Patents by Inventor Dong In Kim

Dong In Kim 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: 20210126488
    Abstract: A method of energy harvester reconfiguration for a simultaneous wireless information and power transfer (SWIPT) receiver including receiving an input power from an RF signal, determining whether a Nblock-th energy block is activated based on a condition for operating the Nblock-th energy block having a maximum valid input power, among Nblock energy blocks each having a predetermined valid input power, in response to the Nblock-th energy block being determined activated, determining a number of energy harvesting circuits that are activated, among a plurality of energy harvesting circuits included in the Nblock-th energy block, based on power conversion efficiency, and reconfiguring power input in the Nblock-th energy block and the plurality of energy harvesting circuits included in the Nblock-th energy block, based on the determination and result of determination.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 29, 2021
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dong In KIM, Jong Ho MOON, Jong Jin PARK
  • Publication number: 20210119726
    Abstract: A method of performing adaptive mode switching in a transmitter of a dual mode simultaneous wireless information and power transmission (SWIPT) system, incudes receiving received power of a receiver in a channel; comparing the received power with a predetermined threshold value; selecting one of a single tone mode or a multi-tone mode as a single/multi-tone mode based on the comparison result; selecting a modulation index based on the selected single/multi-tone mode and the received power; and transmitting the selected single/multi-tone mode, the selected modulation index, and a duty cycle to the receiver. The duty cycle is determined based on at least one of power consumed for decoding a single tone signal, power consumed for decoding a multi-tone signal, and power harvested during the channel by the receiver.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 22, 2021
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dong In KIM, Jong Jin PARK, Jong Ho MOON, Kang Yoon LEE
  • Patent number: 10955711
    Abstract: Disclosed is a liquid crystal display device, including: a first substrate including a display area displaying an image, and a non-display area disposed in a form surrounding the display area; a second substrate spaced apart from the first substrate; and a liquid crystal layer disposed between the first substrate and the second substrate; and a first static electricity absorbing pattern disposed on the non-display area of the first substrate.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: March 23, 2021
    Inventors: Dong In Kim, Jin Kyu Park, Yo Han Lee, Ki Hoon Choi, Hyun Seok Hong
  • Patent number: 10892930
    Abstract: Provided are a communication method based on a peak-to-average ratio (PAPR) and a transmission apparatus and a receive apparatus using the same and a communication method based on a peak-to-average ratio (PAPR) by a transmission apparatus according to an exemplary embodiment of the present disclosure includes: obtaining each of PAPR values corresponding to respective data symbols from a lookup table having a unique PAPR value; Generating a synchronization signal configured in a random sequence based on a the PAPR value of each data symbol; and transmitting the synchronization signal.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: January 12, 2021
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Kang Yoon Lee, Muhammad Riaz Ur Rehman, Truong Thi Kim Nga, Ali Imran, Hamed Abbasi Zadeh, Kwan Tae Kim, Sang Yun Kim, Dong In Kim
  • Patent number: 10848239
    Abstract: A system for backscatter-based cooperative communication in a wireless-powered heterogeneous network includes a low-power access point, a hybrid access point, and Internet of Things (IoT) devices. The low-power access point transmits an unmodulated carrier. The hybrid access point is in communication with a primary device using a signal. Internet of Things (IoT) devices harvest energy of the unmodulated carrier and the signal, and each of the IoT devices sequentially transmits information to the hybrid access point through a bistatic backscatter communication-based cooperation mode or non-cooperation mode using the harvested energy.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: November 24, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Sung Hoon Kim
  • Publication number: 20200337849
    Abstract: Implant devices, systems, and methods are used to prevent post-surgical dislocation of a surgically reconstructed ball-and-socket joint, while retaining the patient's range of motion. The implant device can have a cup having a substantially hemispherical inner contour; a head at least partially inserted within the cup, the head having an outer contour that is generally spherically-shaped, and an elastic retainer with an inner contour that is at least a cross-sectional segment of a spherical shape having substantially a same radius as the inner contour of the cup, the elastic retainer being attachable over an open end of the cup to retain the head within the cup and allowing the outer contour of the head to freely rotate and/or pivot against the inner contour of the cup over the predetermined range of motion of the ball-and-socket joint.
    Type: Application
    Filed: April 21, 2020
    Publication date: October 29, 2020
    Inventors: Joella Marie Knopf, Samuel Reed Fox, Nathan Lawrence Lehr, Joshua Landon Brazda, Amy Michelle Bandy, Dong In Kim, George Grant Lane, III, Nicole Ann Spencer, Claire Elizabeth Vallery
  • Patent number: 10819164
    Abstract: The present disclosure relates to an adaptive mode switching method for simultaneous wireless power/information transmission operating in a dual mode and an apparatus for performing the same. The adaptive mode switching apparatus for simultaneous wireless power/information transmission operating in a dual mode includes: an energy harvesting unit; a single tone information receiving unit; a multi-tone information receiving unit; a time-division switch; and an adaptive mode switching control unit which determines a communication mode and a modulation index based on a battery status, the magnitude of the received signal, and a data transmission rate and controls the time-division switch in accordance with the selected communication mode and modulation index.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 27, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Jong Jin Park, Jong Ho Moon, Kang Yoon Lee
  • Publication number: 20200310491
    Abstract: The present disclosure relates to a case for a mobile device capable of activating a wireless charging function. The case for a mobile device according to the present disclosure includes a cover unit mounted on a mobile device to protect the mobile device, a first power source attaching part provided in the cover unit and attached to and detached from a power source device configured to wirelessly charge the mobile device, and a wireless charge activation part configured to perform charging of a battery of the mobile device when the power source device is recognized as being close to the mobile device.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Inventor: Dong In KIM
  • Patent number: 10708102
    Abstract: A simultaneous wireless information and power transmission method includes: transmitting an energy transfer signal comprising a peak-to-average power ratio (PAPR) corresponding to information to be transmitted at a first side; measuring the PAPR by receiving the energy transfer signal at a second side; and recovering the information from the measured PAPR at the second side.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 7, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Jong Ho Moon, Jong Jin Park, Kang Yoon Lee
  • Publication number: 20200202816
    Abstract: A display device includes a display panel, a timing controller for detecting a frame frequency of input data, for generating a control signal based on the frame frequency, and for generating frame data by converting the input data, and a source drive for variably amplifying the frame data based on the control signal, for generating a data signal based on the amplified frame data, and for providing the data signal to the display panel.
    Type: Application
    Filed: August 23, 2019
    Publication date: June 25, 2020
    Inventors: Dong In KIM, Jun Dal KIM
  • Publication number: 20200195062
    Abstract: A receiver that receives a simultaneous wireless information and power transfer (SWIPT) signal is provided. The receiver comprises an antenna configured to receive a SWIPT signal including a power signal and an information signal; an energy harvester configured to receive the SWIPT signal from the antenna when a communication mode is an energy harvesting (EH) mode; and an information decoder configured to receive the SWIPT signal from the antenna when the communication mode is an information decoding (ID) mode.
    Type: Application
    Filed: November 22, 2019
    Publication date: June 18, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In KIM, Jong Ho MOON, Jong Jin PARK, Kang Yoon LEE
  • Publication number: 20200169318
    Abstract: A system for backscatter-based cooperative communication in a wireless-powered heterogeneous network includes a low-power access point, a hybrid access point, and Internet of Things (IoT) devices. The low-power access point transmits an unmodulated carrier. The hybrid access point is in communication with a primary device using a signal. Internet of Things (IoT) devices harvest energy of the unmodulated carrier and the signal, and each of the IoT devices sequentially transmits information to the hybrid access point through a bistatic backscatter communication-based cooperation mode or non-cooperation mode using the harvested energy.
    Type: Application
    Filed: November 20, 2019
    Publication date: May 28, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In KIM, Sung Hoon KIM
  • Publication number: 20200107324
    Abstract: The present disclosure relates to a sparse-coded ambient backscatter communication method and a system. According to the sparse-coded ambient backscatter communication method, in an ambient backscatter system including an access point and a plurality of sensor nodes, each sensor node transmits a code word in a non-orthogonal multiple access (NOMA) manner using sparsity of a signal by a duty cycling operation and the access point detects a superimposed signal transmitted in the NOMA manner by an iterative decoding method in which a dyadic channel and intersymbol interference are reflected. The present disclosure may reduce the implementation cost by reducing the number of impedances required to modulate data of a batteryless sensor node in an Internet of Things environment and utilize the dyadic backscatter channel to detect a signal, thereby providing massive connectivity of the access point.
    Type: Application
    Filed: December 26, 2018
    Publication date: April 2, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Tae Yeong KIM, Dong In KIM
  • Publication number: 20200106308
    Abstract: The present disclosure relates to an adaptive mode switching method for simultaneous wireless power/information transmission operating in a dual mode and an apparatus for performing the same. The adaptive mode switching apparatus for simultaneous wireless power/information transmission operating in a dual mode includes: an energy harvesting unit; a single tone information receiving unit; a multi-tone information receiving unit; a time-division switch; and an adaptive mode switching control unit which determines a communication mode and a modulation index based on a battery status, the magnitude of the received signal, and a data transmission rate and controls the time-division switch in accordance with the selected communication mode and modulation index.
    Type: Application
    Filed: December 26, 2018
    Publication date: April 2, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In KIM, Jong Jin PARK, Jong Ho MOON, Kang Yoon LEE
  • Patent number: 10607563
    Abstract: A display device includes a timing controller, a driver, and a display panel. The timing controller outputs a first clock signal having first rising time during an active section and a second clock signal having second rising time during a blank section adjacent to the active section. The driver generates a data signal based on the first clock signal and the second clock signal and to output the data signal. The display panel displays an image based on the data signal. The first rising time is shorter than the second rising time.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: March 31, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong In Kim, Jin Kyu Park, Yo Han Lee, Ki Hoon Choi, Hyun Seok Hong
  • Publication number: 20200076662
    Abstract: Provided are a communication method based on a peak-to-average ratio (PAPR) and a transmission apparatus and a receive apparatus using the same and a communication method based on a peak-to-average ratio (PAPR) by a transmission apparatus according to an exemplary embodiment of the present disclosure includes: obtaining each of PAPR values corresponding to respective data symbols from a lookup table having a unique PAPR value; Generating a synchronization signal configured in a random sequence based on a the PAPR value of each data symbol; and transmitting the synchronization signal.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Kang Yoon LEE, Muhammad Riaz Ur REHMAN, Truong Thi Kim NGA, Ali IMRAN, Hamed Abbasi ZADEH, Kwan Tae KIM, Sang Yun KIM, Dong In KIM
  • Patent number: 10541567
    Abstract: Disclosed are a wireless power transfer apparatus, a wireless power receiving apparatus, a wireless power transfer method, a wireless power receiving method, a wireless power transfer system using a dual mode and a recording medium thereof.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: January 21, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Jong Jin Park, Jongho Moon, Kang Yoon Lee
  • Patent number: 10411519
    Abstract: A method for transmitting energy to a plurality of receiving nodes using a plurality of antennas includes: acquiring residual energy information of the receiving nodes and channel information between the antennas and the receiving nodes; determining a beamforming weight indicating a ratio between signals transmitted from the antennas and an awake ratio indicating a probability that the receiving nodes are in an active state to receive signals, based on the residual energy information and the channel information of each of the receiving nodes; generating beacon signals corresponding to the antennas based on either one or both of the beamforming weight and the awake ratio; and transmitting the beacon signals through the antennas.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: September 10, 2019
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Kae Won Choi, Dong In Kim
  • Publication number: 20190199136
    Abstract: A method for transmitting energy to a plurality of receiving nodes using a plurality of antennas includes: acquiring residual energy information of the receiving nodes and channel information between the antennas and the receiving nodes; determining a beamforming weight indicating a ratio between signals transmitted from the antennas and an awake ratio indicating a probability that the receiving nodes are in an active state to receive signals, based on the residual energy information and the channel information of each of the receiving nodes; generating beacon signals corresponding to the antennas based on either one or both of the beamforming weight and the awake ratio; and transmitting the beacon signals through the antennas.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 27, 2019
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Kae Won CHOI, Dong In KIM
  • Patent number: 10250316
    Abstract: A method using energy harvesting including receiving, by a relay node, first information signals transmitted from a source node and second information signals transmitted from a destination node, harvesting, by the relay node, energy using energy signals transmitted from the source node while bi-directionally relaying the first information signals and the second information signals; receiving, by the source node, information signals transmitted by the relay node; and receiving, by the destination node, the information signals relayed by the relay node. The source node, the relay node, and the destination node are devices for performing communication in a full-duplex mode.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: April 2, 2019
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Keum Cheol Hwang, Jong Ho Moon, Jong Jin Park