Patents by Inventor Manabu Inada

Manabu Inada 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).

  • Up-grading method for transmission apparatus
    Patent number: 6088371
    Abstract: An up-grading method for a transmission apparatus including at least one low-speed side interface device, at least one high-speed side interface device, and a cross connection or add/drop MUX device which has at least one of a function of multiplexing a signal from the low-speed side interface device to connect the multiplexed signal to the high-speed side interface device, a function of distributing a signal from the high-speed side interface device to the low-speed side interface device, and a function of establishing physical and logical signal paths between any low-speed side and any high-speed side interface devices.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: July 11, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Manabu Inada, Noriko Itoh, Tetsuya Sugioka