Patents by Inventor Il-Han Kim

Il-Han 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).

  • Patent number: 11431381
    Abstract: A method of operating a communication system is disclosed. The method includes forming a data frame having plural orthogonal frequency division multiplex (OFDM) symbols. A first set of preamble subcarriers is allocated to at least one of the OFDM symbols. A second set of data subcarriers is allocated to said at least one of the OFDM symbols.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: August 30, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Mehul Soman, Il Han Kim
  • Patent number: 11350311
    Abstract: A utilization factor controller is to estimate power consumption values corresponding to a plurality of first utilization factor and second utilization factor pairs, the first utilization factor corresponding to utilization of the first transceiver that is to communicate using a first protocol, the second utilization factor corresponding to utilization of the second transceiver that is to communicate using a second protocol different form the first protocol, the utilization factor controller to select a first utilization factor and second utilization factor pair based on the estimated power consumption value. A transmission time controller is to calculate first and second transmission times to be used by the first and second transceiver based on the selected first utilization factor and second utilization factor pair. A data allocator is to allocate data for transmission by the first transceiver and the second transceiver according to the first and second transmission times.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: May 31, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Wonsoo Kim, Il Han Kim
  • Publication number: 20220158689
    Abstract: In a powerline communications (PLC) network having a first node and at least a second node on a PLC channel utilizing a band including a plurality of tones, based on at least one channel quality indicator (CQI), the first node allocates for a tone map response payload only a single (1) power control bit for each of a plurality of subbands having two or more tones. The power control bit indicates a first power state or a second power state. The first node transmits a frame including the tone map response payload to the second node. The second node transmits a frame having boosted signal power for the tones in the subbands which have the first power state compared to a lower signal power for the tones in the subbands which have the second power state.
    Type: Application
    Filed: February 6, 2022
    Publication date: May 19, 2022
    Inventors: Il Han Kim, ANAND G. Dabak, Tarkesh Pande
  • Patent number: 11277170
    Abstract: In a powerline communications (PLC) network having a first node and at least a second node on a PLC channel utilizing a band including a plurality of tones, based on at least one channel quality indicator (CQI), the first node allocates for a tone map response payload only a single (1) power control bit for each of a plurality of subbands having two or more tones. The power control bit indicates a first power state or a second power state. The first node transmits a frame including the tone map response payload to the second node. The second node transmits a frame having boosted signal power for the tones in the subbands which have the first power state compared to a lower signal power for the tones in the subbands which have the second power state.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: March 15, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Il Han Kim, Anand G. Dabak, Tarkesh Pande
  • Publication number: 20220060962
    Abstract: A network includes a mobile network node (MNN) that includes a mobile node communications manager (MNCM) to facilitate wireless communications to a plurality of stationary network nodes (SNNs) in a wireless network via a wireless network protocol. The MNCM utilizes a multicast address received over the wireless network. The multicast address is assigned to a predetermined network time slot to communicate uplink data from the MNN to the SNNs. The MNN receives downlink data via a separate predetermined network address and time slot assigned to a given SNN.
    Type: Application
    Filed: November 3, 2021
    Publication date: February 24, 2022
    Inventors: ARITON XHAFA, JIANWEI ZHOU, XIAOLIN LU, IL HAN KIM, KAICHIEN TSAI
  • Patent number: 11240216
    Abstract: A network system comprising a first network element and a second network element. The first network element is programmed to provide the step of first, communicating to the second network element a plurality of configuration parameter sets. Each configuration parameter set corresponds to a respective frame fragment and comprises a parameter value that differs in value from the parameter value in another configuration parameter set in the plurality of configuration parameter sets. The first network element also is programmed to provide the step of second, communicating a frame, to the second network element, in a plurality of frame fragments, wherein each frame fragment in the plurality of frame fragments is communicated according to a respective parameter value in the plurality of configuration parameter sets.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: February 1, 2022
    Assignee: Texas Instmments Incorporated
    Inventors: Kumaran Vijayasankar, Mehul Soman, Arvind Kandhalu Raghu, Il Han Kim
  • Publication number: 20210391725
    Abstract: A photovoltaic system with an inverter, at least one solar panel for providing electrical power, and electrical wiring for coupling electrical power from the at least one solar panel to the inverter. Also included is a transmitter for transmitting a messaging protocol along the electrical wiring, where the protocol includes a multibit wireline signal. Also included is circuitry for selectively connecting the electrical power from the at least one solar panel along the electrical wiring to the inverter in response to the messaging protocol.
    Type: Application
    Filed: August 24, 2021
    Publication date: December 16, 2021
    Inventors: Il Han Kim, Xiaolin Lu
  • Patent number: 11197222
    Abstract: A network includes a mobile network node (MNN) that includes a mobile node communications manager (MNCM) to facilitate wireless communications to a plurality of stationary network nodes (SNNs) in a wireless network via a wireless network protocol. The MNCM utilizes a multicast address received over the wireless network. The multicast address is assigned to a predetermined network time slot to communicate uplink data from the MNN to the SNNs. The MNN receives downlink data via a separate predetermined network address and time slot assigned to a given SNN.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: December 7, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton Xhafa, Jianwei Zhou, Xiaolin Lu, Il Han Kim, Kaichien Tsai
  • Publication number: 20210320991
    Abstract: Methods for building, transmitting, and receiving frame structures in power line communications (PLC) are described. Various techniques described herein provide a preamble design using one or more symbols. One or more preamble symbols may be interspersed within a header portion of a PLC frame to facilitate estimation of a frame boundary and/or sampling frequency offset, for example, in the presence of impulsive noise.
    Type: Application
    Filed: June 23, 2021
    Publication date: October 14, 2021
    Inventors: Anand G. Dabak, Badri N. Varadarajan, Il Han Kim, Tarkesh Pande
  • Patent number: 11101662
    Abstract: A photovoltaic system with an inverter, at least one solar panel for providing electrical power, and electrical wiring for coupling electrical power from the at least one solar panel to the inverter. Also included is a transmitter for transmitting a messaging protocol along the electrical wiring, where the protocol includes a multibit wireline signal. Also included is circuitry for selectively connecting the electrical power from the at least one solar panel along the electrical wiring to the inverter in response to the messaging protocol.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: August 24, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Il Han Kim, Xiaolin Lu
  • Patent number: 11082541
    Abstract: Methods for building, transmitting, and receiving frame structures in power line communications (PLC) are described. Various techniques described herein provide a preamble design using one or more symbols. One or more preamble symbols may be interspersed within a header portion of a PLC frame to facilitate estimation of a frame boundary and/or sampling frequency offset, for example, in the presence of impulsive noise.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: August 3, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anand G. Dabak, Badri N Varadarajan, Il Han Kim, Tarkesh Pande
  • Publication number: 20210204114
    Abstract: A multi-hop mesh network includes a root network device and a first network device. The first network device is configured to establish a first direct wireless connection with the root network device and negotiate a first shared secret key with the root network device. The multi-hop network further includes a second network device configured to establish a second direct wireless connection with the first network device and negotiate a second shared secret key with the first network device.
    Type: Application
    Filed: December 30, 2019
    Publication date: July 1, 2021
    Inventors: Feng L. MO, Jianwei ZHOU, Xiaolin LU, Il Han KIM, Kaichien TSAI
  • Patent number: 11025301
    Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: June 1, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Il Han Kim, Tarkesh Pande, Anuj Batra
  • Publication number: 20210160119
    Abstract: A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A PLC device may include a delayed correlation detector and a cross-correlation detector operating in concert to facilitate preamble detection in one implementation.
    Type: Application
    Filed: January 6, 2021
    Publication date: May 27, 2021
    Inventors: Mostafa Sayed Ibrahim, Il Han Kim, Tarkesh Pande, Anuj Batra
  • Patent number: 11005530
    Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: May 11, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Badri N Varadarajan, Anand Dabak, Il Han Kim
  • Patent number: 11002739
    Abstract: The present invention relates to an antibody specifically binding to thioredoxin-1 and a use thereof, and more particularly, to an antibody specifically binding to thioredoxin-1 or an antigen-binding fragment thereof, a nucleic acid molecule(s) encoding a heavy chain and/or a light chain of the antibody or antigen-binding fragment thereof, a recombinant vector including the nucleic acid molecule, host cells, a method of preparing the antibody or antigen-binding fragment thereof, a breast cancer diagnostic kit, and a method of providing information necessary for breast cancer diagnosis.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 11, 2021
    Assignee: E&S HEALTHCARE CO., LTD.
    Inventors: Kyong Hoon Suh, Eun Hye Kang, Il Han Kim, Jong Hwan Jung, Ki Se Lee, Mi Kyung Kim
  • Publication number: 20210111756
    Abstract: A method of operating a communication system is disclosed. The method includes forming a data frame having plural orthogonal frequency division multiplex (OFDM) symbols. A first set of preamble subcarriers is allocated to at least one of the OFDM symbols. A second set of data subcarriers is allocated to said at least one of the OFDM symbols.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Mehul SOMAN, Il Han KIM
  • Patent number: 10965339
    Abstract: A method of generating a channel hopping sequence for a link in a wireless sensor network includes receiving performance quality data for respective frequency channels of frequency channels in the link in a monitoring system, determining a channel quality indicator (CQI) by the monitoring system for each frequency channel based on the respective performance quality data, and determining a repetition factor by the monitoring system for each frequency channel based on the respective CQI. A repetition factor for a frequency channel indicates a number of times the frequency channel is repeated in the channel hopping sequence.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: March 30, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jyotirmoy Banik, Il Han Kim, Jianwei Zhou, Xiaolin Lu
  • Publication number: 20210076258
    Abstract: A utilization factor controller is to estimate power consumption values corresponding to a plurality of first utilization factor and second utilization factor pairs, the first utilization factor corresponding to utilization of the first transceiver that is to communicate using a first protocol, the second utilization factor corresponding to utilization of the second transceiver that is to communicate using a second protocol different form the first protocol, the utilization factor controller to select a first utilization factor and second utilization factor pair based on the estimated power consumption value. A transmission time controller is to calculate first and second transmission times to be used by the first and second transceiver based on the selected first utilization factor and second utilization factor pair. A data allocator is to allocate data for transmission by the first transceiver and the second transceiver according to the first and second transmission times.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 11, 2021
    Inventors: Wonsoo Kim, Il Han Kim
  • Patent number: 10917279
    Abstract: A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A PLC device may include a delayed correlation detector and a cross-correlation detector operating in concert to facilitate preamble detection in one implementation.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: February 9, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Mostafa Sayed Ibrahim, Il Han Kim, Tarkesh Pande, Anuj Batra