Patents by Inventor Yeong Min JANG

Yeong Min JANG 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: 20220270285
    Abstract: Disclosed are a method and an apparatus for determining a vehicle location based on optical camera communication (OCC).
    Type: Application
    Filed: November 30, 2021
    Publication date: August 25, 2022
    Inventors: Yeong Min Jang, Md Osman Ali
  • Patent number: 11424163
    Abstract: Provided are a three-dimensional electronic device manufactured through a polymer frame solvent-plasticizing process and a method for manufacturing the three-dimensional electronic device including a polymer frame configured to have a planar figure-like shape so as to have a polygonal bottom and adjacent surfaces which are formed to be extended from respective edges of the bottom; and a flexible electronic device which is transferred to the polymer frame. The polymer frame is exposed to organic solvent vapor and has a change in Young's modulus.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: August 23, 2022
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Heung Cho Ko, Gi Gwan Kim, Hun Soo Jang, Seong Hyeon Kang, Yeong Min Kim, Seong Gwang Yoo, Jung Il Yoo
  • Patent number: 11417232
    Abstract: Disclosed is a method of providing user-customized learning content. The method includes: a step a of configuring a question database including one or more multiple-choice questions having one or more choice items and collecting choice item selection data of a user for the questions; a step b of calculating a modeling vector for the user based on the choice item data and generating modeling vectors for the questions according to each choice item; and a step c of calculating choice item selection probabilities of the user based on the modeling vectors of the user and the modeling vectors of the questions.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: August 16, 2022
    Assignee: RIIID INC.
    Inventors: Yeong Min Cha, Jae We Heo, Young Jun Jang
  • Publication number: 20220210352
    Abstract: An optical communication-based image processing system is disclosed. The system may include a transmitter having at least one light emitting element and a receiver having a rolling shutter camera. As the system is provided, a rolling shutter effect may be improved.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 30, 2022
    Inventors: Yeong Min JANG, AHMED MD FAISAL
  • Publication number: 20220166515
    Abstract: A device for transmitting a signal according to some embodiments of the present disclosure relates to a device for transmitting a signal using a hybrid waveform. The device may include a modulator configured to modulate an input signal and a signal transmitter configured to transmit the modulated final transmission signal through an LED light source, wherein the modulator is configured to modulate first information into a pulse signal based on frequency shift keying (FSK), and modulate second information into an orthogonal frequency division multiplexing (OFDM) signal, wherein the first information and the second information are different from each other and mix the pulse signal and the OFDM signal into one waveform to generate the final transmission signal.
    Type: Application
    Filed: April 21, 2021
    Publication date: May 26, 2022
    Inventors: Yeong Min Jang, Ngoc Huy Nguyen
  • Publication number: 20220166521
    Abstract: A communication device effectively transmits high-speed data while being less affected by restrictions of an environment by adjusting a communication channel depending on an optical communication environment.
    Type: Application
    Filed: June 29, 2021
    Publication date: May 26, 2022
    Inventors: Yeong Min Jang, Ngoc Huy Nguyen
  • Publication number: 20220166508
    Abstract: An optical communication system is disclosed. The present system includes a light emitting element array for optically transmitting bio-data of a person to be diagnosed, and an optical receiver for recognizing color of the light emitting element array by using an image sensor to acquire the bio-data of the person to be diagnosed. Accordingly, an untact diagnostic test may be performed.
    Type: Application
    Filed: November 24, 2021
    Publication date: May 26, 2022
    Inventors: Yeong Min JANG, AHMED MD FAISAL
  • Patent number: 11329727
    Abstract: A device for transmitting a signal according to some embodiments of the present disclosure relates to a device for transmitting a signal using a hybrid waveform. The device may include a modulator configured to modulate an input signal and a signal transmitter configured to transmit the modulated final transmission signal through an LED light source, wherein the modulator is configured to modulate first information into a pulse signal based on frequency shift keying (FSK), and modulate second information into an orthogonal frequency division multiplexing (OFDM) signal, wherein the first information and the second information are different from each other and mix the pulse signal and the OFDM signal into one waveform to generate the final transmission signal.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: May 10, 2022
    Assignee: KOOKMIN UNIV. IND. ACADEMY COOPERATION FOUNDATION
    Inventors: Yeong Min Jang, Ngoc Huy Nguyen
  • Patent number: 11088763
    Abstract: An optical wireless transmission device according to an embodiment of the present invention comprises: a modulation unit for receiving input of a first input signal and outputting a first output signal; and a light source control unit for controlling a first light source in accordance with the first output signal. The first output signal repeats “0” and “1” in a first phase during clock time if a binary value of the first input signal is 0, and repeats “0” and “1” in a phase opposite from the first phase during the clock time if a binary value of the first input signal is 1.
    Type: Grant
    Filed: December 31, 2017
    Date of Patent: August 10, 2021
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Yeong Min Jang, Van Trang Nguyen
  • Patent number: 11044017
    Abstract: An optical wireless transmission method according to an embodiment of the present invention comprises the steps of: a modulator receiving transmission data and a transmission image; the modulator generating a reference image on the basis of the transmission image; the modulator generating a data embedded image on the basis of the transmission data and the transmission image; and the transmitter sequentially transmitting the reference image and the data embedded image by means of a light source panel.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: June 22, 2021
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Yeong Min Jang, Van Trang Nguyen
  • Patent number: 11005564
    Abstract: Provided are a communication method and apparatus using a hybrid modulation scheme in a communication system. The communication node uses a hybrid modulation scheme in the communication system and includes a processor, a first light-emitting diode (LED) array configured to transmit a first signal by blinking a first LED set according to control of the processor, a second LED array configured to transmit a second signal by blinking a second LED set according to control of the processor, and a memory configured to store one or more instructions executed by the processor. Therefore, performance of the communication system can be improved.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: May 11, 2021
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Yeong Min Jang, Thieu Minh Duc
  • Publication number: 20210126713
    Abstract: An optical wireless transmission device according to an embodiment of the present invention comprises: a modulation unit for receiving input of a first input signal and outputting a first output signal; and a light source control unit for controlling a first light source in accordance with the first output signal. The first output signal repeats “0” and “1” in a first phase during clock time if a binary value of the first input signal is 0, and repeats “0” and “1” in a phase opposite from the first phase during the clock time if a binary value of the first input signal is 1.
    Type: Application
    Filed: December 31, 2020
    Publication date: April 29, 2021
    Inventors: Yeong Min JANG, Van Trang NGUYEN
  • Patent number: 10742318
    Abstract: An optical wireless communication apparatus includes: a modulator for generating a reference signal including periodically repeating binary zeros and ones, receiving an input of a first binary data signal, and outputting a second binary data signal, wherein the second binary data signal has the same frequency as the reference signal, and has the same phase as the reference signal when the first binary data signal comprises binary zeros and has an opposite phase to the reference signal when the first binary data signal comprises binary ones, or has the same phase as the reference signal when the first binary data signal comprises binary ones and has an opposite phase to the reference signal when the first binary data signal comprises binary zeros, and a transmitter for turning a first light source on or off according to the reference signal, and turning a second light source on or off according to the second binary data signal.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: August 11, 2020
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Yeong Min Jang, Van Trang Nguyen, Chang Hyun Hong
  • Publication number: 20200252131
    Abstract: An optical wireless transmission device according to an embodiment of the present invention comprises: a modulation unit for receiving input of a first input signal and outputting a first output signal; and a light source control unit for controlling a first light source in accordance with the first output signal. The first output signal repeats “0” and “1” in a first phase during clock time if a binary value of the first input signal is 0, and repeats “0” and “1” in a phase opposite from the first phase during the clock time if a binary value of the first input signal is 1.
    Type: Application
    Filed: December 31, 2017
    Publication date: August 6, 2020
    Inventors: Yeong Min JANG, Van Trang NGUYEN
  • Publication number: 20200235813
    Abstract: Provided are a communication method and apparatus using a hybrid modulation scheme in a communication system. The communication node uses a hybrid modulation scheme in the communication system and includes a processor, a first light-emitting diode (LED) array configured to transmit a first signal by blinking a first LED set according to control of the processor, a second LED array configured to transmit a second signal by blinking a second LED set according to control of the processor, and a memory configured to store one or more instructions executed by the processor. Therefore, performance of the communication system can be improved.
    Type: Application
    Filed: November 27, 2019
    Publication date: July 23, 2020
    Inventors: Yeong Min JANG, Thieu Minh Duc
  • Publication number: 20200145109
    Abstract: An optical wireless transmission method according to an embodiment of the present invention comprises the steps of: a modulator receiving transmission data and a transmission image; the modulator generating a reference image on the basis of the transmission image; the modulator generating a data embedded image on the basis of the transmission data and the transmission image; and the transmitter sequentially transmitting the reference image and the data embedded image by means of a light source panel.
    Type: Application
    Filed: December 13, 2017
    Publication date: May 7, 2020
    Inventors: Yeong Min JANG, Van Trang NGUYEN
  • Patent number: 10560188
    Abstract: The present invention relates to an image sensor communication (ISC) system and method for enabling communication between an LED and a rolling shutter camera using a rolling shutter modulation method. The image sensor communication system according to an embodiment of the present invention comprises: a coding unit for coding transmission data to be transmitted; an LED which is turned on/off according to the transmission data coded in the coding unit; a rolling shutter camera for continuously photographing, at each of a plurality of rows in a rolling shutter manner, on/off images according to the on/off of the LED; an image processing unit for generating brightness signals according to brightness values of the on/off images of the LED photographed at each of the plurality of rows by the rolling shutter camera; and a data extraction unit for extracting the transmission data from the brightness signals of the on/off images of the LED generated by the image processing unit.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: February 11, 2020
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Yeong Min Jang, Van Nguyen Trang, Chang Hyun Hong
  • Patent number: 10560193
    Abstract: A DSM-PSK optical wireless transmission method includes the steps of: receiving a binary data signal, allowing a modulator to convert the binary data signal into a global phase shift signal, generating a reference signal group including M number of pulse signals having the same period, the same duty ratio of d/M, mutually different phases, and a determined sequence, generating a data signal group including M number of pulse signals having a determined sequence, the pulse signals having been obtained by phase-shifting the reference signal group according to the global phase shift signal, flickering each light source of a reference light source group including M number of light sources having a determined sequence, according to each pulse signal of the reference signal group, and flickering each light source of a data light source group including M number of light sources having a determined sequence, according to each pulse signal of the data signal group.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: February 11, 2020
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Yeong Min Jang, Van Trang Nguyen, Chang Hyun Hong
  • Publication number: 20190356385
    Abstract: An optical wireless communication apparatus includes: a modulator for generating a reference signal including periodically repeating binary zeros and ones, receiving an input of a first binary data signal, and outputting a second binary data signal, wherein the second binary data signal has the same frequency as the reference signal, and has the same phase as the reference signal when the first binary data signal comprises binary zeros and has an opposite phase to the reference signal when the first binary data signal comprises binary ones, or has the same phase as the reference signal when the first binary data signal comprises binary ones and has an opposite phase to the reference signal when the first binary data signal comprises binary zeros, and a transmitter for turning a first light source on or off according to the reference signal, and turning a second light source on or off according to the second binary data signal.
    Type: Application
    Filed: November 28, 2016
    Publication date: November 21, 2019
    Inventors: Yeong Min JANG, Van Trang NGUYEN, Chang Hyun HONG
  • Publication number: 20190326997
    Abstract: A DSM-PSK optical wireless transmission method includes the steps of: receiving a binary data signal, allowing a modulator to convert the binary data signal into a global phase shift signal, generating a reference signal group including M number of pulse signals having the same period, the same duty ratio of d/M, mutually different phases, and a determined sequence, generating a data signal group including M number of pulse signals having a determined sequence, the pulse signals having been obtained by phase-shifting the reference signal group according to the global phase shift signal, flickering each light source of a reference light source group including M number of light sources having a determined sequence, according to each pulse signal of the reference signal group, and flickering each light source of a data light source group including M number of light sources having a determined sequence, according to each pulse signal of the data signal group.
    Type: Application
    Filed: November 28, 2016
    Publication date: October 24, 2019
    Inventors: Yeong Min JANG, Van Trang NGUYEN, Chang Hyun HONG