Patents by Inventor Alexei Ivanov
Alexei Ivanov 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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Publication number: 20210375270Abstract: Methods and systems are disclosed herein for improvements relating to compressed automatic speech recognition (ASR) systems. The ASR system may comprise a compressed acoustic engine and an adaptive decoder. The adaptive decoder may be dynamically compiled based on characteristics of the compressed acoustic engine and a current state of the application device. In some embodiments, a dynamic command list is used to manage context-specific commands. Two or more commands recognized by the adaptive decoder may be confusable due to compression of the ASR system. Alternate commands may be determined that are semantically equivalent but phonetically different than the confusable commands to reduce classification error of the adaptive decoder. An alternate command may replace one or more of the confusable commands in the adaptive decoder. In some embodiments, a user interface is displayed to a user of the ASR system to select the alternate command for replacement in the decoder.Type: ApplicationFiled: June 1, 2021Publication date: December 2, 2021Applicant: Knowles Electronics, LLCInventors: Fuliang Weng, Alexei Ivanov, Stephen Cradock
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Publication number: 20210287674Abstract: Various methods, systems, and apparatus are disclosed with improved imposter rejection for keyword recognition systems in a wearable device. Speech signals are measured by a microphone and a vibration sensor, the vibration sensor configured to measure vibrations in the body of a wearer of the device. An audio signal from the microphone and a vibration signal from the vibration sensor are input into a classifier to determine whether the wearer of the device spoke the keyword. In some embodiments, high-frequency components of a signal from the microphone may be combined with low-frequency components of a signal from the vibration sensor to generate a combined speech signal. The classifier may use a classification model trained with positive training data of the wearer speaking the keyword and negative training data of a non-wearer speaking the keyword.Type: ApplicationFiled: March 15, 2021Publication date: September 16, 2021Applicant: Knowles Electronics, LLCInventors: Andy Unruh, Wenjing Yang, Bin Jiang, Stephen Cradock, Alexei Ivanov, Fuliang Weng, Scott Choi
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Publication number: 20210210109Abstract: Systems, methods, and apparatuses are disclosed herein for automatic speech recognition (ASR) in devices with limited memory or power constraints. An ASR system may have an acoustic engine and a decoder to identify a spoken command from an input audio stream. A dynamic command list may be used to reduce the size of an adapted lexicon used by the decoder, where the dynamic command list is associated with a state of the system. The decoder may be expanded based on labelled speech samples input into a compressed acoustic model of the ASR system. Speech samples may be collected and integrated to be user-specific.Type: ApplicationFiled: December 26, 2020Publication date: July 8, 2021Inventors: Fuliang Weng, Alexei Ivanov
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Patent number: 10190970Abstract: The present invention relates to a sensor using a tilted fiber grating to detect physical manifestations occurring in a medium. Such physical manifestations induce measurable changes in the optical property of the tilted fiber grating. The sensor comprises a sensing surface which is to be exposed to the medium, an optical pathway and a tilted grating in the optical pathway. The grating is responsive to electromagnetic radiation propagating in the optical pathway to generate a response conveying information on the physical manifestation.Type: GrantFiled: November 28, 2017Date of Patent: January 29, 2019Assignee: WEATHERFORD CANADA LTDInventors: Jacques Albert, Chengkun Chen, Yanina Shevchenko, Alexei Ivanov
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Publication number: 20180088028Abstract: The present invention relates to a sensor using a tilted fiber grating to detect physical manifestations occurring in a medium. Such physical manifestations induce measurable changes in the optical property of the tilted fiber grating. The sensor comprises a sensing surface which is to be exposed to the medium, an optical pathway and a tilted grating in the optical pathway. The grating is responsive to electromagnetic radiation propagating in the optical pathway to generate a response conveying information on the physical manifestation.Type: ApplicationFiled: November 28, 2017Publication date: March 29, 2018Inventors: Jacques ALBERT, Chengkun CHEN, Yanina SHEVCHENKO, Alexei IVANOV
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Patent number: 9857290Abstract: The present invention relates to a sensor using a tilted fiber grating to detect physical manifestations occurring in a medium. Such physical manifestations induce measurable changes in the optical property of the tilted fiber grating. The sensor comprises a sensing surface which is to be exposed to the medium, an optical pathway and a tilted grating in the optical pathway. The grating is responsive to electromagnetic radiation propagating in the optical pathway to generate a response conveying information on the physical manifestation.Type: GrantFiled: August 27, 2013Date of Patent: January 2, 2018Assignee: WEATHERFORD CANADA LTD.Inventors: Jacques Albert, Chengkun Chen, Yanina Shevchenko, Alexei Ivanov
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Publication number: 20140002821Abstract: The present invention relates to a sensor using a tilted fiber grating to detect physical manifestations occurring in a medium. Such physical manifestations induce measurable changes in the optical property of the tilted fiber grating. The sensor comprises a sensing surface which is to be exposed to the medium, an optical pathway and a tilted grating in the optical pathway. The grating is responsive to electromagnetic radiation propagating in the optical pathway to generate a response conveying information on the physical manifestation.Type: ApplicationFiled: August 27, 2013Publication date: January 2, 2014Applicant: LXData Inc.Inventors: Jacques Albert, Chengkun Chen, Yanina Shevchenko, Alexei Ivanov
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Patent number: 8554024Abstract: The present invention relates to a sensor using a tilted fiber grating to detect physical manifestations occurring in a medium. Such physical manifestations induce measurable changes in the optical property of the tilted fiber grating. The sensor comprises a sensing surface which is to be exposed to the medium, an optical pathway and a tilted grating in the optical pathway. The grating is responsive to electromagnetic radiation propagating in the optical pathway to generate a response conveying information on the physical manifestation.Type: GrantFiled: October 25, 2006Date of Patent: October 8, 2013Assignee: LXData Inc.Inventors: Jacques Albert, Chengkun Chen, Yanina Shevchenko, Alexei Ivanov
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Publication number: 20090263072Abstract: The present invention relates to a sensor using a tilted fiber grating to detect physical manifestations occurring in a medium. Such physical manifestations induce measurable changes in the optical property of the tilted fiber grating. The sensor comprises a sensing surface which is to be exposed to the medium, an optical pathway and a tilted grating in the optical pathway. The grating is responsive to electromagnetic radiation propagating in the optical pathway to generate a response conveying information on the physical manifestation.Type: ApplicationFiled: October 25, 2006Publication date: October 22, 2009Inventors: Jacques Albert, Chengkun Chen, Yanina Shevchenko, Alexei Ivanov
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Publication number: 20050096733Abstract: The inventions relate to the field of medicine and can be used in endoprosthetics for restoring a lumen in narrowed sections of vessels and other hollow organs. The stent is made as a netted hollow volumetric body, formed by interweaving of several groups of windings from a single length of a thread, placed along helical spirals with opposite entry directions. A material of the thread possesses elasticity and shape memory effect. Cells which are opposite with respect to the axis of the stent, are displaced with respect to each other, and the stoat thread has different elasticity in its separate sections, preserving the same thickness of the thread along the whole length of the stent. In the second variant of the stent its geometry is changed by way of making the stent with separate areas having a different axial curvature. The third variant of the stent unites the first and the second variants of the stent. In addition to that in all three variants the stent is manufactured from a medical nitinol Ti Ni.Type: ApplicationFiled: December 29, 2001Publication date: May 5, 2005Inventors: July Kovneristy, Boris Goncharenko, Oleg Vytouley, Anatoly Kulapov, Valery Cherkasov, Alexei Ivanov, Victor Partosh
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Publication number: 20040247224Abstract: The device comprises an optical waveguide and an acoustic wave generating device. The waveguide has an optical band gap and a sharp electronic transition (e.g. an excitonic transition) in the band gap, and the acoustic wave generating device generates acoustic waves within the waveguide. Light passing through the waveguide is of a frequency within the band gap of the waveguide and is nearly resonant with the sharp electronic transition. The wave generating device is arranged to generate acoustic waves so as to induce optical band gas in the polariton spectrum, thereby affecting the transmission of the light passing through the waveguide, the transmission of which is thereby affected.Type: ApplicationFiled: May 10, 2004Publication date: December 9, 2004Inventors: Peter Brent Littlewood, Alexei Ivanov
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Patent number: 4886649Abstract: A starting hydrogen sulfide-containing gas is purified by way of a two-stage oxidation to elemental sulfur with oxygen which is supplied in an amount of 100-110% of the stoichiometric quantity necessary for oxidizing hydrogen sulfide to elemental sulfur. Oxidation at the first stage is carried out in a fluidized bed of a granular catalyst containing 10-20% by mass of magnesium chromite on aluminium oxide. At the second oxidation stage, the unreacted hydrogen sulfide and oxygen from the first stage are reacted at 140.degree.-155.degree. C. in the presence of a catalyst to form elemental sulfur.The invention may be used in decontamination of natural gases high in hydrogen sulfide, gas releases of oil refinery and coke chemical plants.Type: GrantFiled: February 8, 1989Date of Patent: December 12, 1989Inventors: Zinfer R Ismagilov, Kirill I. Zamaraev, Sergei R. Khairulin, Tofik G. Alkhazov, Foat R. Ismagilov, Alexei A. Ivanov, Georgy B. Barannik, Mikhail A. Kerzhentsev, Valentin V. Nemkov, Valentin N. Parmon
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Patent number: 4478808Abstract: A method of preparing sulphur trioxide by the oxidation of sulphur dioxide contained in a reaction mixture in a stationary catalyst bed wherein the direction of the movement of the reaction mixture flow along the catalyst bed is reversed periodically each 10-200 minutes, or the temperature of said reaction mixture is changed in front of the catalyst bed from a temperature of 20.degree.-200.degree. C. to a temperature of 350.degree.-600.degree. C. each 10-200 minutes.Type: GrantFiled: December 24, 1981Date of Patent: October 23, 1984Assignee: Institut Kataliza Sibirskogo Otdelenia Akademii Nauk SSSRInventors: Jury S. Matros, Georgy K. Boreskov, Viktor S. Lakhmostov, Viktor J. Volkov, Alexei A. Ivanov