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).
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Patent number: 11789116Abstract: 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: GrantFiled: September 24, 2019Date of Patent: October 17, 2023Assignee: International Business Machines CorporationInventors: Alberto Valdes Garcia, Petar K. Pepeljugoski
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Patent number: 11774580Abstract: 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: GrantFiled: November 15, 2021Date of Patent: October 3, 2023Assignee: International Business Machines CorporationInventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
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Publication number: 20220075055Abstract: 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: ApplicationFiled: November 15, 2021Publication date: March 10, 2022Inventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
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Publication number: 20220026561Abstract: 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: ApplicationFiled: July 21, 2020Publication date: January 27, 2022Inventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
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Patent number: 11231498Abstract: 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: GrantFiled: July 21, 2020Date of Patent: January 25, 2022Assignee: International Business Machines CorporationInventors: Alberto Valdes Garcia, Jean-Olivier Plouchart, Petar K. Pepeljugoski
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Publication number: 20220021822Abstract: 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: ApplicationFiled: July 14, 2020Publication date: January 20, 2022Inventors: Alberto Valdes Garcia, Ahmet Serkan Ozcan, Vincent Albouy, Asaf Tzadok, Petar K. Pepeljugoski, Jean-Olivier Plouchart
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Publication number: 20210088625Abstract: 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: ApplicationFiled: September 24, 2019Publication date: March 25, 2021Inventors: Alberto Valdes Garcia, Petar K. Pepeljugoski
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Patent number: 9608761Abstract: 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: GrantFiled: June 19, 2015Date of Patent: March 28, 2017Assignee: International Business Machines CorporationInventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
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Patent number: 9584225Abstract: 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: GrantFiled: March 11, 2015Date of Patent: February 28, 2017Assignee: International Business Machines CorporationInventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
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Publication number: 20160269124Abstract: 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: ApplicationFiled: March 11, 2015Publication date: September 15, 2016Inventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
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Publication number: 20160269141Abstract: 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: ApplicationFiled: June 19, 2015Publication date: September 15, 2016Inventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
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Patent number: 9322987Abstract: 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: GrantFiled: August 27, 2013Date of Patent: April 26, 2016Assignee: International Business Machines CorporationInventors: Fuad Doany, Daniel M. Kuchta, Petar K. Pepeljugoski, Laurent Schares
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Publication number: 20150063755Abstract: 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: ApplicationFiled: August 27, 2013Publication date: March 5, 2015Applicant: International Business Machines CorporationInventors: Fuad DOANY, Daniel M. Kuchta, Petar K. Pepeljugoski, Laurent Schares
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Patent number: 8718492Abstract: 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: GrantFiled: December 17, 2010Date of Patent: May 6, 2014Assignee: International Business Machines CorporationInventors: Petar K. Pepeljugoski, Alexander V. Rylyakov, Clint L. Schow, Mehmet Soyuer
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Publication number: 20120155864Abstract: 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: ApplicationFiled: December 17, 2010Publication date: June 21, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Petar K. Pepeljugoski, Alexander V. Rylyakov, Clint L. Schow, Mehmet Soyuer