Patents by Inventor Hirotaka Akaike

Hirotaka Akaike 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).

  • Method and system for insertion and extraction of overhead in SONET/SDH
    Patent number: 7139286
    Abstract: An overhead insertion interface unit connected to a high-speed line via a frame processing unit includes a TOH FIFO, a POH FIFO, and a common gate for transmitting a TOH input request and a POH input request to an external device. Each of the FIFOs receives a TOHAV signal together with TOH data and POH data sequentially, and the frame processing unit performs insertion processing. Overhead extraction processing is performed by the reverse of the operations for insertion processing, using the frame processing unit and the overhead extraction interface unit.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: November 21, 2006
    Assignee: Nec Electronics Corporation
    Inventors: Hirotaka Akaike, Nobuyuki Mizukoshi
  • Method and system for insertion and extraction of overhead in SONET/SDH
    Publication number: 20020141455
    Abstract: An overhead insertion interface unit connected to a high-speed line via a frame processing unit includes a TOH FIFO, a POH FIFO, and a common gate for transmitting a TOH input request and a POH input request to an external device. Each of the FIFOs receives a TOHAV signal together with TOH data and POH data sequentially, and the frame processing unit performs insertion processing. Overhead extraction processing is performed by the reverse of the operations for insertion processing, using the frame processing unit and the overhead extraction interface unit.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 3, 2002
    Applicant: NEC Corporation
    Inventors: Hirotaka Akaike, Nobuyuki Mizukoshi