Patents by Inventor Petar K. Pepeljugoski

Petar K. Pepeljugoski 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: 11789116
    Abstract: A radar reflector is positioned at a predetermined angle and distance from a device to be tested. The device to be tested includes at least one of a transmit phased array antenna and a receive phased array antenna. At least two antenna elements of the at least one of a transmit phased array antenna and a receive phased array antenna are activated to carry out one of transmitting and receiving. A plurality of phase control settings are cycled through to determine an optimum phase control setting for the predetermined angle.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: October 17, 2023
    Assignee: International Business Machines Corporation
    Inventors: Alberto Valdes Garcia, Petar K. Pepeljugoski
  • Patent number: 11774580
    Abstract: A method for detecting the presence of on-body concealed objects includes receiving a visible-domain camera image for a scene, determining, using the visible-domain camera image, a region of interest where a subject is present, receiving an infrared-domain camera image and a millimeter-wave (mmwave) radar image that each cover the region of interest, determining emissivity information for the region of interest using the infrared-domain camera image, determining reflectivity information for the region of interest using the mmwave radar image and determining a concealed object classification for the subject based on the emissivity information and the reflectivity information. A corresponding system and computer program product for executing the above method are also disclosed herein.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: October 3, 2023
    Assignee: International Business Machines Corporation
    Inventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
  • Publication number: 20220075055
    Abstract: A method for detecting the presence of on-body concealed objects includes receiving a visible-domain camera image for a scene, determining, using the visible-domain camera image, a region of interest where a subject is present, receiving an infrared-domain camera image and a millimeter-wave (mmwave) radar image that each cover the region of interest, determining emissivity information for the region of interest using the infrared-domain camera image, determining reflectivity information for the region of interest using the mmwave radar image and determining a concealed object classification for the subject based on the emissivity information and the reflectivity information. A corresponding system and computer program product for executing the above method are also disclosed herein.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Inventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
  • Publication number: 20220026561
    Abstract: A method for detecting the presence of on-body concealed objects includes receiving a visible-domain camera image for a scene, determining, using the visible-domain camera image, a region of interest where a subject is present, receiving an infrared-domain camera image and a millimeter-wave (mmwave) radar image that each cover the region of interest, determining emissivity information for the region of interest using the infrared-domain camera image, determining reflectivity information for the region of interest using the mmwave radar image and determining a concealed object classification for the subject based on the emissivity information and the reflectivity information. A corresponding system and computer program product for executing the above method are also disclosed herein.
    Type: Application
    Filed: July 21, 2020
    Publication date: January 27, 2022
    Inventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
  • Patent number: 11231498
    Abstract: A method for detecting the presence of on-body concealed objects includes receiving a visible-domain camera image for a scene, determining, using the visible-domain camera image, a region of interest where a subject is present, receiving an infrared-domain camera image and a millimeter-wave (mmwave) radar image that each cover the region of interest, determining emissivity information for the region of interest using the infrared-domain camera image, determining reflectivity information for the region of interest using the mmwave radar image and determining a concealed object classification for the subject based on the emissivity information and the reflectivity information. A corresponding system and computer program product for executing the above method are also disclosed herein.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: January 25, 2022
    Assignee: International Business Machines Corporation
    Inventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
  • Publication number: 20220021822
    Abstract: An imaging system is provided. A first imaging system captures initial sensor data in a form of visible domain data. A second imaging system captures subsequent sensor data in a form of second domain data, wherein the initial and subsequent sensor data are of different spectral domains. A controller subsystem detects at least one region of interest in real-time by applying a machine learning technique to the visible domain data, localizes at least one object of interest in the at least one region of interest to generate positional data for the at least one object of interest, and autonomously steers a point of focus of the second imaging system to a region of a scene including the object of interest to capture the second domain data responsive to the positional data.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 20, 2022
    Inventors: Alberto Valdes Garcia, Ahmet Serkan Ozcan, Vincent Albouy, Asaf Tzadok, Petar K. Pepeljugoski, Jean-Olivier Plouchart
  • Publication number: 20210088625
    Abstract: A radar reflector is positioned at a predetermined angle and distance from a device to be tested. The device to be tested includes at least one of a transmit phased array antenna and a receive phased array antenna. At least two antenna elements of the at least one of a transmit phased array antenna and a receive phased array antenna are activated to carry out one of transmitting and receiving. A plurality of phase control settings are cycled through to determine an optimum phase control setting for the predetermined angle.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 25, 2021
    Inventors: Alberto Valdes Garcia, Petar K. Pepeljugoski
  • Patent number: 9608761
    Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: March 28, 2017
    Assignee: International Business Machines Corporation
    Inventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
  • Patent number: 9584225
    Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: February 28, 2017
    Assignee: International Business Machines Corporation
    Inventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
  • Publication number: 20160269124
    Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system.
    Type: Application
    Filed: March 11, 2015
    Publication date: September 15, 2016
    Inventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
  • Publication number: 20160269141
    Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system.
    Type: Application
    Filed: June 19, 2015
    Publication date: September 15, 2016
    Inventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
  • Patent number: 9322987
    Abstract: An optical connector includes a fiber element incorporating one or more optical fibers, the optical fiber including a plurality of cores, and an optical element including an array of optical waveguides arranged in one or more layers so as to match the geometry of the plurality of cores of the optical fiber.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: April 26, 2016
    Assignee: International Business Machines Corporation
    Inventors: Fuad Doany, Daniel M. Kuchta, Petar K. Pepeljugoski, Laurent Schares
  • Publication number: 20150063755
    Abstract: An optical connector includes a fiber element incorporating one or more optical fibers, the optical fiber including a plurality of cores, and an optical element including an array of optical waveguides arranged in one or more layers so as to match the geometry of the plurality of cores of the optical fiber.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: International Business Machines Corporation
    Inventors: Fuad DOANY, Daniel M. Kuchta, Petar K. Pepeljugoski, Laurent Schares
  • Patent number: 8718492
    Abstract: Systems and methods for processing an optical signal are disclosed. The optical signal is converted to a voltage signal and the voltage signal is amplified. In addition, a signal strength and/or a signal quality parameter is monitored and an indication of the signal strength and/or a signal quality parameter is generated. Further, a gain and/or an operating bandwidth on the conversion or the amplification can be adjusted based on the indication to reduce power consumption of an optical receiver.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: May 6, 2014
    Assignee: International Business Machines Corporation
    Inventors: Petar K. Pepeljugoski, Alexander V. Rylyakov, Clint L. Schow, Mehmet Soyuer
  • Publication number: 20120155864
    Abstract: Systems and methods for processing an optical signal are disclosed. The optical signal is converted to a voltage signal and the voltage signal is amplified. In addition, a signal strength and/or a signal quality parameter is monitored and an indication of the signal strength and/or a signal quality parameter is generated. Further, a gain and/or an operating bandwidth on the conversion or the amplification can be adjusted based on the indication to reduce power consumption of an optical receiver.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 21, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Petar K. Pepeljugoski, Alexander V. Rylyakov, Clint L. Schow, Mehmet Soyuer