Patents by Inventor Da AHN

Da AHN 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).

  • Clock switch device and system-on-chip having the same
    Patent number: 10298214
    Abstract: A clock switch device includes a control circuit and a tri-state buffer. The control circuit deactivates an output enable signal when a frequency of a clock signal varies and activates the output enable signal when the frequency of the clock signal is maintained without change. The tri-state buffer maintains an output electrode at a high impedance state when the output enable signal is deactivated and buffers the clock signal and outputs the buffered clock signal through the output electrode as an output clock signal when the output enable signal is activated.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: May 21, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hye-Won Shim, Dong-Uk Park, Phil-Jae Jeon, Sang-Woo Pae, Da Ahn
  • CLOCK SWITCH DEVICE AND SYSTEM-ON-CHIP HAVING THE SAME
    Publication number: 20180091122
    Abstract: A clock switch device includes a control circuit and a tri-state buffer. The control circuit deactivates an output enable signal when a frequency of a clock signal varies and activates the output enable signal when the frequency of the clock signal is maintained without change. The tri-state buffer maintains an output electrode at a high impedance state when the output enable signal is deactivated and buffers the clock signal and outputs the buffered clock signal through the output electrode as an output clock signal when the output enable signal is activated.
    Type: Application
    Filed: May 2, 2017
    Publication date: March 29, 2018
    Inventors: Hye-Won SHIM, Dong-Uk PARK, Phil-Jae JEON, Sang-Woo PAE, Da AHN