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).

  • Apparatus and method of matching in a source-target structure
    Patent number: 9583963
    Abstract: Provided is a source-target structure matching controlling apparatus and method that may perform matching control of a source-target structure while resonance power is transmitted and received through the source-target structure. The source-target structure matching controlling apparatus may include a target resonator to receive, from a resonance power transmitter, the resonance power through a magnetic-coupling, and a rectifier to rectify the resonance power to generate a DC voltage, and provide the DC voltage to a load. The source-target structure matching controlling apparatus may detect an impedance of the load and a variance in the impedance, and may transmit, to the resonance power transmitter, information associated with the variance in the impedance of the load.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: February 28, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Eun Seok Park, Sang Wook Kwon, Young Tack Hong, Young Ho Ryu
  • APPARATUS AND METHOD FOR SUPPORTING HANDOVER WITH MULTI-CONNECTIVITY IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20170055187
    Abstract: The present disclosure relates to 5th generation (5G) or pre-5G communication systems for supporting higher data transfer rates, following the 4th generation (4G) communication systems, such as long term evolution (LTE). A method for supporting handover with multi-connectivity in a wireless communication system is provided. The method includes sending a measurement report message including information of at least one small base station (eNB) to a macro cell eNB, receiving information of a new small eNB in a target cell from the macro cell eNB based on the measurement report message, and performing a random access procedure with the new small eNB in the target cell based on handover.
    Type: Application
    Filed: August 22, 2016
    Publication date: February 23, 2017
    Inventors: Hyun-Jeong KANG, Sang-Wook KWON, Kyung-Kyu KIM, Young-Joong MOK, Sang-Kyu BAEK, Anil AGIWAL, Young-Bin CHANG, June HWANG
  • Power converter in resonance power transmission system, and resonance power transmission apparatus
    Patent number: 9553456
    Abstract: A power converter for transmitting a resonance power is provided that includes: an input end that receives a direct current (DC) voltage of a predetermined level; a first power converter that converts the DC voltage of a predetermined level to an alternating current (AC) signal using a first switching pulse signal having substantially the same frequency as a resonant frequency; a second power converter that converts the DC voltage of a predetermined level to an AC signal using a second switching pulse signal having an opposite phase to the first switching pulse signal; a first short circuit that reduces or eliminates an odd harmonic of the AC signal outputted from the first power converter, and provides the AC signal; and a second short circuit that reduces or eliminates an odd harmonic of the AC signal outputted from the second power converter, and provides the AC signal.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: January 24, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Sung Choi, Sang Wook Kwon, Yun Kwon Park, Eun Seok Park, Young Tack Hong, Young Ho Ryu, Nam Yun Kim, Dong Zo Kim
  • APPARATUS AND METHOD FOR PROVIDING SERVICE IN VEHICLE TO EVERYTHING COMMUNICATION SYSTEM
    Publication number: 20170018187
    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 a long term evolution (LTE). A method for providing a service in a first device in a vehicle to everything (V2X) communication system is provided. The method includes transmitting a first message related to the service; receiving, from a second device, a second message notifying that the second device enters a zone related to the service; and transmitting, to the second device, a third message indicating that the first device confirms that the second device enters the zone.
    Type: Application
    Filed: July 14, 2016
    Publication date: January 19, 2017
    Inventors: Kyung-Kyu Kim, Hyun-Jeong Kang, Sang-Wook Kwon, Young-Joong Mok
  • Apparatus and method for wireless power reception, apparatus and method for wireless power transmission, and wireless power transmission system
    Patent number: 9543074
    Abstract: An apparatus and a method for receiving power wirelessly, and an apparatus and a method for transmitting power wirelessly are provided. The apparatus for transmitting power wirelessly includes: a source resonator configured to transmit power wirelessly to a target resonator through a mutual resonance with the target resonator; a power supply unit configured to supply power to the source resonator; and a matching unit configured to connect a passive device to the power supply unit in series or in parallel to match an output impedance of the power supply unit and an input impedance of the source resonator.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: January 10, 2017
    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
  • Wireless power transmission system, and method of controlling transmission and reception of resonance power
    Patent number: 9543766
    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: Grant
    Filed: December 14, 2015
    Date of Patent: January 10, 2017
    Assignee: 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
  • DEVICE AND METHOD FOR DISCOVERING SMALL CELL IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20170006531
    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). The purpose of the present disclosure is to discover a small cell in a wireless communication system. An operation of a terminal in the wireless communication system includes receiving a first signal for informing of existence of a small cell according to a first measurement period and attempting to detect the first signal and a second signal for informing of a service coverage of the small cell according to a second measurement period after detecting the first signal. In addition, the present disclosure also includes embodiments other than the embodiment described above.
    Type: Application
    Filed: November 19, 2014
    Publication date: January 5, 2017
    Inventors: Jung-Soo Jung, Hyun-Jeong Kang, Sang-Wook Kwon, Jong-Hyung Kwun, Suk-Won Kim, Sun-Heui Ryoo, Bong-Jhin Shin, Sung-Jin Lee
  • In-band data communication system using wireless power
    Patent number: 9509537
    Abstract: Provided is data transmission and reception that transmits and receives data using a wireless power between wireless power transmitter and a wireless power receiver. An in-band data communication apparatus using a wireless power may include a modulating unit configured to modulate data by mixing a predetermined signal and pulse signal-type data; a demodulating unit configured to detect reflected power generated due to impedance mismatching between a source resonator and a target resonator, and to demodulate received data based on a variance of the reflected power; a source resonance unit configured to transmit transmission power including the modulated data to the target resonator, and to receive the reflected power; and a controller to control the pulse signal-type data, and to control impedance matching between the source resonator and the target resonator.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: November 29, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park
  • Apparatus and method for wireless power transmission
    Patent number: 9509166
    Abstract: An apparatus and method for efficiently, wirelessly transmitting a power to a plurality of target devices are provided. A wireless power transmitter may include: a source resonator configured to wirelessly transmit energy to a target device with at least one target resonator, the energy being stored in a capacitor; and a feeding unit configured to generate an induced current flowing in the source resonator in the same direction as a direction of an input current flowing in a transmission line, the feeding unit being electrically connected to the capacitor and forming a closed loop with the source resonator.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: November 29, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Ho Ryu, Eun Seok Park, Sang Wook Kwon, Yun Kwon Park, Young Tack Hong, Ki Young Kim, Nam Yun Kim, Dong Zo Kim, Jin Sung Choi, Chang Wook Yoon
  • Wireless power transmission and charging system, and impedance control method thereof
    Patent number: 9509173
    Abstract: A wireless power transmission and charging system and method are provided. The wireless power may refer to energy that may be transferred from a wireless power transmitter to a wireless power receiver. The wireless power transmission and charging system may include a source device to wirelessly transmit power, and a target device to wirelessly receive power.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: November 29, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park
  • Wireless power transmission apparatus and wireless power reception apparatus
    Patent number: 9502174
    Abstract: A wireless power transmission apparatus includes a resonance unit including resonators and configured to form a magnetic resonant coupling with another resonator, and a feeding unit configured to transmit alternating current (AC) power to one of the resonators. The wireless power transmission apparatus further includes a controller configured to determine a value of a capacitor connected to one of the resonators, based on a magnitude of a magnetic field formed by the resonance unit.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: November 22, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki Young Kim, Sang Wook Kwon, Nam Yun Kim, Dong Zo Kim, Yun Kwon Park, Keum Su Song, Young Ho Ryu, Chang Wook Yoon, Jin Sung Choi
  • Wireless power transmission and reception system
    Patent number: 9502925
    Abstract: A wireless power transmission method and a wireless power transmitter are provided that may selectively transmit wireless power to a plurality of target devices. According to an aspect, a wireless power transmitter may include: a detecting unit configured to detect a plurality of target devices; a controller configured to determine a plurality of resonance frequencies between a source resonator and the plurality of detected target devices and to control the plurality of resonance frequencies to transmit the power to the plurality of detected target devices; and a source resonance unit configured to transmit the power to the plurality of detected target devices.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: November 22, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon
  • Wireless power transmission apparatus and method and wireless power reception apparatus
    Patent number: 9502923
    Abstract: A wireless power transmission apparatus includes a measurer configured to measure a value of a current flowing in a source resonator, a communication unit configured to receive a value of a charging current of a battery from a wireless power reception apparatus, and a power controller configured to control an amount of power to be transmitted by the source resonator based on either one or both of the value of the current measured by the measurer and the value of the charging current received by the communication unit. The value of the charging current of the battery varies as the battery is charged.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: November 22, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Ki Young Kim, Yun Kwon Park, Chi Hyung Ahn
  • WIRELESS POWER TRANSMISSION SYSTEM BASED ON CELL DIVISION
    Publication number: 20160336790
    Abstract: A wireless power transmission system based on cell division is provided. A communication and power control method of the wireless power transmission system, includes setting a magnetic coupling zone. The method further includes detecting a target device in the magnetic coupling zone. The method further includes transmitting a power to the target device. The method further includes adjusting an amount of the power based on a transmission efficiency of the power.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Eun Seok PARK, Sang Wook KWON, Ki Young KIM, Nam Yun KIM, Dong Zo KIM, Yun Kwon PARK, Young Ho RYU, Chang Wook YOON, Jin Sung CHOI, Young Tack HONG
  • Wireless power transmission system, and method of controlling resonance impedance and resonance frequency of wireless power transmission system
    Patent number: 9496718
    Abstract: A wireless power transmission system, and a method for controlling a resonance impedance and a resonance frequency of the wireless power transmission system are provided. According to one aspect, a wireless power transmitter may include: a power generator configured to generate tracking power using a resonance frequency, the tracking power being used for a resonance frequency tracking; a source resonator configured to transmit the tracking power to a target resonator; a mismatching detector configured to detect a mismatching between the target resonator and the source resonator; and a controller configured to adjust the resonance frequency, or an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: November 15, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park, Chang Wook Yoon
  • Source device and method for controlling magnetic field using two source resonators in wireless power transmission system
    Patent number: 9493084
    Abstract: A source device and a method for controlling a magnetic field using two source resonators in a wireless power transmission system are provided. A device configured to control a magnetic field, includes resonators configured to form the magnetic field to transmit power to another device. The device further includes a magnetic field shape determining unit configured to determine a shape of the magnetic field. The device further includes a phase changing unit configured to change a phase of at least one of the resonators to form the magnetic field in the determined shape.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: November 15, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki Young Kim, Eun Seok Park, Jin Sung Choi, Sang Wook Kwon, Nam Yun Kim, Dong Zo Kim, Yun Kwon Park, Young Ho Ryu, Chang Wook Yoon, Young Tack Hong
  • Protector of rectifier and wireless power receiver including protector
    Patent number: 9484737
    Abstract: A protector that protects a rectifier, and a wireless power receiver including the protector are provided. In one embodiment, a protector for an electronic device may include: a switch configured to control current flow to a rectifier of the electronic device; and a switch controller configured to: compare, with a predetermined threshold value, a voltage difference between an output voltage of the rectifier and a voltage of the electronic device; and transmit a control signal to the switch (i) to discontinue current flow to the rectifier when the voltage difference is greater than the predetermined threshold value, and (ii) to enable current flow to rectifier when the voltage difference is less than or equal to the predetermined threshold value.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: November 1, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Zo Kim, Sang Wook Kwon, Yun Kwon Park, Eun Seok Park, Young Tack Hong, Ki Young Kim, Young Ho Ryu, Nam Yun Kim, Jin Sung Choi
  • Apparatus and method for communication using wireless power
    Patent number: 9484985
    Abstract: An apparatus and method are described that may enable a target device to communicate with a source device using a wireless power. The communication apparatus receives a wireless power from a source resonator through a magnetic coupling between the source resonator and a target resonator. The communication apparatus transmits a message, and modulates the message based on the received wireless power and impedance mismatch between the source device and the target device. The communication apparatus controls the impedance mismatch by changing an impedance of the target device.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: November 1, 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
  • Apparatus for controlling resonance frequency of device subject to wireless power transmission interference and method thereof
    Patent number: 9480145
    Abstract: Provided is an apparatus and method to control a resonance frequency of a device subject to wireless power transmission interference. The apparatus and method include supplying power from a printed circuit board (PCB) to an integrated circuit (IC) during exposure to a wireless power transmission environment experiencing mutual resonance. The apparatus and method also include a resonance frequency of the PCB based on a change in the supply of power.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: October 25, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Wook Yoon, Sang Wook Kwon, Nam Yun Kim, Dong Zo Kim, Yun Kwon Park
  • WIRELESS POWER TRANSMISSION AND CHARGING SYSTEM, AND RESONANCE FREQUENCY CONTROL METHOD OF WIRELESS POWER TRANSMISSION AND CHARGING SYSTEM
    Publication number: 20160294223
    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: Application
    Filed: April 1, 2016
    Publication date: October 6, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Yun KIM, Sang Wook KWON, Yun Kwon PARK