Patents by Inventor Gyunghwan YOOK
Gyunghwan YOOK 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).
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Patent number: 11223242Abstract: The present invention relates to an apparatus and a method for performing communication in a wireless power transmission system. The present specification discloses a wireless power transmission apparatus comprising: a communication/control unit configured to perform negotiation on a first available power index with a wireless power reception apparatus; and a power conversion unit configured to create magnetic coupling of a primary coil according to the first available power index, and transmit power wirelessly to the wireless power reception apparatus. The wireless power transmission apparatus can properly adjust an available power index in a dynamic manner at a time point desired by itself according to a surrounding environment/situation, and leadingly initiate communication and authentication.Type: GrantFiled: August 24, 2018Date of Patent: January 11, 2022Assignee: LG ELECTRONICS INC.Inventors: Yongcheol Park, Gyunghwan Yook
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Publication number: 20210408838Abstract: The present invention relates to a device and a method for performing authentication in a wireless power transmission system. Disclosed in the present specification is an authentication method in a wireless power transmission system, comprising the steps of: receiving, from a target device, a first packet including indication information related to whether the target device supports an authentication function; transmitting an authentication request message to the target device if the target device supports the authentication function; receiving, from the target device, an authentication response message including a certificate for wireless charging in response to the authentication request message; and confirming the authentication of the target device on the basis of the authentication response message.Type: ApplicationFiled: May 2, 2018Publication date: December 30, 2021Applicant: LG ELECTRONICS INC.Inventors: Yongcheol PARK, Jaeyeol KIM, Joonho PARK, Jeongkyo SEO, Gyunghwan YOOK, Jaesung LEE
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Patent number: 11139702Abstract: The present invention relates to an apparatus and a method for performing power calibration in a wireless power transmission system. The present specification provides a wireless power transmission apparatus comprising: a power conversion unit configured to transmit, in a power transfer phase, wireless power generated on the basis of magnetic coupling to a wireless power receiving device; and a communication/control unit configured to perform an initial calibration for a power parameter prior to the power transfer phase, receive a first received power packet from the wireless power receiving device indicating the power received by the wireless power receiving device during the power transfer phase, and detect foreign matter by using the received power and a first power loss determined on the basis of the initial calibration.Type: GrantFiled: January 8, 2019Date of Patent: October 5, 2021Assignee: LG ELECTRONICS INC.Inventors: Yongcheol Park, Joonho Park, Gyunghwan Yook
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Publication number: 20210306036Abstract: An apparatus and a method for performing handover between heterogeneous communication methods. A wireless power transmission apparatus and reception apparatus can indicate whether to support out-band communication thereof on the basis of an out-band flag. The wireless power transmission apparatus can request the wireless power reception apparatus to start a handover by using a bit pattern requesting the handover. The handover procedure to out-band may be performed in a negotiation phase or may be performed in a separate handover phase. Information for establishing an out-band communication connection can be transmitted from the wireless power reception apparatus to the wireless power transmission apparatus through in-band communication. Also, even after the handover to the out-band is completed, it is possible to periodically or intermittently perform the in-band communication in a power transmission phase to detect a swap of the wireless power reception apparatus.Type: ApplicationFiled: June 14, 2021Publication date: September 30, 2021Inventors: Yongcheol PARK, Gyunghwan YOOK, Seonghun LEE
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Patent number: 11114898Abstract: The present invention relates to a device and method for supporting improved communication speed in a wireless power transmission system. The present specification provides a method comprising the steps of: generating wireless power at an operating frequency; configuring n, as the number of cycles per bit, which is used for transmitting one bit at the operating frequency; aligning each bit of the data with the n cycles; causing the operating frequency to transition between differential biphases according to the value of said each bit during the n cycles; and transmitting the wireless power to a wireless power receiving device on the basis of magnetic coupling at the transitioning operating frequency.Type: GrantFiled: March 7, 2019Date of Patent: September 7, 2021Assignee: LG Electronics Inc.Inventors: Yongcheol Park, Gyunghwan Yook
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Publication number: 20210265875Abstract: A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.Type: ApplicationFiled: May 6, 2021Publication date: August 26, 2021Inventors: Yongcheol PARK, Gyunghwan YOOK
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Publication number: 20210218287Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.Type: ApplicationFiled: March 30, 2021Publication date: July 15, 2021Applicant: LG ELECTRONICS INC.Inventors: Kyunghwan KIM, Yongcheol PARK, Jihyun LEE, Gyunghwan YOOK
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Patent number: 11063636Abstract: The present invention relates to a wireless power transmission system and, more particularly, to an apparatus and a method for performing handover between heterogeneous communication methods. A wireless power transmission apparatus and reception apparatus can indicate whether to support out-band communication thereof on the basis of an out-band flag. The wireless power transmission apparatus can request the wireless power reception apparatus to start a handover by using a bit pattern requesting the handover. The handover procedure to out-band may be performed in a negotiation phase or may be performed in a separate handover phase. Information for establishing an out-band communication connection can be transmitted from the wireless power reception apparatus to the wireless power transmission apparatus through in-band communication.Type: GrantFiled: August 7, 2020Date of Patent: July 13, 2021Assignee: LG Electronics Inc.Inventors: Yongcheol Park, Gyunghwan Yook, Seonghun Lee
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Publication number: 20210203193Abstract: Disclosed in the present specification is a wireless power reception device comprising: a power pickup unit for receiving wireless power from a wireless power transmission device by means of magnetic coupling with the wireless power transmission device and transforming, into a direct current signal, an alternating current signal generated by wireless power; a communication/control unit for receiving the direct current signal from the power pickup unit, transmitting, to the wireless power transmission device, a first power transmission suspension packet for temporarily suspending transmission of the wireless power in order to detect a foreign object, and performing a foreign object detection procedure within a predetermined time window when the transmission of the wireless power is temporarily suspended; and a load for receiving the direct current signal from the power pickup unit.Type: ApplicationFiled: August 6, 2019Publication date: July 1, 2021Applicant: LG ELECTRONICS INC.Inventors: Kyunghwan KIM, Gyunghwan YOOK, Yongcheol PARK, Jinmoo PARK
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Patent number: 11050300Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.Type: GrantFiled: April 4, 2019Date of Patent: June 29, 2021Assignee: LG ELECTRONICS INC.Inventors: Kyunghwan Kim, Yongcheol Park, Jihyun Lee, Gyunghwan Yook
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Publication number: 20210194295Abstract: The present specification discloses a method for receiving wireless power from a wireless power transmission device on the basis of foreign object detection, the method comprising the steps of: receiving a digital ping from the wireless power transmission device; transmitting identification and configuration packets to the wireless power transmission device; transmitting a foreign substance detection state packet indicating a reference Q factor value of a wireless power reception device to the wireless power transmission device; and receiving wireless power through magnetic coupling from the wireless power transmission device, on the basis of a result of foreign substance detection using the reference Q factor value by the wireless power transmission device.Type: ApplicationFiled: August 13, 2019Publication date: June 24, 2021Applicant: LG ELECTRONICS INC.Inventors: Kyunghwan KIM, Yongcheol PARK, Gyunghwan YOOK
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Patent number: 11031829Abstract: A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.Type: GrantFiled: July 24, 2020Date of Patent: June 8, 2021Assignee: LG Electronics Inc.Inventors: Yongcheol Park, Gyunghwan Yook
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Publication number: 20210143687Abstract: The present invention relates to an apparatus and a method for performing communication in a wireless power transmission system. The present specification discloses a wireless power transmission apparatus comprising: a communication/control unit configured to perform negotiation on a first available power index with a wireless power reception apparatus; and a power conversion unit configured to create magnetic coupling of a primary coil according to the first available power index, and transmit power wirelessly to the wireless power reception apparatus. The wireless power transmission apparatus can properly adjust an available power index in a dynamic manner at a time point desired by itself according to a surrounding environment/situation, and leadingly initiate communication and authentication.Type: ApplicationFiled: August 24, 2018Publication date: May 13, 2021Applicant: LG ELECTRONICS INC.Inventors: Yongcheol Park, Gyunghwan Yook
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Patent number: 10971955Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.Type: GrantFiled: June 29, 2020Date of Patent: April 6, 2021Assignee: LG ELECTRONICS INC.Inventors: Kyunghwan Kim, Yongcheol Park, Jihyun Lee, Gyunghwan Yook
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Publication number: 20210066973Abstract: The present invention relates to an apparatus and a method for performing power calibration in a wireless power transmission system. The present specification provides a wireless power transmission apparatus comprising: a power conversion unit configured to transmit, in a power transfer phase, wireless power generated on the basis of magnetic coupling to a wireless power receiving device; and a communication/control unit configured to perform an initial calibration for a power parameter prior to the power transfer phase, receive a first received power packet from the wireless power receiving device indicating the power received by the wireless power receiving device during the power transfer phase, and detect foreign matter by using the received power and a first power loss determined on the basis of the initial calibration.Type: ApplicationFiled: January 8, 2019Publication date: March 4, 2021Applicant: LG ELECTRONICS INC.Inventors: Yongcheol PARK, Joonho PARK, Gyunghwan YOOK
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Publication number: 20210044152Abstract: The present invention relates to a device and method for supporting improved communication speed in a wireless power transmission system. The present specification provides a method comprising the steps of: generating wireless power at an operating frequency; configuring n, as the number of cycles per bit, which is used for transmitting one bit at the operating frequency; aligning each bit of the data with the n cycles; causing the operating frequency to transition between differential biphases according to the value of said each bit during the n cycles; and transmitting the wireless power to a wireless power receiving device on the basis of magnetic coupling at the transitioning operating frequency.Type: ApplicationFiled: March 7, 2019Publication date: February 11, 2021Inventors: Yongcheol PARK, Gyunghwan YOOK
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Publication number: 20200382166Abstract: The present invention relates to a wireless power transmission system and, more particularly, to an apparatus and a method for performing handover between heterogeneous communication methods. A wireless power transmission apparatus and reception apparatus can indicate whether to support out-band communication thereof on the basis of an out-band flag. The wireless power transmission apparatus can request the wireless power reception apparatus to start a handover by using a bit pattern requesting the handover. The handover procedure to out-band may be performed in a negotiation phase or may be performed in a separate handover phase. Information for establishing an out-band communication connection can be transmitted from the wireless power reception apparatus to the wireless power transmission apparatus through in-band communication.Type: ApplicationFiled: August 7, 2020Publication date: December 3, 2020Inventors: Yongcheol PARK, Gyunghwan YOOK, Seonghun LEE
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Publication number: 20200366137Abstract: A wireless power transmitter including a power conversion unit configured to transmit wireless power generated based on magnetic coupling in a power transfer phase and a control unit configured to receive, from the wireless power receiver operating at a first operating point, a first received power packet of the first operating point and a second received power packet of the first operating point based on the first received power packet of the first operating point and the second received power packet of the first operating point and configured to receive a first received power packet of the second operating point and a second received power packet of the second operating point related to power calibration and construct a second power calibration curve based on the first received power packet of the second operating point and the second received power packet of the second operating point.Type: ApplicationFiled: July 24, 2020Publication date: November 19, 2020Inventors: Yongcheol PARK, Gyunghwan YOOK
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Publication number: 20200328629Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.Type: ApplicationFiled: June 29, 2020Publication date: October 15, 2020Applicant: LG ELECTRONICS INC.Inventors: Kyunghwan KIM, Yongcheol PARK, Jihyun LEE, Gyunghwan YOOK
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Patent number: 10805888Abstract: A method for performing authentication of a target device in a wireless power transmission system, includes receiving, from the target device, a first packet including indication information related to whether or not the target device supports an authentication function; in case the target device supports the authentication function, transmitting an authentication request message to the target device; and receiving, from the target device, an authentication response message including a certificate related to wireless charging as a response to the authentication request message, wherein a format of the certificate includes a certificate type that informs whether the certificate is one of a plurality of certificates including a root certificate, an intermediate certificate and a final certificate for a wireless power transmitter (PTX).Type: GrantFiled: April 24, 2020Date of Patent: October 13, 2020Assignee: LG ELECTRONICS INC.Inventors: Yongcheol Park, Jaeyeol Kim, Joonho Park, Jeongkyo Seo, Gyunghwan Yook, Jaesung Lee