Patents by Inventor Kwan Oh
Kwan Oh 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: 10353268Abstract: Provided are an acousto-optic element, an acousto-optic element array, and a display apparatus including the acousto-optic element array. The acousto-optic element includes: an acousto-optic modulator which includes an acousto-optic layer formed of an acousto-optic material; a light supplier which supplies light to the acousto-optic modulator in a first direction; a first sound-wave modulator which applies first elastic waves to the acousto-optic modulator in a second direction; and a second sound-wave modulator which applies second elastic waves to the acousto-optic modulator in a third direction. The light supplied from the light supplier to the acousto-optic modulator is deflected by diffraction caused by the first elastic waves applied from the first sound-wave modulator and diffraction caused by the second elastic waves applied from the second sound-wave modulator, and is output from the acousto-optic modulator through a front side of the acousto-optic modulator.Type: GrantFiled: July 5, 2017Date of Patent: July 16, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Seung-hoon Han, Won-taek Seo, Hae-kwan Oh, Hong-seok Lee, Eun-hyoung Cho, Kee-keun Lee
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Publication number: 20190110768Abstract: An X-ray apparatus performs image processing on an image of an object photographed by using a camera, and uses the image-processed image as an image marker in an X-ray image. A display is configured to display the X-ray image and the image marker on the region of the X-ray image.Type: ApplicationFiled: November 29, 2018Publication date: April 18, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byeong-won LEE, Jeong-yong SONG, Do-kwan OH, Hyun-hwa OH, Choong-hwan CHOI
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Patent number: 10256709Abstract: A linear vibrator that transmits tactile signals to a user of a mobile phone, PDA, or a portable game console. The linear vibrator uses rubber or silicone rubber having lower elasticity as a material of an elastic body secured to a casing or a base for supporting an oscillator horizontally moving by an electromagnetic force relative to a facing stator, thereby lowering the frequency sensitivity due to a characteristic frequency; reducing various errors of parts and errors in part assembly, thus resulting in smaller deviations of characteristic frequencies between products from mass production; and significantly reducing production cost by using an elastic body made of rubber or silicon rubber instead of steel plate or wire, thereby efficiently producing a structure through a simple assembly process and reducing the manufacture facility cost and labor cost resulting in improved productivity.Type: GrantFiled: January 20, 2016Date of Patent: April 9, 2019Assignee: MOATECH CO., LTDInventor: Seong-Kwan Oh
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Patent number: 10222257Abstract: An ultraviolet-ray (UV) sensor is disclosed. In one embodiment, the UV sensor includes a piezoelectric material, a sensing film arranged on the piezoelectric material and senses ultraviolet rays, an elastic wave input unit arranged on one end of the sensing film on the piezoelectric material and provides the sensing film with an elastic wave generated based on an electrical signal and an elastic wave output unit arranged on the other end of the sensing film on the piezoelectric material and senses a change in frequency of the electrical signal generated based on the provided elastic wave. The UV sensor improves sensitivity of the sensor by enabling the particles having large surface areas due to their characteristics to react with a larger amount of ultraviolet rays. the UV sensor can secure price competitiveness since the UV sensor measures a change in frequency of the elastic wave using zinc oxide (ZnO) nanoparticles.Type: GrantFiled: January 17, 2018Date of Patent: March 5, 2019Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Kunnyun Kim, Yeon Hwa Kwak, Hae Kwan Oh
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Patent number: 10172578Abstract: An X-ray apparatus performs image processing on an image of an object photographed by using a camera, and uses the image-processed image as an image marker in an X-ray image. A display is configured to display the X-ray image and the image marker on the region of the X-ray image.Type: GrantFiled: July 25, 2016Date of Patent: January 8, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byeong-won Lee, Jeong-yong Song, Do-kwan Oh, Hyun-hwa Oh, Choong-Hwan Choi
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Patent number: 10114268Abstract: Provided is an acousto-optic device including an elastic medium; a meta structure formed on a first surface of the elastic medium, and an elastic-wave generating unit which generates an elastic wave in the elastic medium. The meta structure includes a first layer and a second layer that is formed on the first layer. The at least one of the first layer and the second layer includes a predetermined repetitive pattern.Type: GrantFiled: January 23, 2014Date of Patent: October 30, 2018Assignees: SAMSUNG ELECTRONICS CO., LTD., AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Seung-hoon Han, Wan-joo Maeng, Won-taek Seo, Hoon Song, Hae-kwan Oh, Kee-keun Lee
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Patent number: 10008901Abstract: Disclosed herein is a step motor. The step motor includes a casing, a stator disposed in the casing, with a coil being wound around the stator, a rotor disposed in the stator, having a rotor shaft that is rotatably supported at both ends of the casing, and rotated by interaction with the stator, a rotary sensing unit provided in the casing to detect a rotation of the rotor, and a coil connector formed on an outer surface of the stator, with an end of the coil being connected to the coil connector.Type: GrantFiled: August 26, 2015Date of Patent: June 26, 2018Assignee: MOATECH CO., LTD.Inventors: Woo-Seok Yeo, Seong-Kwan Oh, Hyun-Ki Yang, Hong-Min Jang
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Publication number: 20180143070Abstract: A multispectral optical sensor is disclosed. In one embodiment, the multispectral optical sensor includes a piezoelectric material, a first sensing layer and a second sensing layer spaced apart from each other on the piezoelectric material and configured to change the propagation speed of the acoustic wave propagated through the piezoelectric material by receiving ultraviolet light and visible light, respectively. The multiple optical sensor further includes a first acoustic wave output part and a second acoustic wave output part disposed on the piezoelectric material respectively corresponding to the first and second sensing layers and configured to generate an electrical signal based on the changed acoustic wave. The multiple optical sensor measures the intensity of ultraviolet and visible light using a single sensor by detecting the change in frequency, and measures the frequency change in the acoustic wave using zinc oxide, gallium nitride), or cadmium sulfide nanoparticles.Type: ApplicationFiled: January 17, 2018Publication date: May 24, 2018Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Kunnyun KIM, Yeon Hwa KWAK, Hae Kwan OH
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Publication number: 20180143069Abstract: An ultraviolet-ray (UV) sensor is disclosed. In one embodiment, the UV sensor includes a piezoelectric material, a sensing film arranged on the piezoelectric material and senses ultraviolet rays, an elastic wave input unit arranged on one end of the sensing film on the piezoelectric material and provides the sensing film with an elastic wave generated based on an electrical signal and an elastic wave output unit arranged on the other end of the sensing film on the piezoelectric material and senses a change in frequency of the electrical signal generated based on the provided elastic wave. The UV sensor improves sensitivity of the sensor by enabling the particles having large surface areas due to their characteristics to react with a larger amount of ultraviolet rays. the UV sensor can secure price competitiveness since the UV sensor measures a change in frequency of the elastic wave using zinc oxide (ZnO) nanoparticles.Type: ApplicationFiled: January 17, 2018Publication date: May 24, 2018Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Kunnyun KIM, Yeon Hwa KWAK, Hae Kwan OH
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Publication number: 20180028138Abstract: A medical image processing apparatus includes a processor configured to acquire a first image and a second image captured by radiating an X ray to an object, generate a synthesis image by overlapping a first region of the first image with a second region of the second image, and determine matching accuracy representing a degree to which the first region and the second region match with each other; and a display configured to display the matching accuracy and the synthesis image. The medical image processing apparatus captures and synthesizes a plurality of images and display information of matching accuracy of the plurality of images. The medical image processing apparatus may provide a more accurate image by correcting a mismatched region of an overlapped region between the images.Type: ApplicationFiled: February 24, 2016Publication date: February 1, 2018Inventors: Do-kwan Oh, Byeong-won Lee, Choong-hwan Choi
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Patent number: 9861329Abstract: An X-ray apparatus includes: a source configured to emit X-rays to an object; a detector configured to detect the X-rays that have penetrated the object; an arm configured to connect the source to the detector and move centering on a stand fixed to a bottom; a controller configured to control a movement of the arm so that the controller changes a direction of the X-rays, which are radiated to the object, and the arm rotates on the stand to move the detector in a first direction, to obtain images for a plurality of parts of the object; and an image processor configured to obtain the images for the plurality of parts of the object based on the X-rays detected by the detector.Type: GrantFiled: June 17, 2015Date of Patent: January 9, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung-woo Shin, Jeong-hwan Kim, Do-kwan Oh, Dong-jae Lee, Sang-chul Lee
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Publication number: 20170299942Abstract: Provided are an acousto-optic element, an acousto-optic element array, and a display apparatus including the acousto-optic element array. The acousto-optic element includes: an acousto-optic modulator which includes an acousto-optic layer formed of an acousto-optic material; a light supplier which supplies light to the acousto-optic modulator in a first direction; a first sound-wave modulator which applies first elastic waves to the acousto-optic modulator in a second direction; and a second sound-wave modulator which applies second elastic waves to the acousto-optic modulator in a third direction. The light supplied from the light supplier to the acousto-optic modulator is deflected by diffraction caused by the first elastic waves applied from the first sound-wave modulator and diffraction caused by the second elastic waves applied from the second sound-wave modulator, and is output from the acousto-optic modulator through a front side of the acousto-optic modulator.Type: ApplicationFiled: July 5, 2017Publication date: October 19, 2017Applicants: SAMSUNG ELECTRONICS CO., LTD., AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Seung-hoon HAN, Won-taek SEO, Hae-kwan OH, Hong-seok LEE, Eun-hyoung CHO, Kee-keun LEE
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Patent number: 9778541Abstract: Provided are an acousto-optic element, an acousto-optic element array, and a display apparatus including the acousto-optic element array. The acousto-optic element includes: an acousto-optic modulator which includes an acousto-optic layer formed of an acousto-optic material; a light supplier which supplies light to the acousto-optic modulator in a first direction; a first sound-wave modulator which applies first elastic waves to the acousto-optic modulator in a second direction; and a second sound-wave modulator which applies second elastic waves to the acousto-optic modulator in a third direction. The light supplied from the light supplier to the acousto-optic modulator is deflected by diffraction caused by the first elastic waves applied from the first sound-wave modulator and diffraction caused by the second elastic waves applied from the second sound-wave modulator, and is output from the acousto-optic modulator through a front side of the acousto-optic modulator.Type: GrantFiled: July 1, 2014Date of Patent: October 3, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Seung-hoon Han, Won-taek Seo, Hae-kwan Oh, Hong-seok Lee, Eun-hyoung Cho, Kee-keun Lee
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Patent number: 9734423Abstract: An image-based structural health monitoring system and method are disclosed herein. The image-based structural health monitoring system includes a marker image acquisition unit, a marker coordinate calculation unit, a shape function determination unit, and a structural health evaluation unit. The marker image acquisition unit acquires marker images of markers attached onto the surface of a structure. The marker coordinate calculation unit calculates the coordinates of the markers in the marker images. The shape function determination unit determines a shape function by performing spline interpolation based on the calculated marker coordinates. The structural health evaluation unit evaluates the structural health of the structure by calculating the strain or stress of the structure based on the radius of curvature calculated at each location on the determined shape function.Type: GrantFiled: August 17, 2015Date of Patent: August 15, 2017Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Hyo Seon Park, Jun Su Park, Byung Kwan Oh, You Sok Kim
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Patent number: 9649080Abstract: Disclosed herein are an X-ray imaging apparatus which recognizes a marker located at a part to be subjected to X-ray imaging from an image of a subject imaged by a camera and which controls a respective movement of each of an X-ray tube and an X-ray detector to a respective position which corresponds to the recognized marker, and a method for controlling the same. An X-ray imaging apparatus includes an X-ray tube which radiates X-rays toward a subject, an X-ray detector which detects X-rays which propagate through the subject, an imaging unit which generates an image of the subject, a recognizes which recognizes a part to be subjected to X-ray imaging from the image of the subject, and a position controller which controls a movement of the X-ray tube and the X-ray detector to a position corresponding to the part to be subjected to X-ray imaging.Type: GrantFiled: April 23, 2015Date of Patent: May 16, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ho Seong Kwak, Choong Hwan Choi, Do Kwan Oh, Woo Sup Han
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Publication number: 20170020469Abstract: An X-ray apparatus performs image processing on an image of an object photographed by using a camera, and uses the image-processed image as an image marker in an X-ray image. A display is configured to display the X-ray image and the image marker on the region of the X-ray image.Type: ApplicationFiled: July 25, 2016Publication date: January 26, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byeong-won LEE, Jeong-yong SONG, Do-kwan OH, Hyun-hwa OH, Choong-Hwan CHOI
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Patent number: 9547896Abstract: A method of and apparatus for changing lesion classification data, the method including determining whether at least one mass is included in an image of an object, determining whether the at least one mass corresponds to a lesion by using first data including at least one first information, selecting a false negative (FN) mass which has been determined as not corresponding to the lesion among the at least one mass, based on a first input, and changing the first data to second data by using second information of the selected FN mass.Type: GrantFiled: May 27, 2014Date of Patent: January 17, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Choong-hwan Choi, Yong-man Ro, Seong-ho Chang, Woo-sup Han, Seong-tae Kim, Min-cheol Park, Do-kwan Oh, Byeong-won Lee
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Patent number: 9528832Abstract: Provided is a gyroscope using a surface acoustic wave (SAW) and an angular velocity measurement method. The gyroscope includes an SAW resonator generating a first SAW, generating Coriolis force using an interaction between a velocity component of the first SAW and applied angular velocity on a metallic dot layer disposed in a certain position, and generating a second SAW using the Coriolis force, an SAW sensing oscillator generating a third SAW and receiving a fourth SAW, which is the third SAW reflected and returning after causing interference due to the second SAW, and a measurement device measuring a level of the applied angular velocity using variations in time of receiving the fourth SAW.Type: GrantFiled: December 31, 2012Date of Patent: December 27, 2016Assignee: AJOU UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Kee Keun Lee, Sang Sik Yang, Hae Kwan Oh
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Publication number: 20160225155Abstract: An image-based structural health monitoring system and method are disclosed herein. The image-based structural health monitoring system includes a marker image acquisition unit, a marker coordinate calculation unit, a shape function determination unit, and a structural health evaluation unit. The marker image acquisition unit acquires marker images of markers attached onto the surface of a structure. The marker coordinate calculation unit calculates the coordinates of the markers in the marker images. The shape function determination unit determines a shape function by performing spline interpolation based on the calculated marker coordinates. The structural health evaluation unit evaluates the structural health of the structure by calculating the strain or stress of the structure based on the radius of curvature calculated at each location on the determined shape function.Type: ApplicationFiled: August 17, 2015Publication date: August 4, 2016Inventors: Hyo Seon PARK, Jun Su PARK, Byung Kwan OH, You Sok KIM
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Publication number: 20160218607Abstract: A linear vibrator that transmits tactile signals to a user of a mobile phone, PDA, or a portable game console. The linear vibrator uses rubber or silicone rubber having lower elasticity as a material of an elastic body secured to a casing or a base for supporting an oscillator horizontally moving by an electromagnetic force relative to a facing stator, thereby lowering the frequency sensitivity due to a characteristic frequency; reducing various errors of parts and errors in part assembly, thus resulting in smaller deviations of characteristic frequencies between products from mass production; and significantly reducing production cost by using an elastic body made of rubber or silicon rubber instead of steel plate or wire, thereby efficiently producing a structure through a simple assembly process and reducing the manufacture facility cost and labor cost resulting in improved productivity.Type: ApplicationFiled: January 20, 2016Publication date: July 28, 2016Inventor: Seong-Kwan Oh