Patents Assigned to Hitachi Kokusai Electric Inc.
  • Patent number: 11469832
    Abstract: A control station device includes a wireless machine having an interference determination unit that uses one or multiple methods for a received signal to determine in real time whether interference has occurred, a multi-wave simultaneous reception start determination unit that causes received interfering waveform information to be held in a memory and determines whether a plurality of signals have been simultaneously terminated, and an alarm display unit that issues a first alarm indicating an interference state and a second alarm indicating termination of simultaneous transmission based on information from the interference determination unit and information from the multi-wave simultaneous reception start determination unit.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: October 11, 2022
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota Kito, Yasuhiko Suzuki
  • Publication number: 20220278657
    Abstract: In order to operate a power amplifier for synthesizing a plurality of amplifier circuits with high efficiency, the gate voltages of the field-effect transistors (FETs) of the plurality of amplifier circuits are adjusted according to an individual difference in saturated power between the amplifier circuits. Specifically, the output ratios of the amplifier circuits (AMP-4, 8) with low saturated power are reduced, whereas the output ratios of the amplifier circuits (AMP-2, 6) with high saturated power are increased. Thus, a device is operated with high efficiency.
    Type: Application
    Filed: September 25, 2019
    Publication date: September 1, 2022
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Yusaburo GOTO
  • Patent number: 11414110
    Abstract: There is provided a train monitoring system using a train monitoring device that is mounted on a train and uses a plurality of cameras for imaging around the train from different sides. The train monitoring device includes a control unit that is configured to, when the train stops at a station, select one of the plurality of cameras as a rear imaging camera for imaging a rear side in a traveling direction of the train, after the train departs from the station, acquire image data imaged by the rear imaging camera, and transmit the image data to the outside.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: August 16, 2022
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Yohei Yamamoto
  • Patent number: 11394885
    Abstract: A predetermined image processing is carried out on the images that have been taken by the cameras 101 through 108 attached to a side of the cars that form a train before the images are displayed on the monitor 301 that is mounted in the train. That is to say, as a first image processing, among the images to be displayed, a left-right inversion process is carried out on the images where the positional relationship between the cars and the platform in the image is opposite between left and right to the positional relationship as viewed in the direction in which the train is to travel. In addition, as a second image processing, a cutout process is carried out on the images to be displayed so that the cutout regions differ in accordance with the opening and closing state of the doors.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: July 19, 2022
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Ryuichi Saito, Yohei Yamamoto, Takahiro Funahashi
  • Patent number: 11373409
    Abstract: The structure examination support system 100 in the present example is provided with a GNSS receiver 120 that measures the current location, an image pick-up device 110 that photographs a target, and a calculating device 130 that controls the image pick-up device 110, where these are equipped in a moving body. The computing device 130 controls the image pick-up device 110 on the basis of the installation location of the target that has been set in advance, the current location that has been measured by the GNSS receiver 120, and the moving speed of the vehicle so as to repeat photography a number of times, and carries out an image recognition process on each of the plurality of images outputted from the image pick-up device 110, and thus selects an image where the target is photographed and that is appropriate for the examination.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: June 28, 2022
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Yu Sugimura, Kazunari Iwanaga, Yohei Akimoto
  • Publication number: 20220186368
    Abstract: A vaporization system includes a vaporization chamber having a first portion and a second portion. A first fluid supply part is connected to the first portion of the vaporization chamber, and configured to supply a mixed fluid in which a first carrier gas and a liquid precursor are mixed, toward the second portion. A second fluid supply part is configured to supply a second carrier gas toward the mixed fluid at the second portion.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 16, 2022
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Atsushi MORIKAWA, Masakazu SHIMADA, Takeshi KASAI, Kenichi SUZAKI, Hirohisa YAMAZAKI, Yoshimasa NAGATOMI
  • Patent number: 11332016
    Abstract: Proposed is technology that enables the linked use of a camera and sensor system in a train image monitoring system. A train image monitoring system is characterized by, in a train monitoring system (100), the following: a control device (271) comprising a means for managing the device configuration of the system, a means for receiving data from each device, a means for determining the control contents of each device, and a means for transmitting a control instruction to each device; a recording device comprising a means for receiving data from each device, a means for recording received data, a means for reading out recorded data, a means for transmitting read-out data, and a means for receiving a control instruction; and a display device comprising a means for receiving data from the recording device, a means for displaying received data on a screen, a means for detecting a user operation, a means for transmitting the contents of a user operation, and a means for receiving a control instruction.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: May 17, 2022
    Assignee: Hitachi Kokusai Electric Inc.
    Inventor: Seiichi Hirai
  • Patent number: 11310446
    Abstract: An imaging device includes an optical system, a plurality of imaging elements, an imaging unit, a comparison unit, and a correction unit. The optical system is configured to disperse light of a subject image. The imaging elements are configured to capture subject images dispersed by the optical system using a rolling shutter method. The imaging unit is configured to shift a slit range, which is between a front curtain and a rear curtain of the rolling shutter method, by at least one line in a sub-scanning direction between the plurality of imaging elements. The comparison unit is configured to calculate a level difference in units of lines between image signals output by the plurality of imaging elements by comparing signal levels of the image signals, and the correction unit configured to correct influence of a flash band on the image signals on the basis of the level difference.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: April 19, 2022
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Takuhiro Shibuya
  • Publication number: 20220089205
    Abstract: There is provided a train monitoring system using a train monitoring device that is mounted on a train and uses a plurality of cameras for imaging around the train from different sides. The train monitoring device includes a control unit that is configured to, when the train stops at a station, select one of the plurality of cameras as a rear imaging camera for imaging a rear side in a traveling direction of the train, after the train departs from the station, acquire image data imaged by the rear imaging camera, and transmit the image data to the outside.
    Type: Application
    Filed: December 10, 2019
    Publication date: March 24, 2022
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Yohei YAMAMOTO
  • Patent number: 11275947
    Abstract: The present invention provides a technique suitable for the detection of small objects such as white canes. In order to solve this problem, one representative example of this image processing system comprises a video acquisition unit configured to input an input image acquired as a video, an estimation unit including a Fully Convolutional Network (FCN) learning model trained with respect to a region of a predetermined detection target, and configured to generate a region estimation image for the detection target by processing the input image with the learning model, and an image processing unit configured to detect the region of the detection target based on the region estimation image.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: March 15, 2022
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Hiroto Sasao
  • Patent number: 11271784
    Abstract: A wireless communication device includes frequency hopping means for changing a radio frequency based on a temporarily defined pattern, and a frequency offset compensation unit. The frequency offset compensation unit includes a frequency offset calculator that calculates a frequency offset amount from a received signal, a hopping frequency value converter that uses the frequency offset amount, a radio frequency from which the frequency offset amount is calculated, and a transition destination radio frequency transitioned by the frequency hopping means to calculate an estimated frequency offset value for the transition destination radio frequency, and a rotator that uses the estimated frequency offset value for the transition destination radio frequency to perform phase rotation on the received signal.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: March 8, 2022
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Kei Ito
  • Publication number: 20220045417
    Abstract: A low-cost, small-size Wilkinson-type combiner that suppresses the risk of damaging an isolation resistor due to combination loss is provided. The combiner comprises first and second input terminals to which RF signals are input; an output terminal; a wiring line that combines the RF signals input to the first and second input terminals, and outputs the combined signal to the output terminal; an isolation unit provided between the first and second input terminals and formed by a first isolation resistor, a transformer, and a second isolation resistor connected in series; a detection circuit connected to a secondary coil of the transformer and configured to detect a current flowing in the secondary coil; and a determination circuit that outputs a control signal to block input of RF signals to the first and second input terminals if the current flowing in the isolation unit and detected by the detection circuit is higher than or equal to a prescribed value.
    Type: Application
    Filed: February 6, 2020
    Publication date: February 10, 2022
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sunao EGASHIRA, Kenji NASU, Yuichiro SUENAGA, Naoya FUJIMOTO
  • Patent number: 11233945
    Abstract: An object of the present invention is to provide an imaging apparatus that can comfortably be focused while an influence on a wide angle image is minimized. The imaging apparatus includes: a display unit for displaying an image being photographed; an enlarged image display function for displaying an image obtained by enlarging a part of an area being photographed in the display unit; an edge component detection function for detecting an edge component amount of an enlarged image area; and a focal point position detection function for detecting movement of a focal point operated by a photographer. Duration time of the enlarged image display displayed by the enlarged image display function is changed in conjunction with the edge component detected by the edge component detection function and the movement of the focal point detected by the focal point position detection function.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: January 25, 2022
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Takuhiro Shibuya, Shiro Ikeda
  • Patent number: 11184530
    Abstract: A drive substrate for a camera and a broadcast camera which are free from the occurrence of bit errors in video over a low to high temperature range while achieving reduction in a production cost and development time are provided. The phase of a clock is appropriately adjusted by repeating the processes of shifting the clock phase in a first period within a blanking period during which effective pixel data of each frame in a video signal is not used, detecting the occurrence/non-occurrence of a bit error based on the phase-shifted clock in a second period within the blanking period, and further shifting the clock phase in a third period within the blanking period.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: November 23, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Yosuke Nakayama
  • Patent number: 11172051
    Abstract: A communication device used in a wireless system that includes plural communication devices and executes communication via at least one of the plural communication devices. The communication device includes: first means for judging whether communication control information can be compressed or not on the basis of a neighboring node search message among the plural communication devices and a response thereto, or the exchange of routing control information according to an ad hoc routing protocol; and second means for compressing the information volume of the communication control information by judging the contents of the communication control information and deleting or replacing redundant information or constantly fixed information if the communication control information can be compressed.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: November 9, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tomoya Shoji, Michitomo Suzuki, Nobuyuki Uchikawa
  • Patent number: 11170221
    Abstract: Provided is a technology which facilitates a search for an object such as a falling object. This object search system is provided with: a detection device which detects position information on a falling object; and a scope which is worn by a user and provided with a display unit that displays an augmented reality space in a real space. The detection device detects an object by using a radar device. A radar control device calculates the detected position information on the object and transmits the calculated position information to the scope through a wireless transmission device. The scope displays the position information, which pertains to the falling object and is acquired from the detection device, on an augmented reality space with a specific indication (an arrow or a wave shape, etc.).
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: November 9, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yosuke Sato, Kenichi Kashima
  • Patent number: 11172103
    Abstract: Provided is a heat-resistant imaging camera configured to move in a high temperature furnace and configured to capture high-definition images of the outer side or the inner side of a painted object passing in a high temperature drying furnace. Heat insulators (13a to 13f) are attached to all inner surfaces of an outer case (10) of a heat-resistant imaging camera (1) except a double glass window (21), and cold storage material packs (15a to 15e) are disposed inward of the heat insulators (13a to 13f) in layers so as to cover around a camera (2). Intrusive heat is absorbed by melting latent heat when the cold storage material packs (15a to 15e) are melted and changed in phase from a solid to a liquid at a specific temperature or higher, thereby ensuring heat resistance that maintains the camera (2) at a safely operatable temperature.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: November 9, 2021
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Keigo Nakamura, Takahiro Daikoku, Takeshi Kashiyama, Yoshiyuki Murano
  • Patent number: 11160044
    Abstract: A synchronization signal conversion device comprises a first communication device and a second communication device. The first communication device acquires, from the received GPS signals, time synchronization information synchronized to a GPS reference time, and wirelessly transmits the time synchronization information at a frequency different from that of the GPS signals. The second communication device receives the radio signals from the first communication device and acquires the time synchronization information, synchronizes internal time information to the GPS reference signal on the basis of the time synchronization information, and generates pseudo-GPS reception signals including satellite information and outputs the signal to a reception-side base station device such that the synchronized internal time information and pre-stored position information are acquired at the base station device.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: October 26, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoichi Kushioka, Koji Yotsumoto
  • Patent number: 11159184
    Abstract: Domain management functionality is implemented internally to a software-defined radio device. A software-defined radio device that includes plural hardware modules 220 to 222 and implements radio device functions by downloading radio communication software programs 203 for controlling the plural hardware modules from outside. The software-defined radio device includes domain management software 202 among environment software programs 215 that are activated when the device is activated. The domain management software generates an interface necessary to use each of the radio communication software programs according to a domain for each of the radio communication software programs and performs activation, setup, and connection with other programs for each of the radio communication software programs.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: October 26, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Tomoya Shoji
  • Patent number: 11134459
    Abstract: In a base station, a signal synchronization unit detects a received timing of a signal from a mobile station. A correlation position protection unit corrects the received timing on the basis of time from a transmitting timing at which a signal transmitting operation to the mobile station is started to the received timing. A transmitting timing generation unit generates, on the basis of the received timing after the correction, a transmitting timing at which a subsequent signal transmitting operation to the mobile station is started. Further, an FB frame generation unit generates frame period information that indicates a correction value by the correlation position protection unit, and a transmitting processing unit transmits, to the mobile station, a signal including the frame cycle information in response to the generation of the transmitting timing.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 28, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Daiki Hoshi, Hiroki Kato, Tatsuhiro Nakada