Patents by Inventor Mark Hedley
Mark Hedley 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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Publication number: 20230292781Abstract: One or more complex lipids including gangliosides to achieve particular health benefits including maintaining or increasing cognitive development or maintaining or increasing growth in a foetal, infant or child subject.Type: ApplicationFiled: December 20, 2022Publication date: September 21, 2023Inventors: Steven Charles Hodgkinson, Christopher Paul McJarrow, Murray D. Mitchell, Angela Marie Rowan, Joanne Margaret Todd, Mark Hedley Vickers
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Patent number: 11061106Abstract: Disclosed is method of computing a round trip delay between a pair of nodes, the method comprising transmitting at least one beacon at a known transmit time from each of the nodes; measuring the times-of-arrival of the beacons at other of the nodes; and estimating a round trip delay between the nodes from the measured times-of-arrival and the transmit times; and correcting the round trip delay for either or both of a frequency offset between the nodes and relative motion between the nodes.Type: GrantFiled: June 27, 2019Date of Patent: July 13, 2021Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Mark Hedley, David Eric Humphrey
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Patent number: 10989531Abstract: Described herein is a method of setting-up a range-based tracking system utilising a tracking coordinate system that uses a plurality of spaced apart stationary nodes for tracking objects within a tracking environment. The method includes the step of transmitting signals between the stationary nodes to obtain range information between at least a subset of pairs of the nodes and determining coordinates for all of the stationary nodes in a node coordinate system using these range information. The method also includes the step of obtaining spatial information related to at least one of the nodes, the spatial information being indicative of one or more features or locations within the tracking environment and determining the location of all stationary nodes in the tracking coordinate system, wherein some or all of the coordinates of the stationary nodes are used for tracking objects in the tracking system.Type: GrantFiled: August 12, 2015Date of Patent: April 27, 2021Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Mark Hedley, Dan Popescu
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Publication number: 20210076698Abstract: One or more complex lipids including gangliosides can be used to achieve particular health benefits including maintaining or increasing cognitive development or maintaining or increasing growth in a foetal, infant or child subject.Type: ApplicationFiled: July 28, 2020Publication date: March 18, 2021Inventors: Steven Charles Hodgkinson, Christopher Paul McJarrow, Murray D. Mitchell, Angela Marie Rowan, Joanne Margaret Todd, Mark Hedley Vickers
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Publication number: 20190317184Abstract: Disclosed is method of computing a round trip delay between a pair of nodes, the method comprising transmitting at least one beacon at a known transmit time from each of the nodes; measuring the times-of-arrival of the beacons at other of the nodes; and estimating a round trip delay between the nodes from the measured times-of-arrival and the transmit times; and correcting the round trip delay for either or both of a frequency offset between the nodes and relative motion between the nodes.Type: ApplicationFiled: June 27, 2019Publication date: October 17, 2019Inventors: Mark Hedley, David Eric Humphrey
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Patent number: 10440678Abstract: A wireless tracking system comprises mobile devices and stationary devices at known locations. The system receives a first radio measurement indicative of a first propagation path length and receives sensor data indicative of the movement of the first mobile device. The sensor data is of a type different to the radio measurement. The system then determines a historical location of the first mobile device based on the first radio measurement and the sensor data and determines error data indicative of a difference between a historical radio measurement and the historical location and stores the error data associated with the historical location. The system can then receive a second radio measurement indicative of a second propagation path length of radio frequency radiation and determine an estimated location of the second mobile device based on the second radio measurement and the stored error data.Type: GrantFiled: March 10, 2017Date of Patent: October 8, 2019Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Mark Hedley, Shenghong Li
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Patent number: 10338194Abstract: Disclosed is method of computing a round trip delay between a pair of nodes, the method comprising transmitting at least one beacon at a known transmit time from each of the nodes; measuring the times-of-arrival of the beacons at other of the nodes; and estimating a round trip delay between the nodes from the measured times-of-arrival and the transmit times; and correcting the round trip delay for either or both of a frequency offset between the nodes and relative motion between the nodes.Type: GrantFiled: September 1, 2016Date of Patent: July 2, 2019Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: Mark Hedley, David Eric Humphrey
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Publication number: 20190104493Abstract: A wireless tracking system comprises mobile devices and stationary devices at known locations. The system receives a first radio measurement indicative of a first propagation path length and receives sensor data indicative of the movement of the first mobile device. The sensor data is of a type different to the radio measurement. The system then determines a historical location of the first mobile device based on the first radio measurement and the sensor data and determines error data indicative of a difference between a historical radio measurement and the historical location and stores the error data associated with the historical location. The system can then receive a second radio measurement indicative of a second propagation path length of radio frequency radiation and determine an estimated location of the second mobile device based on the second radio measurement and the stored error data.Type: ApplicationFiled: March 10, 2017Publication date: April 4, 2019Applicant: Commonwealth Scientific and Industrial Research OrganisationInventors: Mark Hedley, Shenghong Li
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Publication number: 20170311125Abstract: A method of setting up a tracking system of the type including a plurality of spaced-apart stationary nodes for tracking mobile nodes within a tracking environment, the method including using an independent localisation system to determine respective locations of at least a subset of the stationary nodes within the tracking environment.Type: ApplicationFiled: October 6, 2015Publication date: October 26, 2017Inventors: Mark HEDLEY, Paul FLICK
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Publication number: 20170276480Abstract: Described herein is a method of setting-up a range-based tracking system utilising a tracking coordinate system that uses a plurality of spaced apart stationary nodes for tracking objects within a tracking environment. The method includes the step of transmitting signals between the stationary nodes to obtain range information between at least a subset of pairs of the nodes and determining coordinates for all of the stationary nodes in a node coordinate system using these range information. The method also includes the step of obtaining spatial information related to at least one of the nodes, the spatial information being indicative of one or more features or locations within the tracking environment and determining the location of all stationary nodes in the tracking coordinate system, wherein some or all of the coordinates of the stationary nodes are used for tracking objects in the tracking system.Type: ApplicationFiled: August 12, 2015Publication date: September 28, 2017Inventors: Mark HEDLEY, Dan POPESCU
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Patent number: 9726751Abstract: This disclosure concerns estimating the location of a transmitter using multiple pairs of locator nodes with known locations and measuring time of arrival of a signal received from a transmitter. A processor of a location estimation node first determines time difference of arrival values from time of arrival values measured by each pair of locator nodes. The processor then determines likelihood information for multiple candidate locations of the transmitter and estimates the location of the transmitter from the likelihood information. A processor further determines an initial time of arrival value for the received signal and channel impulse response for a radio channel between the transmitter and receiver. The processor then determines a time correction from the channel impulse response based on a first peak of the channel impulse response and a leading edge of the first value. The processor finally determines an improved time of arrival value of the received signal.Type: GrantFiled: May 7, 2013Date of Patent: August 8, 2017Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventor: Mark Hedley
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Publication number: 20160370455Abstract: Disclosed is method of computing a round trip delay between a pair of nodes, the method comprising transmitting at least one beacon at a known transmit time from each of the nodes; measuring the times-of-arrival of the beacons at other of the nodes; and estimating a round trip delay between the nodes from the measured times-of-arrival and the transmit times; and correcting the round trip delay for either or both of a frequency offset between the nodes and relative motion between the nodes.Type: ApplicationFiled: September 1, 2016Publication date: December 22, 2016Inventors: Mark HEDLEY, David Eric HUMPHREY
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Patent number: 9313764Abstract: Disclosed is an apparatus for estimating the location of a remote node. The apparatus comprises an antenna array comprising a plurality of elements in a fixed spatial arrangement, at least one element being a transmitting element configured to transmit a first wireless signal to the remote node, and at least two elements being receiving elements configured to receive a second wireless signal transmitted by the remote node in response to the first wireless signal. The apparatus further comprises a signal processing unit connected to the antenna array, the signal processing unit being configured to: estimate a plurality of round trip distances using the wireless signals, each round trip distance being from a transmitting element to the remote node and back to a receiving element; and estimate the location of the remote node using the round trip distance estimates.Type: GrantFiled: July 20, 2011Date of Patent: April 12, 2016Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Mark Hedley, Yingjie Jay Guo, Xiaojing Huang
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Patent number: 9295021Abstract: Disclosed is a method of measuring time of arrival of a signal transmitted from a transmitter (120) to a receiver (110-n). The method comprises: modulating a plurality of narrowband signal portions onto different carrier frequencies; transmitting, by the transmitter, each modulated signal portion to the receiver; receiving, by the receiver, the transmitted signal portions; estimating the channel impulse response by combining (610) the received signal portions; and measuring (620) the time of arrival using the estimated channel impulse response. Further disclosed is a method of measuring a time of arrival of a signal transmitted from a transmitter to a receiver. The method comprises: estimating a noise level (1310) in an impulse response of a channel between the transmitter and the receiver; finding a first peak (1330) in the channel impulse response that is not noise or a side lobe of a subsequent peak, using the estimated noise level; and measuring the time of arrival (1220) using the first peak.Type: GrantFiled: May 25, 2009Date of Patent: March 22, 2016Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: Mark Hedley, David Humphrey
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Patent number: 9197996Abstract: A method and system for dynamically tracking the location of mobile nodes (104, 106, 108, 110n) in a wireless network (102) is disclosed. The method comprises: for each mobile node, dynamically measuring the range between the mobile node and at least one neighboring node (step 202); and executing a Bayesian tracking algorithm for each mobile node (step 204). The algorithm has the measured range as an input, exchanges data with tracking algorithms for neighboring mobile nodes, and utilizes a statistical model of error in measured range and a statistical model of node motion to dynamically determine location.Type: GrantFiled: January 11, 2012Date of Patent: November 24, 2015Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Thuraiappah Sathyan, Mark Hedley
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Publication number: 20150094086Abstract: This disclosure concerns estimating the location of a transmitter using multiple pairs of locator nodes with known locations and measuring time of arrival of a signal received from a transmitter. A processor of a location estimation node first determines time difference of arrival values from time of arrival values measured by each pair of locator nodes. The processor then determines likelihood information for multiple candidate locations of the transmitter and estimates the location of the transmitter from the likelihood information. A processor further determines an initial time of arrival value for the received signal and channel impulse response for a radio channel between the transmitter and receiver. The processor then determines a time correction from the channel impulse response based on a first peak of the channel impulse response and a leading edge of the first value. The processor finally determines an improved time of arrival value of the received signal.Type: ApplicationFiled: May 7, 2013Publication date: April 2, 2015Inventor: Mark Hedley
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Publication number: 20140194142Abstract: Disclosed is an apparatus for estimating the location of a remote node. The apparatus comprises an antenna array comprising a plurality of elements in a fixed spatial arrangement, at least one element being a transmitting element configured to transmit a first wireless signal to the remote node, and at least two elements being receiving elements configured to receive a second wireless signal transmitted by the remote node in response to the first wireless signal. The apparatus further comprises a signal processing unit connected to the antenna array, the signal processing unit being configured to: estimate a plurality of round trip distances using the wireless signals, each round trip distance being from a transmitting element to the remote node and back to a receiving element; and estimate the location of the remote node using the round trip distance estimates.Type: ApplicationFiled: July 20, 2011Publication date: July 10, 2014Applicant: COMMONWEALTH SCIENTFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: Mark Hedley, Yingjie Jay Guo, Xiaojing Huang
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Publication number: 20140045518Abstract: A method and system for dynamically tracking the location of mobile nodes (104, 106, 108, 110n) in a wireless network (102) is disclosed. The method comprises: for each mobile node, dynamically measuring the range between the mobile node and at least one neighbouring node (step 202); and executing a Bayesian tracking algorithm for each mobile node (step 204). The algorithm has the measured range as an input, exchanges data with tracking algorithms for neighbouring mobile nodes, and utilises a statistical model of error in measured range and a statistical model of node motion to dynamically determine location.Type: ApplicationFiled: January 11, 2012Publication date: February 13, 2014Inventors: Thuraiappah Sathyan, Mark Hedley
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Publication number: 20110286505Abstract: Disclosed is a method of measuring time of arrival of a signal transmitted from a transmitter (120) to reciever (110-n). The method comprises: modulating a plurality of narrowband signal portions onto different carrier frequencies; transmitting by the transmitter, each modulated signal portion to the receiver; receiving, by the receiver, the transmitted signal portions; estimating the channel impulse response by combining (610) the received signal portions; and measuring (620) the time of arrival using the estimated channel impulse response. Further disclosed is a method of measuring a time of arrival of a signal transmitted from a transmitter to a receiver. The method comprises: estimating a noise level (1310) in an impulse response of a channel between the transmitter and the receiver; finding a first peak (1330) in the channel impulse response that is not noise or a side lobe of a subsequent peak, using the estimated noise level; and measuring the time of arrival (1220) using the first peak.Type: ApplicationFiled: May 25, 2009Publication date: November 24, 2011Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: Mark Hedley, David Humphrey
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Publication number: 20110188389Abstract: Disclosed is method of computing a round trip delay between a pair of nodes, the method comprising transmitting at least one beacon at a known transmit time from each of the nodes; measuring the times-of-arrival of the beacons at other of the nodes; and estimating a round trip delay between the nodes from the measured times-of-arrival and the transmit times; and correcting the round trip delay for either or both of a frequency offset between the nodes and relative motion between the nodes.Type: ApplicationFiled: July 3, 2009Publication date: August 4, 2011Applicant: Commonwealth Scientific and Industrial Research OrganisationInventors: Mark Hedley, David Eric Humphrey