Patents by Inventor Kiwan Choi

Kiwan Choi 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: 20230121329
    Abstract: Disclosed is an ultrasound diagnostic apparatus comprising: a display; a memory for storing one or more instructions; and a processor for executing the one or more instructions stored in the memory. The processor acquires a plurality of pieces of elastic data about an object, generates a plurality of elastic images on the basis of the plurality of pieces of elastic data, acquires quality information about each of the plurality of elastic images on the basis of the pieces of elastic data respectively corresponding to the plurality of elastic images, determines at least one recommended elastic image, for which to acquire an elasticity value, from among the plurality of elastic images on the basis of the quality information, and controls the display to display the at least one recommended elastic image that is determined.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 20, 2023
    Applicant: SAMSUNG MEDISON CO., LTD.
    Inventors: Jiyoung Park, Kiwan Choi, Jintaek Oh
  • Patent number: 11576654
    Abstract: Provided are a method and ultrasound diagnosis apparatus for measuring and displaying an elasticity of an object. The ultrasound diagnosis apparatus includes: a processor configured to obtain elasticity data of a measurement target region of an object, calculate elasticity values of a plurality of regions included in the measurement target region based on the elasticity data by using different calculating methods, and combine the calculated elasticity values of the plurality of regions to calculate a final elasticity value; and a display configured to display the final elasticity value.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 14, 2023
    Assignee: SAMSUNG MEDISON CO., LTD.
    Inventors: Kiwan Choi, Jiyoung Park
  • Publication number: 20190192120
    Abstract: Provided are a method and ultrasound diagnosis apparatus for measuring and displaying an elasticity of an object. The ultrasound diagnosis apparatus includes: a processor configured to obtain elasticity data of a measurement target region of an object, calculate elasticity values of a plurality of regions included in the measurement target region based on the elasticity data by using different calculating methods, and combine the calculated elasticity values of the plurality of regions to calculate a final elasticity value; and a display configured to display the final elasticity value.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicant: SAMSUNG MEDISON CO., LTD.
    Inventors: Kiwan CHOI, Jiyoung PARK
  • Patent number: 9649038
    Abstract: A method, medium, and apparatus for measuring a heart rate from blood flow in a blood vessel of a human body part, including: an amplifying circuit receiving a light signal reflected or penetrated from a human body part and generating a multi-stage amplified signal made up of a plurality of signals with a corresponding different gains; and a processor separating the multi-stage amplified signal into a plurality of channel signals having corresponding gains, reconfiguring the light signal using a channel signal selected among the plurality of channel signals and calculating the heart rate from the reconfigured light signal. Accordingly, it is possible to make an accurate measurement of a heart rate by minimizing effects of measuring environments. In addition, the apparatus, method, and medium are resistive to noise resulting from a movement of a human body part by comparing an optimum signal pattern and a correlation coefficient.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: May 16, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoungki Lee, Kiwan Choi, Sookwon Bang
  • Patent number: 7509213
    Abstract: There is provided an apparatus and method for correcting location information of a mobile body and a computer-readable recording medium storing at least a computer program for controlling the apparatus. The apparatus for correcting the location information of the mobile body, the location information regarding at least one of a location and an azimuth angle of the mobile body, includes a beam generator generating at least one beam; and a location information correcting unit receiving measured location information, sensing the generated beam, and correcting the received measured location information using the sensed beam, wherein the location information correcting unit is installed in the mobile body. Therefore, it is possible to easily correct location information of a mobile body using beams and more accurately correct the location information without accumulating errors, differently from a conventional dead reckoning system.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: March 24, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kiwan Choi, Hyoungki Lee
  • Publication number: 20060178815
    Abstract: There is provided an apparatus and method for correcting location information of a mobile body and a computer-readable recording medium storing at least a computer program for controlling the apparatus. The apparatus for correcting the location information of the mobile body, the location information regarding at least one of a location and an azimuth angle of the mobile body, includes a beam generator generating at least one beam; and a location information correcting unit receiving measured location information, sensing the generated beam, and correcting the received measured location information using the sensed beam, wherein the location information correcting unit is installed in the mobile body. Therefore, it is possible to easily correct location information of a mobile body using beams and more accurately correct the location information without accumulating errors, differently from a conventional dead reckoning system.
    Type: Application
    Filed: July 11, 2005
    Publication date: August 10, 2006
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kiwan Choi, Hyoungki Lee
  • Publication number: 20050215913
    Abstract: A method, medium, and apparatus for measuring a heart rate from blood flow in a blood vessel of a human body part, including: an amplifying circuit receiving a light signal reflected or penetrated from a human body part and generating a multi-stage amplified signal made up of a plurality of signals with a corresponding different gains; and a processor separating the multi-stage amplified signal into a plurality of channel signals having corresponding gains, reconfiguring the light signal using a channel signal selected among the plurality of channel signals and calculating the heart rate from the reconfigured light signal. Accordingly, it is possible to make an accurate measurement of a heart rate by minimizing effects of measuring environments. In addition, the apparatus, method, and medium are resistive to noise resulting from a movement of a human body part by comparing an optimum signal pattern and a correlation coefficient.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 29, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyoungki Lee, Kiwan Choi, Sookwon Bang