Patents by Inventor David Demmer
David Demmer 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: 11778579Abstract: The present disclosure concerns a method of estimation and correction, at the level of a base station, of a frequency drift (?F1, ?Fi, ?FN) between signals transmitted by a plurality of antenna systems (306_1, 306_i, 306_N) spatially distributed around a computing unit of the base station (304) and signals received by a radio device (310).Type: GrantFiled: May 16, 2022Date of Patent: October 3, 2023Assignee: Commissariat à l'Energie Atomique et aux Energies AlternativesInventor: David Demmer
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Patent number: 11777622Abstract: The present description concerns a method of processing by a radio transmitter/receiver (12) of a radio signal (SR) comprising a telecommunications signal disturbed by pulses of a radar signal, the method comprising the steps of: estimating the instantaneous power of the pulses, estimating the ratio of the average power of the telecommunications signal to the instantaneous power of the radar pulses, and modifying the radio signal at the locations of the radar pulses when said ratio is smaller than a threshold.Type: GrantFiled: December 16, 2021Date of Patent: October 3, 2023Assignee: Commissariat à l'Energie Atomique et aux Energies AlternativesInventors: Patrick Rosson, Jean-Baptiste Dore, Benoît Miscopein, David Demmer
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Publication number: 20230067275Abstract: Described herein are photonic sources and related system architectures that can satisfy the optical power requirements of large photonic accelerators. Some embodiments relate to a computer comprising a photonic accelerator configured to perform matrix multiplication; a fiber array optically coupled to the photonic accelerator; and a photonic source optically coupled to the fiber array. The photonic source comprising a laser array comprising a plurality of monolithically co-integrated lasers, and a coupling lens array comprising a plurality of monolithically co-integrated lenses, the coupling lens array optically coupling the laser array to the fiber array. The laser array is configured to output between 0.1 W and 10 W of optical power.Type: ApplicationFiled: August 30, 2022Publication date: March 2, 2023Applicant: Lightmatter, Inc.Inventors: Shashank Gupta, Michael Gould, James Carr, Nicholas C. Harris, Sven Mahnkopf, David Demmer
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Publication number: 20230045770Abstract: The present description concerns a method of processing by a radio transmitter/receiver (12) of a radio signal (SR) comprising a telecommunications signal disturbed by pulses of a radar signal, the method comprising the steps of: estimating the instantaneous power of the pulses, estimating the ratio of the average power of the telecommunications signal to the instantaneous power of the radar pulses, and modifying the radio signal at the locations of the radar pulses when said ratio is smaller than a threshold.Type: ApplicationFiled: December 16, 2021Publication date: February 9, 2023Inventors: Patrick ROSSON, Jean-Baptiste DORE, Benoît MISCOPEIN, David DEMMER
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Publication number: 20220377688Abstract: The present disclosure concerns a method of estimation and correction, at the level of a base station, of a frequency drift (?F1, ?Fi, ?FN) between signals transmitted by a plurality of antenna systems (306_1, 306_i, 306_N) spatially distributed around a computing unit of the base station (304) and signals received by a radio device (310).Type: ApplicationFiled: May 16, 2022Publication date: November 24, 2022Inventor: David DEMMER
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Publication number: 20220200714Abstract: The present description concerns a method of processing by a radio transmitter/receiver (12) of a radio signal (SR) comprising a telecommunications signal disturbed by pulses of a radar signal, the method comprising the steps of: estimating the instantaneous power of the pulses, estimating the ratio of the average power of the telecommunications signal to the instantaneous power of the radar pulses, and modifying the radio signal at the locations of the radar pulses when said ratio is smaller than a threshold.Type: ApplicationFiled: December 16, 2021Publication date: June 23, 2022Inventors: Patrick ROSSON, Jean-Baptiste DORE, Benoît MISCOPEIN, David DEMMER
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Patent number: 11330987Abstract: An implantable vital sign sensor including a housing including a first portion, the first portion defining a first open end, a second open end opposite the first end, and a lumen there through, the first portion being sized to be implanted substantially entirely within the blood vessel wall of the patient. A sensor module configured to measure a blood vessel blood pressure waveform is included, the sensor module having a proximal portion and a distal portion, the distal portion being insertable within the lumen and the proximal portion extending outward from the first open end.Type: GrantFiled: May 17, 2019Date of Patent: May 17, 2022Assignees: Thomas Jefferson University, RTM Vital Signs LLCInventors: Apurva Jain, Jeffrey I. Joseph, Nance Dicciani, Denise Devine, David Demmer
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Patent number: 11190259Abstract: A detection method for a MIMO system receiver in which a linear detection is carried out in order to provide an equalised vector. This equalised vector is represented in a reduced basis obtained from the reduction of the channel matrix. It undergoes an iterative noise cancellation process in the representation according to the reduced basis. Upon each iteration, a search is carried out for the component of the equalised vector in the reduced basis located the furthest from an area unperturbed by noise surrounding the product constellation with a tolerance margin, and the point representative of the equalised vector of this area by subtracting therefrom a noise vector in the direction of this component, the module whereof is equal to a fraction of the tolerance margin. The iterative cancellation converges when the equalised vector belongs to the area unperturbed by noise.Type: GrantFiled: February 4, 2020Date of Patent: November 30, 2021Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: David Demmer, Jean-Baptiste Dore
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Publication number: 20200259544Abstract: A detection method for a MIMO system receiver in which a linear detection is carried out in order to provide an equalised vector. This equalised vector is represented in a reduced basis obtained from the reduction of the channel matrix. It undergoes an iterative noise cancellation process in the representation according to the reduced basis. Upon each iteration, a search is carried out for the component of the equalised vector in the reduced basis located the furthest from an area unperturbed by noise surrounding the product constellation with a tolerance margin, and the point representative of the equalised vector of this area by subtracting therefrom a noise vector in the direction of this component, the module whereof is equal to a fraction of the tolerance margin. The iterative cancellation converges when the equalised vector belongs to the area unperturbed by noise.Type: ApplicationFiled: February 4, 2020Publication date: August 13, 2020Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: David DEMMER, Jean-Baptiste Dore
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Publication number: 20190298184Abstract: An implantable vital sign sensor including a housing including a first portion, the first portion defining a first open end, a second open end opposite the first end, and a lumen there through, the first portion being sized to be implanted substantially entirely within the blood vessel wall of the patient. A sensor module configured to measure a blood vessel blood pressure waveform is included, the sensor module having a proximal portion and a distal portion, the distal portion being insertable within the lumen and the proximal portion extending outward from the first open end.Type: ApplicationFiled: May 17, 2019Publication date: October 3, 2019Inventors: Apurva JAIN, Jeffrey I. JOSEPH, Nance DICCIANI, Denise DEVINE, David DEMMER
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Patent number: 10335043Abstract: An implantable vital sign sensor including a housing including a first portion, the first portion defining a first open end, a second open end opposite the first end, and a lumen there through, the first portion being sized to be implanted substantially entirely within the blood vessel wall of the patient. A sensor module configured to measure a blood vessel blood pressure waveform is included, the sensor module having a proximal portion and a distal portion, the distal portion being insertable within the lumen and the proximal portion extending outward from the first open end.Type: GrantFiled: November 17, 2016Date of Patent: July 2, 2019Assignee: Thomas Jefferson UniversityInventors: Apurva Jain, Jeffrey I. Joseph, Nance Dicciani, Denise Devine, David Demmer
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Publication number: 20170065188Abstract: An implantable vital sign sensor including a housing including a first portion, the first portion defining a first open end, a second open end opposite the first end, and a lumen there through, the first portion being sized to be implanted substantially entirely within the blood vessel wall of the patient. A sensor module configured to measure a blood vessel blood pressure waveform is included, the sensor module having a proximal portion and a distal portion, the distal portion being insertable within the lumen and the proximal portion extending outward from the first open end.Type: ApplicationFiled: November 17, 2016Publication date: March 9, 2017Inventors: Apurva JAIN, Jeffrey I. JOSEPH, Nance DICCIANI, Denise DEVINE, David DEMMER
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Publication number: 20060001933Abstract: A method and apparatus for producing holographic stereograms. Holographic stereograms have made possible the creation of holograms of both real objects in natural or studio lighting and virtual objects created using three-dimensional graphics. There are several approaches for creating holograms from digital graphics. This invention discusses the application of the light valve to the process along with other related developments. Artists can now produce high quality inexpensive, medium-format holograms using this direct-link to digital media. Future developments will lead to even higher resolution Digital Image-Light-Amplifier (D-ILA) systems.Type: ApplicationFiled: April 22, 2005Publication date: January 5, 2006Inventors: Michael Page, Thomas Haslett, David Demmer
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Publication number: 20030053162Abstract: The present invention provides a method and apparatus for producing holographic stereograms. Holographic stereograms have made possible the creation of holograms of both real objects in natural or studio lighting and virtual objects created using three-dimensional graphics. There are several approaches for creating holograms from digital graphics. This paper discusses the application of the light valve to the process along with other related developments. Artists can now produce high quality inexpensive, medium-format holograms using this direct-link to digital media. Future developments will led to even higher resolution Digital Image-Light-Amplifier (D-ILA) systems.Type: ApplicationFiled: July 5, 2002Publication date: March 20, 2003Inventors: Michael Page, Thomas L. Haslett, David Demmer
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Patent number: 6529540Abstract: A method and circuit is disclosed for providing a control signal to a laser cavity controller. The cavity has two completely reflective surfaces. A long lived laser medium stores energy within the cavity. A computer generated waveform generated from enough values to appear substantially smooth after being amplified is provided to a control circuit having a Pockels cell or a Bragg cell. By controlling the amplitude of the computer generated waveform, the output pulse of the laser cavity is controlled.Type: GrantFiled: September 22, 1999Date of Patent: March 4, 2003Assignee: Photonics Research OntarioInventors: David Demmer, Dwayne R. J. Miller, Barry Bruner
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Publication number: 20020080472Abstract: An amplifier for optical signals is disclosed. The amplifier includes a source of optical pump power and a containment body for substantially containing the pump power at a predetermined power intensity. At least one guided signal path passes through the containment body, the signal path being capable of carrying at least one optical signal component. The source of optical pump power is coupled to the containment body. In one embodiment the containment body is a transparent material surrounded by a material having a lower index of a fraction. Pump power is contained within the containment body by means of total internal reflection (TIR). In another embodiment the containment body is formed from a metallic reflective material which surrounds the guided signal paths passing through the containment body.Type: ApplicationFiled: November 21, 2001Publication date: June 27, 2002Inventors: Tom Haslett, Steve Hill, Blaine Hobson, David Demmer, Mike Liwak, Nikolay Stoev