Patents by Inventor Masaki Maruyama

Masaki Maruyama 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: 20210276534
    Abstract: A brake control device is applied to a vehicle including a regenerative generator. The brake control device includes a pressure adjustment unit that includes an electric pump and a pressure adjustment valve, and that adjusts adjustment liquid pressure of a pressure adjustment fluid path between the electric pump and the pressure adjustment valve; and a controller that controls the electric pump and the pressure adjustment valve. The controller, before starting a replacement operation to replace a regenerative braking force by the regenerative generator with a friction braking force by the adjustment liquid pressure, performs preceding pressurization to increase the adjustment liquid pressure from “0” and maintain the adjustment liquid pressure at predetermined liquid pressure, and after performing the preceding pressurization, increases the adjustment liquid pressure more than the predetermined liquid pressure by increasing a rotation speed of the electric pump, and then execute the replacement operation.
    Type: Application
    Filed: June 21, 2019
    Publication date: September 9, 2021
    Applicant: ADVICS CO., LTD.
    Inventors: Masaki MARUYAMA, Shunya WATANABE
  • Publication number: 20210268961
    Abstract: A display method, display device, and display system including a virtual image display device are configured to detect at least another moving object and an object including a fixed object and to display an image in the vicinity of, or in a position superimposed on, the detected object. When another moving object is detected, the virtual image display device regards this moving object as a target to be watched and displays an exaggerating image corresponding to a surrounding object existing near the target to be watched, in a position superimposed on the surrounding object.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 2, 2021
    Inventors: Misaki ASAMI, Masaki MARUYAMA
  • Publication number: 20210221231
    Abstract: A brake control device applied to a vehicle including a regenerative generator connected to a front wheel has an electric pump, and first and second pressure adjustment valves. The first pressure adjustment valve is provided in a brake fluid reflux path including the electric pump, adjusts the brake fluid to a first hydraulic pressure, and adjusts a rear wheel hydraulic pressure in a rear wheel cylinder to the first hydraulic pressure. The second pressure adjustment valve is provided in the reflux path, reduces the first hydraulic pressure to a second hydraulic pressure, and adjusts front wheel hydraulic pressure in a front wheel cylinder to the second hydraulic pressure. A front wheel flow rate to increase the front wheel hydraulic pressure is calculated using a brake operation member operation amount and a regeneration amount of the regenerative generator. The first pressure adjustment valve is controlled using the front wheel flow rate.
    Type: Application
    Filed: June 24, 2019
    Publication date: July 22, 2021
    Applicant: ADVICS CO., LTD.
    Inventors: Masaki MARUYAMA, Shunya WATANABE
  • Publication number: 20210197779
    Abstract: A brake control device adjusts a hydraulic pressure in a wheel cylinder in response to an operation amount of a brake operation member, and includes “a pressure adjustment unit that includes an electric pump and a pressure adjustment valve and adjusts hydraulic pressure in a pressure adjustment fluid path between the electric pump and the pressure adjustment valve”, and “a controller that controls the electric pump and the pressure adjustment valve”. The controller calculates an operation speed equivalent amount based on the operation amount, calculates a target rotation speed based on the operation speed equivalent amount, and controls the electric pump such that an actual rotation speed of the electric pump approaches the target rotation speed.
    Type: Application
    Filed: June 21, 2019
    Publication date: July 1, 2021
    Applicant: ADVICS CO., LTD.
    Inventors: Masaki MARUYAMA, Shunya WATANABE
  • Publication number: 20200385012
    Abstract: A recognition device includes a processor and a memory storing program instructions executable by the processor. The processor is configured to recognize a visual field range which extends from a viewpoint of a driver of a moving object in a line-of-sight direction and extends at a predetermined angle as moving away from the viewpoint with reference to a detection result of a line-of-sight detection device, recognize a target present in a surrounding environment of the moving object shown within image data on the basis of the image data in which surroundings of the moving object are imaged by a visual sensor disposed in the moving object and set an area of the recognized target in a predetermined shape, and set a plurality of determination points in the area of the target and determine whether or not the driver is recognizing the target on the basis of a degree of overlap between the plurality of determination points and the visual field range.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 10, 2020
    Inventors: Masaki Maruyama, Minoru Higuchi
  • Publication number: 20200387724
    Abstract: A driver state detection device includes at least two state detection units that include a first state detection unit and a second state detection unit that detect a state of a driver of a vehicle, in which the first state detection unit and the second state detection unit are disposed at positions between which the driver is interposed in a vehicle width direction, and the first state detection unit and the second state detection unit are disposed in front of a rear end of a driver's seat.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 10, 2020
    Inventors: Masaki Maruyama, Minoru Higuchi, Shinichi Murakami, Toshihiro Hashimoto
  • Publication number: 20200335375
    Abstract: Provided is an assembly jig set of semiconductor module having a plurality of semiconductor chips, the assembly jig set comprising: a first outer frame jig; and a plurality of inner piece jigs positioned by the first outer frame jig and each having a sectioned shape corresponding to the first outer frame jig, wherein one of the inner piece jigs has a plurality of opening portions for positioning the semiconductor chips. A manufacturing method of a semiconductor module using an assembly jig set is provided.
    Type: Application
    Filed: February 24, 2020
    Publication date: October 22, 2020
    Inventors: Kazunaga ONISHI, Takeshi YOKOYAMA, Masaki MARUYAMA
  • Publication number: 20200168006
    Abstract: An information processing apparatus that is associated with a vehicle, the apparatus comprises: one or more processors; and a memory storing instructions which, when the instructions are executed by the one or more processors, cause the information processing apparatus to function as: a setting unit configured to set a destination; and a display control unit configured to control a display unit to display a fee for priority passage to a destination and a time required to get to the destination, wherein the fee for priority passage is based on at least one of a fee to be paid in a case where priority passage is caused and a fee required for priority passage of another vehicle.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 28, 2020
    Inventors: Toshikatsu KURAMOCHI, Sohei HAYASHI, Suguru ISHIDA, Junya ONO, Kenichiro NAKAMURA, Masaki MARUYAMA, Masahiro YOSHINO, Takamasa UDAGAWA
  • Publication number: 20200166948
    Abstract: An information processing apparatus that is associated with a vehicle, the apparatus comprising a memory storing instructions which, when the instructions are executed by one or more processors, cause the apparatus to function as: a setting unit configured to set information of a transaction condition relating to priority passage for a road; a control unit configured to cause the vehicle to perform priority passage so that the vehicle overtakes another vehicle, in accordance with it being determined that priority passage on the road is possible based on the information of the transaction condition; and a processing unit configured to process payment of a fee based on the transaction condition, wherein the processing unit, in a case where the vehicle is caused to perform priority passage through the road, processes payment of a fee for priority passage.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 28, 2020
    Inventors: Toshikatsu KURAMOCHI, Sohei HAYASHI, Suguru ISHIDA, Junya ONO, Kenichiro NAKAMURA, Masaki MARUYAMA, Masahiro YOSHINO, Takamasa UDAGAWA
  • Publication number: 20200168007
    Abstract: An information processing apparatus that is for controlling lighting of a traffic light, comprising: a communication circuit configured to acquire information of a transaction condition relating to priority passage from a communication apparatus; one or more processors; and a memory storing instructions which, when the instructions are executed by the one or more processors, cause the information processing apparatus to function as: a control unit configured to control lighting of the traffic light according to the transaction condition on priority passage being satisfied; and a processing unit configured to process a payment of a fee based on the transaction condition on priority passage, wherein the processing unit, in a case where lighting of the traffic light has been controlled, processes the payment of the fee so as to collect a fee for priority passage.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 28, 2020
    Inventors: Toshikatsu KURAMOCHI, Sohei HAYASHI, Suguru ISHIDA, Junya ONO, Kenichiro NAKAMURA, Masaki MARUYAMA, Masahiro YOSHINO, Takamasa UDAGAWA
  • Patent number: 10656372
    Abstract: An imaging lens and imaging apparatus are disclosed. In one example, an imaging lens includes a first lens group having positive refractive power, a second lens group having a positive refractive power, and a third lens group having positive or negative refractive power, the first lens group being fixed with respect to an image plane, the second lens group traveling along an optical axis to the object side, and the third lens group being fixed with respect to the image plane. The first lens group may include two positive lenses and a negative lens. The second lens group may include a second a-lens component having negative refractive power and a second b-lens component having positive refractive power. The third lens group may include a third a-lens component having positive refractive power and a third b-lens component having negative refractive power.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: May 19, 2020
    Assignee: Sony Corporation
    Inventors: Masaki Maruyama, Hiroyuki Matsumoto
  • Patent number: 10604017
    Abstract: An electric braking device includes: a first valve unit for adjusting a first differential pressure between a master cylinder side liquid pressure and a wheel cylinder side liquid pressure; a storage unit forming a fluid storage chamber; second valve units for adjusting a second differential pressure between the master cylinder side liquid pressure and a storage chamber side liquid pressure; an electric pump for discharging the fluid in the storage chamber; and a control unit which, while operating the electric pump during a time from initiation of braking force application until a request value acquired by a request braking force acquiring unit reaches a maximum value, controls the first valve unit such that the first differential pressure becomes zero, and controls the second valve units such that the second differential pressure becomes zero.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: March 31, 2020
    Assignee: ADVICS CO., LTD.
    Inventors: Masaki Maruyama, Takahiro Yamaguchi, Koichi Kokubo
  • Patent number: 10449941
    Abstract: Provided is a braking device for a vehicle comprising: a first hydraulic pressure generation unit which generates hydraulic pressure corresponding to the volume of a master chambers in the master chambers that change in volume according to the movement of master pistons; a second hydraulic pressure generation unit which is configured so as to be capable of generating a desired hydraulic pressure in a bottoming state in which the forward movement of the master pistons is restricted by a master cylinder; braking force generation units which apply the braking force corresponding to the input hydraulic pressure to wheels of a vehicle; and a braking force control unit which causes the second hydraulic pressure generation unit to generate hydraulic pressure in the bottoming state, and inputs the hydraulic pressure to the braking force generation units.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: October 22, 2019
    Assignee: ADVICS CO., LTD.
    Inventors: Kazuya Maki, Shintaro Osaki, Masaki Maruyama
  • Publication number: 20190061532
    Abstract: An electric braking device includes: a first valve unit for adjusting a first differential pressure between a master cylinder side liquid pressure and a wheel cylinder side liquid pressure; a storage unit forming a fluid storage chamber; second valve units for adjusting a second differential pressure between the master cylinder side liquid pressure and a storage chamber side liquid pressure; an electric pump for discharging the fluid in the storage chamber; and a control unit which, while operating the electric pump during a time from initiation of braking force application until a request value acquired by a request braking force acquiring unit reaches a maximum value, controls the first valve unit such that the first differential pressure becomes zero, and controls the second valve units such that the second differential pressure becomes zero.
    Type: Application
    Filed: February 24, 2017
    Publication date: February 28, 2019
    Applicant: ADVICS CO., LTD.
    Inventors: Masaki MARUYAMA, Takahiro YAMAGUCHI, Koichi KOKUBO
  • Patent number: 10196049
    Abstract: A hydraulic brake system, including: a brake operation member; a brake device; a master cylinder; a communication switching valve; a low-pressure-source shut-off valve; a high-pressure source; a regulator; a pressure adjuster; and a controller, wherein, when a pressurizing state of the master cylinder is switched from a first pressurizing state to a second pressurizing state after initiation of an operation on the brake operation member, the controller executes a pressurizing-state switching control in which switching of a state of the low-pressure-source shut-off valve from an open state to a closed state and switching of a state of the communication switching valve from a closed state to an open state are carried out after a pressure-regulating state of the regulator has been switched from a first pressure-regulating state to a second pressure-regulating state by controlling the pressure adjuster to increase a second pilot pressure while the first pressurizing state is maintained.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: February 5, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, ADVICS CO., LTD.
    Inventors: Hiroshi Nakaoka, Kiyoyuki Uchida, Masaki Maruyama
  • Publication number: 20180372986
    Abstract: An imaging lens and imaging apparatus are disclosed. In one example, an imaging lens includes a first lens group having positive refractive power, a second lens group having a positive refractive power, and a third lens group having positive or negative refractive power, the first lens group being fixed with respect to an image plane, the second lens group traveling along an optical axis to the object side, and the third lens group being fixed with respect to the image plane. The first lens group may include two positive lenses and a negative lens. The second lens group may include a second a-lens component having negative refractive power and a second b-lens component having positive refractive power. The third lens group may include a third a-lens component having positive refractive power and a third b-lens component having negative refractive power.
    Type: Application
    Filed: December 5, 2016
    Publication date: December 27, 2018
    Applicant: Sony Corporation
    Inventors: Masaki Maruyama, Hiroyuki Matsumoto
  • Publication number: 20180118181
    Abstract: Provided is a braking device for a vehicle comprising: a first hydraulic pressure generation unit which generates hydraulic pressure corresponding to the volume of a master chambers in the master chambers that change in volume according to the movement of master pistons; a second hydraulic pressure generation unit which is configured so as to be capable of generating a desired hydraulic pressure in a bottoming state in which the forward movement of the master pistons is restricted by a master cylinder; braking force generation units which apply the braking force corresponding to the input hydraulic pressure to wheels of a vehicle; and a braking force control unit which causes the second hydraulic pressure generation unit to generate hydraulic pressure in the bottoming state, and inputs the hydraulic pressure to the braking force generation units.
    Type: Application
    Filed: April 21, 2016
    Publication date: May 3, 2018
    Applicant: ADVICS CO., LTD.
    Inventors: Kazuya MAKI, Shintaro OSAKI, Masaki MARUYAMA
  • Publication number: 20180093652
    Abstract: A hydraulic brake system, including: a brake operation member; a brake device; a master cylinder; a communication switching valve; a low-pressure-source shut-off valve; a high-pressure source; a regulator; a pressure adjuster; and a controller, wherein, when a pressurizing state of the master cylinder is switched from a first pressurizing state to a second pressurizing state after initiation of an operation on the brake operation member, the controller executes a pressurizing-state switching control in which switching of a state of the low-pressure-source shut-off valve from an open state to a closed state and switching of a state of the communication switching valve from a closed state to an open state are carried out after a pressure-regulating state of the regulator has been switched from a first pressure-regulating state to a second pressure-regulating state by controlling the pressure adjuster to increase a second pilot pressure while the first pressurizing state is maintained.
    Type: Application
    Filed: November 16, 2015
    Publication date: April 5, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ADVICS CO., LTD.
    Inventors: Hiroshi NAKAOKA, Kiyoyuki UCHIDA, Masaki MARUYAMA
  • Patent number: 9919687
    Abstract: Vibrations of a hydraulic pressure in an upstream portion due to operations of a slip control device during anti-lock control are transmitted to a control pressure chamber via a pressurizing piston of a master cylinder and a control piston of a regulator. During anti-lock control, in contrast, a pressure-increase linear valve and a pressure-reduction linear valve are opened, allowing change in volume of the control pressure chamber, resulting in reduction in stiffness. This reduction suppresses vibrations of a hydraulic pressure in the control pressure chamber, resulting in suppression of vibrations of a hydraulic pressure in a front pressure chamber. As a result, it is possible to reduce the lowering in control accuracy for a hydraulic pressure in a brake cylinder in anti-lock control using the hydraulic pressure in the front pressure chamber, which can well avoid a long braking distance.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: March 20, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, ADVICS CO., LTD.
    Inventors: Yusuke Kamiya, Masaaki Komazawa, Kiyoyuki Uchida, Masaki Ninoyu, Akitaka Nishio, Masaki Maruyama
  • Patent number: 9656644
    Abstract: The braking control device for controlling a master cylinder device includes a housing, an output piston, an input piston, a separation chamber opening and closing portion, and a driving hydraulic pressure generating portion, and is provided with an operation control for controlling the master cylinder device in an operation force operating state (regulator mode) in which the output piston is driven by operation force on a brake operation member and in a driving hydraulic pressure operating state (linear mode) in which the output piston is driven by driving hydraulic pressure from the driving hydraulic pressure generating portion; a brake operation judgment portion for judging the presence or absence of a brake operation and the probability thereof and a state transition limiter for limiting at least one of state transitions between the operating states when the presence of the brake operation and possibility thereof is determined.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: May 23, 2017
    Assignee: ADVICS CO., LTD.
    Inventors: Masaki Maruyama, Kazutaka Noro, Tatsushi Kobayashi, Yasunori Sakata, Akitaka Nishio, Masaaki Komazawa, Yusuke Kamiya, Kiyoyuki Uchida