Patents by Inventor Takahiro Inauchi

Takahiro Inauchi 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).

  • Differential ring oscillator
    Patent number: 7633351
    Abstract: A differential amplifier circuit includes: a differential transistor pair composed of first and second transistors; a first resistance connected to a junction point of the first and second transistors at one terminal and to a first voltage node at the other terminal; second and third resistances provided between the first and second transistors, respectively, and a second voltage node; and first and second passive circuits respectively connected to the second and third resistances, the load characteristics of the passive circuits changing according to a control signal supplied. A ring oscillator is composed of a plurality of such differential amplifier circuits connected in a loop.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: December 15, 2009
    Assignee: Panasonic Corporation
    Inventors: Kazuhisa Raita, Ichiro Yamane, Yoshitaka Kitao, Toshifumi Hamaguchi, Takahiro Inauchi
  • Ring oscillator and semiconductor integrated circuit and electronic device including the same
    Publication number: 20080061894
    Abstract: A differential amplifier circuit includes: a differential transistor pair composed of first and second transistors; a first resistance connected to a junction point of the first and second transistors at one terminal and to a first voltage node at the other terminal; second and third resistances provided between the first and second transistors, respectively, and a second voltage node; and first and second passive circuits respectively connected to the second and third resistances, the load characteristics of the passive circuits changing according to a control signal supplied. A ring oscillator is composed of a plurality of such differential amplifier circuits connected in a loop.
    Type: Application
    Filed: August 23, 2007
    Publication date: March 13, 2008
    Inventors: Kazuhisa Raita, Ichiro Yamane, Yoshitaka Kitao, Toshifumi Hamaguchi, Takahiro Inauchi