Patents by Inventor Chi-yul Yoon
Chi-yul Yoon 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: 11529059Abstract: Provided is a film-type biomedical signal measuring apparatus configured in a such a way that a plurality of metallic thin film electrodes and a circuit unit are formed on a film-type piezoelectric element so as to easily attach the apparatus to the skin and an electrical signal as well as an electrical signal of a human body is simultaneously measured using the plurality of metallic thin film electrodes and the circuit unit. Accordingly, the film-type biomedical signal measuring apparatus simultaneously measures electrocardiogram (ECG) and ballistocardiogram (BCG) from the simultaneously measured electrical signal and vibration signal of the human body and extracts biomedical information of various types of health indexes such as a heart rate, a stress index, BCG, a blood pressure, an amount of physical activity, a respiration rate, and VO2max from the two different biomedical signals.Type: GrantFiled: October 14, 2019Date of Patent: December 20, 2022Assignee: Seoul National University R&DB FoundationInventors: Hee Chan Kim, Seung Woo Noh, Chi Yul Yoon
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Patent number: 11488316Abstract: An optical system is provided. The optical system includes an image generator configured to output image signals for configuring a virtual image, and an infrared (IR) image signal, a multipath optical element configured to guide the beams, a diffraction grating configured to diffract parts of the output beams and transmit other parts of the output beams, an outcoupler configured to allow the diffracted beams to exit the multipath optical element, a first camera configured to sense a pattern of reflection of an IR beam exiting the outcoupler, an IR filter diffraction element, a second camera configured to sense a pattern of reflection of the IR beam projected toward the real world, and a processor configured to determine a line of sight of a user based on the pattern sensed by the first camera, and to determine depth information of the object based on the pattern sensed by the second camera.Type: GrantFiled: January 2, 2019Date of Patent: November 1, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Chi-yul Yoon, Ji-Woon Yeom, Jae-Eun Kang
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Patent number: 11216974Abstract: The disclosure relates to a method of determining a gaze distance, the method including obtaining a plurality of images by capturing each of both eyes of a user, determining, from each of the plurality of images, a corner point located at an edge of the eye, a location of a pupil, and an eye contour, determining each of gaze directions of both of the eyes based on a difference between a reference point and the location of the pupil, wherein the reference point is determined based on the eye contour and a location of the corner point, and determining a gaze distance based on a difference between the gaze directions of both of the eyes.Type: GrantFiled: December 14, 2017Date of Patent: January 4, 2022Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Chi-yul Yoon, Sang Yoon Han, Sang Hwa Lee, Yeongil Jang, Nam Ik Cho
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Patent number: 11213212Abstract: An apparatus for measuring blood pressure, and a method for measuring blood pressure by using the same are disclosed. The disclosed method for measuring blood pressure comprises the steps of: calculating pulse wave transit time; measuring vascular compliance; and measuring systolic blood pressure and diastolic blood pressure by using the pulse wave transit time and the vascular compliance, wherein the vascular compliance can be measured respectively in at least two or more different hand shape poses.Type: GrantFiled: November 14, 2016Date of Patent: January 4, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byung-hun Choi, Hyun-woo Koh, Hyun-su Kim, Hyun-jae Baek, Jae-wook Shin, Chi-yul Yoon, Jae-geol Cho
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Patent number: 11119571Abstract: Provided is a virtual image display device including: an image generator outputting a virtual image; a filter transmitting light in a first polarization state in the output virtual image; a multipath optical element guiding the transmitted light in the first polarization state; a first optical element arranged on a first side of the multipath optical element and allowing the guided light in the first polarization state and real-world light to pass therethrough; a second optical element arranged on a second side opposite to the first side of the multipath optical element and allowing the real-world light to pass therethrough; and a processor controlling the image generator, the first optical element, and the second optical element.Type: GrantFiled: July 11, 2018Date of Patent: September 14, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chi-yul Yoon, Jae-woo Ko, Ji-woon Yeom, Kyu-sub Kwak, Jae-Eun Kang
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Publication number: 20200372677Abstract: The disclosure relates to a method of determining a gaze distance, the method including obtaining a plurality of images by capturing each of both eyes of a user, determining, from each of the plurality of images, a corner point located at an edge of the eye, a location of a pupil, and an eye contour, determining each of gaze directions of both of the eyes based on a difference between a reference point and the location of the pupil, wherein the reference point is determined based on the eye contour and a location of the corner point, and determining a gaze distance based on a difference between the gaze directions of both of the eyes.Type: ApplicationFiled: December 14, 2017Publication date: November 26, 2020Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.Inventors: Chi-yul YOON, Sang Yoon HAN, Sang Hwa LEE, Yeongil JANG, Nam Ik CHO
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Publication number: 20200201428Abstract: Provided is a virtual image display device including: an image generator outputting a virtual image; a filter transmitting light in a first polarization state in the output virtual image; a multipath optical element guiding the transmitted light in the first polarization state; a first optical element arranged on a first side of the multipath optical element and allowing the guided light in the first polarization state and real-world light to pass therethrough; a second optical element arranged on a second side opposite to the first side of the multipath optical element and allowing the real-world light to pass therethrough; and a processor controlling the image generator, the first optical element, and the second optical element.Type: ApplicationFiled: July 11, 2018Publication date: June 25, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chi-yul YOON, Jae-woo KO, Ji-woon YEOM, Kyu-sub KWAK, Jae-eun KANG
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Publication number: 20200107744Abstract: Provided is a film-type biomedical signal measuring apparatus configured in a such a way that a plurality of metallic thin film electrodes and a circuit unit are formed on a film-type piezoelectric element so as to easily attach the apparatus to the skin and an electrical signal as well as an electrical signal of a human body is simultaneously measured using the plurality of metallic thin film electrodes and the circuit unit. Accordingly, the film-type biomedical signal measuring apparatus simultaneously measures electrocardiogram (ECG) and ballistocardiogram (BCG) from the simultaneously measured electrical signal and vibration signal of the human body and extracts biomedical information of various types of health indexes such as a heart rate, a stress index, BCG, a blood pressure, an amount of physical activity, a respiration rate, and VO2max from the two different biomedical signals.Type: ApplicationFiled: October 14, 2019Publication date: April 9, 2020Applicant: Seoul National University R&DB FOUNDATIONInventors: Hee Chan KIM, Seung Woo NOH, Chi Yul YOON
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Patent number: 10478082Abstract: Provided is a film-type biomedical signal measuring apparatus configured in a such a way that a plurality of metallic thin film electrodes and a circuit unit are formed on a film-type piezoelectric element so as to easily attach the apparatus to the skin and an electrical signal as well as an electrical signal of a human body is simultaneously measured using the plurality of metallic thin film electrodes and the circuit unit. Accordingly, the film-type biomedical signal measuring apparatus simultaneously measures electrocardiogram (ECG) and ballistocardiogram (BCG) from the simultaneously measured electrical signal and vibration signal of the human body and extracts biomedical information of various types of health indexes such as a heart rate, a stress index, BCG, a blood pressure, an amount of physical activity, a respiration rate, and VO2max from the two different biomedical signals.Type: GrantFiled: March 24, 2014Date of Patent: November 19, 2019Assignee: Seoul National University R&DB FOUNDATIONInventors: Hee Chan Kim, Seung Woo Noh, Chi Yul Yoon
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Publication number: 20190213745Abstract: An optical system is provided. The optical system includes an image generator configured to output image signals for configuring a virtual image, and an infrared (IR) image signal, a multipath optical element configured to guide the beams, a diffraction grating configured to diffract parts of the output beams and transmit other parts of the output beams, an outcoupler configured to allow the diffracted beams to exit the multipath optical element, a first camera configured to sense a pattern of reflection of an IR beam exiting the outcoupler, an IR filter diffraction element, a second camera configured to sense a pattern of reflection of the IR beam projected toward the real world, and a processor configured to determine a line of sight of a user based on the pattern sensed by the first camera, and to determine depth information of the object based on the pattern sensed by the second camera.Type: ApplicationFiled: January 2, 2019Publication date: July 11, 2019Inventors: Chi-yul YOON, Ji-woon YEOM, Jae-eun KANG
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Patent number: 10248202Abstract: A video display apparatus includes a display configured to reproduce a video, a processor configured to generate a signal for applying an electrical stimulus to a user, based on a motion depicted in the video, and a communication unit configured to transmit the signal to an electrical stimulation apparatus.Type: GrantFiled: January 3, 2017Date of Patent: April 2, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun-ki Jung, Hyun-ki Kim, Jae-min Moon, Chi-yul Yoon, Sang-min Lee, Seong-hyun Jang
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Publication number: 20180353089Abstract: An apparatus for measuring blood pressure, and a method for measuring blood pressure by using the same are disclosed. The disclosed method for measuring blood pressure comprises the steps of: calculating pulse wave transit time; measuring vascular compliance; and measuring systolic blood pressure and diastolic blood pressure by using the pulse wave transit time and the vascular compliance, wherein the vascular compliance can be measured respectively in at least two or more different hand shape poses.Type: ApplicationFiled: November 14, 2016Publication date: December 13, 2018Inventors: Byung-hun CHOI, Hyun-woo KOH, Hyun-su KIM, Hyun-jae BAEK, Jae-wook SHIN, Chi-yul YOON, Jae-geol CHO
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Publication number: 20170249010Abstract: A video display apparatus includes a display configured to reproduce a video, a processor configured to generate a signal for applying an electrical stimulus to a user, based on a motion depicted in the video, and a communication unit configured to transmit the signal to an electrical stimulation apparatus.Type: ApplicationFiled: January 3, 2017Publication date: August 31, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun-ki JUNG, Hyun-ki KIM, Jae-min MOON, Chi-yul YOON, Sang-min LEE, Seong-hyun JANG
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Patent number: 9483617Abstract: Provided is a system and method for evaluating laser treatment, for converting the attribute of a laser beam and numerically evaluating proficiency of a laser treatment operator by processing data obtained by photographing the converted laser beam so as to use the evaluated data as training data. The laser treatment evaluating system includes an attenuation unit for attenuating intensity of a laser beam transmitted through a transmissive plate, a camera for photographing the laser beam transmitted through the attenuation unit, and an image data processing apparatus connected to the camera, for processing an image captured by the camera, tracking a trajectory of a laser beam on the transmissive plate, and calculating a distribution state of spots on which the laser beam on the transmissive plate is emitted.Type: GrantFiled: April 8, 2015Date of Patent: November 1, 2016Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Sungwan Kim, Seung Woo Noh, Hyoung Woo Lim, Chi Yul Yoon, Youdan Kim, Jin Ho Chung, Hee Chan Kim, Woo Seok Koh
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Publication number: 20160051156Abstract: Provided is a film-type biomedical signal measuring apparatus configured in a such a way that a plurality of metallic thin film electrodes and a circuit unit are formed on a film-type piezoelectric element so as to easily attach the apparatus to the skin and an electrical signal as well as an electrical signal of a human body is simultaneously measured using the plurality of metallic thin film electrodes and the circuit unit. Accordingly, the film-type biomedical signal measuring apparatus simultaneously measures electrocardiogram (ECG) and ballistocardiogram (BCG) from the simultaneously measured electrical signal and vibration signal of the human body and extracts biomedical information of various types of health indexes such as a heart rate, a stress index, BCG, a blood pressure, an amount of physical activity, a respiration rate, and VO2max from the two different biomedical signals.Type: ApplicationFiled: March 24, 2014Publication date: February 25, 2016Inventors: Hee Chan KIM, Seung Woo NOH, Chi Yul YOON
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Publication number: 20150287190Abstract: Provided is a system and method for evaluating laser treatment, for converting the attribute of a laser beam and numerically evaluating proficiency of a laser treatment operator by processing data obtained by photographing the converted laser beam so as to use the evaluated data as training data. The laser treatment evaluating system includes an attenuation unit for attenuating intensity of a laser beam transmitted through a transmissive plate, a camera for photographing the laser beam transmitted through the attenuation unit, and an image data processing apparatus connected to the camera, for processing an image captured by the camera, tracking a trajectory of a laser beam on the transmissive plate, and calculating a distribution state of spots on which the laser beam on the transmissive plate is emitted.Type: ApplicationFiled: April 8, 2015Publication date: October 8, 2015Inventors: Sungwan KIM, Seung Woo NOH, Hyoung Woo LIM, Chi Yul YOON, Youdan KIM, Jin Ho CHUNG, Hee Chan KIM, Woo Seok KOH
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Patent number: D910728Type: GrantFiled: May 10, 2019Date of Patent: February 16, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Eun Vit Chung, Yong Soo Kwak, Chi Yul Yoon, Shin Gyu Kim
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Patent number: D910729Type: GrantFiled: May 10, 2019Date of Patent: February 16, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Eun Vit Chung, Yong Soo Kwak, Chi Yul Yoon, Shin Gyu Kim
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Patent number: D928858Type: GrantFiled: April 3, 2020Date of Patent: August 24, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyu-Bok Lee, Jin-Hak Lee, Yong-Soo Kwak, Chi-Yul Yoon
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Patent number: D928859Type: GrantFiled: April 3, 2020Date of Patent: August 24, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyu-Bok Lee, Jin-Hak Lee, Yong-Soo Kwak, Chi-Yul Yoon