Patents by Inventor Yuhki Imai

Yuhki Imai 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).

  • Patent number: 8144813
    Abstract: A receiving method according to the present invention adjusts a level of an output voltage signal by switching a gain to be used for converting an inputted current signal to a voltage signal, in a preamplifier. Performing offset compensation on the output voltage signal in an offset compensator, in a post amplifier. Adding a reset signal, whose polarity is made opposite to a polarity of the output voltage signal, to the output voltage signal, in the preamplifier. Detecting the reset signal having added to the output voltage signal, and resetting the offset compensator by use of the detected reset signal, in the post amplifier.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: March 27, 2012
    Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics Corporation
    Inventors: Makoto Nakamura, Yuhki Imai, Masatoshi Tobayashi, Yoshikazu Urabe, Hatsushi Iizuka
  • Publication number: 20070292139
    Abstract: A receiving method according to the present invention adjusts a level of an output voltage signal by switching a gain to be used for converting an inputted current signal to a voltage signal, in a preamplifier. Performing offset compensation on the output voltage signal in an offset compensator, in a post amplifier. Adding a reset signal, whose polarity is made opposite to a polarity of the output voltage signal, to the output voltage signal, in the preamplifier. Detecting the reset signal having added to the output voltage signal, and resetting the offset compensator by use of the detected reset signal, in the post amplifier.
    Type: Application
    Filed: August 2, 2005
    Publication date: December 20, 2007
    Inventors: Makoto Nakamura, Yuhki Imai, Masatoshi Tobayashi, Yoshikazu Urabe, Hatsushi Iizuka
  • Patent number: 5652157
    Abstract: A new design concept is presented and demonstrated for the fabrication of active and passive components in integrated circuit (IC) devices for microwave signal transmission. High circuit packing density is desirable but the current configurations of the conventional flat strip type conductors present physical limitations to achieving such an objective. The new conductor configuration not only overcomes such circuit packing problems of the conventional line design, but provides additional improvements in performance parameters, such as lower resistance and lower parasitic interactions, an ability to fabricate circuits to design specifications and to improve reliability at low cost. The new concept has been applied to the fabrication of transmission lines, capacitors, inductors, air bridges and to formulating the fabrication steps for a FET. Polyamide film enables an improved fabrication step to be performed in the invention, and a new processing technique for polyimide material has also been demonstrated.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: July 29, 1997
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Makoto Hirano, Kazuyoshi Asai, Yuhki Imai, Masami Tokumitsu, Tsuneo Tokumitsu, Ichihiko Toyoda
  • Patent number: 5639686
    Abstract: A new design concept is presented and demonstrated for the fabrication of active and passive components in integrated circuit (IC) devices for microwave signal transmission. High circuit packing density is desirable but the current configurations of the conventional flat strip type conductors present physical limitations to achieving such an objective. The new conductor configuration not only overcomes such circuit packing problems of the conventional line design, but provides additional improvements in performance parameters, such as lower circuit resistance and lower parasitic interactions; an ability to fabricate circuits to design specifications and to improve reliability at low cost. The new concept has been applied to the fabrication of transmission lines, capacitors, inductors, air bridges and to formulating the fabrication steps for a FET.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: June 17, 1997
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Makoto Hirano, Kazuyoshi Asai, Yuhki Imai, Masami Tokumitsu, Tsuneo Tokumitsu, Ichihiko Toyoda
  • Patent number: 5550068
    Abstract: A new design concept is presented and demonstrated for the fabrication of active and passive components in integrated circuit (IC) devices for microwave signal transmission. High circuit packing density is desirable but the current configurations of the conventional flat strip type conductors present physical limitations to achieving such an objective. The new conductor configuration not only overcomes such circuit packing problems of the conventional line design, but provides additional improvements in performance parameters, such as lower circuit resistance and lower parasitic interactions; an ability to fabricate circuits to design specifications and to improve reliability at low cost. The new concept has been applied to the fabrication of transmission lines, capacitors, inductors, air bridges and to formulating the fabrication steps for a FET.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: August 27, 1996
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Makoto Hirano, Kazuyoshi Asai, Yuhki Imai, Masami Tokumitsu, Tsuneo Tokumitsu, Ichihiko Toyoda
  • Patent number: 5281769
    Abstract: A new design concept is presented and demonstrated for the fabrication of active and passive components in integrated circuit (IC) devices for microwave signal transmission. High circuit packing density is desirable but the current configurations of the conventional flat strip type conductors present physical limitations to achieving such an objective. The new conductor configuration not only overcomes such circuit packing problems of the conventional line design, but provides additional improvements in performance parameters, such as lower circuit resistance and lower parasitic interactions; an ability to fabricate circuits to design specifications and to improve reliability at low cost. The new concept has been applied to the fabrication of transmission lines, capacitors, inductors, air bridges and to formulating the fabrication steps for a FET.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: January 25, 1994
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Makoto Hirano, Kazuyoshi Asai, Yuhki Imai, Masami Tokumitsu, Tsuneo Tokumitsu, Ichihiko Toyoda