Patents by Inventor Igor Tchertkov
Igor Tchertkov 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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Publication number: 20240085185Abstract: Embodiments are disclosed for submersion detection and underwater depth and low-latency temperature estimation. In an embodiment, a method comprises: determining a first set of vertical accelerations obtained from an inertial sensor of a wearable device; determining a second set of vertical accelerations obtained from pressure data; determining a first feature associated with a correlation between the first and second sets of vertical accelerations; and determining that the wearable device is submerged or not submerged in water based on a machine learning model applied to the first feature. In another embodiment, a method comprises: determining a submersion state of a wearable device; and responsive to the submersion state being submerged, computing a forward estimate of water temperature based on measured ambient water temperature at the water surface, a temperature error lookup table, and a rate of change of the ambient water temperature.Type: ApplicationFiled: September 6, 2023Publication date: March 14, 2024Inventors: Stephen P. Jackson, Ti-Yen Lan, Yi Wen Liao, Alexandru Popovici, Igor Tchertkov, Rose M. Wahlin, Natisa Jeyakanthan, Amit K. Jain, Kenneth M. Lee
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Patent number: 10850973Abstract: A Microelectromechanical systems (MEMS) structure comprises a MEMS wafer. A MEMS wafer includes a handle wafer with cavities bonded to a device wafer through a dielectric layer disposed between the handle and device wafers. The MEMS wafer also includes a moveable portion of the device wafer suspended over a cavity in the handle wafer. Four methods are described to create two or more enclosures having multiple gas pressure or compositions on a single substrate including, each enclosure containing a moveable portion. The methods include: A. Forming a secondary sealed enclosure, B. Creating multiple ambient enclosures during wafer bonding, C. Creating and breaching an internal gas reservoir, and D. Forming and subsequently sealing a controlled leak/breach into the enclosure.Type: GrantFiled: November 27, 2019Date of Patent: December 1, 2020Assignee: INVENSENSE, INC.Inventors: Michael Daneman, Martin Lim, Kegang Huang, Igor Tchertkov
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Patent number: 10743777Abstract: Disclosed embodiments pertain to cardiovascular parameter (e.g. heart rate) measurements when motion is present. Biometric sensor signal measurements may be obtained based on cardiovascular parameters of a user; and motion sensor signal measurements may be obtained based on user motion. An activity type may be determined based on the motion sensor signals. For example, when non-motion related frequencies in a frequency domain representation of the biometric sensor signal are obscured by user motion, an activity type may be determined based on the motion sensor signals. Further, based on the activity type, for each cardiovascular parameter (e.g. heart rate), a corresponding likely cardiovascular parameter value (e.g. a likely heart rate) may be determined. A corresponding fundamental frequency associated with the biometric sensor signal may then be determined for each cardiovascular parameter based on the motion sensor signal measurements and the corresponding likely cardiovascular parameter value.Type: GrantFiled: March 13, 2017Date of Patent: August 18, 2020Assignee: QUALCOMM IncorporatedInventors: Russel Martin, Shashank Narayanan, Hithesh Reddivari, Vidyut Naware, Igor Tchertkov, Joseph Czompo
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Patent number: 10667705Abstract: Methods, systems, computer-readable media, and apparatuses for obtaining blood pressure measurements are presented. The blood pressure measurements may be obtained by determining a pulse-transit time (PTT) as a function of a photoplethysmography (PPG) measurement and electrocardiogram (ECG) measurement. A mobile device includes outer body sized to be portable for a user of the mobile device. The mobile device also includes a plurality of light emitting components distributed along at least one portion of the mobile device and a plurality of light collecting components configured to measure reflected light from the plurality of light emitting components reflected off of blood vessels within the user. The light emitting and light collecting components are distributed along the at least one portion of the mobile device. The mobile device may also include a light guide configured to direct light emitted by the at least one light emitting component toward blood vessels with the user.Type: GrantFiled: September 23, 2015Date of Patent: June 2, 2020Assignee: QUALCOMM IncorporatedInventors: Igor Tchertkov, Evgeni Yurij Poliakov, Russell Wayne Gruhlke, Russel Allyn Martin, Evgeni Petrovich Gousev, Muhammed Ibrahim Sezan
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Patent number: 10667706Abstract: Methods, systems, computer-readable media, and apparatuses for obtaining blood pressure measurements are presented. The blood pressure measurements may be obtained by determining a pulse-transit time (PTT) as a function of a photoplethysmography (PPG) measurement and electrocardiogram (ECG) measurement. A mobile device includes outer body sized to be portable for a user of the mobile device. The mobile device also includes a plurality of light emitting components distributed along at least one portion of the mobile device and a plurality of light collecting components configured to measure reflected light from the plurality of light emitting components reflected off of blood vessels within the user. The light emitting and light collecting components are distributed along the at least one portion of the mobile device. The mobile device may also include a light guide configured to direct light emitted by the at least one light emitting component toward blood vessels with the user.Type: GrantFiled: September 23, 2015Date of Patent: June 2, 2020Assignee: QUALCOMM IncorporatedInventors: Igor Tchertkov, Evgeni Yurij Poliakov, Russell Wayne Gruhlke, Russel Allyn Martin, Evgeni Petrovich Gousev, Muhammed Ibrahim Sezan
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Publication number: 20200109045Abstract: A Microelectromechanical systems (MEMS) structure comprises a MEMS wafer. A MEMS wafer includes a handle wafer with cavities bonded to a device wafer through a dielectric layer disposed between the handle and device wafers. The MEMS wafer also includes a moveable portion of the device wafer suspended over a cavity in the handle wafer. Four methods are described to create two or more enclosures having multiple gas pressure or compositions on a single substrate including, each enclosure containing a moveable portion. The methods include: A. Forming a secondary sealed enclosure, B. Creating multiple ambient enclosures during wafer bonding, C. Creating and breaching an internal gas reservoir, and D. Forming and subsequently sealing a controlled leak/breach into the enclosure.Type: ApplicationFiled: November 27, 2019Publication date: April 9, 2020Inventors: Michael DANEMAN, Martin LIM, Kegang HUANG, Igor TCHERTKOV
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Patent number: 10532926Abstract: A Microelectromechanical systems (MEMS) structure comprises a MEMS wafer. A MEMS wafer includes a handle wafer with cavities bonded to a device wafer through a dielectric layer disposed between the handle and device wafers. The MEMS wafer also includes a moveable portion of the device wafer suspended over a cavity in the handle wafer. Four methods are described to create two or more enclosures having multiple gas pressure or compositions on a single substrate including, each enclosure containing a moveable portion. The methods include: A. Forming a secondary sealed enclosure, B. Creating multiple ambient enclosures during wafer bonding, C. Creating and breaching an internal gas reservoir, and D. Forming and subsequently sealing a controlled leak/breach into the enclosure.Type: GrantFiled: November 22, 2016Date of Patent: January 14, 2020Assignee: INVENSENSE, INC.Inventors: Michael Daneman, Martin Lim, Kegang Huang, Igor Tchertkov
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Publication number: 20180160912Abstract: Disclosed embodiments pertain to cardiovascular parameter (e.g. heart rate) measurements when motion is present. Biometric sensor signal measurements may be obtained based on cardiovascular parameters of a user; and motion sensor signal measurements may be obtained based on user motion. An activity type may be determined based on the motion sensor signals. For example, when non-motion related frequencies in a frequency domain representation of the biometric sensor signal are obscured by user motion, an activity type may be determined based on the motion sensor signals. Further, based on the activity type, for each cardiovascular parameter (e.g. heart rate), a corresponding likely cardiovascular parameter value (e.g. a likely heart rate) may be determined. A corresponding fundamental frequency associated with the biometric sensor signal may then be determined for each cardiovascular parameter based on the motion sensor signal measurements and the corresponding likely cardiovascular parameter value.Type: ApplicationFiled: March 13, 2017Publication date: June 14, 2018Inventors: Russel Martin, Shashank Narayanan, Hithesh Reddivari, Vidyut Naware, Igor Tchertkov, Joseph Czompo
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Publication number: 20170297907Abstract: A Microelectromechanical systems (MEMS) structure comprises a MEMS wafer. A MEMS wafer includes a handle wafer with cavities bonded to a device wafer through a dielectric layer disposed between the handle and device wafers. The MEMS wafer also includes a moveable portion of the device wafer suspended over a cavity in the handle wafer. Four methods are described to create two or more enclosures having multiple gas pressure or compositions on a single substrate including, each enclosure containing a moveable portion. The methods include: A. Forming a secondary sealed enclosure, B. Creating multiple ambient enclosures during wafer bonding, C. Creating and breaching an internal gas reservoir, and D. Forming and subsequently sealing a controlled leak/breach into the enclosure.Type: ApplicationFiled: November 22, 2016Publication date: October 19, 2017Inventors: Michael DANEMAN, Martin LIM, Kegang HUANG, Igor TCHERTKOV
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Patent number: 9766264Abstract: Described herein is an accelerometer that can be sensitive to acceleration, but not anchor motion due to sources other than acceleration. The accelerometer can employ a set of electrodes and/or transducers that can register motion of the proof mass and support structure and employ and output-cancelling mechanism so that the accelerometer can distinguish between acceleration and anchor motion due to sources other than acceleration. For example, the effects of anchor motion can be cancelled from an output signal of the accelerometer so that the accelerometer exhibits sensitivity to only acceleration.Type: GrantFiled: August 21, 2014Date of Patent: September 19, 2017Assignee: INVENSENSE, INC.Inventors: Jin Qiu, Joe Seeger, Alexander Castro, Igor Tchertkov, Richard Li
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Publication number: 20170079535Abstract: Methods, systems, computer-readable media, and apparatuses for obtaining blood pressure measurements are presented. The blood pressure measurements may be obtained by determining a pulse-transit time (PTT) as a function of a photoplethysmography (PPG) measurement and electrocardiogram (ECG) measurement. A mobile device includes outer body sized to be portable for a user of the mobile device. The mobile device also includes a plurality of light emitting components distributed along at least one portion of the mobile device and a plurality of light collecting components configured to measure reflected light from the plurality of light emitting components reflected off of blood vessels within the user. The light emitting and light collecting components are distributed along the at least one portion of the mobile device. The mobile device may also include a light guide configured to direct light emitted by the at least one light emitting component toward blood vessels with the user.Type: ApplicationFiled: September 23, 2015Publication date: March 23, 2017Inventors: Igor TCHERTKOV, Evgeni Yurij POLIAKOV, Russell Wayne GRUHLKE, Russel Allyn MARTIN, Evgeni Petrovich GOUSEV, Muhammed Ibrahim SEZAN
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Publication number: 20170079534Abstract: Methods, systems, computer-readable media, and apparatuses for obtaining blood pressure measurements are presented. The blood pressure measurements may be obtained by determining a pulse-transit time (PTT) as a function of a photoplethysmography (PPG) measurement and electrocardiogram (ECG) measurement. A mobile device includes outer body sized to be portable for a user of the mobile device. The mobile device also includes a plurality of light emitting components distributed along at least one portion of the mobile device and a plurality of light collecting components configured to measure reflected light from the plurality of light emitting components reflected off of blood vessels within the user. The light emitting and light collecting components are distributed along the at least one portion of the mobile device. The mobile device may also include a light guide configured to direct light emitted by the at least one light emitting component toward blood vessels with the user.Type: ApplicationFiled: September 23, 2015Publication date: March 23, 2017Inventors: Igor TCHERTKOV, Evgeni Yurij POLIAKOV, Russell Wayne GRUHLKE, Russel Allyn MARTIN, Evgeni Petrovich GOUSEV, Muhammed Ibrahim SEZAN
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Publication number: 20170079591Abstract: Methods, systems, computer-readable media, and apparatuses for obtaining vital measurements are presented. The vital measurements may include a blood pressure value that can be obtained by determining a pulse-transit time (PTT) as a function of a photoplethysmography (PPG) measurement and electrocardiogram (ECG) measurement. A mobile device includes an outer body sized to be portable for a user, a processor contained within the outer body, a display coupled to a light guide, and at least one first sensor coupled to the light guide. The display is configured to display an illumination pattern directing light toward blood vessels within the user. The at least one first sensor is configured to measure reflected light from the illumination pattern reflected off of the blood vessels within the user, wherein the processor is configured to obtain a first measurement indicative of changes in blood volume based at least in part on the measured reflected light.Type: ApplicationFiled: September 21, 2015Publication date: March 23, 2017Inventors: Russell GRUHLKE, Igor TCHERTKOV, Russel Allyn MARTIN, Evgeni POLIAKOV, Evgeni GOUSEV, Liang SHEN, Alok GOVIL
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Patent number: 9540230Abstract: A Microelectromechanical systems (MEMS) structure comprises a MEMS wafer. A MEMS wafer includes a handle wafer with cavities bonded to a device wafer through a dielectric layer disposed between the handle and device wafers. The MEMS wafer also includes a moveable portion of the device wafer suspended over a cavity in the handle wafer. Four methods are described to create two or more enclosures having multiple gas pressure or compositions on a single substrate including, each enclosure containing a moveable portion. The methods include: A. Forming a secondary sealed enclosure, B. Creating multiple ambient enclosures during wafer bonding, C. Creating and breaching an internal gas reservoir, and D. Forming and subsequently sealing a controlled leak/breach into the enclosure.Type: GrantFiled: June 27, 2012Date of Patent: January 10, 2017Assignee: INVENSENSE, INC.Inventors: Michael Daneman, Martin Lim, Kegang Huang, Igor Tchertkov
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Patent number: 9322701Abstract: Systems, apparatus and methods for estimating a mass of an object by a mobile device are presented. The mobile device, which may be a smartphone, vibrates the mobile device both unloaded (without an object) and loaded (with an object) while measuring the unloaded and loaded vibrations. Next, the mobile device compares the unloaded and loaded vibrations and determines the mass of the object from the comparison.Type: GrantFiled: August 2, 2013Date of Patent: April 26, 2016Assignee: QUALCOMM IncorporatedInventors: Igor Tchertkov, Siddika Parlak Polatkan
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Publication number: 20160081627Abstract: Methods, systems, computer-readable media, and apparatuses for assessing a fitness state of a user via a mobile device are presented. In some implementations, a first physiological measurement of the user during a first level of a physical activity is obtained via one or more sensors. A second physiological measurement during a second level of the physical activity is obtained via the one or more sensors. A transient physiological measurement based on the first physiological measurement and the second physiological measurement is determined. The physical activity is classified based on one or more motion measurements obtained via the one or more sensors. A fitness profile indicative of a fitness state of the user is generated based at least in part on the determined transient physiological measurement and the classified physical activity.Type: ApplicationFiled: September 23, 2014Publication date: March 24, 2016Inventors: Justin Patrick McGloin, Russel Allyn Martin, Radu Pitigoi-Aron, Ramin Samadani, Igor Tchertkov
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Publication number: 20150132855Abstract: Techniques described herein enable a mobile multifunction device to detect a disposable sensor card at an interface coupled to the mobile multifunction device, wherein the disposable sensor card is mounted inside an opening in the mobile multifunction device, detect analog information associated with the disposable sensor card, and convert analog information to digital information. Detecting analog information comprises detecting a non-transient change in at least a portion of the disposable sensor card, wherein at least a portion of the first disposable sensor card changes form in response to exposure to one or more stimuli from an environment of the first disposable sensor card. A non-transient change may include one or more of changing color, changing shape, changing chemical composition or changing electrical characteristics. Furthermore, the interface may be configured to receive disposable sensor cards with varying sensing capabilities.Type: ApplicationFiled: November 11, 2013Publication date: May 14, 2015Applicant: QUALCOMM IncorporatedInventors: Russel Allyn Martin, Ana Rangelova Londergan, Justin Phelps Black, Rihui He, Igor Tchertkov, Raghu Subramanian Srivatsa
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Publication number: 20150034396Abstract: Systems, apparatus and methods for estimating a mass of an object by a mobile device are presented. The mobile device, which may be a smartphone, vibrates the mobile device both unloaded (without an object) and loaded (with an object) while measuring the unloaded and loaded vibrations. Next, the mobile device compares the unloaded and loaded vibrations and determines the mass of the object from the comparison.Type: ApplicationFiled: August 2, 2013Publication date: February 5, 2015Applicant: QUALCOMM IncorporatedInventors: Igor TCHERTKOV, Siddika PARLAK POLATKAN
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Publication number: 20140360268Abstract: Described herein is an accelerometer that can be sensitive to acceleration, but not anchor motion due to sources other than acceleration. The accelerometer can employ a set of electrodes and/or transducers that can register motion of the proof mass and support structure and employ and output-cancelling mechanism so that the accelerometer can distinguish between acceleration and anchor motion due to sources other than acceleration. For example, the effects of anchor motion can be cancelled from an output signal of the accelerometer so that the accelerometer exhibits sensitivity to only acceleration.Type: ApplicationFiled: August 21, 2014Publication date: December 11, 2014Inventors: Jin Qiu, Joe Seeger, Alexander Castro, Igor Tchertkov, Richard Li
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Patent number: 8839670Abstract: Described herein is an accelerometer that can be sensitive to acceleration, but not anchor motion due to sources other than acceleration. The accelerometer can employ a set of electrodes and/or transducers that can register motion of the proof mass and support structure and employ and output-cancelling mechanism so that the accelerometer can distinguish between acceleration and anchor motion due to sources other than acceleration. For example, the effects of anchor motion can be cancelled from an output signal of the accelerometer so that the accelerometer exhibits sensitivity to only acceleration.Type: GrantFiled: September 30, 2011Date of Patent: September 23, 2014Assignee: Invensense, Inc.Inventors: Jin Qiu, Joe Seeger, Alexander Castro, Igor Tchertkov, Richard Li