Patents by Inventor Sang-wook Kwon

Sang-wook Kwon 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: 9369007
    Abstract: Provided is an apparatus and method that may stably perform wireless transmission. According to one general aspect, a power supply for a wireless power transmitter may include: a detecting unit configured to detect voltage, current, or both supplied to a power amplifier (PA); a controller configured to determine power supplied to the PA based on the detected voltage, the detected current, or both, and to determine a reference current based on the determined power supplied to the PA; and a breaker configured to cut off the power supplied to the PA based on a comparison of current supplied to the PA and the reference current.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: June 14, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park, Jin Sung Choi
  • Publication number: 20160164344
    Abstract: A method and apparatus for controlling wireless power transmission are provided. An output power of a source device may be wirelessly transmitted to a target device via a resonator. The source device may detect a change in a current of the output power, and may request the target device to verify a state of the target device. The source device may determine a state of a wireless power transmission based on the change in the current and the state of the target device. The source device may control wireless power transmission based on the determined state of the wireless power transmission.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 9, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Yun KIM, Sang Wook KWON, Yun Kwon PARK, Young Tack HONG
  • Patent number: 9362983
    Abstract: Provided are a method and apparatus for controlling a resonance bandwidth in a wireless power transmission system. The apparatus may include a source resonator to transfer an electromagnetic energy to a target resonator, and a source resonance bandwidth setting unit to set a resonance bandwidth of the source resonator.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: June 7, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Eun Seok Park, Young Ho Ryu, Young-tack Hong
  • Patent number: 9355773
    Abstract: A leakage magnetic field shielding apparatus includes a resonator configured to counterbalance a leakage magnetic field generated when a source resonator and a target resonator resonate at a resonant frequency of the source resonator and the target resonator.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: May 31, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Hyun Park, Young Ho Ryu, Sang Wook Kwon, Ki Young Kim, Yun Kwon Park, Keum Su Song, Chi Hyung Ahn
  • Publication number: 20160150435
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). A communication method and apparatus using beamforming are provided. The method includes acquiring transmission beam specific, measurement information of a base station (BS) and measuring a reference signal (RS) transmitted through transmission beams of the BS according to the transmission beam specific, measurement information. The measurement information on each transmission beam is determined according to at least one of an elevation angle of the corresponding transmission beam, an azimuth of the corresponding transmission beam, a handover urgency, information on a handover failure, and information on a radio link failure (RLF). A mobile station (MS) may perform a measurement report or a handover process according to a result of the measurement.
    Type: Application
    Filed: November 25, 2015
    Publication date: May 26, 2016
    Inventors: Sang-Kyu BAEK, Young-Bin CHANG, Sang-Wook KWON, Young-Joong MOK, June HWANG
  • Patent number: 9350193
    Abstract: A method and apparatus to detect load fluctuation of a wireless power transmission are provided. A wireless power transmitter includes a resonator configured to wirelessly transmit, to a target device, an output power. The wireless power transmitter further includes a power detector configured to detect a current of the output power. The wireless power transmitter further includes a controller configured to detect a change in the current, and to detect a target load based on the change in the current. The target load includes a load of which the output power is applied thereto.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: May 24, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park, Eun Seok Park, Young Tack Hong, Ki Young Kim, Young Ho Ryu, Dong Zo Kim, Jin Sung Choi, Chang Wook Yoon
  • Patent number: 9347168
    Abstract: A reception (RX) node using mutual resonance includes a target resonator configured to receive power via mutual resonance with a source resonator; a controller configured to wake up in response to the received power, determine a point in time at which the controller woke up to be a point in time at which synchronization with other RX nodes is performed, and generate a data packet, and a sensor configured to wake up in response to the received power, sense information.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: May 24, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Zo Kim, Sang Wook Kwon, Ki Young Kim, Nam Yun Kim, Bong Chul Kim, Yun Kwon Park, Jae Hyun Park, Keum Su Song, Chi Hyung Ahn, Young Ho Ryu, Chang Wook Yoon, Byoung Hee Lee
  • Patent number: 9350201
    Abstract: A wireless power transmission device, a wireless power transmission control device, and a wireless power transmission method are provided. A coupling frequency between a source resonator and a target resonator is determined. A transmission frequency is controlled such that power is transmitted from the source resonator to the target resonator at the coupling frequency. Therefore, it is possible to maintain a high power transmission efficiency without using an additional matching circuit even when a distance between the source resonator and the target resonator is changed.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: May 24, 2016
    Assignees: Samsung Electronics Co., Ltd., SNU R&DB Foundation
    Inventors: Sang Wook Kwon, Eun Seok Park, Young-tack Hong, Sang Wook Nam, Jong Min Park, Yoon Goo Kim
  • Publication number: 20160134130
    Abstract: A high efficiency variable power transmitting apparatus outputs a variable power by modulating, with respect to a time axis, a high frequency signal having a constant amplitude by turning the high frequency signal ON and OFF, amplifying the variable power to satisfy a requested power level of a target device based on a supply voltage having a predetermined level, converting an alternating current (AC) voltage received from a power source to a direct current (DC) voltage, generating the supply voltage having the predetermined level based on the DC voltage, and providing the supply voltage having the predetermined level to the PA.
    Type: Application
    Filed: December 28, 2015
    Publication date: May 12, 2016
    Applicants: SAMSUNG ELECTRONICS CO., LTD., SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
    Inventors: Jin Sung Choi, Young Tack Hong, Sang Wook Kwon, Yun Kwon Park, Young Goo Yang, Eun Seok Park, Ki Young Kim, Young Ho Ryu, Nam Yun Kim, Dong Zo Kim
  • Patent number: 9337691
    Abstract: Provided is a wireless recharging set. A source unit including a source resonator may transmit power wirelessly in all directions, and a device may receive the transmitted wireless power regardless of location.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: May 10, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Ho Ryu, Eun Seok Park, Sang Wook Kwon, Young Tack Hong, Nam Yun Kim, Yun Kwon Park, Dong Zo Kim, Jin Sung Choi
  • Patent number: 9325196
    Abstract: A wireless charging apparatus includes a charging unit configured to transmit power wirelessly to a mobile device, and a power supply unit configured to supply power to the charging unit. The wireless charging apparatus further includes a connecting unit configured to connect the charging unit to the power supply unit such that a position and an angle of the charging unit are adjustable.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: April 26, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Hyun Park, Young Ho Ryu, Sang Wook Kwon, Ki Young Kim, Yun Kwon Park, Keum Su Song, Chi Hyung Ahn
  • Publication number: 20160105898
    Abstract: An apparatus and method for performing communication in a wireless power transmission system are provided. The apparatus includes a channel search unit configured to search for communication channels other than a channel used in wireless power transmission, and measure state information of the communication channels. The apparatus includes a channel determining unit configured to determine a communication channel available for communication with a target device based on the measured state information. The apparatus includes a communication unit configured to transmit an access instruction to the target device using the determined communication channel The apparatus includes a controller configured to determine whether to communicate with the target device using the determined communication channel based on whether a response signal corresponding to the access instruction is received.
    Type: Application
    Filed: November 30, 2015
    Publication date: April 14, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Yun KIM, Sang Wook KWON, Yun Kwon PARK
  • Publication number: 20160099579
    Abstract: A resonance power transmission system, and a method of controlling transmission and reception of a resonance power are provided. According to one embodiment, a method of controlling resonance power transmission in a resonance power transmitter may include: transmitting resonance power to a resonance power receiver, the resonance power having resonance frequencies which vary with respect to a plurality of time intervals; and receiving, from the resonance power receiver, information regarding the resonance frequency having the highest power transmission efficiency among the resonance frequencies used in the time intervals.
    Type: Application
    Filed: December 14, 2015
    Publication date: April 7, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Yun KIM, Sang Wook KWON, Yun Kwon PARK, Eun Seok PARK, Young Tack HONG, Young Ho RYU, Dong Zo KIM, Jin Sung CHOI
  • Publication number: 20160099577
    Abstract: Apparatuses, systems, and methods of wireless power transmission/reception are described. In one wireless power transmission/reception device, a planar resonator capable of generating magnetic fields has one or more ferrite members mounted thereon such that the magnetic fields generated by the planar resonator have an overall direction substantially tilted or parallel to its opening/face, i.e., to the plane of the planar resonator. In a wireless power reception device, the planar resonator generates magnetic fields and an induced current when being resonated by external magnetic fields; in a wireless power transmission device, the planar resonator generates magnetic fields when being supplied with power.
    Type: Application
    Filed: September 30, 2015
    Publication date: April 7, 2016
    Inventors: Jae-Hyun PARK, Young-Ho RYU, Kyu-Sub KWAK, Sang-Wook KWON, Do-Won KIM, Dong-Zo KIM, Keum-Su SONG, Chi-Hyung AHN
  • Patent number: 9306399
    Abstract: A wireless power transmission and charging system, and a communication method of the wireless power transmission and charging system are provided. In one embodiment, a resonance frequency control method of a wireless power transmitter may include: generating communication power used for communication in a plurality of target devices using a reference resonance frequency; transmitting communication power to the plurality of target devices; transmitting charging power to the plurality of target devices; and adjusting the reference resonance frequency based on a reflected wave of the charging power, the amount of power received by one or more of the target devices, the amount of the charging power, the transmission efficiency of the charging power, or any combination thereof.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: April 5, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park
  • Publication number: 20160094081
    Abstract: A wireless power transmitter is provided. The wireless power transmitter includes a power supply unit that supplies Alternating Current (AC) power having a predetermined voltage value, a rectification unit that is connected to the power supply unit, and rectifies the AC power, a voltage adjustment unit that is connected to the rectification unit, and adjusts a magnitude of an output voltage value of the rectified power, and outputs the adjusted power to a power transmission unit, the power transmission unit that generates the adjusted power output from the voltage adjustment unit as a signal in a form in which wireless power transmission is possible, and transmits the generated signal to a wireless power receiver, and a control unit that controls the magnitude of the output voltage value of the rectified power to be adjusted by the voltage adjustment unit in accordance with a predetermined criterion.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 31, 2016
    Inventors: Byoung-Hee LEE, Sang-Wook KWON, Ki-Young KIM, Ji-Hoon JUNG
  • Publication number: 20160080040
    Abstract: An apparatus and method for communication using a wireless power are provided. The apparatus includes an amplifier configured to amplify an input signal based on a power supplied to the amplifier. The apparatus further includes a control unit configured to detect a change in an impedance of a target device, and to change the power based on the change in the impedance. The apparatus further includes a demodulation unit configured to receive a message from the target device, and to demodulate the message based on the changed power.
    Type: Application
    Filed: November 2, 2015
    Publication date: March 17, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Yun KIM, Sang Wook KWON, Yun Kwon PARK, Eun Seok PARK, Young Tack HONG, Ki Young KIM, Young Ho RYU, Dong Zo KIM, Jin Sung CHOI, Chang Wook YOON
  • Patent number: 9287735
    Abstract: A wireless power transmission system and a multi-mode resonator in the wireless power transmission system are provided. The multi-mode resonator includes a transmission line portion including unit-cells, the unit-cells including respective ends connected to each other, and each of the unit-cells including a capacitor, an inductor connected in parallel to the capacitor, and a via. The multi-mode resonator further includes a ground conducting portion configured to provide an electrical ground to the transmission line portion through the via of each of the unit-cells.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: March 15, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Ho Ryu, Eun Seok Park, Sang Wook Kwon, Ki Young Kim, Nam Yun Kim, Dong Zo Kim, Byung Chul Park, Yun Kwon Park, Jae Hyun Park, Chang Wook Yoon, Jeong Hae Lee, Jin Sung Choi, Young Tack Hong
  • Patent number: 9272630
    Abstract: An electronic device and method for transmitting and receiving a wireless power are provided. An electronic device for transmitting and receiving wireless power may include a resonator configured to operate, based on a plurality of operating modes of the electronic device including a power reception mode, a relay mode, and a power transmission mode, wherein: (i) in the power reception mode, the resonator is configured to receive power from a wireless power transmitter, (ii) in the relay mode, the resonator is configured to relay power received from the wireless power transmitter to a wireless power receiver, and (iii) in the power transmission mode, the resonator is configured to transmit power to the wireless power receiver; and a path controller configured to control at least one electrical pathway of electronic device based on the operating mode.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 1, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Young Tack Hong, Sang Wook Kwon, Yun Kwon Park, Ki Young Kim, Young Ho Ryu, Dong Zo Kim, Jin Sung Chol, Chang Wook Yoon
  • Patent number: 9276433
    Abstract: Provided is a wirelessly charged robot cleaning system and a method for wirelessly charging a robot cleaner. The wirelessly charged robot may include a target resonator to receive a resonance power through energy-coupling with a source resonator of a wireless power transmitter, a wireless power receiving unit to convert the received resonance power into a rated voltage, and a battery controller to check the remaining capacity of the battery based and to charge the battery.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: March 1, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Eun Seok Park, Sang Wook Kwon, Young Tack Hong, Young Ho Ryu