Patents by Inventor Patrick Riehl
Patrick Riehl 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: 11934524Abstract: Herein disclosed are approaches for protecting sensitive information within a fingerprint authentication system that can be snooped and utilized to access the device, secured information, or a secured application. The approaches can utilize encryption keys and hash functions that are unique to the device in which the fingerprint authentication is being performed to protect the sensitive information that can be snooped.Type: GrantFiled: June 19, 2020Date of Patent: March 19, 2024Assignee: Analog Devices, Inc.Inventors: Patrick Riehl, Tze Lei Poo
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Publication number: 20230367025Abstract: One embodiment is a baseline restoration (“BLR”) circuit for a photo-counting computed tomography (“PCCT”) signal chain, the BLR circuit comprising a comparator for comparing a shaper voltage output from a shaper component of the PCCT signal chain with a baseline voltage, the comparator outputting a single bit indicative of whether the shaper voltage is above or below the baseline voltage; a low pass filter connected to filter a voltage signal output from the comparator; and a transconductor connected to receive a filtered voltage signal output from the low pass filter, convert the filtered voltage signal to a current signal, and feed the current signal back to an input of the PCCT signal chain.Type: ApplicationFiled: August 6, 2021Publication date: November 16, 2023Applicant: Analog Devices, Inc.Inventor: Patrick RIEHL
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Publication number: 20230297679Abstract: Herein disclosed are approaches for protecting sensitive information within a fingerprint authentication system that can be snooped and utilized to access the device, secured information, or a secured application. The approaches can utilize encryption keys and hash functions that are unique to the device in which the fingerprint authentication is being performed to protect the sensitive information that can be snooped.Type: ApplicationFiled: May 26, 2023Publication date: September 21, 2023Inventors: Patrick RIEHL, Tze Lei Poo
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Publication number: 20220224153Abstract: A contactless charging system for smart garments having coils whose centroids are not colinear. Folding a coil in half through its centroid will null out its inductance. A smart garment having 3 coils that have centroids that are not colinear is proposed. Accordingly, there is no single folding line that intersects all 3 centroids thereby nullifying inductance. Power can be combined with one or more rectifiers such that power is not cancelled. The present disclosure is suitable for any charging environment or apparatus, such as, drawer or hanger.Type: ApplicationFiled: January 14, 2022Publication date: July 14, 2022Applicants: Analog Devices, Inc., UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: Patrick RIEHL, Chin-Wei CHANG, Jenshan LIN
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Publication number: 20220200351Abstract: A contactless charging drawer for smart garments using magnetic coupling links. A frame with a primary coil creates a magnetic field which couples with a secondary coil disposed a drawer. Smart garments, or any device, can then be safely charged in the drawer. The combination provides for a wireless power charging environment while adding an extra degree of freedom in impedance transformation without the need for electrical contacts to the drawer.Type: ApplicationFiled: December 20, 2021Publication date: June 23, 2022Applicants: Analog Devices, Inc., UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: Patrick RIEHL, Chin-Wei CHANG
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Publication number: 20220124373Abstract: There is disclosed herein examples of systems and methods for compressing a signal. Samples of the signal can be segmented and the samples within each of the segments can be averaged to produce a value that can represent the samples within the segment. The number of samples to average in each segment may be determined based on an error threshold, such that the number of samples being averaged can be maximized to produce less data to be transmitted while maintaining the representation of the samples within the error threshold. In some embodiments, a signal can be separated into a timing reference, a representative periodic function, and a highly compressible error signal. The error signal can be utilized for reproducing a representation of the signal.Type: ApplicationFiled: December 30, 2021Publication date: April 21, 2022Applicant: Analog Devices, Inc.Inventors: Patrick RIEHL, Tony J. AKL, Venugopal GOPINATHAN, Hyung Sung YOON
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Patent number: 11219397Abstract: A sensor module for a wearable vital sign monitoring device is disclosed. The sensor module includes a substrate having a first side and a second side opposite the first side. The sensor module also includes a sensor die mounted to the first side of the substrate. The sensor die is configured to monitor a vital sign of a user. The sensor module further includes a waterproof coating that conformally covers the sensor die, at least a portion of the first side of the substrate, and at least a portion of the second side of the substrate.Type: GrantFiled: June 14, 2018Date of Patent: January 11, 2022Assignee: Analog Devices, Inc.Inventors: Weidong Wang, David Frank Bolognia, Michelle A. Farrington, Roberto Munoz, Michael Alan Falter, Patrick Riehl
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Patent number: 11218734Abstract: There is disclosed herein examples of systems and methods for compressing a signal. Samples of the signal can be segmented and the samples within each of the segments can be averaged to produce a value that can represent the samples within the segment. The number of samples to average in each segment may be determined based on an error threshold, such that the number of samples being averaged can be maximized to produce less data to be transmitted while maintaining the representation of the samples within the error threshold. In some embodiments, a signal can be separated into a timing reference, a representative periodic function, and a highly compressible error signal. The error signal can be utilized for reproducing a representation of the signal.Type: GrantFiled: February 11, 2020Date of Patent: January 4, 2022Assignee: ANALOG DEVICES, INC.Inventors: Patrick Riehl, Tony J. Akl, Venugopal Gopinathan, Hyung Sung Yoon
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Patent number: 11176347Abstract: Systems and methods described herein relate to fingerprint-on-display recognition. In particular, the systems and methods described herein may recognize a fingerprint when a finger of a user is placed on a display and authenticate the user based on the recognized fingerprint. Further, the embodiments described herein may utilize multiple colors and/or secondary factors to reduce erroneous authentications of the user. The approaches may improve the accuracy of fingerprint authentication by using the multiple colors and/or secondary factors.Type: GrantFiled: June 12, 2020Date of Patent: November 16, 2021Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANYInventors: Patrick Riehl, Gary Carreau, Richard J. Capistran, Kenneth M. Feen, Brian Jeffrey Wengreen
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Patent number: 10978908Abstract: Various examples are provided for wireless power charging for versatile receiver positions. In one example, a three dimensional array of transmitter coils is positioned around a charging area. A control circuit causes the array of transmitter coils to generate a magnetic field that charges a device with any position and orientation in the charging area.Type: GrantFiled: February 10, 2017Date of Patent: April 13, 2021Assignees: University of Florida Research Foundation, Inc., Mediatek Singapore PTE. LTD.Inventors: Patrick Riehl, Jenshan Lin, Ron-Chi Kuo
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Publication number: 20200401699Abstract: Herein disclosed are approaches for protecting sensitive information within a fingerprint authentication system that can be snooped and utilized to access the device, secured information, or a secured application. The approaches can utilize encryption keys and hash functions that are unique to the device in which the fingerprint authentication is being performed to protect the sensitive information that can be snooped.Type: ApplicationFiled: June 19, 2020Publication date: December 24, 2020Applicant: Analog Devices, Inc.Inventors: Patrick RIEHL, Tze Lei POO
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Publication number: 20200394378Abstract: Systems and methods described herein relate to fingerprint-on-display recognition. In particular, the systems and methods described herein may recognize a fingerprint when a finger of a user is placed on a display and authenticate the user based on the recognized fingerprint. Further, the embodiments described herein may utilize multiple colors and/or secondary factors to reduce erroneous authentications of the user. The approaches may improve the accuracy of fingerprint authentication by using the multiple colors and/or secondary factors.Type: ApplicationFiled: June 12, 2020Publication date: December 17, 2020Applicant: Analog Devices International Unlimited CompanyInventors: Patrick Riehl, Gary Carreau, Richard J. Capistran, Kenneth M. Feen, Brian Jeffrey Wengreen
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Publication number: 20200260118Abstract: There is disclosed herein examples of systems and methods for compressing a signal. Samples of the signal can be segmented and the samples within each of the segments can be averaged to produce a value that can represent the samples within the segment. The number of samples to average in each segment may be determined based on an error threshold, such that the number of samples being averaged can be maximized to produce less data to be transmitted while maintaining the representation of the samples within the error threshold. In some embodiments, a signal can be separated into a timing reference, a representative periodic function, and a highly compressible error signal. The error signal can be utilized for reproducing a representation of the signal.Type: ApplicationFiled: February 11, 2020Publication date: August 13, 2020Applicant: Analog Devices, Inc.Inventors: Patrick RIEHL, Tony J. AKL, Venugopal GOPINATHAN, Hyung Sung YOON
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Publication number: 20190052124Abstract: Various examples are provided for wireless power charging for versatile receiver positions. In one example, a three dimensional array of transmitter coils is positioned around a charging area. A control circuit causes the array of transmitter coils to generate a magnetic field that charges a device with any position and orientation in the charging area.Type: ApplicationFiled: February 10, 2017Publication date: February 14, 2019Inventors: Patrick RIEHL, Jenshan LIN, Ron-Chi KUO
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Publication number: 20180360341Abstract: A sensor module for a wearable vital sign monitoring device is disclosed. The sensor module includes a substrate having a first side and a second side opposite the first side. The sensor module also includes a sensor die mounted to the first side of the substrate. The sensor die is configured to monitor a vital sign of a user. The sensor module further includes a waterproof coating that conformally covers the sensor die, at least a portion of the first side of the substrate, and at least a portion of the second side of the substrate.Type: ApplicationFiled: June 14, 2018Publication date: December 20, 2018Inventors: Weidong Wang, David Frank Bolognia, Michelle A. Farrington, Roberto Munoz, Michael Alan Falter, Patrick Riehl
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Patent number: 7388356Abstract: A voltage regulator system is disclosed for use in selectively regulating a voltage source at a first output voltage potential and a second output voltage potential. The voltage regulator system includes a reference unit, a filter unit and a current source unit. The reference unit is for receiving a voltage reference input signal that is representative of a request for an output reference voltage signal to change. The filter unit is for providing a change in the output voltage over a predetermined period of time. The current source unit is for providing one of a positive or negative current source to an output node at which the output reference voltage is provided.Type: GrantFiled: November 8, 2005Date of Patent: June 17, 2008Assignee: Mediatek, Inc.Inventor: Patrick Riehl
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Publication number: 20070046273Abstract: A voltage switching regulator includes a pulsewidth modulation (PWM) controller providing voltage regulation when the voltage switching regulator is experiencing being in an high-power mode. A pulse-frequency modulation (PFM) controller provides voltage regulation when the voltage switching regulator is experiencing being in a low-power mode. An error-voltage estimator enables switching between the low-power mode and the high-power mode while keeping the voltage switching regulator output in regulation between the desired minimum and maximum voltages.Type: ApplicationFiled: August 18, 2006Publication date: March 1, 2007Inventor: Patrick Riehl
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Publication number: 20060113977Abstract: A voltage regulator system is disclosed for use in selectively regulating a voltage source at a first output voltage potential and a second output voltage potential. The voltage regulator system includes a reference unit, a filter unit and a current source unit. The reference unit is for receiving a voltage reference input signal that is representative of a request for an output reference voltage signal to change. The filter unit is for providing a change in the output voltage over a predetermined period of time. The current source unit is for providing one of a positive or negative current source to an output node at which the output reference voltage is provided.Type: ApplicationFiled: November 8, 2005Publication date: June 1, 2006Inventor: Patrick Riehl