Patents by Inventor James Kirk Mathews

James Kirk Mathews 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).

  • Patent number: 9756508
    Abstract: A system for quantifying the shadow fading observed in a wireless environment having multiple wireless access points is also provided. A distance determination module is in signal communication with the wireless access points. The distance determination module determines a distance between a pair of the wireless access points based on location information that relates to the locations of the wireless access points at the wireless environment. A shadow fading determination module is also in signal communication with the wireless access points. The shadow fading determination module determines a shadow fading factor based on the distance between a pair of the wireless access points and based on RSS information received from one of the wireless access points in the pair of wireless access points.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 5, 2017
    Assignee: Xirrus, Inc.
    Inventors: Alan Jeffrey Hand, James Kirk Mathews
  • Publication number: 20160127917
    Abstract: A system for quantifying the shadow fading observed in a wireless environment having multiple wireless access points is also provided. A distance determination module is in signal communication with the wireless access points. The distance determination module determines a distance between a pair of the wireless access points based on location information that relates to the locations of the wireless access points at the wireless environment. A shadow fading determination module is also in signal communication with the wireless access points. The shadow fading determination module determines a shadow fading factor based on the distance between a pair of the wireless access points and based on RSS information received from one of the wireless access points in the pair of wireless access points.
    Type: Application
    Filed: June 9, 2015
    Publication date: May 5, 2016
    Inventors: ALAN JEFFREY HAND, JAMES KIRK MATHEWS
  • Patent number: 9055450
    Abstract: A system for quantifying the shadow fading observed in a wireless environment having multiple wireless access points is also provided. A distance determination module is in signal communication with the wireless access points. The distance determination module determines a distance between a pair of the wireless access points based on location information that relates to the locations of the wireless access points at the wireless environment. A shadow fading determination module is also in signal communication with the wireless access points. The shadow fading determination module determines a shadow fading factor based on the distance between a pair of the wireless access points and based on RSS information received from one of the wireless access points in the pair of wireless access points.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 9, 2015
    Assignee: XIRRUS, INC.
    Inventors: Alan Jeffrey Hand, James Kirk Mathews
  • Publication number: 20150098407
    Abstract: A channel allocation system for allocating channels in a frequency band to a plurality of radios in close proximity so as to minimize co-channel interference. One method for allocating channels involves initially tuning each of the plurality of radios to the same one of the plurality of channels. All of the radios then receive signals from whatever sources and a signal score is determined for each radio. The radios are then tuned to another one of the plurality of channels. The steps of receiving a signal and determining a signal score for each radio are repeated for each of the remaining channels until all channels have been used. The signal scores are then tested against a table of mapping schemes to determine maximum isolation.
    Type: Application
    Filed: July 29, 2014
    Publication date: April 9, 2015
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Patent number: 9001764
    Abstract: A channel allocation system for allocating channels in a frequency band to a plurality of radios in close proximity so as to minimize co-channel interference. One method for allocating channels involves initially tuning each of the plurality of radios to the same one of the plurality of channels. All of the radios then receive signals from whatever sources and a signal score is determined for each radio. The radios are then tuned to another one of the plurality of channels. The steps of receiving a signal and determining a signal score for each radio are repeated for each of the remaining channels until all channels have been used. The signal scores are then tested against a table of mapping schemes to determine maximum isolation.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: April 7, 2015
    Assignee: Xirrus, Inc.
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Patent number: 8934416
    Abstract: A channel allocation system for allocating channels in a frequency band to a plurality of radios in close proximity so as to minimize co-channel interference. One method for allocating channels involves initially tuning each of the plurality of radios to the same one of the plurality of channels. All of the radios then receive signals from whatever sources and a signal score is determined for each radio. The radios are then tuned to another one of the plurality of channels. The steps of receiving a signal and determining a signal score for each radio are repeated for each of the remaining channels until all channels have been used. The signal scores are then tested against a table of mapping schemes to determine maximum isolation.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: January 13, 2015
    Assignee: Xirrus, Inc.
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Patent number: 8798069
    Abstract: A channel allocation system for allocating channels in a frequency band to a plurality of radios in close proximity so as to minimize co-channel interference. One method for allocating channels involves initially tuning each of the plurality of radios to the same one of the plurality of channels. All of the radios then receive signals from whatever sources and a signal score is determined for each radio. The radios are then tuned to another one of the plurality of channels. The steps of receiving a signal and determining a signal score for each radio are repeated for each of the remaining channels until all channels have been used. The signal scores are then tested against a table of mapping schemes to determine maximum isolation.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: August 5, 2014
    Assignee: Xirrus, Inc.
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Publication number: 20140010098
    Abstract: A channel allocation system for allocating channels in a frequency band to a plurality of radios in close proximity so as to minimize co-channel interference. One method for allocating channels involves initially tuning each of the plurality of radios to the same one of the plurality of channels. All of the radios then receive signals from whatever sources and a signal score is determined for each radio. The radios are then tuned to another one of the plurality of channels. The steps of receiving a signal and determining a signal score for each radio are repeated for each of the remaining channels until all channels have been used. The signal scores are then tested against a table of mapping schemes to determine maximum isolation.
    Type: Application
    Filed: December 31, 2012
    Publication date: January 9, 2014
    Applicant: Xirrus, Inc.
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Publication number: 20130343210
    Abstract: A channel allocation system for allocating channels in a frequency band to a plurality of radios in close proximity so as to minimize co-channel interference. One method for allocating channels involves initially tuning each of the plurality of radios to the same one of the plurality of channels. All of the radios then receive signals from whatever sources and a signal score is determined for each radio. The radios are then tuned to another one of the plurality of channels. The steps of receiving a signal and determining a signal score for each radio are repeated for each of the remaining channels until all channels have been used. The signal scores are then tested against a table of mapping schemes to determine maximum isolation.
    Type: Application
    Filed: January 2, 2013
    Publication date: December 26, 2013
    Applicant: Xirrus, Inc.
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Publication number: 20130079027
    Abstract: A system for quantifying the shadow fading observed in a wireless environment having multiple wireless access points is also provided. A distance determination module is in signal communication with the wireless access points. The distance determination module determines a distance between a pair of the wireless access points based on location information that relates to the locations of the wireless access points at the wireless environment. A shadow fading determination module is also in signal communication with the wireless access points. The shadow fading determination module determines a shadow fading factor based on the distance between a pair of the wireless access points and based on RSS information received from one of the wireless access points in the pair of wireless access points.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Xirrus, Inc.
    Inventors: Alan Jeffrey Hand, James Kirk Mathews
  • Patent number: 8299978
    Abstract: A wireless access point is provided for transmitting radio signals that has isolators positioned about the perimeter of the wireless access point dividing the perimeter of the wireless access point into segments and reflector plates positioned within each segment for directing the transmission of the radio signals within each segment.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: October 30, 2012
    Assignee: Xirrus, Inc.
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Publication number: 20090028098
    Abstract: A channel allocation system for allocating channels in a frequency band to a plurality of radios in close proximity so as to minimize co-channel interference. One method for allocating channels involves initially tuning each of the plurality of radios to the same one of the plurality of channels. All of the radios then receive signals from whatever sources and a signal score is determined for each radio. The radios are then tuned to another one of the plurality of channels. The steps of receiving a signal and determining a signal score for each radio are repeated for each of the remaining channels until all channels have been used. The signal scores are then tested against a table of mapping schemes to determine maximum isolation.
    Type: Application
    Filed: March 9, 2006
    Publication date: January 29, 2009
    Inventors: Dirk Ion Gates, James Kirk Mathews
  • Patent number: 4039928
    Abstract: An operating circuit for a semiconductor switch device of the type that passes electrical current from a source to an electrical load by forward biasing of the semiconductor's control terminal includes a resistance bridge network having in an arm thereof the control terminal to one main terminal circuit of the semiconductor switch, and a bias control for alternately applying forward bias and reverse bias to the control terminal through the bridge network, whereby a voltage is developed across the bridge output during the interval in which the control terminal is reverse biased that is representative of the junction temperature within the semiconductor. The temperature representative voltage is observed, monitored, and used for indication and control.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: August 2, 1977
    Assignee: Pertron Controls Corporation
    Inventors: Russell Noftsker, James Kirk Mathews