Patents by Inventor Wan Yoon Lee

Wan Yoon Lee 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).

  • Power line communication system using hybrid-fiber coaxial and communication device used in the system
    Patent number: 8131153
    Abstract: A communication equipment which is utilized in a power line communication (PLC) system utilizing a hybrid fiber coax (HFC) which includes a PLC optical network unit, a PLC trunk bridge amplifier, a PLC distribution amplifier, and a PLC coupling device. In this instance, the PLC optical network unit does not require a PLC protocol conversion of an Ethernet signal by a cable modem and a PLC modem in each subscriber location, and enables a PLC communication between the each subscriber location and a communication terminal utilizing a PLC Ethernet signal as is, by receiving an optical signal from an optical transmitter via an optical fiber, converting the optical signal into the PLC Ethernet signal corresponding to a predetermined PLC protocol, and transmitting the PLC Ethernet signal to at least one subscriber location via a coaxial cable.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: March 6, 2012
    Assignee: LS Cable Ltd.
    Inventors: Dong Young Park, Kwan Hee Han, Sung Wook Moon, Hyung Suk Choi, Wan Yoon Lee
  • Power Line Communication System Using Hybrid-Fiber Coaxial and Communication Device Used in the System
    Publication number: 20080317472
    Abstract: A communication equipment which is utilized in a power line communication (PLC) system utilizing a hybrid fiber coax (HFC) which includes a PLC optical network unit, a PLC trunk bridge amplifier, a PLC distribution amplifier, and a PLC coupling device. In this instance, the PLC optical network unit does not require a PLC protocol conversion of an Ethernet signal by a cable modem and a PLC modem in each subscriber location, and enables a PLC communication between the each subscriber location and a communication terminal utilizing a PLC Ethernet signal as is, by receiving an optical signal from an optical transmitter via an optical fiber, converting the optical signal into the PLC Ethernet signal corresponding to a predetermined PLC protocol, and transmitting the PLC Ethernet signal to at least one subscriber location via a coaxial cable.
    Type: Application
    Filed: November 29, 2006
    Publication date: December 25, 2008
    Inventors: Dong Young Park, Kwan Hee Han, Sung Wook Moon, Hyung Suk Choi, Wan Yoon Lee