Patents by Inventor Sang-Yun Hwang

Sang-Yun Hwang 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).

  • METHOD AND APPARATUS FOR SIGNAL DETECTION IN RADIO FREQUENCY IDENTIFICATION SYSTEM
    Publication number: 20080150700
    Abstract: Disclosed is an apparatus and method for signal detection according to frequency bands used in an RFID system. The apparatus includes a low-noise amplifier for low-noise amplifying a received signal, a receiver unit for detecting a CW signal and a tag signal, a transmitter unit for frequency up-converting and outputting an input signal, a PLL for generating a frequency signal according to a transmission signal band or a reception signal band, a receiver unit switch for connecting the receiver unit with the low-noise amplifier or a directional coupler, an antennas switch for connecting the antenna with the directional coupler or low-noise amplifier, and a controller unit for controlling a frequency of the frequency signal generated by the PLL, turning off transmission power in a case of an LBT scheme, controlling the receiver unit switch and the antenna switch, and determining if a corresponding channel is an idle channel.
    Type: Application
    Filed: November 28, 2007
    Publication date: June 26, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-Rim Lee, Sang-Yun Hwang, Chul-Jin Kim, June-Hyeok Im, Hyun-Kuk Choi, Chul-Hyun Park
  • Apparatus and method for code tracking loop in a CDMA system
    Publication number: 20070206665
    Abstract: A code tracking loop apparatus and method for improving a reception capability of a rake receiver in a CDMA system.
    Type: Application
    Filed: February 1, 2007
    Publication date: September 6, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Sang-Yun Hwang