Patents Assigned to Hitachi Kokusai Electric Inc.
  • 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: 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: 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: 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: 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: 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
  • Patent number: 11128024
    Abstract: A combiner-divider includes a first impedance converter disposed between the first port and the second port, a second impedance converter disposed between the first port and the third port, and an isolation unit disposed between the second port and the third port. The isolation unit includes a balun formed of a first semi-rigid cable and a second semi-rigid cable, and terminating resistors. Each line length of the first impedance converter, the second impedance converter, and the third impedance converter corresponds to ¼ wavelength at a center frequency. A relationship of each impedance Ri of the second port and the third port, an impedance Ro of the first port, and each impedance W of the first impedance converter and the second impedance converters is expressed by W=(2×Ri×Ro)1/2.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: September 21, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yusaburo Goto, Keiichi Sakamaki, Yu Wakabayashi
  • Patent number: 11129045
    Abstract: In a communication device and a communication method, multiple pieces of QoS control information are stored in a routing information base, each piece of QoS control information, with a terminal wired to the communication device itself as a transmission source, defining a bandwidth control value and a priority degree that correspond to communication data specified by a combination of the transmission source and a destination. When communication data is inputted, a control unit selects QoS control information that matches a combination of the transmission source and the destination of the inputted communication data from among the stored multiple pieces of QoS control information and indicates a bandwidth to a bandwidth control unit on the basis of the selected QoS control information, indicates a priority degree to a DSCP marking unit, and performs wireless transmission.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: September 21, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tomoya Shoji, Hiroshi Nakano, Nobuyuki Uchikawa
  • Patent number: 11108994
    Abstract: A monitoring server of a platform-side monitoring system analyzes an image taken by a plurality of platform monitoring cameras installed on a platform, and transmits information on the results of detection to a car-side monitoring system in the case where an object of attention is detected from the image. A control unit of the car-side monitoring system allows the monitor to display an image taken by the car camera which corresponds to the platform monitoring camera that has taken an image of the object of attention in a mode that is different from that of the images taken by the other car cameras on the basis of the information on the results of detection that has been received from the platform-side monitoring system.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 31, 2021
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Ryuichi Saito, Yohei Yamamoto
  • Patent number: 11082102
    Abstract: A beam forming antenna in which directivity directions of beams can be controlled at higher resolution of control is provided. The beam forming antenna includes a matrix circuit having multiple final output terminals and multiple antenna elements connected to the multiple final output terminals respectively. The matrix circuit includes a first sub-matrix, a second sub-matric, and adders which combine outputs of the first sub-matrix and outputs of the second sub-matrix. By selecting any input terminal out of the multiple input terminals of the first sub-matrix or the multiple input terminals of the second sub-matrix and inputting a signal, a signal having a predetermined phase difference between output terminals is output at the multiple final output terminals and the phase difference between output terminals has a differing value according to a selected input terminal.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: August 3, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Toshiyuki Nagasaku
  • Patent number: 11041240
    Abstract: There is provided a technique that includes: a process chamber in which a process of forming a film containing a main element on a substrate is performed; a first nozzle configured to supply a precursor containing the main element to the substrate in the process chart; a second nozzle separated from the first nozzle and configured to supply the precursor to the substrate in the process chamber; a third nozzle configured to supply a reactant to the substrate in the process chamber; and a plurality of first exhaust ports configured to exhaust an internal atmosphere of the process chamber, wherein each of the plurality of first exhaust ports is disposed at a position which does not face a first gas ejection hole of the first nozzle and a second gas ejection hole of the second nozzle, in a plan view.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 22, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC, INC.
    Inventors: Kosuke Takagi, Risa Yamakoshi, Hideki Horita, Atsushi Hirano
  • Publication number: 20210158137
    Abstract: Even if an existing learning dataset is limited, a new learning dataset with sufficient variation is generated. Therefore, for each of a plurality of learning data subsets, new input signals are generated from input signals of a plurality of pieces of learning data, and a plurality of pieces of new learning data that are respectively combinations of the new input signals and output signals of the corresponding learning data subset are generated. The input signals of the plurality of pieces of the learning data included in the corresponding learning data subset are divided into a first signal group and a second signal group, and the new input signals are generated by a learning device that is generated by performing learning by the first signal group set as an input signal set and the second signal group set as an output signal set.
    Type: Application
    Filed: May 30, 2017
    Publication date: May 27, 2021
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: HIROTO SASAO
  • Patent number: 11017537
    Abstract: An abandoned item detection unit detects an abandoned item shown in an image taken by any of a plurality of imaging devices. A person identification unit specifies the image directly before or directly after the appearance of the abandoned item as an image of abandonment timing, and identifies at least one person shown in the image of abandonment timing as a target person. A person search unit searches for an image showing the target person from among the images respectively taken by any of the plurality of imaging devices. A result display unit outputs a display showing the movement of the target person on the screen of a user terminal on the basis of the imaging device that has taken each image showing the target person and the imaging time at which each image showing the target person was taken.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 25, 2021
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Junichi Togashi, Wataru Ito
  • Patent number: 11006061
    Abstract: In an image correction method and an image capture device, a one-frame addition average calculation unit calculates a one-frame addition average value. If the one-frame addition average value falls within an appropriate range, a determination circuit inputs image data for one frame to an adder and the adder adds the image data to a cumulative correction value to update the correction value. The updated correction value is stored in a frame memory. If the one-frame addition average value is outside the appropriate range, the image data for one frame is discarded. After updating the cumulative correction value until the number of updates reaches a prescribed number, an FPN correction value is calculated by dividing the cumulative correction value stored in the frame memory by the prescribed number, and an image is corrected by subtracting the FPN correction value from the image data inputted at the time of imaging.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: May 11, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tadaaki Yanagi, Kazuhiko Nakamura, Kentaro Suguro, Kazuyoshi Sato
  • Publication number: 20210135357
    Abstract: An antenna control device includes a weight unit in which weight values to be superimposed on transmission/reception signals are set for forming radiation patterns using a plurality of antennas and a weight synthesis unit that superposes the weight values on the transmission/reception signals. The antenna control device further includes an arrival direction detector that detects arrival directions of the reception signals, a distribution information calculator that calculates distribution information of the detected arrival directions, a signal quality calculator that calculates signal quality information of each of the radiation patterns, and a radiation pattern selector that selects a radiation pattern on the basis of the distribution information and signal quality information for the radiation patterns, and sets the weight values corresponding to the selected radiation pattern in the weight unit.
    Type: Application
    Filed: March 20, 2018
    Publication date: May 6, 2021
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Satoru YASUI, Takahito ISHII, Keiju ITO, Teppei SHOJI, Koji YOTSUMOTO
  • Publication number: 20210124934
    Abstract: Provided is a technology for monitoring vehicle doors of a train that achieves monitoring with substantially no downtime when any one of multiple monitoring cameras breaks down. A first to a fourth monitoring camera attached outside of a vehicle to monitor a first to a fourth door of the vehicle. A first monitoring camera and a second monitoring camera are paired with each other, and a third monitoring camera and a fourth monitoring camera are paired with each other. If the first monitoring camera breaks down, the second monitoring camera captures areas of both the first door and the second door, and trims and extracts each of the areas.
    Type: Application
    Filed: March 7, 2018
    Publication date: April 29, 2021
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: KANA OHKI
  • Publication number: 20210075938
    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: Application
    Filed: August 27, 2020
    Publication date: March 11, 2021
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Keigo NAKAMURA, Takahiro DAIKOKU, Takeshi KASHIYAMA, Yoshiyuki MURANO
  • Patent number: 10939253
    Abstract: A plurality of terminal stations that share the same access point are controlled to have communication opportunities on the basis of terminal station groups (e.g., operators). A radio communication system, in which the plurality of terminal stations 102 to 106 is connected to a network via an access point 101, includes an access manager 107 connected to the access point. The access manager includes a user/group manager that manages the plurality of terminal stations in groups, and a radio resource manager that determines the necessity of bandwidth limit on the basis of the communication status of each of the groups and transmit from the access point a control message that allows communication of a particular group among the groups and stops communication of other groups when it is determined that the bandwidth limit is necessary.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: March 2, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Keigo Hasegawa
  • Patent number: 10912149
    Abstract: A communication device that is used for ad-hoc network communication or wireless mesh network communication includes a setting interface unit configured to set an IP address of a communication device corresponding to low-delay communication, and an ad-hoc routing control unit. When a request for low-delay communication is provided from the setting interface unit, the ad-hoc routing control unit determines a route matching the IP address of the communication device and determines whether the low-delay communication is possible. The ad-hoc routing control unit sets a control message transmission interval to the maximum interval when the low-delay communication is possible, and sets the control message transmission interval to the minimum interval when the low-delay communication is not possible.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: February 2, 2021
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tomoya Shoji, Tomoya Miura, Nobuyuki Uchikawa