Patents by Inventor Yasuhiro Tajima

Yasuhiro Tajima 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: 20200290583
    Abstract: In a hydraulic brake system, when a main power supply is in an abnormal condition in which it cannot supply electric power to a pump motor, etc., the pump motor is operated with electric power supplied from an auxiliary power supply, irrespective of the presence of a braking request. Thus, when the main power supply is in the abnormal condition, the number of times inrush current flows is reduced. As a result, the voltage of the auxiliary power supply is less likely to be lower than an operation minimum voltage, and the hydraulic brake system is less likely to be unable to be operated.
    Type: Application
    Filed: February 7, 2020
    Publication date: September 17, 2020
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Narematsu, Osamu Kawarada, Yu Asai, Yasuhiro Tajima
  • Publication number: 20200189943
    Abstract: A ballast water treatment method includes: a step of supplying a sterilizing component to a ballast pipe while taking ballast water into a ballast tank through the ballast pipe; a first measurement step of measuring the concentration of the sterilizing component in the ballast water after the sterilizing component is supplied; a circulation step of returning the ballast water stored in the ballast tank to the ballast pipe through a circulation pipe; a second measurement step of measuring the concentration of the sterilizing component contained in the ballast water returned to the ballast pipe; and a step of supplying the sterilizing component to the ballast pipe 2 when the concentration of the sterilizing component measured in the second measurement step is less than 0.2 times the concentration of the sterilizing component measured in the first measurement step.
    Type: Application
    Filed: August 27, 2018
    Publication date: June 18, 2020
    Applicant: Kuraray Co., Ltd.
    Inventor: Yasuhiro TAJIMA
  • Patent number: 10611360
    Abstract: An electric power source system includes an electric power generator, a voltage conversion device, a battery, an electrical load, and a control device. The voltage conversion device converts a direct current voltage. The battery is electrically connected to the electric power generator through the voltage conversion device. The electrical load is electrically connected to the electric power generator in a parallel relationship with the battery without passing through the voltage conversion device. The control device is configured to charge the battery through the voltage conversion device based on regenerative electric power in a regenerative state in which the regenerative electric power is generated by the electric power generator. the control device is configured to increase an electric power consumption of the electrical load further when the control device detects an event that impedes the charging in the regenerative state than when the control device does not detect the event.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 7, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Tajima, Mitsuhiro Miura
  • Patent number: 10500527
    Abstract: A ballast water production method is provided. The method includes a filtering step that passes raw water supplied into a housing through a filter from a primary side that is upstream of the filter to a secondary side that is downstream of the filter; a volume-increasing step after the filtering step that increases a volume of water present in a space on the secondary side of the housing while the supply of the raw water into the housing is stopped; a pressurizing step after the volume-increasing step that pressurizes an inside of the housing from the secondary side while the supply of the raw water into the housing is stopped; and a rinsing step after the pressurizing step that passes a fluid through the filter from the secondary side to the primary side while the supply of the raw water into the housing is stopped.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: December 10, 2019
    Assignee: KURARAY CO., LTD.
    Inventors: Mitsuaki Yamamoto, Kazuaki Hagiwara, Yasuhiro Tajima
  • Publication number: 20190351884
    Abstract: An electric-brake controller controls an electric brake operable by an electric motor. The electric-brake controller includes: a rotation-angle obtainer including (i) a relative-rotation-angle obtaining unit that obtains a relative rotation angle of the electric motor for a set time, based on values output and received from a rotation-angle sensor at intervals of the set time, and (ii) an absolute-rotation-angle obtaining unit that calculates the obtained relative rotation angle with consideration of an orientation of the relative rotation angle to obtain an absolute rotation angle that is a rotation angle of the electric motor from a start of its operation; a recognition-error detector that detects a recognition error in the rotation-angle obtainer based on the obtained absolute rotation angle or a changing state of the absolute rotation angle; and a motor controller that controls the electric motor based on a result of detection performed by the recognition-error detector.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 21, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro TAJIMA, Hiroki MIMA, Akihiro TAKAHASHI
  • Patent number: 10155510
    Abstract: When it is judged that a downward slope segment exists in a scheduled traveling route, the control device of a hybrid vehicle sets a target remaining capacity SOC* in a pre-use segment in a downward slope segment and the downward slope segment to a “low-side remaining capacity Sd which is ?Sd smaller than a standard remaining capacity Sn.” Furthermore, when it is presumed that a rise amount of a remaining capacity by an extended regeneration control is large in the pre-use segment and the downward slope segment, the target remaining capacity SOC* is set to a “low-side remaining capacity Sd which is a sum of ?Sd and ?S1 smaller than the standard remaining capacity Sn.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 18, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyomi Nagamiya, Yasuhiro Tajima, Haruki Oguri, Masafumi Uchihara, Shigeki Matsumoto
  • Publication number: 20180346088
    Abstract: A ballast water treatment apparatus 1 comprises a ballast pipe 11 which guides ballast water to a ballast tank 60 and a sterilizing agent supply unit 30 which supplies a constant amount of a sterilizing agent per unit time to the ballast pipe 11 in accordance with a flow rate of ballast water flowing in the ballast pipe 11. A ballast water treatment method using the ballast water treatment apparatus 1 comprises steps of supplying ballast water to a ballast tank 60 via a ballast pipe 11 and supplying a constant amount of a sterilizing agent 33 per unit time to the ballast pipe 11 in accordance with a flow rate of the ballast water flowing in the ballast pipe 11.
    Type: Application
    Filed: October 24, 2016
    Publication date: December 6, 2018
    Applicant: Kuraray Co., Ltd.
    Inventor: Yasuhiro TAJIMA
  • Patent number: 10124676
    Abstract: When a vehicle is in an accelerator off state and satisfies a free-run condition, a regeneration control unit performs free-run control on the vehicle so that the amount of regenerative electric power is decreased. The regeneration control unit sets a free-run prohibited zone between a starting point of a regeneration enhancement zone and a position that is located in front of and separated by a determination distance from the starting point.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: November 13, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Tajima, Kunihiko Jinno, Haruki Oguri, Yoshikazu Motozono, Kiyomi Nagamiya
  • Publication number: 20180312237
    Abstract: A ballast water treatment device includes a ballast tank, a main pipe, a circulation pipe, and a sterilizing component-introducing unit. The circulation pipe returns ballast water stored in the ballast tank to the main pipe. The main pipe guides ballast water to the ballast tank. The sterilizing component-introducing unit introduces a sterilizing component to a downstream side of a part of the main pipe connected with the circulation pipe. In a process of returning a part of ballast water stored in the ballast tank to the ballast tank via the circulation pipe and the main pipe, by pouring a sterilizing component from the sterilizing component-introducing unit, a sterilizing component can be added to the ballast water. Accordingly, the ballast water treatment device enables a sterilizing component concentration of ballast water to be increased.
    Type: Application
    Filed: February 3, 2016
    Publication date: November 1, 2018
    Applicant: Kuraray Co., Ltd.
    Inventor: Yasuhiro TAJIMA
  • Publication number: 20180215371
    Abstract: An electric power source system includes an electric power generator, a voltage conversion device, a battery, an electrical load, and a control device. The voltage conversion device converts a direct current voltage. The battery is electrically connected to the electric power generator through the voltage conversion device. The electrical load is electrically connected to the electric power generator in a parallel relationship with the battery without passing through the voltage conversion device. The control device is configured to charge the battery through the voltage conversion device based on regenerative electric power in a regenerative state in which the regenerative electric power is generated by the electric power generator. the control device is configured to increase an electric power consumption of the electrical load further when the control device detects an event that impedes the charging in the regenerative state than when the control device does not detect the event.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 2, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro TAJIMA, Mitsuhiro MIURA
  • Publication number: 20180050290
    Abstract: A ballast water production method is provided. The method includes a filtering step that passes raw water supplied into a housing through a filter from a primary side that is upstream of the filter to a secondary side that is downstream of the filter; a volume-increasing step after the filtering step that increases a volume of water present in a space on the secondary side of the housing while the supply of the raw water into the housing is stopped; a pressurizing step after the volume-increasing step that pressurizes an inside of the housing from the secondary side while the supply of the raw water into the housing is stopped; and a rinsing step after the pressurizing step that passes a fluid through the filter from the secondary side to the primary side while the supply of the raw water into the housing is stopped.
    Type: Application
    Filed: February 3, 2016
    Publication date: February 22, 2018
    Applicant: KURARAY CO., LTD.
    Inventors: Mitsuaki YAMAMOTO, Kazuaki HAGIWARA, Yasuhiro TAJIMA
  • Publication number: 20170144650
    Abstract: When it is judged that a downward slope segment exists in a scheduled traveling route, the control device of a hybrid vehicle sets a target remaining capacity SOC* in a pre-use segment in a downward slope segment and the downward slope segment to a “low-side remaining capacity Sd which is ?Sd smaller than a standard remaining capacity Sn” (step S105). Furthermore, when it is presumed that a rise amount of a remaining capacity by an extended regeneration control is large in the pre-use segment and the downward slope segment (refer to a judgment as “Yes” in step S104), the target remaining capacity SOC* is set to a “low-side remaining capacity Sd which is a sum of ?Sd and ?S1 smaller than the standard remaining capacity Sn” (step S106).
    Type: Application
    Filed: November 18, 2016
    Publication date: May 25, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyomi NAGAMIYA, Yasuhiro TAJIMA, Haruki OGURI, Masafumi UCHIHARA, Shigeki MATSUMOTO
  • Publication number: 20160297322
    Abstract: When a vehicle is in an accelerator off state and satisfies a free-run condition, a regeneration control unit performs free-run control on the vehicle so that the amount of regenerative electric power is decreased. The regeneration control unit sets a free-run prohibited zone between a starting point of a regeneration enhancement zone and a position that is located in front of and separated by a determination distance from the starting point.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 13, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro TAJIMA, Kunihiko JINNO, Haruki OGURI, Yoshikazu MOTOZONO, Kiyomi NAGAMIYA
  • Patent number: 8941745
    Abstract: A mobile communication apparatus comprises: a first camera unit for capturing an image of a subject; a second camera unit for capturing an image of the camera operator or an image of an object possessed by the camera operator; an activation control unit; an operation recognizing unit; and an image capture control unit. The activation control unit controls, in response to an activation instruction, the second camera unit to start an image capture operation and sequentially generate still-image data. The operation recognizing unit compares, in response to an instruction to start the image capture operation, still-image data, specifically, current still-image data and the previous still-image data. If the current still-image data have varied relative to the previous still-image data, the image capture control unit controls the first camera unit to capture an image of the subject to generate image capture data.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: January 27, 2015
    Assignee: Lenovo Innovations Limited (Hong Kong)
    Inventor: Yasuhiro Tajima
  • Publication number: 20140159886
    Abstract: A vehicle operator assisting apparatus is configured to assist an operator of an own vehicle by displaying an image of a virtual preceding vehicle visually recognizable by the operator as if the virtual preceding vehicle was running in front of said own vehicle in a running state. The assisting apparatus comprises: a history data base storing a driving history of said operator; a virtual preceding vehicle control portion determining a running state of said virtual proceeding vehicle based on said driving history generating portion generating a relationship between a distance between said own vehicle and an actual preceding vehicle, and a running speed of said own vehicle, and storing the relationship in said history database. Said virtual preceding vehicle control portion includes a driving characteristics extracting portion determining a distance between said own vehicle and said virtual preceding vehicle based on said relationship.
    Type: Application
    Filed: July 4, 2011
    Publication date: June 12, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto Hasegawa, Shoichi Shono, Yoshikazu Motozono, Masao Omura, Akihiro Ueda, Yasuhiro Tajima, Tomohiro Usami, Mitsuhiro Miura
  • Patent number: 8593340
    Abstract: The inter-mobile body carrier phase positioning device according to the invention includes: a first observation data acquisition means that acquires observation data concerning a phase accumulation value observed in a first mobile body; a second observation data acquisition means that acquires observation data concerning a phase accumulation value observed in a second mobile body; a satellite pair determination means that determines pairs of satellites used for carrier phase positioning; and a carrier phase positioning means that takes, between each of the pairs of the satellites determined by the satellite pair determination means, a single or double difference between the observation data acquired by the first observation data acquisition means and the observation data acquired by the second observation data acquisition means, and determines relative positional relation between the first mobile body and the second mobile body by carrier phase positioning using the single or double difference of the observat
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: November 26, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuhiro Tajima, Kazunori Kagawa, Masafumi Uchihara
  • Patent number: 8510027
    Abstract: A vehicle traveling position judging method of the present invention is a vehicle traveling position judging method for judging the traveling position of a preceding vehicle, and includes: a relative position information acquisition step of acquiring the relative position information of the preceding vehicle and a host vehicle at a predetermined point in time; a host vehicle traveling trajectory information acquisition step of acquiring traveling trajectory information of the host vehicle after the predetermined point in time; and a preceding vehicle position judging step of judging a traveling position of the preceding vehicle on the basis of the relative position information and the traveling trajectory information of the host vehicle.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: August 13, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuhiro Tajima, Kazunori Kagawa
  • Patent number: 8423289
    Abstract: An inter-moving body interferometric positioning system for carrying out positioning in coordination with three or more moving bodies that can mutually communicate, including: a reference vehicle decision unit for deciding on a single moving body to function as a reference vehicle from among three or more moving bodies, and a positioning unit for interferometrically determining respective relative positions of other moving bodies relative to the reference moving body that is to function as a reference vehicle decided on by the reference moving body decision unit using satellite wave monitoring data monitored in each of the three or more moving bodies. This inter-moving body interferometric positioning system specifies relative positions among the other moving bodies using positioning results of the positioning unit.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: April 16, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazunori Kagawa, Masafumi Uchihara, Yasuhiro Tajima
  • Publication number: 20120224074
    Abstract: A mobile communication apparatus comprises: a first camera unit for capturing an image of a subject; a second camera unit for capturing an image of the camera operator or an image of an object possessed by the camera operator; an activation control unit; an operation recognizing unit; and an image capture control unit. The activation control unit controls, in response to an activation instruction, the second camera unit to start an image capture operation and sequentially generate still-image data. The operation recognizing unit compares, in response to an instruction to start the image capture operation, still-image data, specifically, current still-image data and the previous still-image data. If the current still-image data have varied relative to the previous still-image data, the image capture control unit controls the first camera unit to capture an image of the subject to generate image capture data.
    Type: Application
    Filed: October 22, 2010
    Publication date: September 6, 2012
    Applicant: NEC CORPORATION
    Inventor: Yasuhiro Tajima
  • Patent number: 8259009
    Abstract: In a case in which three or more movable objects, each of those detecting the relative position with respect to another movable object, are able to communicate with each other: a reference movable object obtains observation data and transmits the observation data to non-reference movable objects; one non-reference movable object calculates the relative position with respect to the reference movable object by performing interferometric positioning using the observation data obtained by the observation data obtaining means and data including observation data received from the reference movable object, and also transmits data including an integer bias calculated as interferometric positioning results to another non-reference movable object and receives reliability determination results regarding the interferometric positioning; and the another non-reference movable object receives data including the integer bias from the one non-reference movable object and determines the reliability of the interferometric posit
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: September 4, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuhiro Tajima, Kazunori Kagawa, Masafumi Uchihara