Patents by Inventor Michael Kropfitsch
Michael Kropfitsch 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: 11635314Abstract: In accordance with an embodiment, a method for monitoring a data converter configured to convert data using a calibration determined by a calibration data record includes calibrating the data converter in order to determine a corresponding multiplicity of time associated calibration data records at a multiplicity of different times; and determining a state of the data converter based on comparing at least one of the multiplicity of time associated calibration data records with a comparison data record.Type: GrantFiled: May 29, 2019Date of Patent: April 25, 2023Assignee: Infineon Technologies AGInventors: Peter Bogner, Andrea Cristofoli, Michael Kropfitsch, Jochen O. Schrattenecker
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Patent number: 10924069Abstract: According to an embodiment, a method includes amplifying a signal provided by a capacitive signal source to form an amplified signal, detecting a peak voltage of the amplified signal, and adjusting a controllable impedance coupled to an output of the capacitive signal source in response to detecting the peak voltage. The controllable impedance is adjusted to a value inversely proportional to the detected peak voltage.Type: GrantFiled: October 26, 2018Date of Patent: February 16, 2021Assignee: INFINEON TECHNOLOGIES AGInventors: Michael Kropfitsch, Jose Luis Ceballos
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Patent number: 10855095Abstract: A method is disclosed, which includes driving an alternating input current into a battery, measuring a voltage across the battery by a first measurement circuit to obtain a voltage measurement value, measuring a current through the battery by a second measurement circuit to obtain a current measurement value, and measuring a current through the battery using the first measurement circuit to obtain a further current measurement value. Further, the method includes calculating an impedance of the battery based on the current measurement value, the further current measurement value, and the voltage measurement value.Type: GrantFiled: October 12, 2017Date of Patent: December 1, 2020Assignee: Infineon Technologies AGInventors: Stefano Marsili, Michael Kropfitsch
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Patent number: 10771087Abstract: In accordance with an embodiment, a method of monitoring a data converter includes determining a multiplicity of time-associated linearity parameters that describe a linearity of the data converter at a multiplicity of different times, and determining a state of the data converter based on comparing at least one linearity parameter of the multiplicity of time-associated linearity parameters with a comparison parameter.Type: GrantFiled: May 29, 2019Date of Patent: September 8, 2020Assignee: INFINEON TECHNOLOGIES AGInventors: Jochen O. Schrattenecker, Peter Bogner, Andrea Cristofoli, Michael Kropfitsch
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Patent number: 10761186Abstract: A radar device comprises a test signal generator including a digital harmonic oscillator that generates a digital oscillator signal with a first spectral component; a first digital-to-analog-converter that generates an analog oscillator signal based on the digital oscillator signal. Furthermore, the radar device comprises at least one radar channel receiving the analog oscillator signal during one or more self-tests.Type: GrantFiled: December 7, 2017Date of Patent: September 1, 2020Assignee: Infineon Technologies AGInventors: Jochen O. Schrattenecker, Florian Starzer, Oliver Frank, Michael Kropfitsch, Georg Krebelder, Helmut Kollmann, Thomas Sailer
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Publication number: 20190386673Abstract: In accordance with an embodiment, a method of monitoring a data converter includes determining a multiplicity of time-associated linearity parameters that describe a linearity of the data converter at a multiplicity of different times, and determining a state of the data converter based on comparing at least one linearity parameter of the multiplicity of time-associated linearity parameters with a comparison parameter.Type: ApplicationFiled: May 29, 2019Publication date: December 19, 2019Inventors: Jochen O. Schrattenecker, Peter Bogner, Andrea Cristofoli, Michael Kropfitsch
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Publication number: 20190383651Abstract: In accordance with an embodiment, a method for monitoring a data converter configured to convert data using a calibration determined by a calibration data record includes calibrating the data converter in order to determine a corresponding multiplicity of time associated calibration data records at a multiplicity of different times; and determining a state of the data converter based on comparing at least one of the multiplicity of time associated calibration data records with a comparison data record.Type: ApplicationFiled: May 29, 2019Publication date: December 19, 2019Inventors: Peter Bogner, Andrea Cristofoli, Michael Kropfitsch, Jochen O. Schrattenecker
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Patent number: 10476483Abstract: Filters are discussed where a first window function and a second window function are applied to a digital input signal, wherein a window length of the first window function is longer than a window length of the second window function. The results of this windowing are integrated.Type: GrantFiled: November 9, 2017Date of Patent: November 12, 2019Assignee: INFINEON TECHNOLOGIES AGInventors: Dietmar Straeussnigg, Peter Bogner, Michael Kropfitsch, Jens Barrenscheen
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Publication number: 20190140625Abstract: Filters are discussed where a first window function and a second window function are applied to a digital input signal, wherein a window length of the first window function is longer than a window length of the second window function. The results of this windowing are integrated.Type: ApplicationFiled: November 9, 2017Publication date: May 9, 2019Inventors: Dietmar STRAEUSSNIGG, Peter BOGNER, Michael KROPFITSCH, Jens BARRENSCHEEN
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Patent number: 10278084Abstract: A radar sensor includes a mixer configured to receive an radio frequency (RF) input signal to down-convert the RF input signal into a base-band or intermediate frequency (IF) band, an analog-to-digital converter (ADC), and a signal processing chain coupled between the mixer and the ADC. The radar sensor further includes an oscillator circuit that is configured to generate a test signal. The ADC is coupled to an output of the signal processing chain, and is configured to generate a digital signal by digitizing an output signal of the signal processing chain, the output signal being derived from the test signal. The radar sensor further includes a digital signal processing circuit coupled to the ADC downstream thereof, the digital signal processing circuit being configured to perform a spectral analysis on frequency values of the digital signal.Type: GrantFiled: July 13, 2018Date of Patent: April 30, 2019Assignee: Infineon Technologies AGInventors: Florian Starzer, Peter Bogner, Oliver Frank, Guenter Haider, Michael Kropfitsch, Thomas Sailer, Jochen O. Schrattenecker, Rainer Stuhlberger
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Publication number: 20190115762Abstract: A method is disclosed, which includes driving an alternating input current into a battery, measuring a voltage across the battery by a first measurement circuit to obtain a voltage measurement value, measuring a current through the battery by a second measurement circuit to obtain a current measurement value, and measuring a current through the battery using the first measurement circuit to obtain a further current measurement value. Further, the method includes calculating an impedance of the battery based on the current measurement value, the further current measurement value, and the voltage measurement value.Type: ApplicationFiled: October 12, 2017Publication date: April 18, 2019Inventors: Stefano Marsili, Michael Kropfitsch
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Publication number: 20190068139Abstract: According to an embodiment, a method includes amplifying a signal provided by a capacitive signal source to form an amplified signal, detecting a peak voltage of the amplified signal, and adjusting a controllable impedance coupled to an output of the capacitive signal source in response to detecting the peak voltage. The controllable impedance is adjusted to a value inversely proportional to the detected peak voltage.Type: ApplicationFiled: October 26, 2018Publication date: February 28, 2019Inventors: Michael Kropfitsch, Jose Luis Ceballos
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Patent number: 10171046Abstract: According to an embodiment, a method includes amplifying a signal provided by a capacitive signal source to form an amplified signal, detecting a peak voltage of the amplified signal, and adjusting a controllable impedance coupled to an output of the capacitive signal source in response to detecting the peak voltage. The controllable impedance is adjusted to a value inversely proportional to the detected peak voltage.Type: GrantFiled: November 6, 2015Date of Patent: January 1, 2019Assignee: INFINEON TECHNOLOGIES AGInventors: Michael Kropfitsch, Jose Luis Ceballos
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Publication number: 20180332488Abstract: A radar sensor includes a mixer configured to receive an radio frequency (RF) input signal to down-convert the RF input signal into a base-band or intermediate frequency (IF) band, an analog-to-digital converter (ADC), and a signal processing chain coupled between the mixer and the ADC. The radar sensor further includes an oscillator circuit that is configured to generate a test signal. The ADC is coupled to an output of the signal processing chain, and is configured to generate a digital signal by digitizing an output signal of the signal processing chain, the output signal being derived from the test signal. The radar sensor further includes a digital signal processing circuit coupled to the ADC downstream thereof, the digital signal processing circuit being configured to perform a spectral analysis on frequency values of the digital signal.Type: ApplicationFiled: July 13, 2018Publication date: November 15, 2018Applicant: Infineon Technologies AGInventors: Florian STARZER, Peter BOGNER, Oliver FRANK, Guenter HAIDER, Michael KROPFITSCH, Thomas SAILER, Jochen O. SCHRATTENECKER, Rainer STUHLBERGER
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Patent number: 10057795Abstract: A radio frequency (RF) receive circuit is described herein. In accordance with one embodiment, the RF receive circuit includes a mixer configured to receive an RF input signal to down-convert the RF input signal into a base-band or intermediate frequency (IF) band, an analog-to-digital converter (ADC), and a signal processing chain coupled between the mixer and the ADC. The signal processing chain includes at least two circuit nodes. The RF receive circuit further includes an oscillator circuit that is configured to generate a test signal. The oscillator circuit is coupled to the signal processing chain and is configured to selectively feed the oscillator signal into one of the at least two circuit nodes.Type: GrantFiled: June 1, 2017Date of Patent: August 21, 2018Assignee: Infineon Technologies AGInventors: Florian Starzer, Peter Bogner, Oliver Frank, Guenter Haider, Michael Kropfitsch, Thomas Sailer, Jochen O. Schrattenecker, Rainer Stuhlberger
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Patent number: 10044368Abstract: A sigma delta analog to digital converter for converting an analog input into a digital output comprises a reference path for receiving a reference voltage. The reference path comprises a digital to analog converter. The digital to analog converter comprises a reference voltage input for receiving the reference voltage, wherein the reference voltage input comprises two contacts and wherein each contact is a beginning of a voltage line of two voltage lines. The digital to analog converter comprises a plurality of switches and a plurality of capacitors. The switches of the plurality of switches are configured to connect the digital to analog converter in a sampling phase with the reference voltage and to disconnect the digital to analog converter in an integrating phase from the reference voltage.Type: GrantFiled: September 26, 2017Date of Patent: August 7, 2018Assignee: Infineon Technologies AGInventors: Michael Kropfitsch, Massimo Rigo
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Patent number: 10027298Abstract: In accordance with an embodiment, a system for amplifying a signal provided by a capacitive signal source includes an impedance converter having an input node configured to be coupled to a first terminal of the capacitive signal source, and an adjustable capacitive network having a first node configured to be coupled to a second terminal of the capacitive signal source and a second node coupled to an output node of the impedance converter.Type: GrantFiled: November 30, 2015Date of Patent: July 17, 2018Assignee: INFINEON TECHNOLOGIES AGInventors: Michael Kropfitsch, Andreas Wiesbauer
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Patent number: 10015609Abstract: System and method for detecting a glitch is disclosed. An embodiment comprises increasing a bias voltage of a first capacitor, sampling an input signal of a first plate of the first capacitor with a time period, mixing the input signal with the sampled input signal, and comparing the mixed signal with a reference signal.Type: GrantFiled: June 5, 2017Date of Patent: July 3, 2018Assignee: INFINEON TECHNOLOGIES AGInventors: Michael Kropfitsch, Jose Luis Ceballos
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Publication number: 20180172801Abstract: A radar device comprises a test signal generator including a digital harmonic oscillator that generates a digital oscillator signal with a first spectral component; a first digital-to-analog-converter that generates an analog oscillator signal based on the digital oscillator signal. Furthermore, the radar device comprises at least one radar channel receiving the analog oscillator signal during one or more self-tests.Type: ApplicationFiled: December 7, 2017Publication date: June 21, 2018Inventors: Jochen O. SCHRATTENECKER, Florian STARZER, Oliver FRANK, Michael KROPFITSCH, Georg KREBELDER, Helmut KOLLMANN, Thomas SAILER
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Publication number: 20180115321Abstract: A sigma delta analog to digital converter for converting an analog input into a digital output comprises a reference path for receiving a reference voltage. The reference path comprises a digital to analog converter. The digital to analog converter comprises a reference voltage input for receiving the reference voltage, wherein the reference voltage input comprises two contacts and wherein each contact is a beginning of a voltage line of two voltage lines. The digital to analog converter comprises a plurality of switches and a plurality of capacitors. The switches of the plurality of switches are configured to connect the digital to analog converter in a sampling phase with the reference voltage and to disconnect the digital to analog converter in an integrating phase from the reference voltage.Type: ApplicationFiled: September 26, 2017Publication date: April 26, 2018Inventors: Michael Kropfitsch, Massimo Rigo