Patents by Inventor Yi-Chen Lai

Yi-Chen Lai 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: 11967272
    Abstract: A sweep voltage generator and a display panel are provided. The sweep voltage generator includes an output node, a current generating block and a voltage regulating block. The output node is used to provide a sweep signal. The current generating block is coupled to the output node, includes a detection path for detecting an output load variation on the output node, and adjusts the sweep signal provided by the output node based on the output load variation. The voltage regulating block is coupled to the output node for regulating a voltage of the output node.
    Type: Grant
    Filed: December 9, 2022
    Date of Patent: April 23, 2024
    Assignees: AUO Corporation, National Cheng-Kung University
    Inventors: Chih-Lung Lin, Yi-Chen Huang, Chih-I Liu, Po-Cheng Lai, Ming-Yang Deng, Chia-En Wu, Ming-Hung Chuang, Chia-Tien Peng
  • Patent number: 11808834
    Abstract: A phased-array Doppler radar includes a two-way splitter, a transmit antenna, a receive antenna array, an ILO, a demodulation unit and a digital signal processing unit. A reference signal is split by the two-way splitter to the transmit antenna for transmission to targets and the ILO for injection locking. Signals reflected by the targets are received by the receive antenna array as received signals. An injection-locked signal generated by the ILO and the received signals received by the receive antenna array are delivered to the demodulation unit. The received signals are demodulated into baseband I/Q signals by the demodulation unit that uses the injection-locked signal as a local oscillator signal. The baseband I/Q signals are processed by the digital signal processing unit to obtain a digital beamforming pattern.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: November 7, 2023
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Tzyy-Sheng Horng, Chao-Kai Wen, Yi-Chen Lai, Yu-Chi Huang, Jui-Yen Lin, De-Ming Chian
  • Patent number: 11642033
    Abstract: A vital-sign radar sensor uses wireless internet signals to detect vital signs. It includes a first and second demodulation unit to demodulate an incident and reflected wireless internet signal with an injection-locked oscillator into a first and second demodulated signal, respectively. The combined use of the first and second demodulated signals can eliminate the influence of communication modulation on the extraction process of a Doppler shift due to vital signs. Moreover, the vital-sign radar sensor is a receive-only device so that it won't cause interference to ambient wireless communication networks.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: May 9, 2023
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Tzyy-Sheng Horng, Yi-Chen Lai, Jui-Yen Lin
  • Publication number: 20220192512
    Abstract: A vital-sign radar sensor uses wireless internet signals to detect vital signs. It includes a first and second demodulation unit to demodulate an incident and reflected wireless internet signal with an injection-locked oscillator into a first and second demodulated signal, respectively. The combined use of the first and second demodulated signals can eliminate the influence of communication modulation on the extraction process of a Doppler shift due to vital signs. Moreover, the vital-sign radar sensor is a receive-only device so that it won't cause interference to ambient wireless communication networks.
    Type: Application
    Filed: January 29, 2021
    Publication date: June 23, 2022
    Inventors: Tzyy-Sheng Horng, Yi-Chen Lai, Jui-Yen Lin
  • Publication number: 20210356577
    Abstract: A phased-array Doppler radar includes a two-way splitter, a transmit antenna, a receive antenna array, an ILO, a demodulation unit and a digital signal processing unit. A reference signal is split by the two-way splitter to the transmit antenna for transmission to targets and the ILO for injection locking. Signals reflected by the targets are received by the receive antenna array as received signals. An injection-locked signal generated by the ILO and the received signals received by the receive antenna array are delivered to the demodulation unit. The received signals are demodulated into baseband I/Q signals by the demodulation unit that uses the injection-locked signal as a local oscillator signal. The baseband I/Q signals are processed by the digital signal processing unit to obtain a digital beamforming pattern.
    Type: Application
    Filed: November 23, 2020
    Publication date: November 18, 2021
    Inventors: Tzyy-Sheng Horng, Chao-Kai Wen, Yi-Chen Lai, Yu-Chi Huang, Jui-Yen Lin, De-Ming Chian
  • Patent number: 10408752
    Abstract: A plasmonic sensor includes at least a substrate and a thin film metallic glass formed on the substrate. The dielectric constant (?r) of the thin film metallic glass is negative. Since the thin film metallic glass with negative ?r is used in the plasmonic sensor, the material cost can be significantly reduced, the mechanical property can be improved, and the optoelectronic property can be increased. Since the thin film metallic glass is a kind of supercooled alloy with amorphous structure, it can be applied for imprinting deformation and amorphous without grain boundary scattering.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: September 10, 2019
    Assignee: National Taiwan University
    Inventors: Cheng Wang, Li-Wei Nien, Chun-Hway Hsueh, Hsin-Chia Ho, Yi-Chen Lai
  • Publication number: 20180106721
    Abstract: A plasmonic sensor includes at least a substrate and a thin film metallic glass formed on the substrate. The dielectric constant (?r) of the thin film metallic glass is negative. Since the thin film metallic glass with negative ?r is used in the plasmonic sensor, the material cost can be significantly reduced, the mechanical property can be improved, and the optoelectronic property can be increased. Since the thin film metallic glass is a kind of supercooled alloy with amorphous structure, it can be applied for imprinting deformation and amorphous without grain boundary scattering.
    Type: Application
    Filed: September 27, 2017
    Publication date: April 19, 2018
    Applicant: National Taiwan University
    Inventors: Cheng Wang, Li-Wei Nien, Chun-Hway Hsueh, Hsin-Chia Ho, Yi-Chen Lai