Patents by Inventor Hyun Soo Sim

Hyun Soo Sim 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).

  • Flash memory device having a program path the same as a read pre-condition path
    Patent number: 5754472
    Abstract: The present invention relates to a flash memory cell device which can reduce the power consumption and improve the operation characteristic and reliability of the cell, by completing the program against the fully programmed memory cell string because the program is verified upon a word line-wide program into a NAND type flash memory cell string.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: May 19, 1998
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Hyun Soo Sim
  • Flash memory device
    Patent number: 5675536
    Abstract: The present invention discloses a flash memory cell which can prevent an over programming in a way that uses a cross coupled latch circuit and peripheral circuits upon a byte programming into a flash memory cell programmed by hot electron injection.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: October 7, 1997
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Hyun Soo Sim
  • Method of erasing a flash memory device
    Patent number: 5663909
    Abstract: A method of erasing a flash memory device which can reduce the erasure time by performing an erasure and an erasure verification on a plane by plane basis, when performing a chip erase having a plurality of planes is disclosed.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: September 2, 1997
    Assignee: Hyundai Electronic Industries Co., Ltc.
    Inventor: Hyun Soo Sim