Patents by Inventor Dean Kawaguchi

Dean Kawaguchi 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: 20070280155
    Abstract: Described is a device and method for optimizing communications in a wireless network. The device comprises a first wireless transceiver communicating using a first channel of a first frequency band, a second wireless transceiver communicating using a second channel of a second frequency band, and a processor selecting one of the first and second transceivers for transmission of a wireless signal to a further device as a function of destination data of the further device. The further device includes a third transceiver communicating using one of the first and second frequency bands.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 6, 2007
    Inventors: Vinh-Phuong Tra Le, Dean Kawaguchi
  • Publication number: 20070254670
    Abstract: Described is a system and method for optimizing throughput in a wireless network. The method comprises providing a predetermined wireless bandwidth on a wireless communication channel to a plurality of wireless nodes. A bandwidth used by a selected wireless node is analyzed. When the bandwidth is outside of a predetermined threshold range, a predetermined action is executed to adjust the bandwidth utilized by the selected wireless node.
    Type: Application
    Filed: May 1, 2006
    Publication date: November 1, 2007
    Inventors: Dean Kawaguchi, Vinh-Phuong Le
  • Patent number: 7250906
    Abstract: The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator circuits in parallel with signal decoders to time-stamp communication sequences. Cellular wireless networks may be frequency-multiplexed to increase spatial time-stamping density. Tags may be attached to passive assets to provide location identification information to network devices. Locations of assets broadcasting standard 802.11 radio frequency structures may be identified. Noise inherent in correlating a communication sequence may be reduced by using a selected correlation function.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: July 31, 2007
    Assignee: Symbol Technologies, Inc.
    Inventors: David P. Goren, Dean Kawaguchi, Raj Bridgelall, Benjamin J. Bekritsky, Chris Zegelin
  • Publication number: 20070121558
    Abstract: Described is a system comprising a first wireless device and a second wireless device. The first device has access to a packet routing table which includes data indicative of a packet transmission path in a wireless mesh communications network. The second wireless device is communicatively coupled to the first device and has access to the routing table. Upon receipt of a packet by the first device which is addressed to the second device, the first device determines, as a function of at least one of (i) the routing table and (ii) a first identifier of the second device, a second identifier of a third wireless device to receive the packet directly from the first device. At least one of the first, second and third devices updates the routing table.
    Type: Application
    Filed: November 30, 2005
    Publication date: May 31, 2007
    Inventors: Robert Beach, Dean Kawaguchi, Ramesh Sekhar
  • Publication number: 20070104157
    Abstract: Described is a method for locationing in a communications network. A wireless access point receives a signal corresponding to activity of a plurality of wireless devices on a predetermined bandwidth. The signal is processed to generate a plurality of subsignals using a predetermined signal processing procedure. An energy level of a particular subsignal of the plurality of subsignals is determined. A location of a corresponding wireless device is determined as a function of the energy level and a predetermined locationing procedure.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 10, 2007
    Inventors: Dean Kawaguchi, Vinh-Phuong Le
  • Publication number: 20070097912
    Abstract: Described is a system and method for managing multi-channel communication. The system includes a plurality of wireless devices communicating by utilizing at least one wireless communications channels. A network management arrangement controls allocation of the wireless communications channels and divides the wireless channels into a first channel pool and a second channel pool. The second pool including at least one channel. The arrangement utilizes the second pool only upon detection of a predetermined condition.
    Type: Application
    Filed: November 3, 2005
    Publication date: May 3, 2007
    Inventors: Dean Kawaguchi, Vinh-Phuong Tra Le
  • Publication number: 20060160545
    Abstract: The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator circuits in parallel with signal decoders to time-stamp communication sequences. Cellular wireless networks may be frequency-multiplexed to increase spatial time-stamping density. Tags may be attached to passive assets to provide location identification information to network devices. Locations of assets broadcasting standard 802.11 radio frequency structures may be identified. Noise inherent in correlating a communication sequence may be reduced by using a selected correlation function.
    Type: Application
    Filed: February 3, 2006
    Publication date: July 20, 2006
    Inventors: David Goren, Dean Kawaguchi, Raj Bridgelall, Benjamin Bekritsky, Chris Zegelin
  • Publication number: 20060141932
    Abstract: Described is a system which includes a wireless arrangement and a mobile unit. The mobile unit includes a wireless transducer and a data acquisition arrangement (“DAA”). The DAA obtains identification data from a marker which is situated on a permanent fixture at a predetermined location. The wireless transducer sends a transmission to the wireless arrangement. The transmission includes the identification data and wireless transmission data. The wireless arrangement analyzes the identification data to determine the predetermined location. The wireless arrangement determines wireless coverage data at the location as a function of the transmission data.
    Type: Application
    Filed: May 31, 2005
    Publication date: June 29, 2006
    Inventors: Loren Lawrence, Barry Ridings, Dean Kawaguchi, Ron Zancola, Paul Cowan
  • Publication number: 20060143090
    Abstract: Described is a system which includes a wireless arrangement and a mobile unit. The mobile unit may include a wireless transducer and a data acquisition arrangement (“DAA”) which obtains identification data from an item located at a predetermined location. The wireless transducer sends a transmission to the wireless arrangement which includes the identification data and wireless transmission data. The wireless arrangement analyzes the identification data to determine the predetermined location and wireless coverage data at the location as a function of the transmission data.
    Type: Application
    Filed: December 27, 2004
    Publication date: June 29, 2006
    Inventors: Barry Ridings, Loren Lawrence, Dean Kawaguchi, Ron Zancola, Paul Cowan
  • Publication number: 20060125690
    Abstract: The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator circuits in parallel with signal decoders to time-stamp communication sequences. Cellular wireless networks may be frequency-multiplexed to increase spatial time-stamping density. Tags may be attached to passive assets to provide location identification information to network devices. Locations of assets broadcasting standard 802.11 radio frequency structures may be identified. Noise inherent in correlating a communication sequence may be reduced by using a selected correlation function.
    Type: Application
    Filed: February 3, 2006
    Publication date: June 15, 2006
    Inventors: David Goren, Dean Kawaguchi, Raj Bridgelall, Benjamin Bekritsky, Chris Zegelin
  • Patent number: 7030811
    Abstract: The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator circuits in parallel with signal decoders to time-stamp communication sequences. Cellular wireless networks may be frequency-multiplexed to increase spatial time-stamping density. Tags may be attached to passive assets to provide location identification information to network devices. Locations of assets broadcasting standard 802.11 radio frequency structures may be identified. Noise inherent in correlating a communication sequence may be reduced by using a selected correlation function.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: April 18, 2006
    Assignee: Symbol Technologies, Inc.
    Inventors: David P. Goren, Dean Kawaguchi, Raj Bridgelall, Benjamin J. Bekritsky, Chris Zegelin
  • Patent number: 6873835
    Abstract: A method of selecting between first and second antennas in a quadrature amplitude modulation receiver having in-phase (I) and quadrature (Q) signal channels for demodulating signals received by the antennas, comprising the steps of imultaneously connecting the first antenna to the I channel to obtain a first output signal having a first amplitude, and the second antenna to the Q channel to obtain a second output signal having a second amplitude; measuring the first and second amplitude to obtain a greater amplitude for one on the antennas; and switching to said of the antennas having the greater amplitude for demodulating the received signals.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: March 29, 2005
    Assignee: Symbol Technologies, Inc.
    Inventor: Dean Kawaguchi
  • Patent number: 6808396
    Abstract: A method and system for connecting a user identification module to a wireless host device are described. The user identification module is inserted in an accessory card that fits in the host device, and includes a radio transreceiver to connect to a wireless network. When the accessory card is placed in the host device, a mating surface of the host device blocks removal of the user identification module from the accessory card. The accessory card may be connected to the host device by inserting in a slot of the host device an edge of the accessory card from which extends an interface.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: October 26, 2004
    Assignee: Symbol Technologies, Inc.
    Inventors: Dean Kawaguchi, Nhan Tri Nguyen, Mark Unruh, Patrick Wallace
  • Publication number: 20030220022
    Abstract: A method and system for connecting a user identification module to a wireless host device are described. The user identification module is inserted in an accessory card that fits in the host device, and includes a radio transreceiver to connect to a wireless network. When the accessory card is placed in the host device, a mating surface of the host device blocks removal of the user identification module from the accessory card.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Inventors: Dean Kawaguchi, Nhan Tri Nguyen, Mark Unruh, Patrick Wallace
  • Patent number: 6580700
    Abstract: A communications network comprising a wireless local area network includes a plurality of access points connected to a host computer and each other, and a plurality of mobile units with each mobile unit being arranged for association with at least one access point. The mobile units are arranged to periodically scan for and identify the most eligible access point for association at the highest data rate on the basis of a performance criteria at the current data rate.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: June 17, 2003
    Assignee: Symbol Technologies, Inc.
    Inventors: Patrick Pinard, Dean Kawaguchi
  • Publication number: 20030050033
    Abstract: A method of selecting between first and second antennas in a quadrature amplitude modulation receiver having in-phase (I) and quadrature (Q) signal channels for demodulating signals received by the antennas, comprising the steps of imultaneously connecting the first antenna to the I channel to obtain a first output signal having a first amplitude, and the second antenna to the Q channel to obtain a second output signal having a second amplitude; measuring the first and second amplitude to obtain a greater amplitude for one on the antennas; and switching to said of the antennas having the greater amplitude for demodulating the received signals.
    Type: Application
    Filed: January 3, 2002
    Publication date: March 13, 2003
    Inventor: Dean Kawaguchi
  • Publication number: 20020097182
    Abstract: The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator circuits in parallel with signal decoders to time-stamp communication sequences. Cellular wireless networks may be frequency-multiplexed to increase spatial time-stamping density. Tags may be attached to passive assets to provide location identification information to network devices. Locations of assets broadcasting standard 802.11 radio frequency structures may be identified. Noise inherent in correlating a communication sequence may be reduced by using a selected correlation function.
    Type: Application
    Filed: November 14, 2001
    Publication date: July 25, 2002
    Inventors: David P. Goren, Dean Kawaguchi, Raj Bridgelall, Benjamin J. Bekritsky, Chris Zegelin