Patents by Inventor Young Man Cho

Young Man Cho 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: 11567158
    Abstract: Disclosed is a beacon-based positioning system. A beacon position in which a beacon is installable is defined in a target space, and a path loss model of radio frequency (RF) signals between all beacon positions and all observation positions of a scanner is determined. Among all possible installation plans for the beacon positions, an installation plan in which different beacon signals, whose RSSIs calculated using the path loss model have significant values, are received in a number greater than or equal to a minimum reference number and a total number of the beacons installed is minimum is determined as an optimal installation plan. The optimization problem of determining the optimal installation plan may be expressed by binary linear programming.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: January 31, 2023
    Assignee: SOLiD, Inc.
    Inventors: Young Man Cho, Yvonne Hee Jun Cho
  • Patent number: 11570032
    Abstract: A TSN-based distributed antenna system including a headend unit, one or more TSN switches, and one or more remote units and a fronthaul transport network constituted by the headend unit, the TSN switch, and the remote unit is provided. The packet-based fronthaul network constituted by the headend unit, the TSN switch, and the remote unit transmits traffic in a time-deterministic manner while minimizing packet loss through Ethernet to which TSN standards are applied.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: January 31, 2023
    Assignee: SOLID, INC.
    Inventors: Dong Hee Kwon, Hoo Pyo Hong, Young Man Cho, Dae Young Kim, Hyun Jung Kim
  • Patent number: 11513049
    Abstract: A system for detecting microbes is provided.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: November 29, 2022
    Assignee: THE WAVE TALK, INC.
    Inventors: Young Dug Kim, Kyoung Man Cho
  • Publication number: 20220368815
    Abstract: A camera module includes a first circuit board on which the image sensor is mounted; a plurality of lens barrels spaced apart from the first circuit board; a carrier on which the plurality of lens barrels are mounted and configured to move along a plane intersecting an optical axis so as to align any one of the plurality of the lens barrel with the image sensor; an actuator configured to move the carrier to each of an optical axis direction and a direction intersecting the optical axis direction; and a housing receiving therein at least a portion of each of the lens barrels and the actuator.
    Type: Application
    Filed: May 12, 2022
    Publication date: November 17, 2022
    Inventors: Doo-Sik SHIN, Won-Man CHO, Young-Jin KIM, Ho-Seong CHU
  • Publication number: 20220326132
    Abstract: Provided is a water examination device including: a main body; a fluid accommodation unit formed in the main body; a wave source for irradiating waves toward the fluid accommodation unit; a detector for detecting a laser speckle at every set time period that is set in advance, the laser speckle being generated due to multiple scattering of the waves in the fluid; a controller for estimating existence of impurities in the fluid in real-time by using the detected laser speckle; and a calibration unit for controlling the wave source or the detector such that an intensity of light irradiated from the wave source and measured by the detector is within a certain range set in advance.
    Type: Application
    Filed: March 14, 2022
    Publication date: October 13, 2022
    Inventors: Young Dug KIM, Kyoung Man CHO
  • Publication number: 20220317104
    Abstract: Provided is a water examination device including: a main body; a cup accommodation unit formed inward from a surface of the main body such that a cup containing a fluid is accommodated therein; a wave source for irradiating a wave toward the cup accommodation unit; a detector for detecting a laser speckle generated when the irradiated wave is multiple-scattered in the fluid, at every time point set in advance; and a controller for estimating whether foreign substances exist in the fluid in real-time by using the detected laser speckle.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 6, 2022
    Inventors: Young-Dug KIM, Kyuong man CHO, Guk hyun NAM
  • Publication number: 20220311973
    Abstract: Provided is a security authentication method of a network video recorder (NVR) including assigning a terminal unique index to each of pseudo-random functions included in a pseudo-random function set using terminal information; transmitting a session key having a predetermined expiry time and the pseudo-random function set with the assigned terminal unique index to a terminal; calculating a first terminal unique index for authenticating a first message using a predetermined bitstream of the first message received from the terminal; selecting a first pseudo-random function for authenticating the first message using the calculated first terminal unique index; generating a first independent private key of the terminal for authenticating the first message by inputting the session key and a MAC address of the terminal to the first pseudo-random function; and generating a message authentication code for the first message using the first independent private key and authenticating the first message.
    Type: Application
    Filed: January 11, 2022
    Publication date: September 29, 2022
    Inventors: Young Sun PARK, Gyeng Che CHO, Su Man NAM, Jun Geol KIM, Jin Woo LEE
  • Patent number: 11391659
    Abstract: According to an embodiment of the present disclosure, provided is an optical detection system for detecting a laser speckle generated by multiple scattering of a wave irradiated toward a sample from a wave source, and based on a change in the laser speckle over time, detecting the presence of microbes in the sample in real time.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: July 19, 2022
    Assignee: THE WAVE TALK, INC.
    Inventors: Young Dug Kim, Seung Bum Yang, Kyoung Man Cho, Dong Jun Jeong, Nam Kyun Kim
  • Patent number: 11381311
    Abstract: An analog distributed antenna system having a set of small cells as a signal source is provided. A proposed cellular communication system includes an upper small cell unit including upper protocol processors configured to process an upper first part of a protocol stack of a small cell, a lower small cell unit including lower protocol processors configured to process a remaining second part of the protocol stack of the small cell, and a first matching switch configured to respectively match the lower protocol processors to a plurality of remote units. According to one aspect, the cellular communication system includes a common controller configured to control activation of the plurality of upper protocol processors of the upper small cell unit and the plurality of lower protocol processors of the lower small cell unit according to a required service capacity and appropriately control an operation of the first matching switch.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: July 5, 2022
    Assignee: SOLiD Inc.
    Inventors: Young Man Cho, Hee Hwan Kwak
  • Publication number: 20220141142
    Abstract: Disclosed is an OpenFlow based distributed antenna system (DAS) policy routing method. The DAS policy routing method includes: extracting, by a DAS unit, a match field from header information of a received frame; and comparing, by the DAS unit, the extracted match field with a matching rule of a forwarding table to route according to a matching traffic transmission policy and output a frame to an output port of the DAS unit.
    Type: Application
    Filed: January 16, 2022
    Publication date: May 5, 2022
    Applicant: SOLiD Inc.
    Inventors: Dong Hee KWON, Hoo Pyo HONG, Young Man CHO
  • Publication number: 20220086781
    Abstract: There is provided a method of processing uplink Ethernet packets of an aggregation node included in a distributed antenna system, the method includes: receiving a plurality of uplink Ethernet packets; summing the plurality of received uplink Ethernet packets; and transmitting the summed uplink Ethernet packets in an uplink direction.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 17, 2022
    Applicant: SOLiD, INC.
    Inventors: Dong Hee KWON, Hoo Pyo HONG, Yong Hoon KANG, Dae Young KIM, Young Man CHO
  • Publication number: 20220065973
    Abstract: Disclosed is a beacon-based positioning system. A beacon position in which a beacon is installable is defined in a target space, and a path loss model of radio frequency (RF) signals between all beacon positions and all observation positions of a scanner is determined. Among all possible installation plans for the beacon positions, an installation plan in which different beacon signals, whose RSSIs calculated using the path loss model have significant values, are received in a number greater than or equal to a minimum reference number and a total number of the beacons installed is minimum is determined as an optimal installation plan. The optimization problem of determining the optimal installation plan may be expressed by binary linear programming.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 3, 2022
    Applicant: SOLiD, Inc.
    Inventors: Young Man Cho, Yvonne Hee Jun Cho
  • Patent number: 11252092
    Abstract: Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: February 15, 2022
    Assignee: SOLiD Inc.
    Inventors: Dong Hee Kwon, Hoo Pyo Hong, Young Man Cho
  • Patent number: 11202268
    Abstract: There is provided a method of processing uplink Ethernet packets of an aggregation node included in a distributed antenna system, the method includes: receiving a plurality of uplink Ethernet packets; summing the plurality of received uplink Ethernet packets; and transmitting the summed uplink Ethernet packets in an uplink direction.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 14, 2021
    Assignee: SOLiD, INC.
    Inventors: Dong Hee Kwon, Hoo Pyo Hong, Yong Hoon Kang, Dae Young Kim, Young Man Cho
  • Publication number: 20210234746
    Abstract: A TSN-based distributed antenna system including a headend unit, one or more TSN switches, and one or more remote units and a fronthaul transport network constituted by the headend unit, the TSN switch, and the remote unit is provided. The packet-based fronthaul network constituted by the headend unit, the TSN switch, and the remote unit transmits traffic in a time-deterministic manner while minimizing packet loss through Ethernet to which TSN standards are applied.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 29, 2021
    Applicant: SOLiD, Inc.
    Inventors: Dong Hee KWON, Hoo Pyo HONG, Young Man CHO, Dae Young KIM, Hyun Jung KIM
  • Patent number: 11005699
    Abstract: A TSN-based distributed antenna system including a headend unit, one or more TSN switches, and one or more remote units and a fronthaul transport network constituted by the headend unit, the TSN switch, and the remote unit is provided. The packet-based fronthaul network constituted by the headend unit, the TSN switch, and the remote unit transmits traffic in a time-deterministic manner while minimizing packet loss through Ethernet to which TSN standards are applied.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: May 11, 2021
    Assignee: SOLID, INC.
    Inventors: Dong Hee Kwon, Hoo Pyo Hong, Young Man Cho, Dae Young Kim, Hyun Jung Kim
  • Publication number: 20210135788
    Abstract: A technology related to a distributed antenna system is disclosed. In an exemplary embodiment, a distributed antenna system may include a master unit and a plurality of remote units. The master unit may be interfaced with a wireless communications network and perform a bidirectional simultaneous digital radio frequency distribution of a wireless signal. The plurality of remote units may be each coupled to the master unit, and each perform a wireless transmission or reception of a split radio frequency signal to or from terminals located within a coverage. The master unit and the plurality of remote units may transmit or receive digital radio frequency signals in a wavelet transform domain. The master unit may determine whether the digital radio frequency signal, transmitted by each of the remote units, is normal, and merge the digital radio frequency signals.
    Type: Application
    Filed: January 14, 2021
    Publication date: May 6, 2021
    Applicant: SOLiD Inc.
    Inventor: Young Man CHO
  • Patent number: 10897327
    Abstract: A technology related to a distributed antenna system is disclosed. In an exemplary embodiment, a distributed antenna system may include a master unit and a plurality of remote units. The master unit may be interfaced with a wireless communications network and perform a bidirectional simultaneous digital radio frequency distribution of a wireless signal. The plurality of remote units may be each coupled to the master unit, and each perform a wireless transmission or reception of a split radio frequency signal to or from terminals located within a coverage. The master unit and the plurality of remote units may transmit or receive digital radio frequency signals in a wavelet transform domain. The master unit may determine whether the digital radio frequency signal, transmitted by each of the remote units, is normal, and merge the digital radio frequency signals.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: January 19, 2021
    Assignee: SOLID INC.
    Inventor: Young Man Cho
  • Publication number: 20210006497
    Abstract: Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.
    Type: Application
    Filed: September 21, 2020
    Publication date: January 7, 2021
    Applicant: SOLiD Inc.
    Inventors: Dong Hee KWON, Hoo Pyo HONG, Young Man CHO
  • Publication number: 20210006450
    Abstract: A TSN-based distributed antenna system including a headend unit, one or more TSN switches, and one or more remote units and a fronthaul transport network constituted by the headend unit, the TSN switch, and the remote unit is provided. The packet-based fronthaul network constituted by the headend unit, the TSN switch, and the remote unit transmits traffic in a time-deterministic manner while minimizing packet loss through Ethernet to which TSN standards are applied.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Applicant: SOLiD, Inc.
    Inventors: Dong Hee KWON, Hoo Pyo HONG, Young Man CHO, Dae Young KIM, Hyun Jung KIM