Patents by Inventor Young-Tack An

Young-Tack An 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).

  • WIRELESS POWER TRANSMISSION AND CHARGING SYSTEM AND METHOD THEREOF
    Publication number: 20120281547
    Abstract: A wireless power transmission and charging system is provided. The wireless power transmission and charging system may include a source device to wirelessly transmit a power, and a target device to wirelessly receive the power. A communication error may be reduced, and a power transmission efficiency may be increased, by performing communication between the source device and the target device using a shortened packet generated by converting, for example, a packet of a byte scale to a packet of a bit scale.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 8, 2012
    Inventors: Nam Yun KIM, Chang Ho LEE, Sang Wook KWON, Yun Kwon PARK, Young Tack HONG
  • APPARATUS AND METHOD FOR HIGH EFFICIENCY VARIABLE POWER TRANSMISSION
    Publication number: 20120235507
    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: February 15, 2012
    Publication date: September 20, 2012
    Applicants: Sungkyunkwan University Foundation for Corporate Collaboration, Samsung Electronics Co., Ltd.
    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
  • SYSTEM FOR WIRELESS POWER TRANSMISSION AND RECEPTION
    Publication number: 20120231731
    Abstract: A wireless power transmitter and receiver, and related methods are provided. In one embodiment, a wireless power receiver may include: a receiving unit configured to receive wireless power from a source resonator; a detecting unit configured to detect a current value, a voltage value, or both of the wireless power; a controller configured to determine whether the detected current value, the detected voltage value, or both have a peak value, in a relation to a load which the wireless power is to be transmitted to; and a communication unit configured to transmit a result of the determination to the source resonator.
    Type: Application
    Filed: August 19, 2011
    Publication date: September 13, 2012
    Inventors: Nam Yun KIM, Sang Wook Kwon, Young Tack Hong, Dong Zo Kim
  • WIRELESS POWER TRANSMISSION SYSTEM AND RESONATOR FOR THE SYSTEM
    Publication number: 20120217820
    Abstract: Provided is a wireless power resonator. The wireless power resonator may include a transmission line and a capacitor, may form a loop structure, and may further include a matcher to determine an impedance of the wireless power resonator.
    Type: Application
    Filed: July 6, 2010
    Publication date: August 30, 2012
    Inventors: Young Tack Hong, Jung Hae Lee, Sang Wook Kwon, Eun Seok Park, Jae Hyun Park, Byung Chul Park
  • METHOD AND APPARATUS FOR CONTROLLING WIRELESS POWER TRANSMISSION AND RECEPTION, AND WIRELESS POWER TRANSMISSION SYSTEM
    Publication number: 20120202435
    Abstract: Provided are a transmission system and a wireless power transmission and reception controlling method. According to an embodiment, a wireless power receiver may include: a target communication unit configured to receive, from a wireless power transmitter, a wake-up request signal and synchronization information with respect to wireless power transmission, and to transmit a response signal with respect to the wake-up request signal to the wireless power transmitter; a load path switch configured to activate based on timing information included in the synchronization information; and a target resonator configured to receive wireless power from a source resonator of the wireless power transmitter, when the load path switch is activated.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 9, 2012
    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
  • APPARATUS AND METHOD FOR WIRELESS POWER TRANSMISSION
    Publication number: 20120193996
    Abstract: A source resonator for wirelessly transmitting power to a target device may include a magnetic field distribution adjusting unit that is configured to adjust the magnetic field generated by the source resonator. In one or more embodiments, the magnetic field distribution adjusting unit may adjust the magnetic field to be substantially uniform in a predetermined vicinity of the source resonator. For example, the magnetic field distribution adjusting unit may adjust the intensity of the magnetic field near the center of the source resonator to be substantially the same as the intensity of the magnetic field near an edge area of the source resonator.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 2, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Ho Ryu, Eun Seok Park, Jeong Hae Lee, Sang Wook Kwon, Yun Kwon Park, Young Tack Hong, Ki Young Kim, Nam Yun Kim, Dong Zo Kim, Jin Sung Choi, Jae Huyn Park, Byung Chul Park
  • WIRELESS POWER TRANSMISSION SYSTEM AND RESONATOR FOR THE SYSTEM
    Publication number: 20120193997
    Abstract: Provided is a wireless power resonator. The wireless power resonator, including a transmission line and a capacitor, may form a loop structure, and may additionally include a matcher to determine an impedance of the wireless power resonator.
    Type: Application
    Filed: July 6, 2010
    Publication date: August 2, 2012
    Inventors: Young Tack Hong, Jung Hae Lee, Sang Wook Kwon, Eun Seok Park, Jae Hyun Park, Byung Chul Park
  • DIRECT CURRENT/ DIRECT CURRENT CONVERTER FOR REDUCING SWITCHING LOSS, WIRELESS POWER RECEIVER INCLUDING DIRECT CURRENT/ DIRECT CURRENT CONVERTER
    Publication number: 20120155133
    Abstract: Provided are a direct current/direct current (DC/DC) converter and a wireless power receiver including the DC/DC converter. In one embodiment, a direct current-direct current (DC/DC) converter for use in a wireless power receiver, the DC/DC converter may include: a voltage converting unit configured to convert, DC voltage, to a predetermined DC voltage; a turn-on switch configured to control current flow of the DC voltage through the voltage converting unit; and a switching controller configured to: detect an amount of current of the voltage converting unit based on a first turn-on period of the turn-on switch, set a second turn-on period of the turn-on switch based on the detected amount of current, and control the turn-on switch based on the second turn-on period.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 21, 2012
    Inventors: Dong Zo KIM, Young Tack HONG, Young Jin MOON, Sang Wook KWON, Yun Kwon PARK, Chang Sik YOO, Eun Seok PARK, Ki Young KIM, Young Ho RYU, Nam Yum KIM, Jin Sung CHOI, Yong Seong ROH
  • HIGH EFFICIENCY RECTIFIER, WIRELESS POWER RECEIVER INCLUDING THE RECTIFIER
    Publication number: 20120155134
    Abstract: A high efficiency rectifier and a wireless power receiver including the rectifier are provided. In one embodiment, a rectifier may be formed of a full bridge diode circuit and may include: a first dual diode, a second dual diode, a third dual diode and a fourth dual diode forming the full bridge diode circuit, the full bridge diode circuit including: a first path configured to output voltage when the phase of an input voltage is positive, via the first dual diode and the fourth dual diode; and a second path configured to output voltage when the phase of the input voltage is negative, via the second dual diode and the third dual diode. In another embodiment, a rectifier may include: at least two full bridge diode circuits connected in parallel.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    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
  • PROTECTOR OF RECTIFIER AND WIRELESS POWER RECEIVER INCLUDING PROTECTOR
    Publication number: 20120153903
    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: Application
    Filed: December 15, 2011
    Publication date: June 21, 2012
    Applicant: 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
  • MEMS switch
    Patent number: 8198785
    Abstract: A Micro Electro Mechanical System (MEMS) switch includes a substrate, a fixed signal line formed on the substrate, a movable signal line spaced apart from one of an upper surface and a lower surface of the fixed signal line, and at least one piezoelectric actuator connected to a first end of the movable signal line so as to bring or separate the movable signal line in contact with or from the fixed signal line. The piezoelectric actuator includes a first electrode, a piezoelectric layer formed on the first electrode, a second electrode formed on the piezoelectric layer, and a connecting layer formed on the second electrode and connected with the movable signal line.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: June 12, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-tack Hong, Dong-kyun Kim, In-sang Song, Sang-hun Lee, Sang-wook Kwon, Jong-seok Kim, Che-heung Kim
  • WIRELESS POWER TRANSMISSION SYSTEM, AND METHOD OF CONTROLLING TRANSMISSION AND RECEPTION OF RESONANCE POWER
    Publication number: 20120112554
    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: November 10, 2011
    Publication date: May 10, 2012
    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
  • ROOF TYPE CHARGING APPARATUS USING RESONANT POWER TRANSMISSION
    Publication number: 20120056579
    Abstract: Provided is a roof-type charging apparatus that charges multi-target device, while transmitting a resonance power. A roof-type charging apparatus using resonance power transmission includes a source resonance unit configured to transmit resonance power including a source resonator having a generally planar loop configuration and defining a space therein; a receiving unit configured to receive the resonance power transmitted from the source resonator; and a connecting unit configured to separate the source resonator and the receiving unit by a predetermined distance.
    Type: Application
    Filed: August 15, 2011
    Publication date: March 8, 2012
    Inventors: Dong Zo KIM, Sang Wook Kwon, Yun Kwon Park, Eun Seok Park, Young Tack Hong, Young Ho Ryu, Nam Yun Kim, Jin Sung Choi
  • POWER CONVERTER IN RESONANCE POWER TRANSMISSION SYSTEM, AND RESONANCE POWER TRANSMISSION APPARATUS
    Publication number: 20120056487
    Abstract: A power converter which may be used in a resonance power transmission system and an apparatus for transmitting a resonance power are provided.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 8, 2012
    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
  • WIRELESS POWER TRANSMITTER AND METHOD THAT TRANSMITS RESONANCE POWER USING MULTIPLE BANDS
    Publication number: 20120049647
    Abstract: A wireless power transmitter that transmits a resonance power via a multi-band resonator and a method thereof are provided. According to an aspect, a wireless power transmitter may include: a source unit configured to generate resonance power; a power amplifying unit configured to amplify the resonance power; and a multi-band resonance unit including at least two resonators, the at least two resonators configured to transmit the amplified resonance power to target resonators using different resonance bands.
    Type: Application
    Filed: August 26, 2011
    Publication date: March 1, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Zo KIM, Sang Wook KWON, Yun Kwon PARK, Eun Seok PARK, Young Tack HONG, Young Ho RYU, Nam Yun KIM, Jin Sung CHOI
  • RESONANCE POWER TRANSMISSION SYSTEM BASED ON POWER TRANSMISSION EFFICIENCY
    Publication number: 20120049644
    Abstract: A resonance power transmission system for controlling a supply voltage of a power converter based on power transmission efficiency is provided. According to an aspect, a resonance power transmitter configured to transmit resonance power to one or more resonance power receivers may include: a voltage controller configured to receive an input signal and to output voltage of a predetermined level; a source controller configured to control a signal level of the DC voltage based the number of resonance power receivers.
    Type: Application
    Filed: August 17, 2011
    Publication date: March 1, 2012
    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
  • ACTIVE RECTIFIER WITH DELAY LOCKED LOOP, WIRELESS POWER RECEIVING APPARATUS INCLUDING ACTIVE RECTIFIER
    Publication number: 20120051109
    Abstract: An active rectifier and a wireless power receiver including the active rectifier are provided. According to an aspect, an active rectifier may include: a first loop configured to provide voltage when the phase of an input signal is positive; and a second loop configured to provide voltage when the phase of the input signal is negative, wherein the first loop and the second loop include a delay locked loop configured to compensate for reverse current leakage due to a delay of a switch included therein.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 1, 2012
    Inventors: Dong Zo KIM, Young Tack Hong, Jin Sung Choi, Young Jin Moon, Sang Wook Kwon, Yun Kwon Park, Chang Sik Yoo, Eun Seok Park, Ki Young Kim, Young Ho Ryu, Nam Yun Kim, Yong Seong Roh
  • ADAPTIVE RESONANCE POWER TRANSMITTER
    Publication number: 20120049648
    Abstract: Provided is an apparatus and method for adaptively adjusting an amount of a power to be wirelessly transmitted. In one embodiment, an adaptive resonance power transmitter may include: a source resonator configured to transmit resonance power to a resonance power receiver; a power amplifier configured to amplify a source power to a power level used by the resonance power receiver, the power amplifier comprising a matching network configured to match an impedance of the power amplifier to a predetermined impedance; and an adaptive matcher configured to adaptively match an impedance of the matching network with an impedance of the source resonator, based on the power level.
    Type: Application
    Filed: August 30, 2011
    Publication date: March 1, 2012
    Inventors: Jin Sung CHOI, Sang Wook Kwon, Yun Kwon Park, Eun Seok Park, Young Tack Hong, Ki Young Kim, Young Ho Ryu, Nam Yun Kim, Dong Zo Kim
  • METHOD AND APPARATUS OF TRACKING OF RESONANT IMPEDANCE IN RESONANCE POWER TRANSFER SYSTEM
    Publication number: 20120049861
    Abstract: A resonance power transfer system and a method for tracking resonant impedance in the resonance power transfer system are provided. An apparatus for tracking resonant impedance in a resonance power transfer system may include: a load sensor configured to detect the impedance of a load connected to a target device that receives resonance power; a target reflection signal detector configured to detect a reflection signal corresponding to the resonance power; a target impedance tracking unit configured to track the resonant impedance by adjusting a determination factor of a resonant frequency; and a target control unit configured to control the tracking of the resonant impedance based on whether there is a change of the impedance of the load, the reflection signal is detected, or both.
    Type: Application
    Filed: August 16, 2011
    Publication date: March 1, 2012
    Inventors: Nam Yun Kim, Sang Wook Kwon, Eun Seok Park, Young Tack Hong, Young Ho Ryu
  • APPARATUS AND METHOD OF MATCHING IN A SOURCE-TARGET STRUCTURE
    Publication number: 20110266880
    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: Application
    Filed: April 26, 2011
    Publication date: November 3, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Eun Seok Park, Sang Wook Kwon, Young Tack Hong, Young Ho Ryu