Patents by Inventor Nadejda Reingand
Nadejda Reingand 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: 8019556Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.Type: GrantFiled: August 11, 2009Date of Patent: September 13, 2011Inventors: Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Patent number: 7945174Abstract: The invention provides a system and method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. This technique may include at least one or more of encoding a phase, a polarization, and a frequency of the signal. Light encoding is independent from its modulation with data. The data is modulated using any format; in the preferred embodiment the QPSK format is implemented. The encoded and modulated light is transmitted through free space or via a fiber optic network to a receiver, where the information is decoded. A coherent detection based on 90-degrees or 120-degrees optical hybrid is used to decode and recover the data from the received signal. Because the encoding of the transmitted light varies according to a specific pattern or sequence, one without knowledge of the transmission encoding sequence is prevented from decoding the transmitted information.Type: GrantFiled: February 8, 2008Date of Patent: May 17, 2011Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Nadejda Reingand, Aviv Salamon
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Patent number: 7897925Abstract: A method and system for high Z material revealing using muon detection technique is presented. The system measures muons' coordinates, velocities, incidence angles and leaving angles. Two series of detectors: one above and one below the interrogated volume are used. A muon trajectory deviation from an expected trajectory is used for the decision making on the presence of high Z material inside the volume. The muon velocity is measured using either a ring Cerenkov counter, a transition radiation detector or/and a threshold Cerenkov counter. The expected trajectory is calculated basing on known particle velocity.Type: GrantFiled: November 17, 2008Date of Patent: March 1, 2011Assignee: CeLight, Inc.Inventors: Jacques Goldberg, Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Publication number: 20100028024Abstract: The invention provides a system and method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. This technique may include at least one or more of encoding a phase, a polarization, and a frequency of the signal. Light encoding is independent from its modulation with data. The data is modulated using any format; in the preferred embodiment the QPSK format is implemented. The encoded and modulated light is transmitted through free space or via a fiber optic network to a receiver, where the information is decoded. A coherent detection based on 90-degrees or 120-degrees optical hybrid is used to decode and recover the data from the received signal. Because the encoding of the transmitted light varies according to a specific pattern or sequence, one without knowledge of the transmission encoding sequence is prevented from decoding the transmitted information.Type: ApplicationFiled: February 8, 2008Publication date: February 4, 2010Inventors: Isaac Shpantzer, Nadejda Reingand, Aviv Salamon
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Patent number: 7652254Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.Type: GrantFiled: January 25, 2007Date of Patent: January 26, 2010Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Publication number: 20090295576Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.Type: ApplicationFiled: August 11, 2009Publication date: December 3, 2009Inventors: Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Publication number: 20090224157Abstract: A method and system for high Z material revealing using muon detection technique is presented. The system measures muons' coordinates, velocities, incidence angles and leaving angles. Two series of detectors: one above and one below the interrogated volume are used. A muon trajectory deviation from an expected trajectory is used for the decision making on the presence of high Z material inside the volume. The muon velocity is measured using either a ring Cerenkov counter, a transition radiation detector or/and a threshold Cerenkov counter. The expected trajectory is calculated basing on known particle velocity.Type: ApplicationFiled: November 17, 2008Publication date: September 10, 2009Inventors: Jacques Goldberg, Isaac Shpantzer, Yaskov Achiam, Nadejda Reingand
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Patent number: 7570373Abstract: A measuring device and method are disclosed for parameter distribution measurement over the entire surface of sheet-like objects. The parameters of primary interest are thickness and permeability profiles. The device includes a parameter measuring unit a coordinate measuring unit and a synchronization unit to control operation of the parameter measuring unit and the coordinate measuring unit. The coordinate measuring unit determines the measuring device position on two-dimensional surface using image correlation analysis. The measuring device further comprises a platform for its movement in the plane of the sheet-like object.Type: GrantFiled: April 24, 2007Date of Patent: August 4, 2009Assignee: Prompribor, Inc.Inventors: Sergey Kholchanskiy, Victor Preobrazhenskiy, Igor Zelenyak, Victor Milovidov, Nadejda Reingand
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Patent number: 7512338Abstract: One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and a clock signal. The pulse generator is also configured to modify the optical signal based on the clock signal to produce an optical pulse having a predetermined pulse shape. The clock signal is associated with the predetermined pulse shape. The predetermined pulse shape being based on a transmission characteristic of the transmission link.Type: GrantFiled: August 11, 2006Date of Patent: March 31, 2009Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Israel Smilanski, Jacob B. Khurgin, Vladimir Grigoryan, Pak Shing Cho, Nadejda Reingand, Guy Levy-Yurista, Guoliang Li
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Patent number: 7470905Abstract: A method and system for high Z substance revealing using muon detection technique is presented. Natural muon coordinate and incidence angle are measured above and below the interrogated volume. The data on muons trajectory change caused by the presence of high Z material and the muons time of flight between the upper and lower muon detectors are used for the decision making on the presence of a nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks.Type: GrantFiled: November 29, 2007Date of Patent: December 30, 2008Assignee: CeLight, Inc.Inventors: Jacques Goldberg, Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Patent number: 7418209Abstract: The invention provides, according to its various embodiments, a method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. The multi-dimensional encoding technique includes multiple security layers and varies multiple physical characteristics of a communications signal. The multi-dimensional encoding technique may include at least one or more of encoding a phase of an optical communications signal, encoding a polarization of an optical communications signal, and encoding a frequency of an optical communications signal, or any combination thereof. According to embodiments of the invention, the encoding and/or any decoding of the optical communications signal may be carried out using one or more of an optical phase shift coding, a polarization multiplexing, and a multi-wavelength control. Multi-dimensional encoding and decoding keys are provided.Type: GrantFiled: June 17, 2003Date of Patent: August 26, 2008Assignee: CeLight, Inc.Inventors: Aviv Salamon, Nadejda Reingand, Isaac Shpantzer, Michael Tseytlin
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Publication number: 20080175600Abstract: One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and a clock signal. The pulse generator is also configured to modify the optical signal based on the clock signal to produce an optical pulse having a predetermined pulse shape. The clock signal is associated with the predetermined pulse shape.Type: ApplicationFiled: August 11, 2006Publication date: July 24, 2008Inventors: Isaac Shpantzer, Israel Smilanski, Jacob B. Khurgin, Vladimir Grigoryan, Pak Shing Cho, Nadejda Reingand, Guy Levy-Yurista, Guoliang Li
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Patent number: 7391969Abstract: One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and a clock signal. The pulse generator is also configured to modify the optical signal based on the clock signal to produce an optical pulse having a predetermined pulse shape. The clock signal is associated with the predetermined pulse shape. The predetermined pulse shape being based on a transmission characteristic of the transmission link.Type: GrantFiled: December 27, 2006Date of Patent: June 24, 2008Assignee: CeLight, Inc.Inventors: Isaac Shpantzer, Israel Smilanski, Jacob B. Khurgin, Vladimir Grigoryan, Pak Shing Cho, Nadejda Reingand, Guy Levy-Yurista, Guoliang Li
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Patent number: 7315697Abstract: A multiple wavelength light source generates an output signal having a comb of accurately spaced apart frequencies with variable free spectral range in the C-band of optical fiber communication. The light source employs an electro-optical modulator (EOM) driven by a signal generator which modulates with EOM with multiple modulation frequencies to widen the output spectrum of signal. The EOM has a crystal provided with a waveguide. The waveguide may be doped with a rare-earth metal to impart gain properties to equalize the intensities of the comb. In one preferred embodiment, Er, Yt or other doping elements provide the gain property to waveguides. The crystal is also provided with periodically poled structure, and this may be engineered so as to form domains of unequal widths to improve the efficiency of modulation. The output signal from the light source may be split and presented to a bank of filters to create a multiple signals, each signal having one of the spaced apart frequencies.Type: GrantFiled: June 18, 2002Date of Patent: January 1, 2008Assignee: CeLight, Inc.Inventors: Israel Smilanski, Isaac Shpantzer, Jacob B. Khurgin, Nadejda Reingand, Pak Shing Cho, Yaakov Achiam
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Publication number: 20070252592Abstract: A measuring device and method are disclosed for parameter distribution measurement over the entire surface of sheet-like objects. The parameters of primary interest are thickness and permeability profiles. The device includes a parameter measuring unit a coordinate measuring unit and a synchronization unit to control operation of the parameter measuring unit and the coordinate measuring unit. The coordinate measuring unit determines the measuring device position on two-dimensional surface using image correlation analysis. The measuring device further comprises a platform for its movement in the plane of the sheet-like object.Type: ApplicationFiled: April 24, 2007Publication date: November 1, 2007Inventors: Sergey Kholchanskiy, Victor Preobrazhenskiy, Igor Zelenyak, Victor Milovidov, Nadejda Reingand
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Patent number: 7266307Abstract: One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and a clock signal. The pulse generator is also configured to modify the optical signal based on the clock signal to produce an optical pulse having a predetermined pulse shape. The clock signal is associated with the predetermined pulse shape.Type: GrantFiled: August 9, 2002Date of Patent: September 4, 2007Inventors: Isaac Shpantzer, Israel Smilanski, Jacob B. Khurgin, Vladimir Grigoryan, Pak Shing Cho, Nadejda Reingand, Guy Levy-Yurista, Guoliang Li
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Publication number: 20070140705Abstract: One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and a clock signal. The pulse generator is also configured to modify the optical signal based on the clock signal to produce an optical pulse having a predetermined pulse shape. The clock signal is associated with the predetermined pulse shape.Type: ApplicationFiled: December 27, 2006Publication date: June 21, 2007Inventors: Isaac Shpantzer, Israel Smilanski, Jacob Khurgin, Vladimir Grigoryan, Pak Cho, Nadejda Reingand, Guy Levy-Yurista, Guoliang Li
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Patent number: 7224906Abstract: The present invention relates to a method for transmitting data. An optical pulse stream comprising a plurality of return-to-zero optical pulses is prepared by modulating a phase of light output by an optical source to thereby encode data from a data source. The light of the optical pulse stream has a wavelength. The optical pulse stream is transmitted along an optical fiber of an optical network. Optical pulse streams of the invention enhance transmission performance at least in part by reducing noise at the receiver caused by fiber non-linearities.Type: GrantFiled: February 28, 2002Date of Patent: May 29, 2007Assignee: CeLight, Inc.Inventors: Pak Shing Cho, Nadejda Reingand, Vladimir Grigoryan, Alper Demir, Aviv Salamon, Isaac Shpantzer
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Publication number: 20070102648Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.Type: ApplicationFiled: January 25, 2007Publication date: May 10, 2007Inventors: Isaac Shpantzer, Yaakov Achiam, Nadejda Reingand
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Method and system for optical time division multiplexed fiber communications with coherent detection
Patent number: 7110677Abstract: The present invention relates to a receiver for receiving a time division multiplexed (TDM) optical signal, which is formed of a plurality of interleaved optical pulse streams. Each optical pulse stream includes a plurality of optical pulses. The receiver includes a detector for detecting at least a first optical pulse stream of the optical signal and an optical hybrid for coherently mixing the first optical pulse stream with a reference pulse stream. The first optical pulse stream and the reference pulse stream impinge simultaneously upon the detector.Type: GrantFiled: September 26, 2001Date of Patent: September 19, 2006Assignee: CeLight, Inc.Inventors: Nadejda Reingand, Jacob Khurgin, Pak Shing Cho