Patents by Inventor Yasuyuki Masunaga

Yasuyuki Masunaga 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).

  • Publication number: 20240264195
    Abstract: An ultrasonic time measurement device measures a propagation time of a measurement wave transmitted from a first sensor to a second sensor. The device includes a transmission circuit that causes the first sensor to repeatedly transmit measurement waves one at a time and a reception circuit that detects reception at the second sensor, of the respective measurement wave transmitted from the first sensor. The device further measures elapsed times for the measurement waves, each of the elapsed times being an elapsed time from a reference time to a reception time of the respective measurement wave received by the second sensor and calculate the propagation time of the measurement wave from the first sensor to the second sensor based on the elapsed times measured by the time measurer.
    Type: Application
    Filed: December 27, 2023
    Publication date: August 8, 2024
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Akira MORITA, Hojun YAMAUCHI, Yasuyuki MASUNAGA, Kazuhiro KOIZUMI, Masami KISHIRO, Hideo KANAI, Shiori YAMASHITA
  • Patent number: 10061034
    Abstract: A signal processing device (1) includes a noise generator (11) configured to have a noise strength set therein and to output a noise with a set noise strength; a noise adder (12) configured to add the noise to an input signal including a weak signal as a measurement target to generate a noise-added signal; a threshold processing circuit (13) configured to perform threshold processing on the noise-added signal; an evaluating circuit (20) configured to extract, from an output signal output from the threshold processing circuit, a pulse signal component that meets a pulse waveform condition and to evaluate the extracted pulse signal; and a strength setting circuit (31) configured to set, in the noise generator, a noise strength to a desired value based on an output from the evaluating circuit.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: August 28, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Yasuyuki Masunaga, Takamasa Asano, Kazuhiro Koizumi
  • Patent number: 9983317
    Abstract: A signal processing device for detecting a weak signal in an input signal. The device includes first and second pulse detectors and a determining circuit. The first pulse detector adds noise to the input signal, and processes the noise-added signal using a first threshold, to thereby output a first signal having a first pulse waveform component, which corresponds to an interval in which a level of the noise-added input signal exceeds the first threshold. The second pulse detector receives the input signal in parallel with the first pulse detector, and processes the input signal using a second threshold, to thereby output a second signal having a second pulse waveform component, which corresponds to an interval in which a level of the input signal exceeds the second threshold. The determining circuit determines whether each of the first and second pulse waveform components conforms to the weak signal.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: May 29, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Yasuyuki Masunaga, Takamasa Asano, Kazuhiro Koizumi
  • Publication number: 20170059718
    Abstract: A signal processing device for detecting a weak signal in an input signal. The device includes first and second pulse detectors and a determining circuit. The first pulse detector adds noise to the input signal, and processes the noise-added signal using a first threshold, to thereby output a first signal having a first pulse waveform component, which corresponds to an interval in which a level of the noise-added input signal exceeds the first threshold. The second pulse detector receives the input signal in parallel with the first pulse detector, and processes the input signal using a second threshold, to thereby output a second signal having a second pulse waveform component, which corresponds to an interval in which a level of the input signal exceeds the second threshold. The determining circuit determines whether each of the first and second pulse waveform components conforms to the weak signal.
    Type: Application
    Filed: June 30, 2016
    Publication date: March 2, 2017
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Yasuyuki MASUNAGA, Takamasa ASANO, Kazuhiro KOIZUMI
  • Publication number: 20160356896
    Abstract: A signal processing device (1) includes a noise generator (11) configured to have a noise strength set therein and to output a noise with a set noise strength; a noise adder (12) configured to add the noise to an input signal including a weak signal as a measurement target to generate a noise-added signal; a threshold processing circuit (13) configured to perform threshold processing on the noise-added signal; an evaluating circuit (20) configured to extract, from an output signal output from the threshold processing circuit, a pulse signal component that meets a pulse waveform condition and to evaluate the extracted pulse signal; and a strength setting circuit (31) configured to set, in the noise generator, a noise strength to a desired value based on an output from the evaluating circuit.
    Type: Application
    Filed: March 10, 2016
    Publication date: December 8, 2016
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Yasuyuki MASUNAGA, Takamasa ASANO, Kazuhiro KOIZUMI
  • Patent number: 5581785
    Abstract: The non-volatile memory like an EPROM is built in the disk storage device in association with the built-in processor. The non-volatile memory stores the directory data of the setting data necessary for loading the basic program to the computer. The non-volatile memory also stores the directory data of the stored disk data to omit track seek time of the head and rotation time of the disk during the data reading/writing operation. Thus, it is possible to shorten the preliminary starting time from power supply connection until the host computer is accessible to the disk storage device, and the access time at every data reading/writing operation.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: December 3, 1996
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Kunihiro Nakamura, Yasuyuki Masunaga