Patents Assigned to Diani Systems, Inc.
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Patent number: 9014172Abstract: Two or more data packets transmitted through a wireless channel are received using a receiver device. The two or more data packets are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. Each data packet of the two or more data packets is transmitted at a single center frequency. Time differences and/or carrier phase differences among the two or more transmissions are estimated. A time-of-arrival of one or more data packets of the two or more data packets is calculated using each data packet of the two or more data packets and one or more of the estimated time differences, the different center frequencies, and the estimated carrier phase differences.Type: GrantFiled: September 4, 2012Date of Patent: April 21, 2015Assignee: Diani Systems, Inc.Inventors: Gary L. Sugar, Chandra Vaidyanathan, Yohannes Tesfai
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Patent number: 8687560Abstract: In a positioning system, each network access device in a first subset of N1 network access devices transmits a wireless location beacon signal, producing N1 wireless location beacon signals that are transmitted by the first subset. Each network access device in a second subset of N2 network access devices receives the Ni wireless location beacon signals from the first subset and calculates N1 TOAs from each of the N1 received wireless location beacon signals, producing N1×N2 calculated TOAs by the second subset. Using one or more wireless transmissions, one or more network access devices transmits the location coordinates of the network access devices and transmits the N1×N2 calculated TOAs, differences calculated among the N1×N2 calculated TOAs, or a combination of one or more of the N1×N2 calculated TOAs and one or more of the differences calculated among the N1×N2 calculated TOAs.Type: GrantFiled: August 16, 2013Date of Patent: April 1, 2014Assignee: Diani Systems, Inc.Inventors: Gary L. Sugar, Yohannes Tesfai, Chandra Vaidyanathan
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Publication number: 20140045522Abstract: In a positioning system, each network access device in a first subset of N1 network access devices transmits a wireless location beacon signal, producing N1 wireless location beacon signals that are transmitted by the first subset. Each network access device in a second subset of N2 network access devices receives the N1 wireless location beacon signals from the first subset and calculates N1 TOAs from each of the N1 received wireless location beacon signals, producing N1×N2 calculated TOAs by the second subset. Using one or more wireless transmissions, one or more network access devices transmits the location coordinates of the network access devices and transmits the N1×N2 calculated TOAs, differences calculated among the N1×N2 calculated TOAs, or a combination of one or more of the N1×N2 calculated TOAs and one or more of the differences calculated among the N1×N2 calculated TOAs.Type: ApplicationFiled: August 16, 2013Publication date: February 13, 2014Applicant: DIANI SYSTEMS, INC.Inventors: Gary L. Sugar, Yohannes Tesfai, Chandra Vaidyanathan
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Publication number: 20130250791Abstract: Two or more data packets transmitted through a wireless channel are received using a receiver device. The two or more data packets are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. Each data packet of the two or more data packets is transmitted at a single center frequency. Time differences and/or carrier phase differences among the two or more transmissions are estimated. A time-of-arrival of one or more data packets of the two or more data packets is calculated using each data packet of the two or more data packets and one or more of the estimated time differences, the different center frequencies, and the estimated carrier phase differences.Type: ApplicationFiled: May 9, 2013Publication date: September 26, 2013Applicant: Diani Systems, Inc.Inventors: Gary L. Sugar, Chandra Vaidyanathan, Yohannes Tesfai
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Publication number: 20120320787Abstract: Two or more data packets transmitted through a wireless channel are received using a receiver device. The two or more data packets are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. Each data packet of the two or more data packets is transmitted at a single center frequency. Time differences and/or carrier phase differences among the two or more transmissions are estimated. A time-of-arrival of one or more data packets of the two or more data packets is calculated using each data packet of the two or more data packets and one or more of the estimated time differences, the different center frequencies, and the estimated carrier phase differences.Type: ApplicationFiled: September 4, 2012Publication date: December 20, 2012Applicant: DIANI SYSTEMS, INC.Inventors: Gary L. Sugar, Chandra Vaidyanathan, Yohannes Tesfai
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Patent number: 8265011Abstract: Two or more data packets transmitted through a wireless channel are received using a receiver device. The two or more data packets are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. Each data packet of the two or more data packets is transmitted at a single center frequency. Time differences and/or carrier phase differences among the two or more transmissions are estimated. A time-of-arrival of one or more data packets of the two or more data packets is calculated using each data packet of the two or more data packets and one or more of the estimated time differences, the different center frequencies, and the estimated carrier phase differences.Type: GrantFiled: January 22, 2012Date of Patent: September 11, 2012Assignee: Diani Systems, Inc.Inventors: Gary L. Sugar, Chandra Vaidyanathan, Yohannes Tesfai
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Publication number: 20120120834Abstract: Two or more data packets transmitted through a wireless channel are received using a receiver device. The two or more data packets are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. Each data packet of the two or more data packets is transmitted at a single center frequency. Time differences and/or carrier phase differences among the two or more transmissions are estimated. A time-of-arrival of one or more data packets of the two or more data packets is calculated using each data packet of the two or more data packets and one or more of the estimated time differences, the different center frequencies, and the estimated carrier phase differences.Type: ApplicationFiled: January 22, 2012Publication date: May 17, 2012Applicant: Diani Systems, Inc.Inventors: Gary L. Sugar, Chandra Vaidyanathan, Yohannes Tesfai
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Patent number: 8179816Abstract: A sequence of two or more signals representing two or more data packets is transmitted through a wireless channel using a transmitter device. The two or more signals are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. At least one of the two or more signals includes a physical layer preamble. The sequence of two or more signals is received using a receiver device. A time of arrival of one or more signals of the received sequence is calculated using one or more of the received sequence, the time differences among the two or more transmissions, the different center frequencies, information from the two or more data packets, and any carrier phase differences among the two or more transmissions using the receiver device.Type: GrantFiled: November 1, 2011Date of Patent: May 15, 2012Assignee: Diani Systems, Inc.Inventors: Chandra Vaidyanathan, Gary L Sugar, Yohannes Tesfai
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Publication number: 20120106380Abstract: A sequence of two or more signals representing two or more data packets is transmitted through a wireless channel using a transmitter device. The two or more signals are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. At least one of the two or more signals includes a physical layer preamble. The sequence of two or more signals is received using a receiver device. A time of arrival of one or more signals of the received sequence is calculated using one or more of the received sequence, the time differences among the two or more transmissions, the different center frequencies, information from the two or more data packets, and any carrier phase differences among the two or more transmissions using the receiver device.Type: ApplicationFiled: November 1, 2011Publication date: May 3, 2012Applicant: DIANI SYSTEMS, INC.Inventors: Chandra Vaidyanathan, Gary L. Sugar, Yohannes Tesfai