Patents by Inventor Sun Keun YU

Sun Keun YU 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).

  • Auxiliary device for setting wavelength and method for setting optical wavelength of optical network unit
    Patent number: 10763959
    Abstract: A wavelength-setting auxiliary device according to an embodiment of the inventive concept includes an optical wavelength analyzer configured to transmit a test signal having a first wavelength to an optical line terminal, and to execute a central wavelength detection algorithm based on a result of detecting power of a return signal for the test signal to set optical wavelength information of a tunable optical module, and a connector connected to the tunable optical module for interfacing data transmitted between the optical wavelength analyzer and the tunable optical module.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: September 1, 2020
    Assignee: SOLiD, INC.
    Inventors: Tae Hyeong Kim, Won Song Chang, Sun Keun Yu
  • Digital data compression and decompression device
    Patent number: 10312935
    Abstract: There is provided a digital data compression device including a domain converter configured to perform frequency domain conversion on input digital I/Q data and output coefficient data corresponding to the digital I/Q data; a data converter configured to receive the coefficient data output from the domain converter and convert the input coefficient data of Cartesian coordinates into coefficient data of polar coordinates; and a quantizer configured to quantize the coefficient data of the polar coordinates output from the data converter.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: June 4, 2019
    Assignee: SOLiD, INC.
    Inventors: Hee Cheol Yun, Seung Rog Choi, Sun Keun Yu, Tae Hyeong Kim
  • AUXILIARY DEVICE FOR SETTING WAVELENGTH AND METHOD FOR SETTING OPTICAL WAVELENGTH OF OPTICAL NETWORK UNIT
    Publication number: 20180337728
    Abstract: A wavelength-setting auxiliary device according to an embodiment of the inventive concept includes an optical wavelength analyzer configured to transmit a test signal having a first wavelength to an optical line terminal, and to execute a central wavelength detection algorithm based on a result of detecting power of a return signal for the test signal to set optical wavelength information of a tunable optical module, and a connector connected to the tunable optical module for interfacing data transmitted between the optical wavelength analyzer and the tunable optical module.
    Type: Application
    Filed: November 18, 2016
    Publication date: November 22, 2018
    Applicant: SOLiD, INC.
    Inventors: Tae Hyeong KIM, Won Song CHANG, Sun Keun YU
  • DIGITAL DATA COMPRESSION AND DECOMPRESSION DEVICE
    Publication number: 20180262206
    Abstract: There is provided a digital data compression device including a domain converter configured to perform frequency domain conversion on input digital I/Q data and output coefficient data corresponding to the digital I/Q data; a data converter configured to receive the coefficient data output from the domain converter and convert the input coefficient data of Cartesian coordinates into coefficient data of polar coordinates; and a quantizer configured to quantize the coefficient data of the polar coordinates output from the data converter.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 13, 2018
    Applicant: SOLiD, INC.
    Inventors: Hee Cheol YUN, Seung Rog CHOI, Sun Keun YU, Tae Hyeong KIM