Patents by Inventor Iason Giannopoulos

Iason Giannopoulos 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: 20230297268
    Abstract: The invention is notably directed to a method of processing data in-memory. The method applies electrical signals to at least two input lines, which correspond to at least two rows. These two rows include at least one of the K rows and at least one of the L rows. This causes to obtain output signals in output of the M output lines, wherein the output signals depend on target values and operand values, in accordance with data stored across said at least two rows. Finally, the output signals are read out and a transformation operation is concurrently performed, in-memory, on the target values based on the operand values. This way transformed data are obtained by way of in-memory processing. The transformation may for instance be a cryptographic operation; the operand data may encode a cryptographic key. The invention is further directed to related apparatuses and systems, notably cryptographic service systems.
    Type: Application
    Filed: March 21, 2022
    Publication date: September 21, 2023
    Inventors: Iason Giannopoulos, Navaneeth Rameshan, Vara Sudananda Prasad Jonnalagadda, Abu Sebastian
  • Patent number: 10957853
    Abstract: Embodiments of the invention are directed to a method to modify material properties of a functional material of a nanoscale device post-fabrication. The method includes performing one or more conditioning steps. The conditioning steps include applying electrical conditioning signals of predefined form to the nanoscale device, thereby performing an in-situ heating of the functional material and inducing thermally a displacement of atoms, molecules or ions of the functional material of the nanoscale device. Embodiments of the invention further concerns a related electronic device.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: March 23, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Iason Giannopoulos, Abu Sebastian, Vara S. P. Jonnalagadda
  • Patent number: 10832772
    Abstract: The present disclosure relates to an apparatus for a memristor crossbar array. The apparatus comprises an adjustment circuit configured for receiving a current that is output by the array at an actual operating condition of the array. The apparatus further comprises a calibration circuit configured for determining a measured or modelled variation of output currents of the array at the actual operating condition with respect to a reference operating condition, wherein the adjustment circuit is configured to adjust the output current by the variation.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 10, 2020
    Assignee: International Business Machines Corporation
    Inventors: Iason Giannopoulos, Abu Sebastian, Evangelos Stavros Eleftheriou, Manuel Le Gallo-Bourdeau, Vara Sudananda Prasad Jonnalagadda
  • Publication number: 20200118624
    Abstract: The present disclosure relates to an apparatus for a memristor crossbar array. The apparatus comprises an adjustment circuit configured for receiving a current that is output by the array at an actual operating condition of the array. The apparatus further comprises a calibration circuit configured for determining a measured or modelled variation of output currents of the array at the actual operating condition with respect to a reference operating condition, wherein the adjustment circuit is configured to adjust the output current by the variation.
    Type: Application
    Filed: January 3, 2019
    Publication date: April 16, 2020
    Inventors: Iason Giannopoulos, Abu Sebastian, Evangelos Stavros Eleftheriou, Manuel Le Gallo-Bourdeau, Vara Sudananda Prasad Jonnalagadda
  • Publication number: 20200091422
    Abstract: Embodiments of the invention are directed to a method to modify material properties of a functional material of a nanoscale device post-fabrication. The method includes performing one or more conditioning steps. The conditioning steps include applying electrical conditioning signals of predefined form to the nanoscale device, thereby performing an in-situ heating of the functional material and inducing thermally a displacement of atoms, molecules or ions of the functional material of the nanoscale device. Embodiments of the invention further concerns a related electronic device.
    Type: Application
    Filed: September 18, 2018
    Publication date: March 19, 2020
    Inventors: Iason Giannopoulos, Abu Sebastian, Vara S. P. Jonnalagadda