Patents by Inventor Hyeong S. Hong

Hyeong S. Hong 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: 5546020
    Abstract: A data output buffer comprising a pull-up transistor having an N type-well, the pull-up transistor transferring a supply voltage from a supply voltage source to an output line in response to a logic state of data from an input line, a first PMOS transistor for switching the supply voltage from the supply voltage source to the N type-well of the pull-up transistor in response to a voltage on the output line, and a second PMOS transistor for feeding the voltage on the output line back to the N type-well of the pull-up transistor when the voltage on the output line is higher than the supply voltage from the supply voltage source. According to the present invention, the voltage on the output line can be prevented from being latched up to the supply voltage source when it is higher than the supply voltage from the supply voltage source. Therefore, the data output buffer has an enhanced operation speed and a minimized occupying area in a semiconductor integrated circuit device.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: August 13, 1996
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Dong M. Lee, Hyeong S. Hong