Patents by Inventor Chang-geun Ahn

Chang-geun Ahn 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).

  • Patent number: 11403582
    Abstract: A logistics managing method according to example embodiments may include identifying at least one tote included in a tote set, identifying a station set corresponding to the tote set among at least one station set based on an attribute of an item included in the at least one tote, and determining one of the at least one station included in the station set to be a destination of the at least one tote. Other various embodiments are also possible.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: August 2, 2022
    Assignee: Coupang Corp.
    Inventors: Sang Ho Yim, Kyung Jae Lee, Sang Hee Ahn, Sang Ho Lee, Woong Kim, Chang Geun Jin, Lianxi Bai
  • Patent number: 11379786
    Abstract: Disclosed is an information providing method of an electronic apparatus. The information providing method includes identifying identification information of at least one item included in a set of items, and, based on the identification information of the at least one item, providing at least one of information associated with the packing material and information associated with the coolant, each information associated with the at least one item.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: July 5, 2022
    Assignee: Coupang Corp.
    Inventors: Sang Ho Yim, Sung Eun Kim, Jeong Seok Oh, Woong Kim, Chang Geun Jin, Zhijun Xu, Xiaohua Cui, Ji Won Hwang, In Sun Jang, In Woo Park, Ji Won Park, Eung Soo Lee, Kyung Jae Lee, Sang Hee Ahn
  • Publication number: 20220187262
    Abstract: Disclosed are a device and a method for anomaly detection of a gas sensor. The device includes a measuring unit that extracts a characteristic of a gas supplied from the outside, generates data based on the extracted characteristic, and outputs the data, and a data processing unit that receives the data, determines whether an error occurs in the data, and outputs an anomaly detection result based on a result of determining whether the error occurs in the data. The measuring unit performs a calibration operation or an environment adjusting operation before extracting the characteristic, and the data processing unit determines whether the error occurs in the data, based on machine learning.
    Type: Application
    Filed: October 28, 2021
    Publication date: June 16, 2022
    Inventors: YongWon JANG, Hwin Dol PARK, CHANG-GEUN AHN, Do Hyeun KIM, Seunghwan KIM, Hyung Wook NOH, Kwang Hyo CHUNG, Jae Hun CHOI
  • Publication number: 20220170900
    Abstract: Disclosed are a gas detection intelligence training system and an operating method thereof. The gas detection intelligence training system includes a mixing gas measuring device that collects an environmental gas from a surrounding environment, generates a mixing gas based on the collected environmental gas and a target gas, senses the mixing gas by using a first sensor array and a second sensor array under a first sensing condition and a second sensing condition, respectively, and generates measurement data based on the sensed results of the first sensor array and the second sensor array, and a detection intelligence training device including a processor that generates an ensemble prediction model based on the measurement data.
    Type: Application
    Filed: August 13, 2021
    Publication date: June 2, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Hun CHOI, Hwin Dol PARK, Chang-Geun AHN, Do Hyeun KIM, Seunghwan KIM, Hyung Wook NOH, YongWon JANG, Kwang Hyo CHUNG
  • Patent number: 11275479
    Abstract: Disclosed is an electronic device. The electronic device includes an impedance measuring unit including electrodes, that applies a first measurement signal of a first frequency to a user, obtains first biometric impedance data, based on first electrodes among the electrodes, and obtains second biometric impedance data, based on second electrodes among the electrodes, and a signal processor that extracts first feature data of the user, based on the first biometric impedance data and the second biometric impedance data. The first feature data may be based on a ratio between a value of the first biometric impedance data and a value of the second biometric impedance data.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: March 15, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyung Wook Noh, Joo Yong Sim, Chang-Geun Ahn
  • Patent number: 11255868
    Abstract: Provided is fluid control equipment for bio-reaction, including a pipette configured to transport a reaction solution, and a liquid pump configured to adjust the internal pressure of the pipette.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: February 22, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwang Hyo Chung, Bong Kyu Kim, Jin Tae Kim, Chang-Geun Ahn, Eun-Ju Jeong, Chul Huh
  • Publication number: 20210334348
    Abstract: A biometric authentication apparatus is provided. The biometric authentication apparatus includes one or more converters that convert a transmit signal of an electrical signal into a vibration signal of a mechanical signal and transmit the vibration signal vibrating within a set frequency range to a user, one or more sensor that receive a biometric signal corresponding to the vibration signal from the user and convert the biometric signal into a receive signal of an electrical signal, an authentication module that extracts anatomical feature information of the user from the receive signal and determines whether the user is a registered user based on the anatomical feature information, and a memory that stores a database for the registered user. The biometric signal is a frequency-based signal modified to include the anatomical feature information while the vibration signal passes through at least a portion of the body of the user.
    Type: Application
    Filed: April 23, 2021
    Publication date: October 28, 2021
    Inventors: Joo Yong SIM, Hyung Wook NOH, Chang-Geun AHN
  • Publication number: 20210333906
    Abstract: Disclosed is an electronic device. The electronic device includes an impedance measuring unit including electrodes, that applies a first measurement signal of a first frequency to a user, obtains first biometric impedance data, based on first electrodes among the electrodes, and obtains second biometric impedance data, based on second electrodes among the electrodes, and a signal processor that extracts first feature data of the user, based on the first biometric impedance data and the second biometric impedance data. The first feature data may be based on a ratio between a value of the first biometric impedance data and a value of the second biometric impedance data.
    Type: Application
    Filed: January 13, 2021
    Publication date: October 28, 2021
    Inventors: Hyung Wook NOH, Joo Yong SIM, Chang-Geun AHN
  • Patent number: 10807092
    Abstract: The present disclosure relates to a microfluidic control system and a microfluidic control method using the same. The microfluidic control system includes: a microfluidic chip including a storage chamber for storing a reaction solution and a receiving chamber communicating with the storage chamber; and a microfluidic control device for controlling the reaction solution inside the microfluidic chip, wherein the microfluidic control device includes: a first roller which is in contact with the microfluidic chip and rotates together with the movement of the microfluidic chip; and a pressurizing protrusion formed on the outer peripheral surface of the first roller, wherein the pressurizing protrusion has a shape corresponding to the storage chamber.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: October 20, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwang Hyo Chung, Jin Tae Kim, Eun-Ju Jeong, Bong Kyu Kim, Chang-Geun Ahn
  • Publication number: 20200159902
    Abstract: Provided is a personal authentication device based on an auditory brainstem response signal. The personal authentication device includes a signal generator, a signal acquirer, and a signal processor. The signal generator may output an auditory stimulus to an ear of a user, using a sound generator. The signal acquirer may acquire a first reference potential corresponding to a first interval, from a first electrode in close contact with the other ear of the user, and acquire a first evoked potential corresponding to the first interval from a second electrode in close contact with the ear, based on the first reference potential. The signal processor may generate a first auditory brainstem response signal, based on the first reference potential and the first evoked potential, generate authentication data for the user from the first auditory brainstem response signal, and compare the authentication data with registration data to authenticate the user.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 21, 2020
    Inventors: Hyung Wook NOH, Joo Yong SIM, Chang-Geun AHN, Bong Kyu KIM
  • Publication number: 20200047180
    Abstract: Provided is a centrifugal device. The centrifugal device includes a centrifugal part configured to provide an intermediate chamber into which a centrifugal object is put and a driving part disposed on a rotation axis passing through the intermediate chamber.
    Type: Application
    Filed: August 8, 2019
    Publication date: February 13, 2020
    Inventors: Kwang Hyo CHUNG, Chul HUH, Bong Kyu KIM, Jin Tae KIM, Hyung Wook NOH, Joo Yong SIM, Chang-Geun AHN, Eun-Ju JEONG
  • Publication number: 20200019690
    Abstract: Provided is a biometric authentication system for authenticating a user. The biometric authentication system includes an input function generator generating an input function for determining a first time interval in a transmission interval in which an input signal is transmitted to a user, a second time interval in the transmission interval, a first frequency of the first time interval, and a second frequency of the second time interval, an input signal generator transmitting the input signal having the first frequency during the first time interval and the second frequency during the second time interval, to the user, based on the input function, and an authenticator acquiring a biometric signal generated in response to the input signal from the user and determining whether the user is authenticated based on the biometric signal.
    Type: Application
    Filed: July 12, 2019
    Publication date: January 16, 2020
    Inventors: Joo Yong SIM, Hyung Wook NOH, Chang-Geun AHN
  • Publication number: 20190285625
    Abstract: A biosensor includes a solution chamber containing primary antibodies, secondary antibodies, and measuring substances, an injection fluid transfer unit for connection the solution chamber to an injection port, and a discharging transfer unit for connecting the solution chamber to a discharging port.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 19, 2019
    Inventors: Bong Kyu KIM, Chang-Geun AHN, Kwang Hyo CHUNG, Eun-Ju JEONG, Chul HUH, Seunghwan KIM, Jin Tae KIM, Won Kyoung LEE
  • Publication number: 20190250183
    Abstract: Provided is fluid control equipment for bio-reaction, including a pipette configured to transport a reaction solution, and a liquid pump configured to adjust the internal pressure of the pipette.
    Type: Application
    Filed: December 5, 2018
    Publication date: August 15, 2019
    Inventors: Kwang Hyo CHUNG, Bong Kyu KIM, Jin Tae KIM, Chang-Geun AHN, Eun-ju JEONG, Chul HUH
  • Publication number: 20190159705
    Abstract: A blood glucose prediction method comprising: acquiring a PAS signal by irradiating light to skin of the body, obtaining a photoacoustic image of the skin from the PAS signal, selecting at least one measurement location based on the photoacoustic image; and predicting the blood glucose based on a photoacoustic spectrum of a PAS signal corresponding to the at least one measurement location among the PAS signals, a blood glucose sensor, and a blood glucose prediction system are provided.
    Type: Application
    Filed: November 29, 2018
    Publication date: May 30, 2019
    Inventors: Joo Yong SIM, Chang-Geun AHN, Bong Kyu KIM, Eun-Ju JEONG, Kwang Hyo CHUNG, Chul HUH
  • Publication number: 20180264467
    Abstract: The present disclosure relates to a microfluidic control system and a microfluidic control method using the same. The microfluidic control system includes: a microfluidic chip including a storage chamber for storing a reaction solution and a receiving chamber communicating with the storage chamber; and a microfluidic control device for controlling the reaction solution inside the microfluidic chip, wherein the microfluidic control device includes: a first roller which is in contact with the microfluidic chip and rotates together with the movement of the microfluidic chip; and a pressurizing protrusion formed on the outer peripheral surface of the first roller, wherein the pressurizing protrusion has a shape corresponding to the storage chamber.
    Type: Application
    Filed: February 23, 2018
    Publication date: September 20, 2018
    Inventors: Kwang Hyo CHUNG, Jin Tae KIM, Eun-Ju JEONG, Bong Kyu KIM, Chang-Geun AHN
  • Publication number: 20180156755
    Abstract: Provided is an apparatus for detecting biomaterial and method of detecting biomaterial. The method include providing a sample including a fluorescent material and a biomaterial on one surface of an ultrasound receiving unit, and measuring an ultrasonic wave generated by the fluorescent material by emitting light to the sample.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 7, 2018
    Inventors: Eun-Ju JEONG, Bong Kyu KIM, Kwang Hyo CHUNG, Soo Jun PARK, Hyun Woo SONG, Joo Yong SIM, Chang-Geun AHN, Chul HUH
  • Publication number: 20170153206
    Abstract: Provided are a photo acoustic probe and a photo acoustic measurement device including the same. The photo acoustic probe includes a stage configured to receive a sample, a light source configured to provide light to the sample, a housing having an optical opening part and provided on the stage around the sample, a sound reception part disposed on one side inner wall of the housing to receive a sound induced from the sample, and a sound reflection part disposed in the optical opening part of the housing to transmit light and reflect sound to the sound reception part.
    Type: Application
    Filed: November 23, 2016
    Publication date: June 1, 2017
    Inventors: Joo Yong SIM, Bong Kyu KIM, Chang-Geun AHN
  • Publication number: 20170147864
    Abstract: Provided is a finger recognition device including a signal generating unit configured to generate a biometric signal, a signal detecting unit configured to receive the biometric signal via a finger and detect the biometric signal, and a finger recognition unit configured to compare the detected biometric signal with stored signal information to recognize the finger.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 25, 2017
    Inventor: CHANG-GEUN AHN
  • Patent number: 9650238
    Abstract: A vibration device including a supporting portion formed to cover both ends of a vibration region, and a method of manufacturing the vibration device are provided. The vibration device may include a lower substrate on which an insulating layer is formed, an upper substrate connected onto the insulating layer, and including a vibration region that vibrates and that is separated from the lower substrate by at least a predetermined distance, and a supporting portion formed to cover both ends of the vibration region, to support the vibration region.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: May 16, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: In Bok Baek, Han Young Yu, Yark Yeon Kim, Young Jun Kim, Chang Geun Ahn, Yong Sun Yoon, Bong Kuk Lee, Ji Eun Lim, Won Ick Jang