Patents by Inventor Joo-Yul Park

Joo-Yul Park 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 of setting number of iteration counts of iterative decoding, and apparatus and methods of iterative decoding
    Patent number: 9178533
    Abstract: A method of setting a number of iteration counts of iterative decoding, and an apparatus and method of iterative decoding. The iterative decoder including a signal-to-noise ratio (SNR) estimation unit that estimates an SNR of a received signal, an iterative decoding count setting unit that sets a minimum number of iteration counts for the received signal based on the estimated SNR, and a decoding unit that iteratively decodes the received signal using tentative decoding and error check, and selectively performs the error check based on the minimum number of iteration counts.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: November 3, 2015
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Joo-Yul Park, Ki-Seok Chung
  • High-vacuum die-casting method
    Patent number: 8826965
    Abstract: A high-vacuum die-casting method includes an injecting step of moving a plunger in a sleeve so that a molten metal fed to the sleeve is pushed by the plunger to be injected into a cavity formed by a fixed mold and a movable mold, a cavity vacuumizing step of vacuum absorbing a gas in the cavity to discharge the vacuum-absorbed gas to the outside through a first path, and a sealed space vacuumizing step of vacuum absorbing a gas in a sealed space in which an eject plate and one ends of eject pins are arranged to discharge the vacuum-absorbed gas to the outside through a second path while the injecting step is performed. The sealed space vacuumizing step is started prior to the cavity vacuumizing step.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: September 9, 2014
    Assignee: Dongnam Precision Co., Ltd.
    Inventors: Yong Hyun Kim, Deak Soo Kim, Joo Yul Park
  • METHOD OF SETTING NUMBER OF ITERATION COUNTS OF ITERATIVE DECODING, AND APPARATUS AND METHODS OF ITERATIVE DECODING
    Publication number: 20140250349
    Abstract: A method of setting a number of iteration counts of iterative decoding, and an apparatus and method of iterative decoding. The iterative decoder including a signal-to-noise ratio (SNR) estimation unit that estimates an SNR of a received signal, an iterative decoding count setting unit that sets a minimum number of iteration counts for the received signal based on the estimated SNR, and a decoding unit that iteratively decodes the received signal using tentative decoding and error check, and selectively performs the error check based on the minimum number of iteration counts.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 4, 2014
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Joo-Yul PARK, Ki-Seok CHUNG
  • Method of setting number of iteration counts of iterative decoding, and apparatus and method of iterative decoding
    Patent number: 8719672
    Abstract: A method of setting a number of iteration counts of iterative decoding, and an apparatus and method of iterative decoding. The iterative decoder including a signal-to-noise ratio (SNR) estimation unit that estimates an SNR of a received signal, an iterative decoding count setting unit that sets a minimum number of iteration counts for the received signal based on the estimated SNR, and a decoding unit that iteratively decodes the received signal using tentative decoding and error check, and selectively performs the error check based on the minimum number of iteration counts.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: May 6, 2014
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventors: Joo-Yul Park, Ki-Seok Chung
  • HIGH-VACUUM DIE-CASTING METHOD
    Publication number: 20130255901
    Abstract: A high-vacuum die-casting method includes an injecting step of moving a plunger in a sleeve so that a molten metal fed to the sleeve is pushed by the plunger to be injected into a cavity formed by a fixed mold and a movable mold, a cavity vacuumizing step of vacuum absorbing a gas in the cavity to discharge the vacuum-absorbed gas to the outside through a first path, and a sealed space vacuumizing step of vacuum absorbing a gas in a sealed space in which an eject plate and one ends of eject pins are arranged to discharge the vacuum-absorbed gas to the outside through a second path while the injecting step is performed. The sealed space vacuumizing step is started prior to the cavity vacuumizing step.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 3, 2013
    Applicant: DONGNAM PRECISION CO., LTD.
    Inventors: Yong Hyun Kim, Deak Soo Soo Kim, Joo Yul Park
  • METHOD OF SETTING NUMBER OF ITERATION COUNTS OF ITERATIVE DECODING, AND APPARATUS AND METHOD OF ITERATIVE DECODING
    Publication number: 20120131415
    Abstract: A method of setting a number of iteration counts of iterative decoding, and an apparatus and method of iterative decoding. The iterative decoder including a signal-to-noise ratio (SNR) estimation unit that estimates an SNR of a received signal, an iterative decoding count setting unit that sets a minimum number of iteration counts for the received signal based on the estimated SNR, and a decoding unit that iteratively decodes the received signal using tentative decoding and error check, and selectively performs the error check based on the minimum number of iteration counts.
    Type: Application
    Filed: October 12, 2009
    Publication date: May 24, 2012
    Applicant: Industry-University Cooperation Foundation Hanyang Univeristy
    Inventors: Joo-Yul Park, Ki-Seok Chung