Patents by Inventor Sam Won

Sam Won 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).

  • Page buffer circuit with reduced size and methods for reading and programming data with the same
    Publication number: 20070019468
    Abstract: A page buffer circuit with reduced size and methods for reading and programming data is provided. In the reading operation, the page buffer circuit reads out a data bit by alternatively using a higher bit register or a lower bit register regardless of whether the data bit read from the multi-level cell is a higher bit or a lower bit, thereby reducing the circuit area and improves the performance of operation.
    Type: Application
    Filed: December 14, 2005
    Publication date: January 25, 2007
    Applicant: Hynix Semiconductor Inc.
    Inventors: Jin Seong, Sam Won
  • PAGE BUFFER CIRCUIT WITH REDUCED SIZE, AND FLASH MEMORY DEVICE HAVING PAGE BUFFER AND PROGRAM OPERATION METHOD THEREOF
    Publication number: 20070002623
    Abstract: The present invention relates to a page buffer circuit with a reduced size, and a flash memory device having the page buffer circuit and program operation method thereof. According to the present invention, a page buffer circuit can perform a program operation of a Multi-Level Cell (MLC) using a data verify circuit even without a data compare circuit. Accordingly, an occupation area can be reduced and the size of a flash memory device can also be reduced.
    Type: Application
    Filed: November 30, 2005
    Publication date: January 4, 2007
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Sam Won, Jin Seong
  • Method of controlling copy-back operation of flash memory device including multi-level cells
    Publication number: 20060279989
    Abstract: A method of controlling a copy-back operation of a flash memory device including multi-level cells. In the method, the copy-back operation can be executed even without an additional storage space. Accordingly, a program time can be shortened and operational performance of a flash memory device can be improved.
    Type: Application
    Filed: May 3, 2006
    Publication date: December 14, 2006
    Inventors: Jin Seong, Sam Won
  • Oscillator of semiconductor device
    Publication number: 20060097813
    Abstract: An oscillator of a semiconductor memory device, wherein a reference voltage that flexibly shifts according to the shift in a power supply voltage is generated, and a reference clock is generated using the reference voltage. It is thus possible to generate the reference clock having a constant cycle regardless of the shift in the power supply voltage which can keep constant the duration period of internal control signals of devices, such as a timer and a pump circuit, which are synchronized to the reference clock.
    Type: Application
    Filed: May 10, 2005
    Publication date: May 11, 2006
    Inventor: Sam Won