Patents by Inventor Ding-jyan Syu

Ding-jyan Syu 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).

  • LIFM algorithm for security association database lookup in IPSEC application
    Patent number: 7100043
    Abstract: Current applications used in security system for encryption/decryption/authentication require intense CPU computation for an SAD search. Therefore, a part of the SAD is planted into an ASIC in order to lessen the load of the CPU. The invention provides a high-performance lookup method that is “LIFM” adapted to the ASIC. Initially, the ASIC makes a perfect match by comparing the SAD_index field of all items allocated in the ASIC with an incoming packet to fetch the required SAD_key. If there is no match, the software and hardware are started by issuing an interrupt from the ASIC until the CPU finds a perfectly matched item. Then, the software level updates the perfectly matched item in the ASIC.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: August 29, 2006
    Assignee: ADMtek Incorporated
    Inventors: Fang-cheng Liu, Ding-jyan Syu
  • Lifm algorithm for security association database lookup in IPSEC application
    Publication number: 20030126428
    Abstract: Current applications used in security system for encryption/decryption/authentication require intense CPU computation for an SAD search. Therefore, a part of the SAD is planted into an ASIC in order to lessen the load of the CPU.
    Type: Application
    Filed: April 19, 2002
    Publication date: July 3, 2003
    Inventors: Fang-cheng Liu, Ding-jyan Syu