Patents by Inventor Kurt RIEDMUELLER
Kurt RIEDMUELLER 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: 11073408Abstract: A rotary sensor arrangement is configured to be used with a rotatable magnetic source and comprises a first and a second pair of magnetic field sensors, each pair arranged symmetrically with respect to rotation axes and providing respective sensor values. An evaluation unit determines a first sum value corresponding to a sum of the sensor values of the first pair, and a second sum value corresponding to a sum of the sensor values of the second pair. The evaluation unit further determines a difference value corresponding to a difference between the first and the second sum value and compares the difference value or a value derived thereof to a threshold value. Based on the comparison result, it is determined whether a failure status of the sensor arrangement is present.Type: GrantFiled: October 11, 2017Date of Patent: July 27, 2021Assignee: AMS AGInventors: Kurt Riedmueller, Simone Sabatelli
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Publication number: 20190310113Abstract: A rotary sensor arrangement is configured to be used with a rotatable magnetic source and comprises a first and a second pair of magnetic field sensors, each pair arranged symmetrically with respect to rotation axes and providing respective sensor values. An evaluation unit determines a first sum value corresponding to a sum of the sensor values of the first pair, and a second sum value corresponding to a sum of the sensor values of the second pair. The evaluation unit further determines a difference value corresponding to a difference between the first and the second sum value and compares the difference value or a value derived thereof to a threshold value. Based on the comparison result, it is determined whether a failure status of the sensor arrangement is present.Type: ApplicationFiled: October 11, 2017Publication date: October 10, 2019Inventors: Kurt Riedmueller, Simone Sabatelli
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Patent number: 10429208Abstract: A position sensor device comprises at least two Hall elements (11, 12) and a signal evaluation circuit (14) that is coupled on its input side to the at least two Hall elements (11, 12) and is designed to provide a digital position signal (ANS). Moreover, the position sensor device (10) comprises a processing unit (15) comprising a loop filter (16) that is coupled on its input side to the signal evaluation unit (14). The processing unit (15) is designed to adaptively control a filter parameter of the loop filter (16) during operation.Type: GrantFiled: January 13, 2017Date of Patent: October 1, 2019Assignee: ams AGInventors: Kurt Riedmueller, Gerhard Oberhoffner, Dominik Ruck, Stephan Michelitsch
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Patent number: 9952065Abstract: A position sensor device to determine a position of a moving device comprises a detection unit to detect a signal generated by the moving device and an evaluation unit to determine a first position (?0(t1)) specifying the position of the moving device at a first time (t1). An error distance determination unit determines a velocity of the movement of the moving device and at least one error distance (?err1, ?err2, ?err3) specifying a distance by which the moving device moves on between the first time (t1) and a second time (t2) in dependence on the velocity and a propagation delay time (Tpd). A position correction unit is configured to determine a corrected position (?corr) in dependence on the at least one error distance (?err1, ?err2, ?err3) and the first position (?0(t1)).Type: GrantFiled: July 30, 2014Date of Patent: April 24, 2018Assignee: AMS AGInventors: Ruggero Leoncavallo, Kurt Riedmueller
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Publication number: 20170131119Abstract: A position sensor device comprises at least two Hall elements (11, 12) and a signal evaluation circuit (14) that is coupled on its input side to the at least two Hall elements (11, 12) and is designed to provide a digital position signal (ANS). Moreover, the position sensor device (10) comprises a processing unit (15) comprising a loop filter (16) that is coupled on its input side to the signal evaluation unit (14). The processing unit (15) is designed to adaptively control a filter parameter of the loop filter (16) during operation.Type: ApplicationFiled: January 13, 2017Publication date: May 11, 2017Inventors: Kurt RIEDMUELLER, Gerhard OBERHOFFNER, Dominik RUCK, Stephan MICHELITSCH
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Publication number: 20160202089Abstract: A position sensor device to determine a position of a moving device comprises a detection unit to detect a signal generated by the moving device and an evaluation unit to determine a first position (?0(t1) specifying the position of the moving device at a first time (t1). An error distance determination unit determines a velocity of the movement of the moving device and at least one error distance (?err1, ?err2, ?err3) specifying a distance by which the moving device moves on between the first time (t1) and a second time (t2) in dependence on the velocity and a propagation delay time (Tpd). A position correction unit is configured to determine a corrected position (?corr) in dependence on the at least one error distance (?err1, ?err2, ?err3) and the first position (?0(t1)).Type: ApplicationFiled: July 30, 2014Publication date: July 14, 2016Inventors: Ruggero LEONCAVALLO, Kurt RIEDMUELLER
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Patent number: 9366547Abstract: A sensor arrangement has a plurality of Hall sensor devices, each configured to provide a sensor voltage in response to a magnetic field intensity. A selection unit is configured to forward either of the sensor voltages in response to a selection signal. A transconductance amplifier is configured to generate a sensing current depending on a forwarded sensor voltage. A filter stage has a resistor and a filter capacitor connected in parallel in a switchable manner in response to a first switching signal. The filter stage is configured to generate a filtered voltage across the filter capacitor depending on a sensing current. A capacitive analog-to-digital converter has an input capacitor being connected to the filter capacitor in a switchable manner in response to a second switching signal. The analog-to-digital converter is configured to generate a digital sensor value based on a filtered voltage.Type: GrantFiled: December 7, 2009Date of Patent: June 14, 2016Assignee: ams AGInventors: Richard Forsyth, Gerhard Oberhoffner, Kurt Riedmüller, Davide Maschera
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Patent number: 9217652Abstract: A sensor arrangement comprises at least one magnetic-field sensor (SM1). A signal-processing unit (PROC) is set up to determine a minimum signal (MIN) and a maximum signal (MAX) of the magnetic-field sensor (SM1) over the full scale range (FSR) of the sensor arrangement. An adjustment circuit (DSPL) is set up to generate a correction signal (COR) as a function of the minimum and maximum signals (MIN, MAX). A first combination means (ADD1) couples the first magnetic-field sensor (SM1) on the input side to the adjustment circuit (DSPL) and connects the magnetic-field sensor (SM1) on the output side to a signal output (OUT).Type: GrantFiled: May 5, 2011Date of Patent: December 22, 2015Assignee: AMS AGInventors: Kurt Riedmueller, Thomas Oswald
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Patent number: 9212934Abstract: A sensor arrangement comprises at least a first magnetic-field sensor (SM1) and a second magnetic-field sensor (SM2). A signal-processing unit (PROC) is set up to determine a minimum signal (MIN) and a maximum signal (MAX) of the first or second magnetic-field sensor (SM1, SM2) in the full scale range (FSR) of the sensor arrangement The first or second magnetic-field sensor (SM1, SM2) can be selected by means of a selection means (MOV) depending on the minimum and maximum signal (MIN, MAX).Type: GrantFiled: May 5, 2011Date of Patent: December 15, 2015Assignee: AMS AGInventors: Kurt Riedmueller, Thomas Oswald
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Patent number: 8823371Abstract: A sensor arrangement comprises a first, a second and a third magnetic field sensor that are arranged along a curved principal direction. A first combination means is connected to the first and second magnetic field sensors and a first channel signal can be derived from the signals of the first and second magnetic field sensors by the first combination means. A second combination means is connected to the first, second and third magnetic field sensors (SM1, SWM2, SM3. A second channel signal is derived by the second combination means from signals of the first, second and third magnetic field sensors. An evaluation unit that is connected to the first and second combination means is set up to derive an end position of a magnetic source movable relative to the sensor arrangement as a function of the first and second channel signals.Type: GrantFiled: March 16, 2011Date of Patent: September 2, 2014Assignee: AMS AGInventors: Kurt Riedmueller, Josef Janisch
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Patent number: 8089275Abstract: A sensor arrangement has a sensor array (SA) with a first, a second, and a third sensor focus (SSP1, SSP2, SSP3), which are located along a main linear direction (L) and in which the third sensor focus (SSP3) is located in the middle between the first and second sensor foci (SSP1, SSP2). Individual sensor devices (SM1, SM2, SM3) with magnetic field sensors that provide a first, second, and third set of sensor signals are correlated with the sensor foci (SSP1, SSP2, SSP3). A first and a second channel signal (CH1, CH2) are derived as a function of the sets of sensor signals in a processing device (PRC) via a first and a second combination device (K1, K2). An evaluation unit (EV) is configured to derive a phase angle as a function of the channel signals (CH1, CH2).Type: GrantFiled: March 19, 2009Date of Patent: January 3, 2012Assignee: austriamicrosystem AGInventor: Kurt Riedmüller
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Publication number: 20110273172Abstract: A sensor arrangement comprises at least a first magnetic-field sensor (SM1) and a second magnetic-field sensor (SM2). A signal-processing unit (PROC) is set up to determine a minimum signal (MIN) and a maximum signal (MAX) of the first or second magnetic-field sensor (SM1, SM2) in the full scale range (FSR) of the sensor arrangement The first or second magnetic-field sensor (SM1, SM2) can be selected by means of a selection means (MOV) depending on the minimum and maximum signal (MIN, MAX).Type: ApplicationFiled: May 5, 2011Publication date: November 10, 2011Applicant: austriamicrosystems AGInventors: Kurt RIEDMUELLER, Thomas OSWALD
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Publication number: 20110273173Abstract: A sensor arrangement comprises at least one magnetic-field sensor (SM1). A signal-processing unit (PROC) is set up to determine a minimum signal (MIN) and a maximum signal (MAX) of the magnetic-field sensor (SM1) over the full scale range (FSR) of the sensor arrangement. An adjustment circuit (DSPL) is set up to generate a correction signal (COR) as a function of the minimum and maximum signals (MIN, MAX). A first combination means (ADD1) couples the first magnetic-field sensor (SM1) on the input side to the adjustment circuit (DSPL) and connects the magnetic-field sensor (SM1) on the output side to a signal output (OUT).Type: ApplicationFiled: May 5, 2011Publication date: November 10, 2011Applicant: austriamicrosystems AGInventors: Kurt RIEDMUELLER, Thomas OSWALD
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Publication number: 20110133723Abstract: A sensor arrangement has a plurality of Hall sensor devices, each configured to provide a sensor voltage in response to a magnetic field intensity. A selection unit is configured to forward either of the sensor voltages in response to a selection signal. A transconductance amplifier is configured to generate a sensing current depending on a forwarded sensor voltage. A filter stage has a resistor and a filter capacitor connected in parallel in a switchable manner in response to a first switching signal. The filter stage is configured to generate a filtered voltage across the filter capacitor depending on a sensing current. A capacitive analog-to-digital converter has an input capacitor being connected to the filter capacitor in a switchable manner in response to a second switching signal. The analog-to-digital converter is configured to generate a digital sensor value based on a filtered voltage.Type: ApplicationFiled: December 7, 2009Publication date: June 9, 2011Applicant: austriamicrosystems AGInventors: Richard FORSYTH, Gerhard Oberhoffner, Kurt Riedmüller, Davide Maschera