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).
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Patent number: 9756508Abstract: 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: GrantFiled: June 9, 2015Date of Patent: September 5, 2017Assignee: Xirrus, Inc.Inventors: Alan Jeffrey Hand, James Kirk Mathews
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Publication number: 20160127917Abstract: 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: ApplicationFiled: June 9, 2015Publication date: May 5, 2016Inventors: ALAN JEFFREY HAND, JAMES KIRK MATHEWS
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Patent number: 9055450Abstract: 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: GrantFiled: September 23, 2011Date of Patent: June 9, 2015Assignee: XIRRUS, INC.Inventors: Alan Jeffrey Hand, James Kirk Mathews
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Publication number: 20150098407Abstract: 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: ApplicationFiled: July 29, 2014Publication date: April 9, 2015Inventors: Dirk Ion Gates, James Kirk Mathews
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Patent number: 9001764Abstract: 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: GrantFiled: December 31, 2012Date of Patent: April 7, 2015Assignee: Xirrus, Inc.Inventors: Dirk Ion Gates, James Kirk Mathews
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Patent number: 8934416Abstract: 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: GrantFiled: March 9, 2006Date of Patent: January 13, 2015Assignee: Xirrus, Inc.Inventors: Dirk Ion Gates, James Kirk Mathews
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Patent number: 8798069Abstract: 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: GrantFiled: January 2, 2013Date of Patent: August 5, 2014Assignee: Xirrus, Inc.Inventors: Dirk Ion Gates, James Kirk Mathews
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Publication number: 20140010098Abstract: 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: ApplicationFiled: December 31, 2012Publication date: January 9, 2014Applicant: Xirrus, Inc.Inventors: Dirk Ion Gates, James Kirk Mathews
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Publication number: 20130343210Abstract: 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: ApplicationFiled: January 2, 2013Publication date: December 26, 2013Applicant: Xirrus, Inc.Inventors: Dirk Ion Gates, James Kirk Mathews
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Publication number: 20130079027Abstract: 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: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: Xirrus, Inc.Inventors: Alan Jeffrey Hand, James Kirk Mathews
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Patent number: 8299978Abstract: 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: GrantFiled: March 9, 2006Date of Patent: October 30, 2012Assignee: Xirrus, Inc.Inventors: Dirk Ion Gates, James Kirk Mathews
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Publication number: 20090028098Abstract: 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: ApplicationFiled: March 9, 2006Publication date: January 29, 2009Inventors: Dirk Ion Gates, James Kirk Mathews
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Patent number: 4039928Abstract: 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: GrantFiled: July 19, 1976Date of Patent: August 2, 1977Assignee: Pertron Controls CorporationInventors: Russell Noftsker, James Kirk Mathews