Patents by Inventor Nigel Iain Stuart Macrae

Nigel Iain Stuart Macrae 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: 9306673
    Abstract: Disclosed is a method to transmit multiple linear electromagnetic signals on a same frequency. For N data signals Si, where i=1 through N, each data signal is transmitted at 180/N degrees rotation from the next. For each data signal Si, signals inverse to Si are transmitted at +180/N degrees and ?180/N degrees from Si, rotated around the transmit axis, at a power level of 0.5/COS (180°/N) times the power of said Si signal. This results in cancellation of said data signal Si along the transmit rotation of Si and a receivable data signal inverted and at a 90 degrees rotation from said transmitted Si. A total of N distinct data signals are transmitted simultaneously on a same frequency, resulting in a dramatic increase in capacity in an electromagnetic system. N is an integer greater than one and could be, for example, 18.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: April 5, 2016
    Inventor: Nigel Iain Stuart Macrae
  • Patent number: 8989289
    Abstract: A method and system for transmitting three distinct electromagnetic signals on a same frequency are provided. One or more transmitting devices transmit a first data signal and an inverse of the first data signal in two orthogonal linear polarities of an antenna maintaining their inverted phase relationship and a same amplitude as propagated. Transmitting devices also transmit a second data signal in a linear polarity with a 45 degree rotation around the transmit axis of the first data signal. Transmitting devices also transmit a third data signal in linear polarity orthogonal to the second data signal and consequently 315 degree rotation around the transmit axis from the first data signal.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: March 24, 2015
    Inventor: Nigel Iain Stuart Macrae
  • Patent number: 8737516
    Abstract: A method and system is provided for communicating distinct data over a single frequency using on-off keying, a form of amplitude modulation, or phase changes timed to the zero crossing point of the carrier. A data signal is synchronized with the carrier by adding padding bits so that the number of bits is equal to the frequency of the carrier. The carrier is then modified by attenuating the carrier as needed once per cycle. Said carrier is then transmitted. The resulting transmitted carrier carries a number of bits equal to the transmit frequency. At the receive end, the received signal is compared to a sine wave to determine if the incoming signal is at full strength or at reduced strength, allowing for the detection of encoded digital information. In a another embodiment, the phase of the carrier is changed instead of attenuating the carrier, timed to the carrier cycles, once or twice per cycle.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: May 27, 2014
    Inventor: Nigel Iain Stuart Macrae
  • Publication number: 20140065987
    Abstract: A method is disclosed to generate inverse circular waves in opposite circular polarities. A method is disclosed to receive circular polarity signals in the presence of inverse interfering linear signals.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 6, 2014
    Inventor: Nigel Iain Stuart Macrae
  • Publication number: 20140050231
    Abstract: A method and system for transmitting electromagnetic signals are provided. Data signals including a first data signal conveying first data, a second data signal conveying second data, and a third data signal conveying third data are provided. One or more transmitting devices transmit the first data signal and an inverse of the first data signal in two orthogonal linear polarities of an antenna maintaining their inverted phase relationship as propagated. Transmitting devices also transmit the second data signal in a linear polarity with a 45 degree rotation around a transmit axis of the first data signal. Transmitting devices also transmit the third data signal in linear polarity orthogonal from the second data signal and consequently 315 degree rotation around the transmit axis of the first data signal. One or more receiving stations receive the transmitted first data signal, the inverse of the first data signal, the second data signal and the third data signal.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 20, 2014
    Inventor: Nigel Iain Stuart Macrae
  • Patent number: 8605807
    Abstract: A method and system for transmitting electromagnetic signals are provided. Data signals including a first data signal conveying first data, a second data signal conveying second data, and a third data signal conveying third data are provided. One or more transmitting devices transmit the first data signal and an inverse of the first data signal in two orthogonal linear polarities of an antenna maintaining their inverted phase relationship as propagated. Transmitting devices also transmit the second data signal in a linear polarity with a 45 degree rotation around a transmit axis of the first data signal. Transmitting devices also transmit the third data signal in a linear polarity orthogonally from the second data signal and consequently ±45 degrees from the first data signals. One or more receiving stations receive the transmitted first data signal, the inverse of the first data signal, the second data signal and the third data signal.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: December 10, 2013
    Inventor: Nigel Iain Stuart Macrae
  • Publication number: 20130315319
    Abstract: A method and system for transmitting electromagnetic signals are provided. Data signals including a first data signal conveying first data, a second data signal conveying second data, and a third data signal conveying third data are provided. One or more transmitting devices transmit the first data signal and an inverse of the first data signal in two orthogonal linear polarities of an antenna maintaining their inverted phase relationship as propagated. Transmitting devices also transmit the second data signal in a linear polarity with a 45 degree rotation around a transmit axis of the first data signal. Transmitting devices also transmit the third data signal in a linear polarity orthogonally from the second data signal and consequently ±45 degrees from the first data signals. One or more receiving stations receive the transmitted first data signal, the inverse of the first data signal, the second data signal and the third data signal.
    Type: Application
    Filed: May 22, 2012
    Publication date: November 28, 2013
    Inventor: Nigel Iain Stuart Macrae
  • Publication number: 20130070872
    Abstract: A method and system is provided for communicating distinct data over a single frequency using on-off keying, a form of amplitude modulation, or phase changes timed to the zero crossing point of the carrier. A data signal is synchronized with the carrier by adding padding bits so that the number of bits is equal to the frequency of the carrier. The carrier is then modified by attenuating the carrier as needed once per cycle. Said carrier is then transmitted. The resulting transmitted carrier carries a number of bits equal to the transmit frequency. At the receive end, the received signal is compared to a sine wave to determine if the incoming signal is at full strength or at reduced strength, allowing for the detection of encoded digital information. In a another embodiment, the phase of the carrier is changed instead of attenuating the carrier, timed to the carrier cycles,once or twice per cycle.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Inventor: Nigel Iain Stuart Macrae
  • Patent number: 8351404
    Abstract: A method and apparatus for increasing user capacity in a multi-user communication system. The method comprises transmitting a signal multiple times in the communication system with a predetermined delay between each retransmission. A receiver receives the signals and makes multiple delayed copies of the signal which are then summed. A second signal is then transmitted multiple times in the communication system with a different delay time between each retransmission than the first signal, and then received by a receiver which makes multiple delayed copies of this second signal which are then summed and decoded. This process is then used on subsequent signals in the communication system.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: January 8, 2013
    Inventor: Nigel Iain Stuart Macrae
  • Patent number: 7957425
    Abstract: A method and system is provided for communicating distinct data over a single frequency using multiple polarized data signals. Data signals of the single frequency conveying first data, second data, and third data are polarized in a first polarization scheme and a second polarization scheme. The data signals comprise a first data signal, a second data signal, a third data signal, and inverse of the third data signal in a first configuration or a second configuration. The polarized data signals are transmitted from transmitting stations to one or more receiving stations. The first data, second data, and third data are obtained from the data signals received at the receiving stations using an antenna of a first polarity and an antenna of a second polarity. The amount of distinct data transmitted over the single frequency is increased by, for example, about 50% without causing interference between the data signals.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: June 7, 2011
    Inventor: Nigel Iain Stuart Macrae
  • Publication number: 20110076953
    Abstract: A method and apparatus for increasing user capacity in a multi-user communication system. The method comprises transmitting a signal multiple times in the communication system with a predetermined delay between each retransmission. A receiver receives the signals and makes multiple delayed copies of the signal which are then summed. A second signal is then transmitted multiple times in the communication system with a different delay time between each retransmission than the first signal, and then received by a receiver which makes multiple delayed copies of this second signal which are then summed and decoded. This process is then used on subsequent signals in the communication system.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 31, 2011
    Inventor: Nigel Iain Stuart Macrae
  • Publication number: 20110007758
    Abstract: A method and system is provided for communicating distinct data over a single frequency using multiple polarized data signals. Data signals of the single frequency conveying first data, second data, and third data are polarized in a first polarization scheme and a second polarization scheme. The data signals comprise a first data signal, a second data signal, a third data signal, and inverse of the third data signal in a first configuration or a second configuration. The polarized data signals are transmitted from transmitting stations to one or more receiving stations. The first data, second data, and third data are obtained from the data signals received at the receiving stations using an antenna of a first polarity and an antenna of a second polarity. The amount of distinct data transmitted over the single frequency is increased by, for example, about 50% without causing interference between the data signals.
    Type: Application
    Filed: July 7, 2009
    Publication date: January 13, 2011
    Inventor: Nigel Iain Stuart Macrae