Patents by Inventor Jong Seob Baek

Jong Seob Baek 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).

  • Publication number: 20190259913
    Abstract: Disclosed herein is a semiconductor device. The semiconductor device includes a substrate, a first conductive type semiconductor layer disposed over the substrate, an active layer disposed over the first conductive type semiconductor layer, and a second conductive type semiconductor layer disposed over the active layer. The first conductive type semiconductor layer includes a first layer, a second layer and a third layer having different composition ratios of indium (In). The first semiconductor layer is disposed close to the active layer. The second semiconductor layer is disposed under the first semiconductor layer. The third semiconductor layer is disposed under the second semiconductor layer. In content is reduced from the active layer to the third semiconductor layer, and In content of the third semiconductor layer may be 5% or more to 10% or less of that of the active layer.
    Type: Application
    Filed: November 2, 2017
    Publication date: August 22, 2019
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Kwang Sun BAEK, Jong Ho NA, Dae Seob HAN, Jung Hyun HWANG
  • Patent number: 8923458
    Abstract: A method and device for decoding in a differential orthogonal space-time block coded system are disclosed. The disclosed method includes: (a) receiving signals from a transmitter during a particular time slot segment, where the signals are encoded by differential orthogonal space-time block coding; (b) transforming to reception signals for two sub-systems by using a sum operation and a difference operation of the signals received in step (a), where the transformed reception signals for the two sub-systems maintain an orthogonality of an orthogonal space-time block coded system; and (c) performing decoding using the reception signals for the two sub-systems transformed in step (b). The method provides the advantage of lowering the level of operational complexity for decoding in a communication system that employs differential orthogonal space-time block coding.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: December 30, 2014
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jong-Soo Seo, Jae Shin Han, Jong Seob Baek
  • Publication number: 20060200511
    Abstract: A channel equalizer and a method of equalizing a channel.
    Type: Application
    Filed: February 28, 2006
    Publication date: September 7, 2006
    Inventors: Sung-woo Park, Jong-soo Seo, Hae-joo Jeong, Jong-seob Baek
  • Patent number: 6138262
    Abstract: A memory address generator in a convolutional interleaver/deinterleaver for correcting errors occurred in a data transmission of communication systems.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: October 24, 2000
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Jong Seob Baek
  • Patent number: 6134288
    Abstract: Disclosed is an apparatus and a method for generating decoding clock signals in response to a period of write and read clock signals for decoding transmission data, which is suppressed in a form of punctured code at a code rate. The apparatus according to the present invention comprises a) a clock generator receiving a control signal and a code rate from a transmission part, for rearranging a suppressed data; b) a controller receiving a write clock signal from an external circuit and a read clock signal from the clock generator, for controlling a period of a read clock signal wherein the period of the read clock signal is correspondent to the number of data stored in the memory; c) a decoding clock generator receiving a system clock signal from an external circuit and the control clock signal from the controller, for outputting a decoding clock signal.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: October 17, 2000
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Jong Seob Baek
  • Patent number: 6084925
    Abstract: A method and apparatus for discriminating synchronous or asynchronous states of Viterbi decode data, by performing independent trace-back of the survival path of the received Viterbi decode data, including the steps of: tracing back independently reception data at respective initial states on the basis of trellis metrics from a different initial state value; and comparing a state value with other state values at every cycle, and determining that the data is in a synchronous state, if the state value is identical to the other state values at a cycle, or determining that the data is in an asynchronous state, if not.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: July 4, 2000
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Jong Seob Baek