Patents by Inventor In-Kwang Kim

In-Kwang 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: 20230344533
    Abstract: A testing device determines an Effective Isotropic Radiated Power (EIRP) of a wanted signal at a beam-peak direction and a maximum Total Radiated Power (TRP) of the wanted signal. The testing device then determines a power difference (?P) between the EIRP of the wanted signal at the beam-peak direction and the maximum TRP of the wanted signal. The testing device determines EIRP of a spectral emission mask (SEM) at each measurement bandwidth step at the beam-peak direction. The testing device then determines TRP at each measurement bandwidth step by determining a difference between the EIRP of the SEM at that measurement bandwidth step and the power difference (?P). The testing device compares the TRP at each measurement bandwidth step to a SEM specification, and reports whether the SEM specification has been met.
    Type: Application
    Filed: January 24, 2023
    Publication date: October 26, 2023
    Inventors: Fucheng Wang, Fahmi L. Al Sabie, Vikas O. Jain, In Kwang Kim, Abhiram Rudrapatna Sridhar, Krishna Kalyanaraman, Ashwin Mohan, Anatoliy S. Ioffe
  • Patent number: 10750427
    Abstract: A repeater system for relaying wireless communications between a base station and one or more devices having: a repeater to relay network information from a base station to one or more devices; a donor antenna configured to receive and/or transmit network information between the repeater and the base station; a power supply external to the repeater; and, a server antenna integrated with the power supply, the server antenna configured to receive and/or transmit network information between the repeater and the one or more devices.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: August 18, 2020
    Assignee: NEXTIVITY, INC.
    Inventors: Michiel Petrus Lotter, Jason Foster Cook, Richard Jacques Fortier, In Kwang Kim, Ian Riphagen, James Xiaohui Qiu
  • Patent number: 9979460
    Abstract: An antenna system includes a donor antenna sub-system, a server antenna sub-system, and a processor to optimize the gain of the repeater in the system. The gain in the antenna system is increased by optimizing the isolation between the donor and/or server antenna sub-systems according to a cost function.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: May 22, 2018
    Assignee: Nextivity, Inc.
    Inventors: Michiel Petrus Lotter, Ian Riphagen, James Xiaohui Qiu, In Kwang Kim
  • Patent number: 9793974
    Abstract: An antenna system includes a donor antenna sub-system, a server antenna sub-system, and a processor to optimize the gain of the repeater in the system. The gain in the antenna system is increased by optimizing the isolation between the donor and/or server antenna sub-systems according to a cost function.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: October 17, 2017
    Assignee: Nextivity, Inc.
    Inventors: Michiel Petrus Lotter, Ian Riphagen, James Xiaohui Qiu, In Kwang Kim
  • Publication number: 20170041062
    Abstract: An antenna system includes a donor antenna sub-system, a server antenna sub-system, and a processor to optimize the gain of the repeater in the system. The gain in the antenna system is increased by optimizing the isolation between the donor and/or server antenna sub-systems according to a cost function.
    Type: Application
    Filed: October 18, 2016
    Publication date: February 9, 2017
    Inventors: Michiel Petrus Lotter, Ian Riphagen, James Xiaohui Qiu, In Kwang Kim
  • Publication number: 20160295495
    Abstract: A repeater system for relaying wireless communications between a base station and one or more devices having: a repeater to relay network information from a base station to one or more devices; a donor antenna configured to receive and/or transmit network information between the repeater and the base station; a power supply external to the repeater; and, a server antenna integrated with the power supply, the server antenna configured to receive and/or transmit network information between the repeater and the one or more devices.
    Type: Application
    Filed: April 6, 2016
    Publication date: October 6, 2016
    Inventors: Michiel Petrus Lotter, Jason Foster Cook, Richard Jacques Fortier, In Kwang Kim, Ian Riphagen, James Xiaohui Qiu
  • Publication number: 20150236776
    Abstract: An antenna system includes a donor antenna sub-system, a server antenna sub-system, and a processor to optimize the gain of the repeater in the system. The gain in the antenna system is increased by optimizing the isolation between the donor and/or server antenna sub-systems according to a cost function.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 20, 2015
    Inventors: Michiel Petrus Lotter, Ian Riphagen, James Xiaohui Qiu, In Kwang Kim
  • Publication number: 20130194186
    Abstract: Provided is a pointing data input method using a pointing device having a directional sensor for inputting pointing data accurately in an intended direction regardless of the bearing of the device, and a non-directional sensor. A device (100) includes DS (110), NDS (120), and a controller (130). The controller (130) controls pointing data on the basis of NDS data, and the pointing data is recognized by the DS (110) and is inputted based on a measured movement direction and distance. The controller (130) includes a comparator (132) for comparing the NDS data with the DS data, a modifier 134 for modifier (134) for modifying the DS data, and a means (136) for outputting the movement direction recognized by the NDS (120) as pointing data.
    Type: Application
    Filed: October 19, 2011
    Publication date: August 1, 2013
    Applicants: CARDCAM, CO., LTD.
    Inventors: Jae Sook Choi, In Kwang Kim, Young Pyo Hong
  • Patent number: 8489036
    Abstract: A mobile phone to transmit and receive a radio frequency signal through a first antenna and a second antenna in a radio communication system includes a first radio frequency signal receiving unit to convert the radio frequency signal received through the first antenna into a baseband signal to be transmitted to a controller, a second radio frequency signal receiving unit to convert the radio frequency signal received through the second antenna into a baseband signal to be transmitted to the controller, and a radio frequency signal transmitting unit to convert a baseband signal transmitted from the controller into a radio frequency signal, to distribute the radio frequency signal, and to selectively output the distributed radio frequency signal to the first antenna and the second antenna.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: July 16, 2013
    Assignee: Pantech Co., Ltd.
    Inventors: In Kwang Kim, Hong Woo Lee
  • Publication number: 20120322512
    Abstract: A mobile phone to transmit and receive a radio frequency signal through a first antenna and a second antenna in a radio communication system includes a first radio frequency signal receiving unit to convert the radio frequency signal received through the first antenna into a baseband signal to be transmitted to a controller, a second radio frequency signal receiving unit to convert the radio frequency signal received through the second antenna into a baseband signal to be transmitted to the controller, and a radio frequency signal transmitting unit to convert a baseband signal transmitted from the controller into a radio frequency signal, to distribute the radio frequency signal, and to selectively output the distributed radio frequency signal to the first antenna and the second antenna.
    Type: Application
    Filed: August 24, 2012
    Publication date: December 20, 2012
    Applicants: SK TELECOM CO., LTD, PANTECH CO., LTD.
    Inventors: In Kwang KIM, Hong Woo LEE
  • Patent number: 8275328
    Abstract: A mobile phone to transmit and receive a radio frequency signal through a first antenna and a second antenna in a radio communication system includes a first radio frequency signal receiving unit to convert the radio frequency signal received through the first antenna into a baseband signal to be transmitted to a controller, a second radio frequency signal receiving unit to convert the radio frequency signal received through the second antenna into a baseband signal to be transmitted to the controller, and a radio frequency signal transmitting unit to convert a baseband signal transmitted from the controller into a radio frequency signal, to distribute the radio frequency signal, and to selectively output the distributed radio frequency signal to the first antenna and the second antenna.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: September 25, 2012
    Assignees: Pantech Co., Ltd., SK Telecom Co., Ltd
    Inventors: In Kwang Kim, Hong Woo Lee
  • Publication number: 20110171951
    Abstract: A mobile phone to transmit and receive a radio frequency signal through a first antenna and a second antenna in a radio communication system includes a first radio frequency signal receiving unit to convert the radio frequency signal received through the first antenna into a baseband signal to be transmitted to a controller, a second radio frequency signal receiving unit to convert the radio frequency signal received through the second antenna into a baseband signal to be transmitted to the controller, and a radio frequency signal transmitting unit to convert a baseband signal transmitted from the controller into a radio frequency signal, to distribute the radio frequency signal, and to selectively output the distributed radio frequency signal to the first antenna and the second antenna.
    Type: Application
    Filed: March 22, 2011
    Publication date: July 14, 2011
    Applicants: PANTECH CO., LTD., SK TELECOM CO., LTD
    Inventors: In Kwang KIM, Hong Woo LEE
  • Patent number: 7929924
    Abstract: A mobile phone includes a controller; a receipt adjusting unit for controlling receipt of the (RF) radio frequency signal and controlling receipt diversity under control of the controller; a first RF signal receiver for converting the RF signal received through the first antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a second RF signal receiver for converting the RF signal received through the second antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a transmission diversity adjusting unit for controlling transmission diversity under control of the controller; and an RF signal transmitter for converting the baseband signal transmitted from the controller into an RF signal to be transmitted to the first antenna and transmitting the RF signal to the second antenna under control of the transmission diversity adjusting unit.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: April 19, 2011
    Assignees: Pantech Co. Ltd., SK Telecom Co., Ltd.
    Inventors: In Kwang Kim, Hong Woo Lee
  • Publication number: 20100062815
    Abstract: A mobile phone includes a controller; a receipt adjusting unit for controlling receipt of the (RF) radio frequency signal and controlling receipt diversity under control of the controller; a first RF signal receiver for converting the RF signal received through the first antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a second RF signal receiver for converting the RF signal received through the second antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a transmission diversity adjusting unit for controlling transmission diversity under control of the controller; and an RF signal transmitter for converting the baseband signal transmitted from the controller into an RF signal to be transmitted to the first antenna and transmitting the RF signal to the second antenna under control of the transmission diversity adjusting unit.
    Type: Application
    Filed: November 19, 2009
    Publication date: March 11, 2010
    Applicants: PANTECH CO., LTD., SK TELECOM CO., LTD
    Inventors: In Kwang KIM, Hong Woo LEE
  • Patent number: 7639991
    Abstract: A mobile phone includes a controller; a receipt adjusting unit for controlling receipt of the (RF) radio frequency signal and controlling receipt diversity under control of the controller; a first RF signal receiver for converting the RF signal received through the first antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a second RF signal receiver for converting the RF signal received through the second antenna into a baseband signal to be transmitted to the controller under control of the receipt adjusting unit; a transmission diversity adjusting unit for controlling transmission diversity under control of the controller; and an RF signal transmitter for converting the baseband signal transmitted from the controller into an RF signal to be transmitted to the first antenna and transmitting the RF signal to the second antenna under control of the transmission diversity adjusting unit.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: December 29, 2009
    Assignees: Pantech Co., Ltd., SK Telecom Co., Ltd.
    Inventors: In Kwang Kim, Hong Woo Lee
  • Patent number: 6308114
    Abstract: A robot apparatus for detecting a sound signal outputted from a sound signal generating unit to move to a position of the sound signal generating device, wherein the sound signal has a specific pattern, includes: at least three sound receiving unit (114) for receiving the sound signal; a phase difference detecting unit (118) for detecting a phase difference between each sound signal from the sound receiving unit (114); a processing unit (125) for determining a position of the sound generating unit using the phase difference, to generate a moving control signal; and a moving unit (130) for moving the robot apparatus in response to the moving control signal.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: October 23, 2001
    Inventor: In-Kwang Kim