Patents by Inventor Hack Soo Kim

Hack Soo Kim 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).

  • Multi-driving apparatus by a multi-level detection and a method for controlling the same
    Patent number: 6400216
    Abstract: A multi-driving apparatus by a multi-level detection which pluralizes a voltage detection level in order to effectively operate voltage generators in the voltage generation circuit, minimizes a level fluctuation, reduces noise influenced on a total operation of the apparatus, increases a reliability of the apparatus, and reduces the power-consumption.
    Type: Grant
    Filed: November 24, 2000
    Date of Patent: June 4, 2002
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Hack Soo Kim, Saeng Hwan Kim
  • Delay circuit having a constant delay time
    Patent number: 6310503
    Abstract: The present invention discloses a delay circuit having a constant delay time. The delay circuit comprises an electric wire for transmitting a driving signal from a driver; a capacitor connected between said electric wire and ground, and for delaying transmission of said driving signal; and a current source connected to said electric wire and capacitor in parallel, and for keeping an amount of an electric current applied to said capacitor constant when a signal applied to said capacitor is varied.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: October 30, 2001
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Saeng Hwan Kim, Hyun Sung Hong, Hack Soo Kim
  • Multi-driving apparatus by a multi-level detection and a method for controlling the same
    Patent number: 6236261
    Abstract: A multi-driving apparatus by a multi-level detection which pluralizes a voltage detection level in order to effectively operate voltage generators in the voltage generation circuit, minimizes a level fluctuation, reduces noise influenced on a total operation of the apparatus, increases a reliability of the apparatus, and reduces the power-consumption.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: May 22, 2001
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Hack Soo Kim, Saeng Hwan Kim