Patents by Inventor Choul Seung HYUN

Choul Seung HYUN 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).

  • Data scrambling method that controls code density
    Patent number: 11923000
    Abstract: A data scrambling method for controlling a code density according to an exemplary embodiment of the present disclosure includes receiving a plain code which is a code to be stored in the non-volatile memory device and a storage address at which the plain code is recorded; determining a rank corresponding to the plain code, using an ET table including appearance frequency rank information corresponding to individual plain code; calculating an adjustment rank corresponding to the plain code, using the rank and a random number that is generated based on the address of storage address; determining a cipher code corresponding to the appearance frequency rank of the plain code, using the adjustment rank and an ECC table including rank information determined by an objective function for individual cipher code; and storing the cipher code in the storage address.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: March 5, 2024
    Assignee: UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION
    Inventors: Dong Hee Lee, Choul Seung Hyun, Gwan Il Jeong, Soo Won You
  • DATA SCRAMBLING METHOD THAT CONTROLS CODE DENSITY
    Publication number: 20220215874
    Abstract: A data scrambling method for controlling a code density according to an exemplary embodiment of the present disclosure includes receiving a plain code which is a code to be stored in the non-volatile memory device and a storage address at which the plain code is recorded; determining a rank corresponding to the plain code, using an ET table including appearance frequency rank information corresponding to individual plain code; calculating an adjustment rank corresponding to the plain code, using the rank and a random number that is generated based on the address of storage address; determining a cipher code corresponding to the appearance frequency rank of the plain code, using the adjustment rank and an ECC table including rank information determined by an objective function for individual cipher code; and storing the cipher code in the storage address.
    Type: Application
    Filed: November 24, 2021
    Publication date: July 7, 2022
    Inventors: Dong Hee LEE, Choul Seung HYUN, Gwan Il JEONG, Soo Won YOU