Patents by Inventor Bong Seok Han

Bong Seok Han 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).

  • Patent number: 8463572
    Abstract: A semiconductor device comprises a burn-in test circuit configured to receive a flag signal for a burn-in test, generate a toggled output enable signal, and drive a first input/output line to toggle a signal on the first input/output line, and a switching device connected between a bit line and a second input/output line for transferring a signal on the bit line to the second input/output line in response to the output enable signal.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: June 11, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Sang Kwon Lee, Bong Seok Han
  • Publication number: 20120013357
    Abstract: A semiconductor device comprises a burn-in test circuit configured to receive a flag signal for a burn-in test, generate a toggled output enable signal, and drive a first input/output line to toggle a signal on the first input/output line, and a switching device connected between a bit line and a second input/output line for transferring a signal on the bit line to the second input/output line in response to the output enable signal.
    Type: Application
    Filed: September 15, 2011
    Publication date: January 19, 2012
    Inventors: Sang Kwon LEE, Bong Seok Han
  • Patent number: 8041531
    Abstract: A burn-in test apparatus and a semiconductor device using the same are disclosed. The burn-in test apparatus includes a flag signal generating unit configured to receive an external input signal and an external address externally inputted for a burn-in test and generate a flag signal, and a burn-in test unit configured to receive the flag signal, generate a toggled output enable signal, and drive an input/output line to toggle a signal on the input/output line.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 18, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Sang Kwon Lee, Bong Seok Han
  • Publication number: 20080291761
    Abstract: A burn-in test apparatus and a semiconductor device using the same are disclosed. The burn-in test apparatus includes a flag signal generating unit configured to receive an external input signal and an external address externally inputted for a burn-in test and generate a flag signal, and a burn-in test unit configured to receive the flag signal, generate a toggled output enable signal, and drive an input/output line to toggle a signal on the input/output line.
    Type: Application
    Filed: December 20, 2007
    Publication date: November 27, 2008
    Inventors: Sang Kwon Lee, Bong Seok Han
  • Patent number: 7145826
    Abstract: A device for controlling a temperature compensated self-refresh period clamps a self-refresh signal at high temperature over a specific temperature to maintain the self-refresh period, thereby removing dependency on temperature. In the device, an oscillating signal having a period varied depending on temperature change is generated below a specific temperature, and a period of a first period signal is compared with that of the oscillating signal applied from a temperature compensated self-refresh circuit unit over the specific temperature. When the period of the oscillating signal is shorter than that of the first signal, a pulse width of an oscillating strobe signal generated in response to a plurality of division signals each obtained by dividing the period of the oscillating signal at a predetermined ratio is controlled, so that an oscillating period of the temperature compensated self-refresh circuit unit is kept at a fixed state.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: December 5, 2006
    Assignee: Hynix Semiconductor Inc.
    Inventors: Yun Seok Hong, Bong Seok Han