Patents by Inventor Seryung Park

Seryung Park 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).

  • Semiconductor integrated circuit and image processing system using the same
    Patent number: 7620838
    Abstract: A circuit system is provided capable of improving the throughput thereof by eliminating the operational constraint that if the operating frequency of a content addressable memory is lower than the operating frequency of a system LSI, two system clocks should be provided, or the higher frequency should be synchronized with the slower system clock. A clock control circuit (103) for down-converting an internal clock (?1) of a LSI (101) is provided, and a control signal whose frequency is made lower is used to operate a content addressable memory circuit (102).
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: November 17, 2009
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Takashi Koba, Naoyuki Anan, Mikiko Sakai, Seryung Park, Keiichi Higeta
  • Semiconductor integrated circuit and image processing system using the same
    Publication number: 20060085661
    Abstract: A circuit system is provided capable of improving the throughput thereof by eliminating the operational constraint that if the operating frequency of a content addressable memory is lower than the operating frequency of a system LSI, two system clocks should be provided, or the higher frequency should be synchronized with the slower system clock. A clock control circuit (103) for down-converting an internal clock (?1) of a LSI (101) is provided, and a control signal whose frequency is made lower is used to operate a content addressable memory circuit (102).
    Type: Application
    Filed: October 18, 2005
    Publication date: April 20, 2006
    Inventors: Takashi Koba, Naoyuki Anan, Mikiko Sakai, Seryung Park, Keiichi Higeta