Patents by Inventor Yuji Akiyama

Yuji Akiyama 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: 20240339747
    Abstract: An antenna module includes: a substrate with at least the top surface being a single crystal of silicon carbide; a single-crystal graphene layer provided in contact with the top surface of the substrate; and a gallium nitride layer on the substrate. The antenna module is characterized in that an antenna element portion is formed by patterning a region in the graphene layer that is not covered by the gallium nitride layer, an active element portion is formed in the gallium nitride layer, and a connection portion connecting the antenna element portion and the active element portion are integrally formed.
    Type: Application
    Filed: October 21, 2022
    Publication date: October 10, 2024
    Applicants: TOHOKU UNIVERSITY, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hirokazu FUKIDOME, Tetsuya SUEMITSU, Issei WATANABE, Minoru KAWAHARA, Shoji AKIYAMA, Yuji TOBISAKA, Makoto KAWAI
  • Publication number: 20240295593
    Abstract: A signal analysis apparatus includes: a reception unit outputting sampling sequences obtained by adding different delay times and sampling each signal at a sampling rate lower than a Nyquist rate; a time-frequency conversion unit converting each sampling sequence to a frequency domain signal; a signal processing unit collectively performing phase compensation processing and processing for canceling phase rotation between the sampling sequences; a frequency estimation unit estimating frequency of the target signal by determining a sub-Nyquist zone in which the target signal has been folded; a frequency selection unit selecting a frequency group with a higher estimated spectrum amplitude value based on a sum of values for each sub-Nyquist zone, the values being obtained by multiplication of the sampling sequences by the corresponding coefficients; and a separation unit performing separation processing for separation of an error in the target signal by using the frequency group selected.
    Type: Application
    Filed: May 15, 2024
    Publication date: September 5, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventor: Yuji AKIYAMA
  • Publication number: 20230394709
    Abstract: A signal processing device includes: a window function unit that performs window function processing on a Fourier transform frame cut from time-series signal data; a Fourier transform unit that transforms, into information in a frequency domain, the Fourier transform frame subjected to the window function processing; a color space conversion unit that generates spectrogram data by converting a phase angle of a complex amplitude in the frequency domain into a hue and performing conversion that associates an absolute value of the complex amplitude with brightness by mapping, the spectrogram data being defined so as to correspond to a two-dimensional plane of time and frequency; and a deep learning processing unit that detects or identifies a signal by convolutional processing and fully connected processing on the spectrogram data.
    Type: Application
    Filed: August 23, 2023
    Publication date: December 7, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventor: Yuji AKIYAMA
  • Publication number: 20230062385
    Abstract: A data compression apparatus includes a receiver that outputs sampling sequences corresponding to signals obtained by adding different delay times to different signals obtained by branching a target signal into a plurality of lines, and sampling the signals at a sampling rate less than the Nyquist rate, and an encoder that converts the sampling sequences into compressed data. The encoder includes a sub-FFT that converts the sampling sequences into frequency-domain signals, a signal processing unit that performs, at one time, phase compensation processing for sub-Nyquist zones of the sampling sequences, and processing to cancel phase rotation, a target frequency estimator that determines into which sub-Nyquist zone the target signal has been folded and estimates the frequency of the target signal, and an encoding unit that converts a value representing the sub-Nyquist zone and the corresponding amplitude value into the compressed data and output the compressed data.
    Type: Application
    Filed: November 10, 2022
    Publication date: March 2, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventor: Yuji AKIYAMA
  • Publication number: 20220224365
    Abstract: A signal analysis device includes: a plurality of time-frequency conversion units that are each provided corresponding to one of a plurality of sampling sequences and convert a corresponding sampling sequence, the plurality of sampling sequences having been subjected to sampling performed at a sampling rate lower than a Nyquist rate from a plurality of signal systems generated by branching a signal of interest, and having received addition of delay times different from each other; signal processing units that collectively perform a phase compensation process corresponding to a sub-Nyquist zone of the sampling sequence output by a corresponding time-frequency conversion unit and a process of canceling phase rotation caused by a delay time difference between the plurality of sampling sequences; and a frequency estimation unit that estimates a frequency of the signal of interest by determining from which sub-Nyquist zone the signal of interest has been folded.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventor: Yuji AKIYAMA
  • Patent number: 11094232
    Abstract: In a viewing object display set, it is possible to prevent a reduction in a sense of reality when a viewing object is seen. Specifically, the display set for viewing the viewing object includes the viewing object that is attached to a display surface and an object for visual effect that is provided on a viewing position side with respect to the viewing object and shields at least a portion of the viewing object. The object for visual effect is arranged so as to shield the boundary between the viewing object and the display surface.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: August 17, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yumi Yanai, Shinichi Miyazaki, Yuji Akiyama
  • Patent number: 10992851
    Abstract: According to an embodiment of the present invention, an image processing apparatus capable of properly controlling sharpness of an output image and outputting the image is provided. More specifically, the image processing apparatus comprises: a setting unit configured to set an image processing condition for performing image processing to image data of an input photographic image based on an output characteristic of an output apparatus that influences sharpness of an image output from the output apparatus; an obtaining unit configured to obtain information equivalent to a distance from a focal plane in the photographic image; and an image processing unit configured to perform image processing to the image data based on the information obtained by the obtaining unit and the image processing condition set by the setting unit.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: April 27, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Miyazaki, Yumi Yanai, Yuji Akiyama
  • Patent number: 10972714
    Abstract: Image data of a photographic image is inputted, and based on information related to a distance from a focal plane when capture is performed, the sharpness of an image that the inputted image data represents is controlled. Image data resulting from the sharpness control being performed is outputted. In the sharpness control, the sharpness control amount is set in accordance with the luminance of a peripheral region that neighbors an in-focus region that is determined to be in-focus in the image.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: April 6, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yumi Yanai, Shinichi Miyazaki, Yuji Akiyama
  • Patent number: 10958888
    Abstract: A resolution conversion of image data of a photographic image is performed, and based on information related to a distance from a focal plane in the photographic image and the resolution conversion, processing to control the sharpness of an image that the image data resulting from the resolution conversion represents is performed.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: March 23, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yumi Yanai, Shinichi Miyazaki, Yuji Akiyama
  • Publication number: 20210073438
    Abstract: An optimization system for optimizing a parameter using simulated annealing includes: a condition setting unit that sets conditions including a temperature to be used, a parameter candidate to be evaluated, and a measurement time that is a time for measuring an evaluation value of a cost function for evaluating the parameter candidate; an evaluation unit that measures the evaluation value using the conditions; an acceptance determination unit that determines whether to accept the parameter candidate based on the evaluation value; and a termination determination unit that determines whether a predetermined termination condition is satisfied. An evaluation process including setting of the conditions, measurement of the evaluation value, and acceptance determination for the parameter candidate is repeated until the termination condition is satisfied. The condition setting unit determines the measurement time based on the temperature used in the evaluation process each time the evaluation process is repeated.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 11, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventor: Yuji AKIYAMA
  • Patent number: 10466396
    Abstract: A liquid crystal display device containing a color filter layer, and a light-emitting device which contains a light source and a color conversion layer containing a quantum dot; wherein the color filter layer at least contains a blue color filter, a green color filter and a red color filter, as defined in the specification; an emission spectrum of light emitted from the light-emitting device has a first emission peak, a second emission peak and a third emission peak; the wavelength (?1) of the first emission peak ranges from 420 to 480 nm, the wavelength (?2) of the second emission peak ranges from 500 to 550 nm, and the wavelength (?3) of the third emission peak ranges from 580 to 650 nm.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: November 5, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yuko Shirouchi, Yuji Akiyama
  • Patent number: 10414118
    Abstract: There is provided a microchip including at least two substrates each comprising a thermoplastic resin, and at least one member comprising a material having a heat distortion temperature higher than a heat distortion temperature of the thermoplastic resin, the at least one member including at least one engagement end including a protrusion extending between the at least two substrates, wherein the at least one member is fixed to the at least two substrates by the protrusion being held between the at least two substrates by at least one wall surface that is thermally deformed by thermocompression.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: September 17, 2019
    Assignee: SONY CORPORATION
    Inventors: Tomomi Yukumoto, Takeshi Yamasaki, Shoji Akiyama, Yuji Akiyama
  • Publication number: 20190253689
    Abstract: Image data of a photographic image is inputted, and based on information related to a distance from a focal plane when capture is performed, the sharpness of an image that the inputted image data represents is controlled. Image data resulting from the sharpness control being performed is outputted. In the sharpness control, the sharpness control amount is set in accordance with the luminance of a peripheral region that neighbors an in-focus region that is determined to be in-focus in the image.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 15, 2019
    Inventors: Yumi Yanai, Shinichi Miyazaki, Yuji Akiyama
  • Publication number: 20190253690
    Abstract: A resolution conversion of image data of a photographic image is performed, and based on information related to a distance from a focal plane in the photographic image and the resolution conversion, processing to control the sharpness of an image that the image data resulting from the resolution conversion represents is performed.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 15, 2019
    Inventors: Yumi Yanai, Shinichi Miyazaki, Yuji Akiyama
  • Publication number: 20190253609
    Abstract: According to an embodiment of the present invention, an image processing apparatus capable of properly controlling sharpness of an output image and outputting the image is provided. More specifically, the image processing apparatus comprises: a setting unit configured to set an image processing condition for performing image processing to image data of an input photographic image based on an output characteristic of an output apparatus that influences sharpness of an image output from the output apparatus; an obtaining unit configured to obtain information equivalent to a distance from a focal plane in the photographic image; and an image processing unit configured to perform image processing to the image data based on the information obtained by the obtaining unit and the image processing condition set by the setting unit.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 15, 2019
    Inventors: Shinichi Miyazaki, Yumi Yanai, Yuji Akiyama
  • Patent number: 10315194
    Abstract: A chip device is provided. The chip device includes a flow channel configured to pass a fluid therein; an ejection portion including an opening toward an end face of a substrate layer including at least one layer, the ejection portion is configured to provide the fluid from the flow channel, and a cavity provided between the opening of the ejection portion and the end face of the substrate layer, wherein at least a portion of the cavity is provided at the end face of the substrate layer.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 11, 2019
    Assignee: Sony Corporation
    Inventors: Yuji Akiyama, Shoji Akiyama, Takeshi Yamasaki
  • Publication number: 20190122594
    Abstract: In a viewing object display set, it is possible to prevent a reduction in a sense of reality when a viewing object is seen. Specifically, the display set for viewing the viewing object includes the viewing object that is attached to a display surface and an object for visual effect that is provided on a viewing position side with respect to the viewing object and shields at least a portion of the viewing object. The object for visual effect is arranged so as to shield the boundary between the viewing object and the display surface.
    Type: Application
    Filed: December 19, 2018
    Publication date: April 25, 2019
    Inventors: Yumi Yanai, Shinichi Miyazaki, Yuji Akiyama
  • Patent number: D869308
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 10, 2019
    Assignee: SONY CORPORATION
    Inventors: Yuji Akiyama, Shoji Akiyama, Gakuji Hashimoto, Hiroto Kasai, Masaya Kakuta, Takeshi Yamasaki, Tatsumi Ito, Masataka Shinoda
  • Patent number: D907242
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 5, 2021
    Assignee: SONY CORPORATION
    Inventors: Masataka Shinoda, Shoji Akiyama, Masaya Kakuta, Takeshi Yamasaki, Tatsumi Ito, Yuji Akiyama, Gakuji Hashimoto, Hiroto Kasai
  • Patent number: D960740
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: August 16, 2022
    Assignee: SONY CORPORATION
    Inventors: Yuji Akiyama, Shoji Akiyama, Gakuji Hashimoto, Hiroto Kasai, Masaya Kakuta, Takeshi Yamasaki, Tatsumi Ito, Masataka Shinoda