# US 11,896,353 B2 · Apparatus for estimating bio-information, and method of determining false detection of bio-signal peaks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,353 B2 - Document ID: US11896353B2 - Status: Granted - Kind: B2 - Application number: 17/589,207 - Filed: 2022-01-31 - Published: 2023-04-27 - Granted: 2024-02-13 - Earliest claimed: 2021-10-26 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Ui Kun Kwon; Jae Min Kang; Youn Ho Kim; Sang Kon Bae; Jin Woo Choi; Chang Mok Choi - Web page: https://patentgrep.com/patent/US11896353B2 ## CPC - A61B 5/02116: {of pulse wave amplitude (A61B5/02225 takes precedence)} - A61B 8/02: Measuring pulse or heart rate - A61B 5/021: Measuring pressure in heart or blood vessels - A61B 5/6824: {Arm or wrist} - A61B 5/7235: {Details of waveform analysis (detecting specific parameters of the electrocardiograph cycle A61B5/349)} - A61B 8/04: Measuring blood pressure - A61B 8/4427: {Device being portable or laptop-like} - A61B 8/5207: {involving processing of raw data to produce diagnostic data, e.g. for generating an image} - A61B 8/5223: {for extracting a diagnostic or physiological parameter from medical diagnostic data (for algorithms to analyse biomedical images G06T7/0012)} - A61B 8/5269: {involving detection or reduction of artifacts} - A61B 5/6815: {Ear} - A61B 5/746: {Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An apparatus for estimating bio-information is provided. The apparatus for estimating bio-information according to an embodiment includes: an ultrasonic sensor configured to acquire a bio-signal from an object; and a processor configured to detect peaks from the bio-signal, and to determine false detection of a peak, among the detected peaks, by using at least one of a time interval between a current peak and an immediately preceding peak, amplitudes of the current peak and the immediately preceding peak, a shape of a waveform on a left region and a right region of the peak, and an occurrence position of the peak. ## Claims ### Claim 1 A method of determining false detection of peaks in a bio-signal, the method comprising: receiving a bio-signal of an object, acquired from an ultrasonic sensor by transmitting ultrasonic waves to the object and receiving reflection waves reflected from the object; detecting peaks from the bio-signal; and determining false detection of a peak, among the detected peaks, by using at least one of a time interval between a current peak and an immediately preceding peak, amplitudes of the current peak and the immediately preceding peak, a shape of a waveform on a left region and a right region of the peak, and an occurrence position of the peak. ### Claim 2 (depends on 1) The method of claim 1, wherein the detecting the peaks in the bio-signal comprises detecting the peaks by sliding a predetermined detection region over time using a predetermined peak detection algorithm. ### Claim 3 (depends on 1) The method of claim 1, wherein the determining the false detection of the peak comprises: based on the time interval between the current peak and the immediately preceding peak being less than or equal to a predetermined threshold value, determining the current peak as false detection. ### Claim 4 (depends on 1) The method of claim 1, wherein the determining the false detection of the peak comprises: based on the time interval between the current peak and the immediately preceding peak being less than a time interval between previous peaks by a predetermined threshold value or greater, determining the current peak as false detection. ### Claim 5 (depends on 1) The method of claim 1, wherein the determining the false detection of the peak comprises, based on an amplitude of the current peak being less than an amplitude of the immediately preceding peak by a predetermined threshold value or greater, determining the current peak as false detection. ### Claim 6 (depends on 1) The method of claim 1, wherein the determining the false detection of the peak comprises, based on an amplitude of the current peak being less than an average of signal amplitudes in a region between the current peak and the immediately preceding peak by a predetermined threshold value or greater, determining the current peak as false detection. ### Claim 7 (depends on 1) The method of claim 1, wherein the determining the false detection of the peak comprises, based on an amplitude between a reference point and the current peak being less than an amplitude between the reference point and the immediately preceding peak by a predetermined threshold value or greater, determining the current peak as false detection. ### Claim 8 (depends on 1) The method of claim 1, wherein the determining the false detection of the peak comprises: based on an area of the right region of the peak being less than an area of the left region of the peak by a predetermined threshold value or greater, determining the peak as false detection. ### Claim 9 (depends on 1) The method of claim 1, wherein the determining the false detection of the peaks comprises: obtaining a first average slope of the left region of the peak and a second average slope of the right region of the peak; and based on a ratio of the second average slope to the first average slope is a predetermined threshold value or greater, determining the peak as false detection. ### Claim 10 (depends on 1) The method of claim 1, wherein the determining the false detection of the peaks comprises, based on the occurrence position of the peak being detected in a predetermined start region or end region of the waveform, determining the peak as false detection. ### Claim 11 An apparatus for estimating bio-information, the apparatus comprising: an ultrasonic sensor configured to acquire a bio-signal from an object, by transmitting ultrasonic waves to the object and receiving reflection waves reflected from the object; and a processor configured to detect peaks from the bio-signal, and configured to determine false detection of a peak, among the detected peaks, by using at least one of a time interval between a current peak and an immediately preceding peak, amplitudes of the current peak and the immediately preceding peak, a shape of a waveform on a left region and a right region of the peak, and an occurrence position of the peak. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to, based on the time interval between the current peak and the immediately preceding peak being less than a predetermined threshold value or greater, determine the current peak as false detection. ### Claim 13 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to, based on the time interval between the current peak and the immediately preceding peak being less than a time interval between previous peaks by a predetermined threshold value or greater, determine the current peak as false detection. ### Claim 14 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to, based on an amplitude of the current peak being less than an amplitude of the immediately preceding peak by a predetermined threshold value or greater, determine the current peak as false detection. ### Claim 15 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to, based on an amplitude of the current peak being less than an average of signal amplitudes in a region between the current peak and the immediately preceding peak by a predetermined threshold value or greater, determine the current peak as false detection. ### Claim 16 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to, based on an amplitude between a reference point and the current peak being less than an amplitude between the reference point and the immediately preceding peak by a predetermined threshold value or greater, determine the current peak as false detection. ### Claim 17 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to, based on an area of the right region of the peak being less than an area of the left region of the peak by a predetermined threshold value or greater, determine the peak as false detection. ### Claim 18 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to, obtain a first average slope of the left region of the peak and a second average slope of the right region of the peak, and based on a ratio of the second average slope to the first average slope is a predetermined threshold value or greater, determine the peak as false detection. ### Claim 19 (depends on 11) The apparatus of claim 11, wherein the processor is further configured to estimate bio-information based on a result of the false detection. ### Claim 20 An electronic device comprising: a main body; and an apparatus configured to estimate bio-information and disposed in the main body, wherein the apparatus for estimating bio-information comprises: a sensor configured to acquire a bio-signal from an object of a user, by transmitting ultrasonic waves to the object and receiving reflection waves reflected from the object; and a processor configured to detect peaks from the bio-signal, configured to determine false detection of a peak, among the detected peaks, by using at least one of a time interval between a current peak and an immediately preceding peak, amplitudes of the current peak and the immediately preceding peak, shapes of waveforms on a left region and a right region of the peak, and an occurrence position of the peak, and configured to determine a health condition of the user based on a result of determining the false detection of the peak.