Patents by Inventor Nicholas A. Lumsden

Nicholas A. Lumsden 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).

  • Publication number: 20230254797
    Abstract: A secure data transmission system and method for targeting specific receiver locations. The secure data transmission system includes a time multiplexer, a time delay unit, a receiver tacker, and a plurality of transmitters. Additionally, the secure data transmission system may include a multiplexing sequence, a digital switch, a plurality of empty vectors, a range calculator, a delay estimator, and a plurality of stream time delays. The method for targeting specific receiver location includes receiving an input data stream, multiplexing the input data steam, receiving at least one instantaneous receiver locations, calculating a plurality of transmission ranges for each of the plurality of output data streams, calculating a plurality of time delays for each of the plurality of output data streams, delaying each of the plurality of output data streams according its calculated time delay, and transmitting each of the plurality of output data streams.
    Type: Application
    Filed: February 4, 2022
    Publication date: August 10, 2023
    Inventors: Michael Civerolo, Nicholas Lumsden, Nicholas Johnson, Christopher Lichtenberg
  • Patent number: 10921423
    Abstract: A radar pulse generator includes a multiplexer, a polyphase synthesizer, a first signal channel and a second signal channel. The multiplexer has a baseband radar pulse input, a multiplexer control input, a first channel output and a second channel output. The baseband radar pulse input signal is a single channel baseband radar pulse signal. The multiplexer control input signal selects one of the group consisting of the first channel output and the second channel output. The polyphase synthesizer synthesizes the first channel output signal, synthesizes the second channel output signal and outputs a desired radar pulse signal based on the synthesized first channel output signal and the synthesized second channel output signal. The first signal channel provides the first channel output signal from the first channel output to the polyphase synthesizer. The second signal channel provides the second channel output signal from the second channel output to the polyphase synthesizer.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: February 16, 2021
    Assignee: United States of America as Represented by the Secretary of the Navy
    Inventors: Michael P. Civerolo, Nicholas T. Johnson, Nicholas A. Lumsden, Colin J. O'Brien
  • Patent number: 10742467
    Abstract: A signal processor is provided for use with a first signal generator and a second signal generator, wherein the first signal generator provides a first signal having a first amplitude and the second signal generator provides a second signal having a second amplitude. The signal processor includes: a threshold component that stores a threshold value; a threshold detection component that generates a sum of the first amplitude and the second amplitude, compares the sum with the threshold value, generates a modification required signal when the sum is greater than the threshold value; a delay component that generates a delay signal; and a delay processor operable to output an output signal based on the sum of a modified first signal and the second signal when the sum is greater than the threshold value.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: August 11, 2020
    Assignee: United States of America as represented by Secretary of the Navy
    Inventors: Michael P. Civerolo, Nicholas A. Lumsden, Drew E. Overturf
  • Patent number: 10666273
    Abstract: A system includes a very low frequency (VLF) antenna connected to a circuit that has a high pass filter and a low pass filter. The circuit is configured for noise reduction and frequency localization of detected VLF signals. A receiver is configured to receive filtered VLF signals output by the circuit and to separate desired signals for processing. A display is configured to provide a user with visual feedback based at least in part on an even signature extracted by a digital signal processor (DSP).
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: May 26, 2020
    Assignee: United States of America as represented by Secretary of the Navy
    Inventors: Oren Sternberg, John Rockway, Mitchell Lerner, Israel Perez, Nicholas Lumsden
  • Publication number: 20200033441
    Abstract: A radar pulse generator includes a multiplexer, a polyphase synthesizer, a first signal channel and a second signal channel. The multiplexer has a baseband radar pulse input, a multiplexer control input, a first channel output and a second channel output. The baseband radar pulse input signal is a single channel baseband radar pulse signal. The multiplexer control input signal selects one of the group consisting of the first channel output and the second channel output. The polyphase synthesizer synthesizes the first channel output signal, synthesizes the second channel output signal and outputs a desired radar pulse signal based on the synthesized first channel output signal and the synthesized second channel output signal. The first signal channel provides the first channel output signal from the first channel output to the polyphase synthesizer. The second signal channel provides the second channel output signal from the second channel output to the polyphase synthesizer.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 30, 2020
    Applicant: United States of America as represented by Secretary of the Navy
    Inventors: Michael P. Civerolo, Nicholas T. Johnson, Nicholas A. Lumsden, Colin J. O'Brien
  • Patent number: 10404211
    Abstract: A spot noise generator includes a mask component, a polyphase synthesizer, a first signal channel and second signal channel. The mask component has a narrowband noise input, a desired frequency channels word input, a first channel output and a second channel output. The narrowband noise input signal is a digital narrowband noise signal sampled approximately at the Nyquist rate. The desired frequency channels word selects one of the group consisting of the first channel output, the second channel output and a combination of the first channel output and the second channel output. The polyphase synthesizer synthesizes the first channel output signal, synthesizes the second channel output signal and outputs a desired noise signal based on the synthesized first channel output signal and the synthesized second channel output signal.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: September 3, 2019
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Michael Civerolo, Nicholas Johnson, Nicholas A. Lumsden, Christopher L. Lichtenberg
  • Patent number: 9923741
    Abstract: A signal detection method that allows characterization of a modulated signal to be efficiently determined. The method comprises the steps of receiving a data signal, processing the data signal to determine its value squaring the value of the signal; filtering the squared signal value to remove DC content; evaluating the resulting signal to determine if a single sinusoidal value remains; and determining that the presence of a single sinusoidal value as the resulting signal from the squaring and filtering steps indicates that the received data signal is a phase-shift key signal or conversely that the absence of such after a given number of cycle of squaring and filtering indicates a different modulation technique is present in the signal.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 20, 2018
    Assignee: The United States of America as represented by Secretary of the Navy
    Inventors: Michael P. Civerolo, Nicholas T. Johnson, Nicholas A. Lumsden
  • Publication number: 20170279643
    Abstract: A signal detection method that allows characterization of a modulated signal to be efficiently determined. The method comprises the steps of receiving a data signal, processing the data signal to determine its value squaring the value of the signal; filtering the squared signal value to remove DC content; evaluating the resulting signal to determine if a single sinusoidal value remains; and determining that the presence of a single sinusoidal value as the resulting signal from the squaring and filtering steps indicates that the received data signal is a phase-shift key signal or conversely that the absence of such after a given number of cycle of squaring and filtering indicates a different modulation technique is present in the signal.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 28, 2017
    Applicant: United States of America as represented by Secretary of the Navy
    Inventors: Michael P. Civerolo, Nicholas T. Johnson, Nicholas A. Lumsden