Patents by Inventor Mohamed Shawky
Mohamed Shawky 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: 20240158107Abstract: The application discloses a compact, multiport converter for interfacing photovoltaic (PV) panels to an energy storage system of a CubeSat. The multiport converter includes a series of connected half-bridge modules, fed by PV panels, that supplies the energy storage system. Further, a control strategy allows the multiport converter to extract a maximum amount of solar power from PV panels under varying irradiation conditions. One example multiport converter includes a multiple-input multiple-output converter that achieves a smaller footprint by utilizing a single inductor for transferring energy. Some aspects also enhance a fault-tolerance capability of CubeSats using a new EPS architecture, for example, by providing independent converters for maximum power point tracking of PV panels. The fault-tolerance capabilities are further enhanced by a new power-down mode for generation and load-side converters.Type: ApplicationFiled: March 11, 2022Publication date: May 16, 2024Inventors: Amarendra EDPUGANTI, Vinod Madhavrao KHADKIKAR, Hatem ZEINELDIN, Mohamed Shawky EL MOURSI
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Publication number: 20240072570Abstract: The integration of renewable energy resources and employment of multi-terminal dc links have dramatically transformed the structure of traditional power systems into hybrid networks with reduced inertia levels. A novel approach is proposed for determining bus inertia that captures power system dynamics and facilitates the real-time computation of grid flexibility. The bus inertia is defined as the distribution of the total inertia across all of the system buses, located in different geographical regions. The computation of bus inertia can use augmented admittance matrix, bus voltages, line parameters, inertia constants, and internal voltage setpoints of synchronous machines. The determination of bus inertia can be used during planning and operation phases that span long and short-time horizons to enhance system flexibility.Type: ApplicationFiled: August 24, 2023Publication date: February 29, 2024Inventors: Mohamed Shawky EL MOURSI, Sudipta GHOSH
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Patent number: 10537106Abstract: A gold nanoparticle-based assay for the detection of a target molecule, such as Hepatitis C Virus (HCV) RNA in serum samples, that uses positively charged gold nanoparticles (AuNPs) in solution based format. The assay has been tested on 74 serum clinical samples suspected of containing HCV RNA, with 48 and 38 positive and negative samples respectively. The developed assay has a specificity and sensitivity of 96.5% and 92.6% respectively. The results obtained were confirmed by Real-Time PCR, and a concordance of 100% for the negative samples and 89% for the positive samples has been obtained between the Real-Time PCR and the developed AuNPs based assay. Also, a purification method for the HCV RNA has been developed using HCV RNA specific probe conjugated to homemade silica nanoparticles. These silica nanoparticles have been synthesized by modified Stober method. This purification method enhanced the specificity of the developed AuNPs assay.Type: GrantFiled: August 4, 2016Date of Patent: January 21, 2020Assignee: AMERICAN UNIVERSITY IN CAIRO (AUC)Inventors: Hassan Mohamed El-Said Azzazy, Sherif Mohamed Shawky Abduo, Kamel Abdelmenem Mohamed Eid, Bassem Samy Shenouda Guirgis
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Publication number: 20190090491Abstract: A gold nanoparticle-based assay for the detection of a target molecule, such as Hepatitis C Virus (HCV) RNA in serum samples, that uses positively charged gold nanoparticles (AuNPs) in solution based format. The assay has been tested on 74 serum clinical samples suspected of containing HCV RNA, with 48 and 38 positive and negative samples respectively. The developed assay has a specificity and sensitivity of 96.5% and 92.6% respectively. The results obtained were confirmed by Real-Time PCR, and a concordance of 100% for the negative samples and 89% for the positive samples has been obtained between the Real-Time PCR and the developed AuNPs based assay. Also, a purification method for the HCV RNA has been developed using HCV RNA specific probe conjugated to homemade silica nanoparticles. These silica nanoparticles have been synthesized by modified Stober method. This purification method enhanced the specificity of the developed AuNPs assay.Type: ApplicationFiled: August 4, 2016Publication date: March 28, 2019Applicant: AMERICAN UNIVERSITY IN CAIRO (AUC)Inventors: Hassan Mohamed El-Said AZZAZY, Sherif Mohamed SHAWKY ABDUO, Kamel Abdelmenem Mohamed EID, Bassem Samy Shenouda GUIRGIS
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Patent number: 9926610Abstract: A gold nanoparticle-based colorimetric assay kit for nucleic acids from viral, bacterial and other microorganisms that detects unamplified or amplified polynucleotides in clinical specimens using unmodified AuNPs and oligotargeter polynucleotides that bind to a pathogen's nucleic acids. A method for detecting a pathogen comprising contacting a sample suspected of containing microbes with a polynucleotide that binds to pathogen nucleic acid and with gold nanoparticles, detecting the aggregation of nanoparticles, and detecting pathogen polynucleotides in the sample when the nanoparticles aggregate (solution color becomes blue) in comparison with a control or a negative sample not containing the virus when nanoparticles do not aggregate (solution color remains red).Type: GrantFiled: June 2, 2014Date of Patent: March 27, 2018Assignee: AMERICAN UNIVERSITY IN CAIROInventors: Hassan Mohamed El-Said Azzazy, Tamer Mohamed Samir, Sherif Mohamed Shawky
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Patent number: 9652663Abstract: Exemplary methods, apparatus, and systems are disclosed for authenticating a user to computing device. In one exemplary embodiment, an indication of a request by a user to unlock a mobile device in a locked state is received. One or more images of the face of the user are captured. Facial components of the user from the one or more captured images are extracted. A determination is made as to whether the user is an authorized user or a non-authorized user based at least in part on a comparison of the facial components of the user extracted from the one or more captured images to facial components of the authorized user from one or more authentication images of the authorized stored on the mobile device. If the user is determined to be the authorized user, the mobile device unlocked; otherwise, the mobile device is maintained in its locked state.Type: GrantFiled: July 2, 2015Date of Patent: May 16, 2017Assignee: Microsoft Technology Licensing, LLCInventors: James Kai Yu Lau, Ayman Kaheel, Motaz El-Saban, Mohamed Shawky, Monica Gonzalez, Ahmed El Baz, Tamer Deif, Alaa Abdel-Hakim Aly
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Patent number: 9303292Abstract: A gold nanoparticle-based colorimetric assay kit for hepatitis C virus RNA that detects unamplified HCV RNA in clinical specimens using unmodified AuNPs and oligotargeter polynucleotides that bind to HCV RNA. A method for detecting hepatitis C virus comprising contacting a sample suspected of containing hepatitis C virus with a polynucleotide that binds to hepatitis C virus RNA and with gold nanoparticles, detecting the aggregation of nanoparticles, and detecting hepatitis C virus in the sample when the nanoparticles aggregate (solution color becomes blue) in comparison with a control or a negative sample not containing the virus when nanoparticles do not aggregate (solution color remains red).Type: GrantFiled: January 10, 2011Date of Patent: April 5, 2016Assignee: The American University of CairoInventors: Sherif Mohamed Shawky Abduo, Hassan Mohamed El-Said Azzay El-Badawy
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Publication number: 20150310259Abstract: Exemplary methods, apparatus, and systems are disclosed for authenticating a user to computing device. In one exemplary embodiment, an indication of a request by a user to unlock a mobile device in a locked state is received. One or more images of the face of the user are captured. Facial components of the user from the one or more captured images are extracted. A determination is made as to whether the user is an authorized user or a non-authorized user based at least in part on a comparison of the facial components of the user extracted from the one or more captured images to facial components of the authorized user from one or more authentication images of the authorized stored on the mobile device. If the user is determined to be the authorized user, the mobile device unlocked; otherwise, the mobile device is maintained in its locked state.Type: ApplicationFiled: July 2, 2015Publication date: October 29, 2015Applicant: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: James Kai Yu Lau, Ayman Kaheel, Motaz El-Saban, Mohamed Shawky, Monica Gonzalez, Ahmed El Baz, Tamer Deif, Alaa Abdel-Hakim Aly
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Patent number: 9153031Abstract: Apparatus and methods are disclosed for modifying video based on user input and or face detection data received with a mobile device to generate foreground regions (e.g., to separate a user image from background in the video). According to one disclosed embodiment, a method comprises receiving user input and/or face regions generated with a mobile device, producing an initial representation for segmenting input video into a plurality of portions based on the user input, where the initial representation includes probabilities for one or more regions of the input video being designated as foreground regions or background regions. Based on the initial representation, input video is segmented by designating one or more of the regions of the input video as foreground regions or background regions.Type: GrantFiled: June 22, 2011Date of Patent: October 6, 2015Assignee: Microsoft Technology Licensing, LLCInventors: Motaz El-Saban, Ayman Kaheel, Mohamed Shawky, James Kai Yu Lau
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Patent number: 9082235Abstract: Exemplary methods, apparatus, and systems are disclosed for authenticating a user to computing device. In one exemplary embodiment, an indication of a request by a user to unlock a mobile device in a locked state is received. One or more images of the face of the user are captured. Facial components of the user from the one or more captured images are extracted. A determination is made as to whether the user is an authorized user or a non-authorized user based at least in part on a comparison of the facial components of the user extracted from the one or more captured images to facial components of the authorized user from one or more authentication images of the authorized stored on the mobile device. If the user is determined to be the authorized user, the mobile device unlocked; otherwise, the mobile device is maintained in its locked state.Type: GrantFiled: July 12, 2011Date of Patent: July 14, 2015Assignee: Microsoft Technology Licensing, LLCInventors: James Kai Yu Lau, Ayman Kaheel, Motaz El-Saban, Mohamed Shawky, Monica Gonzalez, Ahmed El Baz, Tamer Deif, Alaa Abdel-Hakim Aly
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Publication number: 20150017258Abstract: A gold nanoparticle-based assay for the detection of a target molecule, such as Hepatitis C Virus (HCV) RNA in serum samples, that uses positively charged gold nanoparticles (AuNPs) in solution based format. The assay has been tested on 74 serum clinical samples suspected of containing HCV RNA, with 48 and 38 positive and negative samples respectively. The developed assay has a specificity and sensitivity of 96.5% and 92.6% respectively. The results obtained were confirmed by Real-Time PCR, and a concordance of 100% for the negative samples and 89% for the positive samples has been obtained between the Real-Time PCR and the developed AuNPs based assay. Also, a purification method for the HCV RNA has been developed using HCV RNA specific probe conjugated to homemade silica nanoparticles. These silica nanoparticles have been synthesized by modified Stober method. This purification method enhanced the specificity of the developed AuNPs assay.Type: ApplicationFiled: January 31, 2013Publication date: January 15, 2015Applicant: AMERICAN UNIVERSITY OF CAIRO (AUC)Inventors: Hassan Mohamed El-Said Azzazy, Sherif Mohamed Shawky Abduo, Kamel Abdelmenem Mohamed Eid, Bassem Samy Shenouda Guirgis
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Publication number: 20140356859Abstract: A gold nanoparticle-based colorimetric assay kit for nucleic acids from viral, bacterial and other microorganisms that detects unamplified or amplified polynucleotides in clinical specimens using unmodified AuNPs and oligotargeter polynucleotides that bind to a pathogen's nucleic acids. A method for detecting a pathogen comprising contacting a sample suspected of containing microbes with a polynucleotide that binds to pathogen nucleic acid and with gold nanoparticles, detecting the aggregation of nanoparticles, and detecting pathogen polynucleotides in the sample when the nanoparticles aggregate (solution color becomes blue) in comparison with a control or a negative sample not containing the virus when nanoparticles do not aggregate (solution color remains red).Type: ApplicationFiled: June 2, 2014Publication date: December 4, 2014Applicant: American University of Cairo (AUC)Inventors: Hassan Mohamed El-Said AZZAZY, Tamer Mohamed Samir, Sherif Mohamed Shawky
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Patent number: 8767081Abstract: Video sharing is described. In an embodiment, mobile video capture devices such as mobile telephones capture video streams of the same event. A video sharing system obtains contextual information about the video streams and uses that to form a video output from the streams, that output being for sharing by other entities. For example, the formed video provides an enhanced viewing experience as compared with an individual one of the input video streams. In embodiments the contextual information may be obtained from content analysis of the video streams, from stored context information and from control information such as device characteristics. In some embodiments the video streams of a live event are received and the output video formed in real time. In examples feedback is provided to video capture devices to suggest that the zoom, viewing position or other characteristics are adjusted or to achieve this automatically.Type: GrantFiled: February 23, 2009Date of Patent: July 1, 2014Assignee: Microsoft CorporationInventors: Ayman Malek Kaheel, Motaz Ahmed El-Saban, Mohamed Shawky Abdallah, Mahmoud Ahmed Refaat Ali
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Publication number: 20130236880Abstract: A gold nanoparticle-based colorimetric assay kit for hepatitis C virus RNA that detects unamplified HCV RNA in clinical specimens using unmodified AuNPs and oligotargeter polynucleotides that bind to HCV RNA. A method for detecting hepatitis C virus comprising contacting a sample suspected of containing hepatitis C virus with a polynucleotide that binds to hepatitis C virus RNA and with gold nanoparticles, detecting the aggregation of nanoparticles, and detecting hepatitis C virus in the sample when the nanoparticles aggregate (solution color becomes blue) in comparison with a control or a negative sample not containing the virus when nanoparticles do not aggregate (solution color remains red).Type: ApplicationFiled: January 10, 2011Publication date: September 12, 2013Applicant: American University of CairoInventors: Sherif Mohamed Shawky Abduo, Hassan Mohamed El-Said Azzazy El-Badawy
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Publication number: 20130015946Abstract: Exemplary methods, apparatus, and systems are disclosed for authenticating a user to computing device. In one exemplary embodiment, an indication of a request by a user to unlock a mobile device in a locked state is received. One or more images of the face of the user are captured. Facial components of the user from the one or more captured images are extracted. A determination is made as to whether the user is an authorized user or a non-authorized user based at least in part on a comparison of the facial components of the user extracted from the one or more captured images to facial components of the authorized user from one or more authentication images of the authorized stored on the mobile device. If the user is determined to be the authorized user, the mobile device unlocked; otherwise, the mobile device is maintained in its locked state.Type: ApplicationFiled: July 12, 2011Publication date: January 17, 2013Applicant: Microsoft CorporationInventors: James Kai Yu Lau, Ayman Kaheel, Motaz El-Saban, Mohamed Shawky, Monica Gonzalez, Ahmed El Baz, Tamer Deif, Alaa Abdel-Hakim Aly
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Publication number: 20120327172Abstract: Apparatus and methods are disclosed for modifying video based on user input and or face detection data received with a mobile device to generate foreground regions (e.g., to separate a user image from background in the video). According to one disclosed embodiment, a method comprises receiving user input and/or face regions generated with a mobile device, producing an initial representation for segmenting input video into a plurality of portions based on the user input, where the initial representation includes probabilities for one or more regions of the input video being designated as foreground regions or background regions. Based on the initial representation, input video is segmented by designating one or more of the regions of the input video as foreground regions or background regions.Type: ApplicationFiled: June 22, 2011Publication date: December 27, 2012Applicant: Microsoft CorporationInventors: Motaz El-Saban, Ayman Kaheel, Mohamed Shawky, James Kai Yu Lau
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Patent number: 7889764Abstract: The present invention relates to a method for creating a correspondence between the local time of a first machine (B), having a first clock (HB), and that of a second machine (A), having a second clock (HA). The invention also relates to a method of synchronization between data recorded and date stamped by said first machine (B) with respect to the local time of said second machine (A). In order to make it more flexible and robust, this method does not comprise a synchronization of said clocks (HA, HB), but is based on the establishment of a correspondence ‘by intervals’ between the times that they indicate. In order to establish correspondence, a non-monotonic temporal reference may be formed by the clock of a synchronous bus connecting, at least temporarily, the two machines (and possibly other devices).Type: GrantFiled: February 17, 2005Date of Patent: February 15, 2011Assignees: Centre National de la Recherche Scientifique (CNRS), Universite de Technologie de Compiegne (UTC)Inventors: Philippe Bonnifait, Paul François Pierre Crubille, Véronique Cherfaoui, Hadji Amadou Gning El, Mohamed Shawky, Olivier Michel Bezet, Géry Brissot
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Publication number: 20100214419Abstract: Video sharing is described. In an embodiment, mobile video capture devices such as mobile telephones capture video streams of the same event. A video sharing system obtains contextual information about the video streams and uses that to form a video output from the streams, that output being for sharing by other entities. For example, the formed video provides an enhanced viewing experience as compared with an individual one of the input video streams. In embodiments the contextual information may be obtained from content analysis of the video streams, from stored context information and from control information such as device characteristics. In some embodiments the video streams of a live event are received and the output video formed in real time. In examples feedback is provided to video capture devices to suggest that the zoom, viewing position or other characteristics are adjusted or to achieve this automatically.Type: ApplicationFiled: February 23, 2009Publication date: August 26, 2010Applicant: Microsoft CorporationInventors: Ayman Malek Kaheel, Motaz Ahmed El-Saban, Mohamed Shawky Abdallah, Mahmoud Ahmed Refaat Ali
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Publication number: 20070297457Abstract: The present invention relates to a method for creating a correspondence between the local time of a first machine (B), having a first clock (HB), and that of a second machine (A), having a second clock (HA). The invention also relates to a method of synchronization between data recorded and date stamped by said first machine (B) with respect to the local time of said second machine (A). In order to make it more flexible and robust, this method does not comprise a synchronization of said clocks (HA, HB), but is based on the establishment of a correspondence ‘by intervals’ between the times that they indicate. In order to establish correspondence, a non-monotonic temporal reference may be formed by the clock of a synchronous bus connecting, at least temporarily, the two machines (and possibly other devices).Type: ApplicationFiled: February 17, 2005Publication date: December 27, 2007Inventors: Philippe Bonnifait, Paul Francois Crubille, Veronique Cherfaoui, Hadji Gning El, Mohamed Shawky, Olivier Bezet, Gery Brissot