Patents by Inventor Do-Sik Hwang
Do-Sik Hwang 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: 10168405Abstract: Provided are a method and apparatus for processing a magnetic resonance (MR) image of an object including first and second materials on a magnetic resonance imaging (MRI) apparatus by using multi-parameter mapping including applying to the object a plurality of radio frequency (RF) pulses separated by a first repetition time and a second repetition time, the first repetition time and the second repetition time being determined based on the first material and the second material; undersampling first MR signals corresponding to the first material and second MR signals corresponding to the second material in a K-space; and performing matching between the undersampled first and the undersampled second MR signals and a signal model for the multi-parameter mapping to determine attribute values corresponding to the first and the second materials at at least one point in an MR image of the object.Type: GrantFiled: November 11, 2015Date of Patent: January 1, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Lae-hoon Kang, Dong-hyun Kim, Min-oh Kim, Dong-yeob Han, Do-sik Hwang, Yong-sup Park, Jong-buhm Park, Jae-sung Lee
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Patent number: 9977109Abstract: Provided is a magnetic resonance imaging (MRI) apparatus.Type: GrantFiled: November 11, 2014Date of Patent: May 22, 2018Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Young-woon Lee, Jin-seong Jang, Do-sik Hwang, Tae-joon Eo, Hae-kyung Jung, Dong-hyun Kim, Min-oh Kim, Na-rae Choi, Dong-yeob Han
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Patent number: 9927508Abstract: Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes: a data acquisition unit configured to acquire a first k-space including a first missing line by undersampling an MR signal received from an object at a first time point, acquire a second k-space including a first acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a second time point, and acquire a third k-space including a second acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a third time point; and an image processor configured to interpolate data in the first missing line based on data in the first and second acquired lines.Type: GrantFiled: November 11, 2014Date of Patent: March 27, 2018Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Young-yoon Lee, Do-sik Hwang, Tae-joon Eo, Jin-seong Jang, Hae-kyung Jung, Dong-hyun Kim, Min-oh Kim, Na-rae Choi, Dong-yeob Han
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Publication number: 20160131729Abstract: Provided are a method and apparatus for processing a magnetic resonance (MR) image of an object including first and second materials on a magnetic resonance imaging (MRI) apparatus by using multi-parameter mapping including applying to the object a plurality of radio frequency (RF) pulses separated by a first repetition time and a second repetition time, the first repetition time and the second repetition time being determined based on the first material and the second material; undersampling first MR signals corresponding to the first material and second MR signals corresponding to the second material in a K-space; and performing matching between the undersampled first and the undersampled second MR signals and a signal model for the multi-parameter mapping to determine attribute values corresponding to the first and the second materials at at least one point in an MR image of the object.Type: ApplicationFiled: November 11, 2015Publication date: May 12, 2016Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Lae-hoon KANG, Dong-hyun KIM, Min-oh KIM, Dong-yeob HAN, Do-sik HWANG, Yong-sup PARK, Jong-buhm PARK, Jae-sung LEE
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Patent number: 9241671Abstract: Disclosed are an apparatus and a method for removing noise from biosignals. An embodiment of the invention provides an apparatus for removing noise from biosignals measured for a particular period of time that includes: a similarity calculating unit configured to calculate a similarity between any one biosignal from among the biosignals and other biosignals; and a noise removal unit configured to remove noise from the any one biosignal by using the similarity. Aspects of the invention provide the advantage of effectively removing noise from biosignals without distorting the waveforms of the biosignals.Type: GrantFiled: February 26, 2013Date of Patent: January 26, 2016Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Do-Sik Hwang, Ung Jang, Ji-han Kim
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Patent number: 9119546Abstract: A method of controlling of an R-peak detection apparatus, which detects an R-peak from an ElectroCardioGram (ECG) signal, includes receiving the ECG signal, reading out a pre-stored ECG template, comparing the EG signal with the pre-stored ECG template to determine a similarity between the ECG signal and the pre-stored ECG template and determining whether the similarity is equal to or greater than a threshold value, and determining a corresponding interval as the R-peak when the similarity is equal to or greater than the threshold value.Type: GrantFiled: December 21, 2012Date of Patent: September 1, 2015Assignee: Industry-Academic Cooperation Foundation Yonsei UniversityInventors: Sang-Hun Lee, Ji-Han Kim, Do-Sik Hwang, Ung Jang
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Publication number: 20150212176Abstract: Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes: a data acquisition unit configured to acquire a first k-space including a first missing line by undersampling an MR signal received from an object at a first time point, acquire a second k-space including a first acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a second time point, and acquire a third k-space including a second acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a third time point; and an image processor configured to interpolate data in the first missing line based on data in the first and second acquired lines.Type: ApplicationFiled: November 11, 2014Publication date: July 30, 2015Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Young-yoon LEE, Do-sik HWANG, Tae-joon EO, Jin-seong JANG, Hae-kyung JUNG, Dong-hyun KIM, Min-oh KIM, Na-rae CHOI, Dong-yeob HAN
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Publication number: 20150130461Abstract: Provided is a magnetic resonance imaging (MRI) apparatus.Type: ApplicationFiled: November 11, 2014Publication date: May 14, 2015Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Young-woon LEE, Jin-seong JANG, Do-sik HWANG, Tae-joon EO, Hae-kyung JUNG, Dong-hyun KIM, Min-oh KIM, Na-rae CHOI, Dong-yeob HAN
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Publication number: 20130245479Abstract: Disclosed are an apparatus and a method for removing noise from biosignals. An embodiment of the invention provides an apparatus for removing noise from biosignals measured for a particular period of time that includes: a similarity calculating unit configured to calculate a similarity between any one biosignal from among the biosignals and other biosignals; and a noise removal unit configured to remove noise from the any one biosignal by using the similarity. Aspects of the invention provide the advantage of effectively removing noise from biosignals without distorting the waveforms of the biosignals.Type: ApplicationFiled: February 26, 2013Publication date: September 19, 2013Applicant: Industry-Academic Cooperation Foundation Yonsei UniversityInventors: Do-Sik Hwang, Ung Jang, Ji-han Kim
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Publication number: 20110306869Abstract: An apparatus and method for producing tomographic image is disclosed. The disclosed apparatus for producing tomographic image comprises: an ultrasonic imaging unit configured to obtain multiple ultrasonic images of a subject; a tomographic imaging unit configured to obtain one or more tomographic image data of the subject; and a tomographic image correction unit configured to produce corrected tomographic image of a tomographic image which can be produced from the one or more tomographic image data by using the multiple ultrasonic images.Type: ApplicationFiled: June 15, 2011Publication date: December 15, 2011Applicant: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Do-Sik Hwang, Ji-Han Kim, Young-Jin Kim