Patents by Inventor Kijoon Lee
Kijoon Lee 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).
-
Publication number: 20240057883Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.Type: ApplicationFiled: March 20, 2023Publication date: February 22, 2024Inventors: Kijoon Lee, Renzhe Bi, Jing Dong
-
Publication number: 20230148888Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.Type: ApplicationFiled: June 24, 2022Publication date: May 18, 2023Inventors: Kijoon LEE, Renzhe Bi, Jing Dong, Justin Dauwels
-
Publication number: 20220293072Abstract: Disclosed are a spiral curve type music sheet in which different notes are displayed at different positions on a spiral curve based on the pitches of notes, and an apparatus and method for providing a spiral curve type music sheet. The apparatus for providing a spiral curve type music sheet may include a memory configured to store a spiral curve type music sheet in which different notes are displayed at different positions on a spiral curve based on the pitch of the note and note data, and a processor configured to determine the note symbol position related to the note data on the spiral curve in the spiral curve type music sheet based on the frequency of the note data.Type: ApplicationFiled: September 15, 2021Publication date: September 15, 2022Applicant: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Kijoon LEE, Jun Tak NOH, Han Gyeol WOO, Jae Hyuk LEE, Hye Jun LEE, Ji Ho JANG, Jang Woo CHOO
-
Patent number: 11206990Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.Type: GrantFiled: January 14, 2014Date of Patent: December 28, 2021Inventors: Kijoon Lee, Renzhe Bi, Jing Dong
-
Publication number: 20210244295Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.Type: ApplicationFiled: April 29, 2021Publication date: August 12, 2021Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
-
Publication number: 20210180165Abstract: Disclosed herein are embodiments of an additive-containing alloy that exhibit improved strength, particularly at high temperatures, creep resistance, thermal fatigue resistance, and oxidation resistance. Also disclosed herein are embodiments of a method for making such additive-containing alloys, including methods whereby the additive component of such alloys can be selectively deposited according to a pre-designed pattern. Such method embodiments facilitate producing programmable alloy embodiments wherein the additive component can be provided in desired regions of the alloy and/or at desired concentrations within the alloy.Type: ApplicationFiled: February 22, 2021Publication date: June 17, 2021Applicant: Oregon State UniversityInventors: Somayeh Pasebani, S. Milad Ghayoor Baghbani, Brian K. Paul, Chih-hung Chang, Kijoon Lee, Yujuan He
-
Patent number: 11000200Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.Type: GrantFiled: February 22, 2019Date of Patent: May 11, 2021Assignee: Pedra Technology PTE LTDInventors: Kijoon Lee, Jing Dong, Renzhe Bi
-
Patent number: 10986144Abstract: A system to support collaboration among client devices on a network comprising: a storage device that includes a class data structure to associate a message object, a file object, and a task object; a message bus module to communicate over the network; a file module configured to associate a message a file object instance with at least one of a message object instance and a task object instance; a task module configured to associate a task object instance with at least one of a message object instance and a file object instance; and a message module configured to associate a message with at least one of a file object instance, and a task object instance.Type: GrantFiled: September 28, 2016Date of Patent: April 20, 2021Assignee: HealthLinx Technologies, Inc.Inventors: Kijoon Lee, Maksim Ustinov
-
Publication number: 20200093382Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.Type: ApplicationFiled: May 1, 2019Publication date: March 26, 2020Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
-
Publication number: 20200022595Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.Type: ApplicationFiled: February 22, 2019Publication date: January 23, 2020Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
-
Patent number: 10213122Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.Type: GrantFiled: May 1, 2017Date of Patent: February 26, 2019Assignee: Nanyang Technological UniversityInventors: Kijoon Lee, Jing Dong, Renzhe Bi
-
Publication number: 20180368705Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.Type: ApplicationFiled: February 8, 2018Publication date: December 27, 2018Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
-
Publication number: 20170311819Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.Type: ApplicationFiled: December 13, 2016Publication date: November 2, 2017Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
-
Publication number: 20170231510Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.Type: ApplicationFiled: May 1, 2017Publication date: August 17, 2017Inventors: Kijoon Lee, Jing Dong, Renzhe Bi
-
Patent number: 9636025Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.Type: GrantFiled: August 14, 2013Date of Patent: May 2, 2017Assignee: Nanyang Technological UniversityInventors: Kijoon Lee, Jing Dong, Renzhe Bi
-
Patent number: 9251585Abstract: A method for coregistration of multi-modal images obtained in different geometries includes acquiring multi-modal image data, wherein the multi-model image data includes image data of a first modality and image data of a second modality, wherein the image data of the respective modalities have different geometries, defining a volume of interest in the multi-modal image data, segmenting the image data of the first modality and incorporating segmentation data of the first modality into a reconstruction of the second modality, and applying a registration of the second modality image data to the first modality image data according to a similarity measure through the volume of interest, wherein an output of the registration comprises superimposed multi-modal image data.Type: GrantFiled: July 8, 2008Date of Patent: February 2, 2016Assignee: Siemens AktiengesellschaftInventors: Fred S. Azar, Arjun G. Yodh, Regine Choe, Kijoon Lee
-
Publication number: 20150073271Abstract: Disclosed herein are systems and methods for revascularization assessment. The methods can in some cases include one or more of the steps of measuring blood perfusion as a function of time to obtain time series data, mathematically transforming the time series data into a power spectrum, calculating at least one parameter of the power spectrum within a specific frequency range, and using the at least one calculated parameter as a discriminator for the first population and the second population.Type: ApplicationFiled: August 14, 2014Publication date: March 12, 2015Inventors: Kijoon Lee, Renzhe Bi, Jing Dong, Justin Dauwels
-
Publication number: 20140206980Abstract: Blood flow rates can be calculated using diffuse speckle contrast analysis in spatial and time domains. In the spatial domain analysis, a multi-pixel image sensor can be used to detect a spatial distribution of speckles in a sample caused by diffusion of light from a coherent light source that is blurred due to the movement of scatterers within the sample (e.g., red blood cells moving within a tissue sample). Statistical analysis of the spatial distribution can be used to calculate blood flow. In the time domain analysis, a slow counter can be used to obtain time-series fluctuations in light intensity in a sample caused by diffusion of light in the sample that is smoothened due to the movement of scatterers. Statistical analysis of the time-series data can be used to calculate blood flow.Type: ApplicationFiled: January 14, 2014Publication date: July 24, 2014Applicant: Nanyang Technological UniversityInventors: Kijoon Lee, Renzhe Bi, Jing Dong
-
Publication number: 20140052006Abstract: Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes.Type: ApplicationFiled: August 14, 2013Publication date: February 20, 2014Applicant: Nanyang Technological UniversityInventors: Kijoon Lee, Jing Dong, Renzhe Bi
-
Patent number: 8381063Abstract: Provided is a decoding apparatus and method based on a variable error correction value. The decoding method includes setting an initial normalized factor and a normalized factor correction value, initially updating a check node based on the initial normalized factor, and updating the check node based on a variable error correction value acquired by adding the initial normalized factor and the normalized factor correction value.Type: GrantFiled: December 15, 2008Date of Patent: February 19, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Euna Choi, Dae-Ig Chang, Kijoon Lee, Habong Jung