Patents by Inventor Graham Earle ROWLANDS

Graham Earle ROWLANDS 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).

  • Analog hashing engines using physical dynamical systems
    Patent number: 11652485
    Abstract: An analog hashing system and method includes: an input port for accepting an input signal; a chaotic circuit including non-linear components and multiple chaotic attractors for generating an unpredictable output responsive to the input signal; a differential output port coupled to the chaotic circuit for producing an analog differential signal from the unpredictable output; and a clock circuit for producing a binary output, as a hash function, generated by the sign of the analog output in every clock cycle.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: May 16, 2023
    Assignee: RAYTHEON BBN TECHNOLOGIES CORP.
    Inventors: Andrew Phillips Wagner, Minh-Hai Nguyen, Graham Earle Rowlands, Guilhem Jean Antoine Ribeill
  • ANALOG HASHING ENGINES USING PHYSICAL DYNAMICAL SYSTEMS
    Publication number: 20220294452
    Abstract: An analog hashing system and method includes: an input port for accepting an input signal; a chaotic circuit including non-linear components and multiple chaotic attractors for generating an unpredictable output responsive to the input signal; a differential output port coupled to the chaotic circuit for producing an analog differential signal from the unpredictable output; and a clock circuit for producing a binary output, as a hash function, generated by the sign of the analog output in every clock cycle.
    Type: Application
    Filed: January 12, 2022
    Publication date: September 15, 2022
    Inventors: Andrew Phillips Wagner, Minh-Hai Nguyen, Graham Earle Rowlands, Guilhem Jean Antoine Ribeill
  • DUFFING OSCILLATOR RESERVOIR COMPUTER
    Publication number: 20220229632
    Abstract: A reservoir computer. In some embodiments, the reservoir computer includes a Duffing oscillator, and a readout circuit, and the readout circuit is configured to calculate a plurality of products, each of the products being calculated by multiplying a sample, of a plurality of samples of a signal from the Duffing oscillator, by a respective weight of a plurality of weights.
    Type: Application
    Filed: August 3, 2021
    Publication date: July 21, 2022
    Inventors: Luke Colin Gene GOVIA, William Daniel KALFUS, Guilhem Jean RIBEILL, Graham Earle ROWLANDS, Hari Kiran KROVI, Thomas Akira OHKI
  • RESERVOIR COMPUTER WITH A SERIES ARRAY OF JOSEPHSON JUNCTIONS
    Publication number: 20220093841
    Abstract: A reservoir computer. In some embodiments, the reservoir computer includes a series array of Josephson junctions, a coupling impedance, and a readout circuit. In some embodiments, the series array of Josephson junctions includes a plurality of Josephson junctions, connected in series; the coupling impedance is connected in parallel with the series array of Josephson junctions; and the readout circuit is connected to at least three nodes of the series array of Josephson junctions.
    Type: Application
    Filed: November 10, 2020
    Publication date: March 24, 2022
    Inventors: Graham Earle Rowlands, Thomas Akira Ohki, Guilhem Jean Antoine Ribeill, Minh-Hai Nguyen
  • SUPERCONDUCTING RESERVOIR COMPUTER WITH JOSEPHSON TRANSMISSION LINES
    Publication number: 20220012623
    Abstract: A reservoir computer. In some embodiments, the reservoir computer includes a discrete element transmission line and a readout circuit. The discrete element transmission line may include a plurality of shunt-connected Josephson junctions and a plurality of series-connected inductors connected to the shunt-connected Josephson junctions. The readout circuit may be connected to at least three nodes of the discrete element transmission line.
    Type: Application
    Filed: July 1, 2021
    Publication date: January 13, 2022
    Inventors: Graham Earle ROWLANDS, Thomas Akira OHKI, Guilhem Jean Antoine RIBEILL, Minh-Hai NGUYEN, Andrew Phillips WAGNER