Patents by Inventor Yoshinobu Kasumi

Yoshinobu Kasumi 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: 7647032
    Abstract: An oscillation control device for controlling a frequency of an oscillator located at the remote site from a standard laboratory having a standard oscillator. The control device includes: a comparison section to compare a frequency of the frequency signal synchronized with a radio signal produced by a signal processing section with a frequency of a oscillation signal outputted from an oscillator to be controlled, an acquisition section to obtain, through a communication network, a comparison result which is obtained by a comparison of a frequency of the standard oscillator held by the standard laboratory and a frequency of the radio signal, a calculation section to calculate deviation between the frequency of the oscillator to be controlled and the frequency of the standard oscillator based on their comparison, and a control section to control the frequency of the oscillator to be controlled, based on the deviation calculated.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: January 12, 2010
    Assignees: National Institute of Advanced Industrial Science and Technology, Yokogawa Electric Corporation
    Inventors: Michito Imae, Tomonari Suzuyama, Yasuhisa Fujii, Yoshinobu Kasumi, Eiji Ogita, Toshiaki Kawakami
  • Publication number: 20070077902
    Abstract: An oscillation control device for controlling a frequency of an oscillator located at the remote site from a standard laboratory having a standard oscillator. The control device includes: a comparison section to compare a frequency of the frequency signal synchronized with a radio signal produced by a signal processing section with a frequency of a oscillation signal outputted from an oscillator to be controlled, an acquisition section to obtain, through a communication network, a comparison result which is obtained by a comparison of a frequency of the standard oscillator held by the standard laboratory and a frequency of the radio signal, a calculation section to calculate deviation between the frequency of the oscillator to be controlled and the frequency of the standard oscillator based on their comparison, and a control section to control the frequency of the oscillator to be controlled, based on the deviation calculated.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 5, 2007
    Inventors: Michito Imae, Tomonari Suzuyama, Yasuhisa Fujii, Yoshinobu Kasumi, Eiji Ogita, Toshiaki Kawakami