Patents by Inventor Christoph Posch
Christoph Posch 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: 10721423Abstract: A pixel circuit for detecting time-dependent visual data includes a photo sensing device detecting a light intensity and generating a signal representing the detected light intensity. The pixel circuit further includes: a voltage amplifier configured for amplifying the signal representing the detected light intensity and generating an amplified signal, the amplified signal being generated by taking into account a control signal which shifts an input voltage offset of the voltage amplifier; a hysteresis comparing module configured for comparing the amplified signal to at least one threshold value and to a reference value and for generating at least one output signal based on the comparison; and a feedback control module configured for generating the control signal of the voltage amplifier based on the at least one output signal generated by the hysteresis comparing module.Type: GrantFiled: October 19, 2017Date of Patent: July 21, 2020Assignees: PROPHESEE, CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICASInventors: Thomas Finateu, Bernabé Linares Barranco, Teresa Serrano Gotarredona, Christoph Posch
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Publication number: 20200106972Abstract: The invention relates to pixel circuit and an operating method thereof, comprising—a front-end circuit (1) comprising a single photodiode (PD) and having an output (4), said front-end circuit (1) being configured for delivering on said output a photoreceptor signal derived from a light exposure of said single photodiode (PD);—a transient detector circuit (2) configured for detecting a change in said photoreceptor signal delivered on said output (4);—an exposure measurement circuit (3) configured for measuring said photoreceptor signal delivered on said output (4) upon detection by the transient detector circuit (2) of a change in the photoreceptor signal.Type: ApplicationFiled: December 3, 2019Publication date: April 2, 2020Inventors: Daniel MATOLIN, Christoph POSCH
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Publication number: 20200068149Abstract: This invention relates to a pixel circuit comprising a photo-sensor stage (10) comprising a photodiode (1) delivering a photoreceptor current (Iph), a comparison stage (30) configured for detecting a change in a signal voltage (Vph) derived from said photoreceptor current, a sample-and-hold circuit (50) connected to the converting stage (20) and to the comparison stage (30), said comparison stage (30) configured to output an input signal for the sample-and-hold circuit (50), and for emitting a sampling signal to a control terminal of the sample-and-hold circuit (50) when a change is detected in the signal voltage (Vph).Type: ApplicationFiled: October 28, 2019Publication date: February 27, 2020Inventors: Thomas FINATEU, Bernabe LINARES BARRANCO, Teresa SERRANO GOTARREDONA, Christoph POSCH
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Patent number: 10567682Abstract: The invention relates to pixel circuit and an operating method thereof, comprising a front-end circuit comprising a single photodiode and having an output, said front-end circuit being configured for delivering on said output a photoreceptor signal derived from a light exposure of said single photodiode; a transient detector circuit configured for detecting a change in said photoreceptor signal delivered on said output; an exposure measurement circuit configured for measuring said photoreceptor signal delivered on said output upon detection by the transient detector circuit of a change in the photoreceptor signal. The invention also relates to an image sensor comprising a plurality of pixel circuits.Type: GrantFiled: November 30, 2017Date of Patent: February 18, 2020Assignee: PropheseeInventors: Daniel Matolin, Christoph Posch
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Patent number: 10530971Abstract: A pixel cell circuit comprises an electrode, one or more main photosensitive elements electrically coupled to the electrode for outputting a stimulation signal to the electrode responsive to light illumination, and a shunt arrangement comprising a shunt switch electrically coupled in parallel across the one or more photosensitive elements, and a control arrangement operatively coupled to the shunt switch and configured for placing the shunt switch in an open state responsive to incident light received at the pixel cell and placing the shunt switch in a closed state if no incident light is received at the pixel cell.Type: GrantFiled: April 6, 2016Date of Patent: January 7, 2020Assignees: PIXIUM VISION, UNIVERSITE PIERRE ET MARIE CURIE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALEInventors: Daniel Matolin, Christoph Posch, Benjamin Ryad Benosman
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Patent number: 10500397Abstract: Disclosed is a method for processing asynchronous signals generated by a light sensor, the sensor having a matrix of pixels, the method including: —receiving the asynchronous signals, each signal being associated with a pixel in a group of pixels in the matrix, each signal including successive events issued by the associated pixel; —upon an occurrence of an event in one of the asynchronous signals, updating an integration value associated to the group by adding an additive value to the integration value; —if the integration value is greater than a predetermined threshold, generating an event in an outputted asynchronous signal.Type: GrantFiled: July 18, 2016Date of Patent: December 10, 2019Assignees: SORBONNE UNIVERSITE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE)Inventors: Ryad Benosman, Francesco Gallupi, Guillaume Chenegros, Xavier Lagorce, Christoph Posch
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Patent number: 10469776Abstract: This invention relates to a pixel circuit comprising a photo-sensor stage comprising a photodiode delivering a photoreceptor current, a comparison stage configured for detecting a change in a signal voltage derived from said photoreceptor current, a sample-and-hold circuit connected to the converting stage and to the comparison stage, said comparison stage configured to output an input signal for the sample-and-hold circuit, and for emitting a sampling signal to a control terminal of the sample-and-hold circuit when a change is detected in the signal voltage.Type: GrantFiled: April 4, 2017Date of Patent: November 5, 2019Assignees: Prophesee, Consejo Superior de Investigaciones CientificasInventors: Thomas Finateu, Bernabe Linares Barranco, Teresa Serrano Gotarredona, Christoph Posch
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Publication number: 20190273884Abstract: A pixel circuit for detecting time-dependent visual data includes a photo sensing device detecting a light intensity and generating a signal representing the detected light intensity. The pixel circuit further includes: a voltage amplifier configured for amplifying the signal representing the detected light intensity and generating an amplified signal, the amplified signal being generated by taking into account a control signal which shifts an input voltage offset of the voltage amplifier; a hysteresis comparing module configured for comparing the amplified signal to at least one threshold value and to a reference value and for generating at least one output signal based on the comparison; and a feedback control module configured for generating the control signal of the voltage amplifier based on the at least one output signal generated by the hysteresis comparing module.Type: ApplicationFiled: October 19, 2017Publication date: September 5, 2019Applicants: PROPHESEE, CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICASInventors: Thomas FINATEU, Bernabé LINARES BARRANCO, Teresa SERRANO GOTARREDONA, Christoph POSCH
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Publication number: 20190141265Abstract: This invention relates to a pixel circuit comprising a photo-sensor stage (10) comprising a photodiode (1) delivering a photoreceptor current (Iph), a comparison stage (30) configured for detecting a change in a signal voltage (Vph) derived from said photoreceptor current, a sample-and-hold circuit (50) connected to the converting stage (20) and to the comparison stage (30), said comparison stage (30) configured to output an input signal for the sample-and-hold circuit (50), and for emitting a sampling signal to a control terminal of the sample-and-hold circuit (50) when a change is detected in the signal voltage (Vph).Type: ApplicationFiled: April 4, 2017Publication date: May 9, 2019Inventors: Thomas FINATEU, Bernabe LINARES BARRANCO, Teresa SERRANO GOTARREDONA, Christoph POSCH
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Publication number: 20180207423Abstract: Disclosed is a method for processing asynchronous signals generated by a light sensor, the sensor having a matrix of pixels, the method including: —receiving the asynchronous signals, each signal being associated with a pixel in a group of pixels in the matrix, each signal including successive events issued by the associated pixel; —upon an occurrence of an event in one of the asynchronous signals, updating an integration value associated to the group by adding an additive value to the integration value; —if the integration value is greater than a predetermined threshold, generating an event in an outputted asynchronous signal.Type: ApplicationFiled: July 18, 2016Publication date: July 26, 2018Applicants: UNIVERSITE PIERRE ET MARIE CURIE (PARIS 6), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS, INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE)Inventors: Ryad BENOSMAN, Francesco GALLUPI, Guillaume CHENEGROS, Xavier LAGORCE, Christoph POSCH
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Patent number: 9967479Abstract: The invention relates to pixel circuit and an operating method thereof, comprising a front-end circuit comprising a single photodiode and having an output, said front-end circuit being configured for delivering on said output a photoreceptor signal derived from a light exposure of said single photodiode; a transient detector circuit configured for detecting a change in said photoreceptor signal delivered on said output; an exposure measurement circuit configured for measuring said photoreceptor signal delivered on said output upon detection by the transient detector circuit of a change in the photoreceptor signal. The invention also relates to an image sensor comprising a plurality of pixel circuits.Type: GrantFiled: September 15, 2014Date of Patent: May 8, 2018Assignee: CHRONOCAMInventors: Daniel Matolin, Christoph Posch
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Publication number: 20180098003Abstract: The invention relates to pixel circuit and an operating method thereof, comprising a front-end circuit comprising a single photodiode and having an output, said front-end circuit being configured for delivering on said output a photoreceptor signal derived from a light exposure of said single photodiode; a transient detector circuit configured for detecting a change in said photoreceptor signal delivered on said output; an exposure measurement circuit configured for measuring said photoreceptor signal delivered on said output upon detection by the transient detector circuit of a change in the photoreceptor signal. The invention also relates to an image sensor comprising a plurality of pixel circuits.Type: ApplicationFiled: November 30, 2017Publication date: April 5, 2018Applicant: CHRONOCAMInventors: Daniel Matolin, Christoph Posch
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Publication number: 20180078766Abstract: A pixel cell circuit comprises an electrode, one or more main photosensitive elements electrically coupled to the electrode for outputting a stimulation signal to the electrode responsive to light illumination, and a shunt arrangement comprising a shunt switch electrically coupled in parallel across the one or more photosensitive elements, and a control arrangement operatively coupled to the shunt switch and configured for placing the shunt switch in an open state responsive to incident light received at the pixel cell and placing the shunt switch in a closed state if no incident light is received at the pixel cell.Type: ApplicationFiled: April 6, 2016Publication date: March 22, 2018Inventors: Daniel MATOLIN, Christoph POSCH, Benjamin Ryad BENOSMAN
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Patent number: 9598718Abstract: The present invention is directed to methods for determining the relative amount of wrongly disulphide bridged TNFR2:Fc in a sample of TNFR2:Fc, a fusion protein which is used in a variety of therapeutic applications. In addition, the invention pertains to a method for purifying TNFR2:Fc using said method for determining the percentage of wrongly disulphide bridged TNFR2:Fc, and to TNFR2:Fc compositions obtained thereby.Type: GrantFiled: August 8, 2014Date of Patent: March 21, 2017Assignee: Sandoz AGInventors: Alfred Rupprechter, Michael Fuchs, Johann Holzmann, William Lamanna, Christoph Posch, Hansjorg Toll, Robert Mayer
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Publication number: 20160227135Abstract: The invention relates to pixel circuit and an operating method thereof, comprising a front-end circuit comprising a single photodiode and having an output, said front-end circuit being configured for delivering on said output a photoreceptor signal derived from a light exposure of said single photodiode; a transient detector circuit configured for detecting a change in said photoreceptor signal delivered on said output; an exposure measurement circuit configured for measuring said photoreceptor signal delivered on said output upon detection by the transient detector circuit of a change in the photoreceptor signal. The invention also relates to an image sensor comprising a plurality of pixel circuits.Type: ApplicationFiled: September 15, 2014Publication date: August 4, 2016Applicant: CHRONOCAMInventors: Daniel Matolin, Christoph Posch
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Patent number: 9182410Abstract: The present invention is directed to methods for determining the relative amount of wrongly disulphide bridged TNFR2:Fc in a sample of TNFR2:Fc, a fusion protein which is used in a variety of therapeutic applications. In addition, the invention pertains to a method for purifying TNFR2:Fc using said method for determining the percentage of wrongly disulphide bridged TNFR2:Fc, and to TNFR2:Fc compositions obtained thereby.Type: GrantFiled: October 17, 2014Date of Patent: November 10, 2015Assignee: Sandoz AGInventors: Alfred Rupprechter, Michael Fuchs, Johann Holzmann, William Lamanna, Christoph Posch, Hansjorg Toll, Robert Mayer
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Patent number: 8780240Abstract: A method for continuously generating a (grayscale) map of a scene in electronic form, characterized by high time resolution and minimal data volume, is presented. The method involves repeated measurement of the instantaneous exposure of the image elements in an image sensor, the start of every exposure measurement being determined autonomously and asynchronously by every image element independently, and hence the redundancy which is typical of synchronous image sensors in the image data to be transmitted being largely suppressed. The stimulation for the purpose of exposure measurement is provided by the autonomous detection of a relative light intensity change in the scene detail which the image element views, by the transient detector in the respective image element. To increase the signal-to-noise ratio and the dynamic range, the exposure measurement is preferably performed on the basis of time, that is to say the exposure of an image element is represented by the period between two asynchronous events.Type: GrantFiled: November 22, 2007Date of Patent: July 15, 2014Assignee: AIT Austrian Institute of Technology GmbHInventors: Christoph Posch, Martin Litzenberger, Daniel Matolin, Rainer Wohlgenannt
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Publication number: 20100182468Abstract: A method for continuously generating a (grayscale) map of a scene in electronic form, characterized by high time resolution and minimal data volume, is presented. The method involves repeated measurement of the instantaneous exposure of the image elements in an image sensor, the start of every exposure measurement being determined autonomously and asynchronously by every image element independently, and hence the redundancy which is typical of synchronous image sensors in the image data to be transmitted being largely suppressed. The stimulation for the purpose of exposure measurement is provided by the autonomous detection of a relative light intensity change in the scene detail which the image element views, by the transient detector in the respective image element. To increase the signal-to-noise ratio and the dynamic range, the exposure measurement is preferably performed on the basis of time, that is to say the exposure of an image element is represented by the period between two asynchronous events.Type: ApplicationFiled: November 22, 2007Publication date: July 22, 2010Inventors: Christoph Posch, Martin Litzenberger, Daniel Matolin, Rainer Wohlgenannt
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Publication number: 20080144961Abstract: A method is used for analyzing scenes. The scene or objects in the scene and an optical sensor perform a relative movement and the scene information obtained is evaluated. Visual information of the scene is detected by the individual pixels of the optical sensor and pixel co-ordinates of established variations in intensity are determined. A temporization of the established variations in intensity is determined and a local accumulation of the variations in intensity is determined by statistical methods. The local accumulations are evaluated in terms of the number and/or position thereof by statistical methods and data area clearing methods. The determined values are used as parameters of a detected scene region. A parameter is compared with a pre-determined parameter considered characteristic of an object, and when the pre-determined comparison criteria are fulfilled, the evaluated local amassment associated with the respective scene region is seen as an image of the object.Type: ApplicationFiled: December 17, 2007Publication date: June 19, 2008Applicant: AUSTRIAN RESEARCH CENTERS GMBH-ARCInventors: Martin Litzenberger, Bernhard Kohn, Peter Schon, Michael Hofstatter, Nikolaus Donath, Christoph Posch, Nenad Milosevic