Patents by Inventor Atsushi Takami

Atsushi Takami 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).

  • Patent number: 11040732
    Abstract: A wireless train control system includes: a device that generates a track circuit state signal indicating whether a track circuit is picked up or dropped and a time-triggered track circuit state signal indicating a drop at a timing delayed by a set time after the track circuit state signal indicates that the track circuit is dropped; and a controller that generates a stop limit point of a wireless-control-compliant train by using presence information if a preceding train is a wireless-control-compliant train, and generates the stop limit point by using the track circuit state signal and the time-triggered track circuit state signal if the preceding train is a non-wireless-control-compliant train. The controller does not update the stop limit point if the track circuit state signal indicates that the track circuit is dropped while the time-triggered track circuit state signal indicates that the track circuit is picked up.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: June 22, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi Asuka, Atsushi Takami
  • Patent number: 11001282
    Abstract: A rail state monitoring apparatus (1) includes: first and second transmission antennas (101, 102) to transmit first and second electric signals to rails (5, 6), respectively; first reception antenna (201) to receive a surface wave (21) of the first electric signal propagated through rail (5) and guided wave (32) of the second electric signal propagated through loop coil (10); second reception antenna (202) to receive surface wave (22) of the second electric signal propagated through rail (6) and guided wave (31) of the first electric signal propagated through loop coil (10); and a processor. The processor obtains received powers of the respective electric signals received by first and second reception antennas (201, 202), determines a rail state from “good”, “rail broken”, “rail crack”, or “rail surface anomaly” based on the received powers, and outputs the rail state as rail state information.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: May 11, 2021
    Assignees: MITSUBISHI ELECTRIC CORPORATION, MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC.
    Inventors: Wataru Tsujita, Kenzo Makino, Atsushi Takami, Bingnan Wang
  • Publication number: 20200130717
    Abstract: A rail state monitoring apparatus (1) includes: first and second transmission antennas (101, 102) to transmit first and second electric signals to rails (5, 6), respectively; first reception antenna (201) to receive a surface wave (21) of the first electric signal propagated through rail (5) and guided wave (32) of the second electric signal propagated through loop coil (10); second reception antenna (202) to receive surface wave (22) of the second electric signal propagated through rail (6) and guided wave (31) of the first electric signal propagated through loop coil (10); and a processor. The processor obtains received powers of the respective electric signals received by first and second reception antennas (201, 202), determines a rail state from “good”, “rail broken”, “rail crack”, or “rail surface anomaly” based on the received powers, and outputs the rail state as rail state information.
    Type: Application
    Filed: October 24, 2018
    Publication date: April 30, 2020
    Applicants: MITSUBISHI ELECTRIC CORPORATION, MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC.
    Inventors: Wataru TSUJITA, Kenzo MAKINO, Atsushi TAKAMI, Bingnan WANG
  • Patent number: 10613953
    Abstract: A start test method executed by a system including a calculation device and a management device that manages failure information on the calculation device, the start test method includes storing, by a first processor included in the management device, a failure rate that has been calculated for each of parts of the calculation device based on the failure information received from the calculation device as performance information, associating with time information and a part of the calculation device; obtaining a failure rate of each of the parts at a time of start of the calculation device based on the performance information and a time when the calculation device is to be started; notifying the calculation device of the obtained failure rate; and executing, by a second processor included in the calculation device, a start test of the calculation device in accordance with the notified failure rate.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 7, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Taku Komorida, Atsushi Takami, Masato Fukumori, Haruhiko Ueno, Tsuyoshi Hashimoto
  • Publication number: 20190351919
    Abstract: A course control device includes: an information acquisition unit to acquire information via any of wireless devices arranged along a track from a first station to a second station; and a course control unit to control the course of a course control target train based on the information acquired by the information acquisition unit. The course control unit prevents the course control target train from proceeding to the course in at least one of a case where at least one of the wireless devices is in a failure state, a case where an on-board device that is mounted in a preceding train preceding the course control target train on the track and controls the preceding train based on information acquired via the wireless devices is in a failure state, and a case where the preceding train is in a stationary state between the first station and the second station.
    Type: Application
    Filed: January 17, 2017
    Publication date: November 21, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashi HAGIWARA, Atsushi TAKAMI
  • Publication number: 20190323128
    Abstract: Provided are a novel chemical conversion treatment agent which is capable of forming, on/over the surface of a metal material, a chemical conversion coating which is superior in corrosion resistance, a method for producing a chemical conversion coating on/over the surface of a metal material with the use of the chemical conversion treatment agent, a metal material having a coating, and a painted metal material. The problem mentioned above can be solved by the chemical conversion treatment agent for forming a coating on/over the surface of a metal material, which characterized by containing: an ion containging at least one metal selected from the group consisting of titanium, zirconium and hafnium; a fluorine ion; at least one selected from the group consisting of an alkanesulfonic acid, an alkanolsulfonic acid, and ions thereof; and an ion containing trivalent iron.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 24, 2019
    Applicant: NIHON PARKERIZING CO., LTD.
    Inventors: Atsushi Takami, Hidekazu Fukushi
  • Publication number: 20190291758
    Abstract: A radio train control system controls the trains on tracks on which track circuits are built, and includes: ground radio devices performing radio communication with the trains and acquiring position information of the trains; field devices acquiring track circuit state information indicating whether the track circuit is ON or OFF; ground base devices receiving the position information and the track circuit state information and transmitting control information to the trains; and an on-track vehicle control device receiving the position information and the track circuit state information and managing on-track information. The ground radio devices and the field devices have transmission paths connected with the on-track vehicle control device without the ground base devices, and the on-track vehicle control device can transmit the control information to the trains through the transmission paths when the ground base device is out of order.
    Type: Application
    Filed: August 4, 2016
    Publication date: September 26, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Katsunori TSUCHIDA, Atsushi TAKAMI, Tomohiro ONISHI
  • Patent number: 10392039
    Abstract: To provide a wireless train control system that can perform a stable operation. The wireless train control system controls a wireless-control compliant train following a wireless-control noncompliant train by a ground control device. A stop limit point of the wireless-control compliant train is set by a track circuit in which a tail end position of the wireless-control noncompliant train is present. By using a track-circuit state signal indicating that the track circuit is turned on or turned off and a time-element-added track-circuit state signal indicating turn-off at a timing delayed by a set time after the track-circuit state signal has indicated turn-off, when the track-circuit state signal indicates turn-off and the time-element-added track-circuit state signal indicates turn-on, it is determined that turn-off indicated by the track-circuit state signal is caused by the wireless-control compliant train that is a train itself being present, and the stop limit point is not updated.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi Asuka, Atsushi Takami
  • Publication number: 20190047599
    Abstract: A wireless train control system includes: a device that generates a track circuit state signal indicating whether a track circuit is picked up or dropped and a time-triggered track circuit state signal indicating a drop at a timing delayed by a set time after the track circuit state signal indicates that the track circuit is dropped; and a controller that generates a stop limit point of a wireless-control-compliant train by using presence information if a preceding train is a wireless-control-compliant train, and generates the stop limit point by using the track circuit state signal and the time-triggered track circuit state signal if the preceding train is a non-wireless-control-compliant train. The controller does not update the stop limit point if the track circuit state signal indicates that the track circuit is dropped while the time-triggered track circuit state signal indicates that the track circuit is picked up.
    Type: Application
    Filed: March 9, 2016
    Publication date: February 14, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi ASUKA, Atsushi TAKAMI
  • Publication number: 20180304909
    Abstract: To provide a wireless train control system that can perform a stable operation. The wireless train control system controls a wireless-control compliant train following a wireless-control noncompliant train by a ground control device. A stop limit point of the wireless-control compliant train is set by a track circuit in which a tail end position of the wireless-control noncompliant train is present. By using a track-circuit state signal indicating that the track circuit is turned on or turned off and a time-element-added track-circuit state signal indicating turn-off at a timing delayed by a set time after the track-circuit state signal has indicated turn-off, when the track-circuit state signal indicates turn-off and the time-element-added track-circuit state signal indicates turn-on, it is determined that turn-off indicated by the track-circuit state signal is caused by the wireless-control compliant train that is a train itself being present, and the stop limit point is not updated.
    Type: Application
    Filed: October 15, 2015
    Publication date: October 25, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi ASUKA, Atsushi TAKAMI
  • Publication number: 20180157566
    Abstract: A start test method executed by a system including a calculation device and a management device that manages failure information on the calculation device, the start test method includes storing, by a first processor included in the management device, a failure rate that has been calculated for each of parts of the calculation device based on the failure information received from the calculation device as performance information, associating with time information and a part of the calculation device; obtaining a failure rate of each of the parts at a time of start of the calculation device based on the performance information and a time when the calculation device is to be started; notifying the calculation device of the obtained failure rate; and executing, by a second processor included in the calculation device, a start test of the calculation device in accordance with the notified failure rate.
    Type: Application
    Filed: November 7, 2017
    Publication date: June 7, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Taku Komorida, Atsushi Takami, Masato Fukumori, Haruhiko Ueno, Tsuyoshi Hashimoto
  • Patent number: 9753829
    Abstract: A power measurement apparatus of a computer including logical units each including a CPU chip having CPU cores and a peripheral apparatus, a dedicated power supply apparatus for the respective CPU cores, and a common power supply apparatus for the peripheral apparatuses including: an output power generating unit that acquires output voltage and current of the dedicated power supply apparatus and generates output power thereof, a temperature acquiring unit that acquires a temperature of the CPU chip, an operation rate generating unit that generates an operation rate of the CPU core, a power consumption estimating unit which estimates power consumption of the peripheral apparatuses of the first and second logical units, and a power consumption generating unit that generates respective power consumption of the first and second logical units by summing up the output power of the dedicated power supply apparatus and the estimated power consumption of the peripheral apparatuses.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: September 5, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Mari Masuda, Haruhiko Ueno, Atsushi Takami
  • Patent number: 9733948
    Abstract: An information processing device, includes: a storage to store a program to be booted; a central processing unit to start a plurality of booting programs and read the program stored in the storage using a virtual address; a main memory to store the program based on a read instruction of the program; and a controller, including an address translator that translates a virtual address into a physical address, to read the program from the storage according to the read instruction, and write the read program in a plurality of discontinuous areas of the main memory on the physical address, wherein the central processing unit executes a start module which sets a virtual address space in the central processing unit and the controller before the plurality of booting programs are booted, and reads the written program from the main memory using the virtual address which is designated by the reading instruction.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: August 15, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Atsushi Takami, Koji Fujita, Haruhiko Ueno
  • Patent number: 9642163
    Abstract: A train control device includes an on-vehicle base station mounted on a train, base stations that can communicate with the on-vehicle base station, an on-vehicle control device controlling an operation such that the train can stop before reaching a stop limit before which the train can run safely, and ground control devices that transmit, to the train side, the stop limit calculated based on information on the current position acquired from the train side via the base stations and opening information on a turnout on the ground. The on-vehicle control device calculates a channel-reservation start pattern, which is a pattern determining a reservation start position of a communication channel of a base station as a switching target when the base station as a communication partner to the on-vehicle base station is switched and in which the reservation start position is different according to train speed and train position.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: May 2, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusaku Nagasaki, Masashi Asuka, Atsushi Takami
  • Publication number: 20160109918
    Abstract: A power measurement apparatus of a computer including logical units each including a CPU chip having CPU cores and a peripheral apparatus, a dedicated power supply apparatus for the respective CPU cores, and a common power supply apparatus for the peripheral apparatuses including: an output power generating unit that acquires output voltage and current of the dedicated power supply apparatus and generates output power thereof, a temperature acquiring unit that acquires a temperature of the CPU chip, an operation rate generating unit that generates an operation rate of the CPU core, a power consumption estimating unit which estimates power consumption of the peripheral apparatuses of the first and second logical units, and a power consumption generating unit that generates respective power consumption of the first and second logical units by summing up the output power of the dedicated power supply apparatus and the estimated power consumption of the peripheral apparatuses.
    Type: Application
    Filed: September 28, 2015
    Publication date: April 21, 2016
    Inventors: Mari MASUDA, Haruhiko Ueno, Atsushi TAKAMI
  • Publication number: 20150134945
    Abstract: An information processing device, includes: a storage to store a program to be booted; a central processing unit to start a plurality of booting programs and read the program stored in the storage using a virtual address; a main memory to store the program based on a read instruction of the program; and a controller, including an address translator that translates a virtual address into a physical address, to read the program from the storage according to the read instruction, and write the read program in a plurality of discontinuous areas of the main memory on the physical address, wherein the central processing unit executes a start module which sets a virtual address space in the central processing unit and the controller before the plurality of booting programs are booted, and reads the written program from the main memory using the virtual address which is designated by the reading instruction.
    Type: Application
    Filed: September 11, 2014
    Publication date: May 14, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Atsushi Takami, Koji Fujita, Haruhiko Ueno
  • Publication number: 20150078276
    Abstract: A train control device includes an on-vehicle base station mounted on a train, base stations that can communicate with the on-vehicle base station, an on-vehicle control device controlling an operation such that the train can stop before reaching a stop limit before which the train can run safely, and ground control devices that transmit, to the train side, the stop limit calculated based on information on the current position acquired from the train side via the base stations and opening information on a turnout on the ground. The on-vehicle control device calculates a channel-reservation start pattern, which is a pattern determining a reservation start position of a communication channel of a base station as a switching target when the base station as a communication partner to the on-vehicle base station is switched and in which the reservation start position is different according to train speed and train position.
    Type: Application
    Filed: June 11, 2013
    Publication date: March 19, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusaku Nagasaki, Masashi Asuka, Atsushi Takami
  • Patent number: 8967553
    Abstract: In accordance with a predetermined segment definition rule based on a point-switch protection section, a point switch control direction, and a train advancing direction, a plurality of segments are defined in advance with respect to a railway network. Segment competition information in which a competitive relationship between the plurality of segments is set in advance is prepared. A segment use permission setting part determines whether or not a competition for a use-requested segment in terms of a train operation occurs between the plurality of trains, by using segment competition information and segment use permission status information. A use-requested segment for which it is determined that no competition occurs is incorporated, as a use permission segment, into use permission segment information of the corresponding train. In accordance with a result of the competition determination, the segment use permission status information is updated.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: March 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masashi Asuka, Satoru Takahashi, Koki Yoshimoto, Atsushi Takami, Yusaku Nagasaki
  • Publication number: 20140103166
    Abstract: In accordance with a predetermined segment definition rule based on a point-switch protection section, a point switch control direction, and a train advancing direction, a plurality of segments are defined in advance with respect to a railway network. Segment competition information in which a competitive relationship between the plurality of segments is set in advance is prepared. A segment use permission setting part determines whether or not a competition for a use-requested segment in terms of a train operation occurs between the plurality of trains, by using segment competition information and segment use permission status information. A use-requested segment for which it is determined that no competition occurs is incorporated, as a use permission segment, into use permission segment information of the corresponding train. In accordance with a result of the competition determination, the segment use permission status information is updated.
    Type: Application
    Filed: November 15, 2011
    Publication date: April 17, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashi Asuka, Satoru Takahashi, Koki Yoshimoto, Atsushi Takami, Yusaku Nagasaki
  • Patent number: 6796729
    Abstract: A shutter for a camera capable of opening a shutter sector in a reduced period of time includes a shutter opening formed in a shutter plate, shutter sectors for opening and closing the shutter opening, a drive lever having a drive pin for operating the shutter sectors, and an actuator for driving the drive lever. The drive pin penetrates through-holes formed in the shutter sectors. The through-holes have a size sufficiently large so that the drive lever is driven by the actuator substantially in a no-load state immediately after starting to drive the drive lever so that the shutter sectors are not moved until the drive pin has achieved sufficient acceleration.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: September 28, 2004
    Assignee: Seiko Precision Inc.
    Inventors: Hiroyuki Mizukami, Seiichi Imano, Atsushi Takami, Seiichi Oishi