configured to receive a failure notification associated with failure of one of the first and second RFID antennas and activate the failover RFID antenna upon receipt of the failure notification.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: March 31, 2009
    Assignee: Symbol Technologies, Inc.
    Inventor: Ajay Malik