Patents by Inventor Koichi Yamashita

Koichi Yamashita 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: 20240137114
    Abstract: A transmission power controller includes: a control unit that outputs, within a range not exceeding a TPC set point, a TPC controlled variable that increases transmission power of a transmission system device more in a case of a larger attenuation of a reception signal received from a communication satellite; a data accumulation unit that accumulates the TPC controlled variable; an appropriate value extraction unit that extracts, as a TPC appropriate set point, the largest TPC controlled variable among the accumulated TPC controlled variables except a top predetermined proportion; and an updating unit that outputs, to the transmission system device, a reference transmission power increase signal that increases the reference transmission power more in a case of a larger difference between the TPC set point and the TPC appropriate set point and updates the TPC set point with the TPC appropriate set point. Thereby, efficient use of a transmitter is enabled.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 25, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Koichi HARADA, Fumihiro YAMASHITA, Hiroki SHIBAYAMA
  • Publication number: 20240121637
    Abstract: A wireless communication monitoring system for monitoring a hardware failure of a wireless communication unit of a wireless communication device using a remote monitoring control device, in which the wireless communication device transmits or receives a predetermined radio signal to or from a monitoring device added or attached to the host device to perform a life and death check for checking an operation, and the remote monitoring control device detects a hardware failure of the wireless communication unit of the wireless communication device on the basis of a result of the life and death check received from the wireless communication device. This makes it possible to detect a failure that cannot be detected from information obtained from a device state request to a wireless communication device of the related art.
    Type: Application
    Filed: February 17, 2021
    Publication date: April 11, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Akira MATSUSHITA, Mitsuru NISHINO, Munehiro MATSUI, Masaki SHIMA, Koichi HARADA, Hiroki SHIBAYAMA, Fumihiro YAMASHITA
  • Publication number: 20240097344
    Abstract: A reflector antenna includes: a radiator that radiates a radio wave; a main reflector that reflects the radio wave radiated from the radiator in a communication direction; an expansion panel that is attached to at least a part of the main reflector to increase an area of the main reflector; and a first adjustment unit that changes a position of the radiator, or a second adjustment unit that replaces the radiator with a radiator having a different radiation angle. This configuration makes it possible to implement a large-aperture antenna having excellent transportability and operability without preparing another antenna having a large aperture and replacing a standard antenna.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 21, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Koichi HARADA, Masaki SHIMA, Hiroki SHIBAYAMA, Fumihiro YAMASHITA
  • Patent number: 11937009
    Abstract: Provided is an infrared imaging device capable of reducing streak noise by calculating correction coefficients for correcting streak noise from a single image. The infrared imaging device includes: a thermal image generator to generate a single thermal image on the basis of a signal from a thermal image sensor; a correction coefficient calculator to calculate multiple correction coefficients included in a correction equation for converting pixel values of pixels included in the single thermal image into target values in which streak noise is reduced; and a thermal image corrector to correct a thermal image generated by the thermal image generator by using the multiple correction coefficients, wherein the correction coefficient calculator calculates the multiple correction coefficients on the basis of difference between pixel values of pixels arranged in a direction in which the streak noise occurs in the single thermal image.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 19, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kohei Kurihara, Koichi Yamashita, Daisuke Suzuki
  • Publication number: 20240088287
    Abstract: A semiconductor device includes a semiconductor substrate, a first insulating film formed on an upper surface of the semiconductor substrate in an outer peripheral region so as to surround a cell region in plan view, and a resistive element formed on the first insulating film so as to surround the cell region in plan view. A second insulating film having a thickness thinner than that of the first insulating film is formed on the upper surface of the semiconductor substrate in the outer peripheral region. A dummy pattern is formed from a portion over the second insulating film to a portion over the first insulating film so as to cover a step occurring between the second insulating film and the first insulating film.
    Type: Application
    Filed: July 5, 2023
    Publication date: March 14, 2024
    Inventors: Takahiro OHARA, Koichi ARAI, Yasunori YAMASHITA, Hideyuki YASHIMA
  • Patent number: 11861847
    Abstract: A background image generator (21) stores, in a storage device (3), a skeleton image obtained by calculating a feature quantity for each of multiple first thermal images (Din1) obtained by imaging by a thermal image sensor (1) in the same field of view or multiple sorted images (Dc) generated from the first thermal images, generating an average image from the first thermal images or sorted images, sharpening the average image, and then extracting a skeleton component. An image corrector (22) corrects, by using the skeleton image stored in the storage device (3), a second thermal image (Din2) obtained by imaging by the thermal image sensor in the same field of view as the first thermal images, thereby generating a corrected thermal image. It is possible to generate a sharp thermal image with a high S/N ratio.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: January 2, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kohei Kurihara, Koichi Yamashita, Daisuke Suzuki
  • Publication number: 20230177653
    Abstract: The infrared image processing device includes a thermal image sensor that receives infrared rays and outputs a signal corresponding to the infrared rays, a thermal image generation unit that generates a plurality of thermal images based on the signal, a smoothing processing unit that performs a smoothing process on each pixel of each of the plurality of thermal images by using a pixel value of a vicinal pixel, thereby calculating a plurality of smoothed images and calculating smoothed pixel values that are each image’s pixel values after undergoing the smoothing, a correction coefficient calculation unit that calculates a correction coefficient set including a first correction coefficient and a second correction coefficient from the thermal images and the smoothed images, and a thermal image correction unit that corrects the thermal images by using the correction coefficient set.
    Type: Application
    Filed: June 25, 2020
    Publication date: June 8, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Toshiki FUJINO, Kohei KURIHARA, Koichi YAMASHITA, Daisuke SUZUKI
  • Publication number: 20220315383
    Abstract: A testing method for an unintended car movement protection device for an elevator, which can shorten the time required for performing the operation test, is disclosed.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 6, 2022
    Inventors: Masaki MIYAMAE, Koichi YAMASHITA, Jun TORIYABE
  • Publication number: 20220169480
    Abstract: An elevator system includes a car that ascends and descends a hoist way, a power feeding device installed at a specific power feeding point of the hoist way, a power receiving device that receives power from the power feeding device when the car stops at the power feeding point, a battery that is charged by the received power, and an elevator control panel that controls ascent and descent of the car. When the remaining capacity of the battery is equal to or less than a predetermined capacity, the elevator control panel performs a rescue operation of a passenger in the car, and after the rescue operation, performs an automatic search operation of searching for a power feeding point where the power feeding device is installed according to the remaining capacity of the battery.
    Type: Application
    Filed: October 24, 2019
    Publication date: June 2, 2022
    Inventors: Tomoaki MAEHARA, Koichi YAMASHITA, Yuki SAITO, Toshiharu MATSUKUMA, Takahiro HATORI, Satoru TORIYABE, Hayate TANABAYASHI
  • Publication number: 20220148192
    Abstract: A background image generator (21) stores, in a storage device (3), a skeleton image obtained by calculating a feature quantity for each of multiple first thermal images (Din1) obtained by imaging by a thermal image sensor (1) in the same field of view or multiple sorted images (Dc) generated from the first thermal images, generating an average image from the first thermal images or sorted images, sharpening the average image, and then extracting a skeleton component. An image corrector (22) corrects, by using the skeleton image stored in the storage device (3), a second thermal image (Din2) obtained by imaging by the thermal image sensor in the same field of view as the first thermal images, thereby generating a corrected thermal image. It is possible to generate a sharp thermal image with a high S/N ratio.
    Type: Application
    Filed: March 11, 2019
    Publication date: May 12, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kohei KURIHARA, Koichi YAMASHITA, Daisuke SUZUKI
  • Publication number: 20220094860
    Abstract: Provided is an infrared imaging device capable of reducing streak noise by calculating correction coefficients for correcting streak noise from a single image. The infrared imaging device includes: a thermal image generator to generate a single thermal image on the basis of a signal from a thermal image sensor; a correction coefficient calculator to calculate multiple correction coefficients included in a correction equation for converting pixel values of pixels included in the single thermal image into target values in which streak noise is reduced; and a thermal image corrector to correct a thermal image generated by the thermal image generator by using the multiple correction coefficients, wherein the correction coefficient calculator calculates the multiple correction coefficients on the basis of difference between pixel values of pixels arranged in a direction in which the streak noise occurs in the single thermal image.
    Type: Application
    Filed: February 7, 2019
    Publication date: March 24, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kohei KURIHARA, Koichi YAMASHITA, Daisuke SUZUKI
  • Publication number: 20220034085
    Abstract: An acoustic arrangement shelf is configured to be capable of facilitating adjustment of acoustic properties and be capable of enhancing aesthetic appeal of a space for which the acoustic properties are to be adjusted. The acoustic arrangement shelf includes: a shelf frame including a plurality of segments; and an acoustic adjustment member configured to be removably placed in at least one of the segments and change a property of input sound.
    Type: Application
    Filed: March 14, 2019
    Publication date: February 3, 2022
    Applicant: Nihon Onkyo Engineering Co., Ltd.
    Inventors: Megumi Kono, Yasuhiro Sakiyama, Kazuhiro Makino, Kenta Negi, Masayuki Hirata, Shinji Ohashi, Hiroshi Ohyama, Koichi Yamashita
  • Patent number: 11082650
    Abstract: An image capturing device includes an image sensor and processing circuitry. The processing circuitry calculates a pixel value fluctuation amount as a fluctuation amount of each of the pixel values; calculates a line fluctuation amount as an average value of N pixel value fluctuation amounts of N pixels; calculates a variance value of the N pixel value fluctuation amounts from the N pixel value fluctuation amounts and the line fluctuation amount; calculates a movement adaptive weight based on the variance value; calculates a line fluctuation noise correction amount, corresponding to each of the pixel values outputted from the image sensor, from the line fluctuation amount and the movement adaptive weight; and corrects each of the pixel values outputted from the image sensor by using the line fluctuation noise correction amount and thereby generates an image signal after the correction.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: August 3, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toshiki Fujino, Kohei Kurihara, Koichi Yamashita, Daisuke Suzuki
  • Publication number: 20210235033
    Abstract: An image capturing device includes an image sensor and processing circuitry. The processing circuitry calculates a pixel value fluctuation amount as a fluctuation amount of each of the pixel values; calculates a line fluctuation amount as an average value of N pixel value fluctuation amounts of N pixels; calculates a variance value of the N pixel value fluctuation amounts from the N pixel value fluctuation amounts and the line fluctuation amount; calculates a movement adaptive weight based on the variance value; calculates a line fluctuation noise correction amount, corresponding to each of the pixel values outputted from the image sensor, from the line fluctuation amount and the movement adaptive weight; and corrects each of the pixel values outputted from the image sensor by using the line fluctuation noise correction amount and thereby generates an image signal after the correction.
    Type: Application
    Filed: June 29, 2018
    Publication date: July 29, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Toshiki FUJINO, Kohei KURIHARA, Koichi YAMASHITA, Daisuke SUZUKI
  • Publication number: 20210213552
    Abstract: A method and an apparatus efficiently and reliably cut a steel frame. The cutting method includes locating a cutting torch apart from the steel frame held by a holding device in a direction along a cutting surface, moving the cutting torch from a cutting start position to a first cutting end position in a first feed direction perpendicular to a supply direction along the cutting surface, while applying a flame from a fire port of the cutting torch in the supply direction and supplying cutting oxygen to thereby cut a part of the cutting surface, stopping the cutting torch at the first cutting end position and thereafter cutting an uncut part by moving the cutting torch from the first cutting end position in a second feed direction opposite to the first feed direction.
    Type: Application
    Filed: April 15, 2019
    Publication date: July 15, 2021
    Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takanori YAMASAKI, Koichi YAMASHITA, Yoshinobu HOSAKA, Tsuguhito FUJITA
  • Patent number: 10955235
    Abstract: A distance measurement apparatus includes: a control unit that makes an imaging unit acquire a plurality of first captured images corresponding to light patterns when making an optical system set the focal length to a first focal length, and that makes the imaging unit acquire second captured images corresponding to the light patterns when making the optical system set the focal length to a second focal length; a first distance measurement unit that determines presence or absence of an image blur and acquires a first distance to a subject from an image blur index value indicating an extent of the image blur; a second distance measurement unit that acquires a second distance to the subject based on triangulation; and a measurement result synthesis unit that outputs the first distance for a pixel with the image blur and that outputs the second distance for a pixel with no image blur.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: March 23, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeo Fujita, Koichi Yamashita, Narihiro Matoba
  • Patent number: 10533846
    Abstract: An image generation device includes an imaging unit 11, a projection unit 22, and a distance information generation unit 18, and a projection pattern includes unit patterns arranged in a plurality of rows in a first direction and in a plurality of columns in a second direction. A plurality of light dots include first dots and second dots which are light dots of different states from each other; the unit patterns arranged in the first direction have the light dot arrangements identical with each other; the unit patterns arranged in the second direction have light dot arrangements different from each other; the number of first dots among a plurality of light dots arranged in the first direction in each of the unit patterns is the same fixed number in each row in the second direction; and in a location other than the unit pattern, the number of first dots included in a row of the same length as the unit pattern in the second direction differs from the fixed number, in a certain row in the second direction.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: January 14, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeo Fujita, Koichi Yamashita, Narihiro Matoba
  • Patent number: 10453214
    Abstract: An object having a high attention degree is selected from objects detected by a detection means, brightness of a captured image is calculated by using an attention region corresponding to the selected object as a detection frame, and exposure control is performed based on the calculated brightness. The attention degree is evaluated higher with the decrease in the distance. Alternatively, the attention degree is evaluated higher as the direction becomes closer to the traveling direction. The attention region is made larger with the decrease in the distance to the object. It is also possible to judge the type of the object and determine the size of the attention region based on the result of the judgment. A subject to be paid attention to is made clearly visible.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: October 22, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takeo Fujita, Koichi Yamashita, Narihiro Matoba
  • Patent number: 10171733
    Abstract: In a camera which electronically realizes panning, tilting, and zooming, on the basis of the luminance detected in each frame period (n?1), a condition of exposure for two frame periods thereafter (n+1), and digital gain for three frame periods thereafter (n+2) are set. When an instruction for changing the extracted region is received in a certain frame period (n?1), the region extracted from the image is changed three frame periods thereafter. It is possible to achieve a stable exposure control by which the luminance of the image varies little even when the region extracted from the image is switched.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: January 1, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeo Fujita, Koichi Yamashita, Narihiro Matoba
  • Publication number: 20180372484
    Abstract: A distance measurement apparatus includes: a control unit that makes an imaging unit acquire a plurality of first captured images corresponding to light patterns when making an optical system set the focal length to a first focal length, and that makes the imaging unit acquire second captured images corresponding to the light patterns when making the optical system set the focal length to a second focal length; a first distance measurement unit that determines presence or absence of an image blur and acquires a first distance to a subject from an image blur index value indicating an extent of the image blur; a second distance measurement unit that acquires a second distance to the subject based on triangulation; and a measurement result synthesis unit that outputs the first distance for a pixel with the image blur and that outputs the second distance for a pixel with no image blur.
    Type: Application
    Filed: January 6, 2017
    Publication date: December 27, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeo FUJITA, Koichi YAMASHITA, Narihiro MATOBA