Patents by Inventor Jae Ik Doh

Jae Ik Doh 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).

  • High voltage generation circuit for semiconductor memory device
    Patent number: 5754418
    Abstract: A high voltage generation circuit for a semiconductor memory device comprising a high voltage detector for detecting a high voltage, a ring oscillator for generating a pulse signal in response to an output signal from the high voltage detector when a power-up signal is made active, a high voltage pump circuit for performing a charge pumping operation to generate the high voltage and transfer the generated high voltage to a high voltage output terminal, and a pump controller for controlling the charge pumping operation of the high voltage pump circuit in response to the pulse signal from the ring oscillator.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: May 19, 1998
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Jin Ho Park, Jae Ik Doh, Dong Sik Jeong