Patents by Inventor Kazuaki Murayama

Kazuaki Murayama 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: 20210037571
    Abstract: To improve an avoidance rate of collision of data transmitted according to a listening result, a user terminal includes: a reception section that, when an idle state is detected by listening in a radio base station, receives a transmission request signal addressed to each of one or more user terminals from the radio base station; a transmission section that transmits a response signal for the transmission request signal; and a control section that controls reception of downlink data that is multiplexed and transmitted from the radio base station within a given duration after the listening in response to the response signal.
    Type: Application
    Filed: March 29, 2018
    Publication date: February 4, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Murayama, Hiroki Harada, Kazuaki Takeda, Satoshi Nagata
  • Publication number: 20210029552
    Abstract: A reception apparatus includes: a receiving section that receives a plurality of request signals that have been transmitted by respectively using a plurality of precoding based on a listening result of a first frequency range; a transmitting section that transmits a response signal that is based on received quality of the plurality of request signals; and a control section that controls reception of data transmitted in the first frequency range by using precoding determined based on the response signal among the plurality of precoding.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 28, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Murayama, Hiroki Harada, Kazuaki Takeda, Satoshi Nagata
  • Publication number: 20210007140
    Abstract: A transmitting apparatus that transmits data in a first frequency band is provided with a transmitting section that transmits a transmission request signal of the data in the first frequency band, a receiving section that receives a response signal to the transmission request signal in a second frequency band, and a control section that controls transmission of the data based on the response signal.
    Type: Application
    Filed: February 16, 2018
    Publication date: January 7, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Murayama, Hiroki Harada, Kazuaki Takeda, Satoshi Nagata
  • Patent number: 10857795
    Abstract: A head includes a flow path substrate including a flow path of the liquid in the flow path substrate, a nozzle plate which is attached to the flow path substrate and in which the nozzle is formed, a pressure chamber substrate that is attached to a location facing the nozzle plate with the flow path substrate interposed therebetween and that has a pressure chamber, and a pressure generation portion that operates according to an electrical signal from a wiring substrate coupled to an electrode provided on the pressure chamber substrate and that changes a pressure of the pressure chamber to eject the liquid from the nozzle, in which the nozzle plate and the wiring substrate are disposed such that the nozzle plate does not overlap a coupling portion between the wiring substrate and the electrode when viewed in a thickness direction of the flow path substrate.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: December 8, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Toshiro Murayama, Yuma Fukuzawa, Shunya Fukuda, Kazuaki Uchida, Shunsuke Watanabe, Noriaki Okazawa
  • Patent number: 10852457
    Abstract: An imaging device of the present invention includes: an imaging optical system that collects light from a subject and forms a primary image of the subject; a microlens array having a plurality of microlenses (5a) that are two-dimensionally arrayed at a position of the primary image formed by the imaging optical system or a position conjugate with the primary image; a relay optical system that relays light collected by the microlenses; a light-receiving part that receives, with a plurality of light-receiving elements, the light relayed by the relay optical system; and an adjusting unit that switches between a first layout state, in which the a plurality of light-receiving elements and back focal positions of the microlenses are conjugate with each other, and a second layout state, in which the plurality of light-receiving elements and principal-point positions of the microlenses are conjugate with each other.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: December 1, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Satoshi Watanabe, Kazuaki Murayama
  • Patent number: 10819899
    Abstract: An image acquisition device according to the present invention includes: an image-acquisition-optical-system; a microlens array having microlenses; a phase filter modulating a phase distribution to light incident on the microlenses via the image-acquisition-optical-system; a light receiving unit receiving the light focused by the microlenses by light receiving elements; an adjusting unit switching between a first arrangement state in which the light receiving elements are arranged at back focal positions of the microlenses and a second arrangement state in which the light receiving elements are arranged in vicinities of principal point positions of the microlenses; a memory storing a point image intensity distribution at the light receiving unit in each of the arrangement states; and an arithmetic operation unit generating a processed image by using the point image intensity distribution and image information at the light receiving unit in each of the arrangement states.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: October 27, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Satoshi Watanabe, Kazuaki Murayama
  • Patent number: 10682855
    Abstract: A liquid ejecting head has: a nozzle plate defining a nozzle; a pressure generating section corresponding to a pressure chamber communicating with the nozzle and the section configured to cause a liquid to be ejected from the nozzle; a common flow path through which the liquid is to be supplied to and discharged from the pressure chamber; and a vibration absorbing body configured to eliminate changes in pressure in the common flow path. The vibration absorbing body and the nozzle plate each define an inner wall of the common flow path and an outer wall of the liquid ejecting head.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: June 16, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Kazuaki Uchida, Toshiro Murayama, Shunya Fukuda
  • Publication number: 20200073022
    Abstract: An imaging device of the present invention includes: an imaging optical system that collects light from a subject and forms a primary image of the subject; a microlens array having a plurality of microlenses (5a) that are two-dimensionally arrayed at a position of the primary image formed by the imaging optical system or a position conjugate with the primary image; a relay optical system that relays light collected by the microlenses; a light-receiving part that receives, with a plurality of light-receiving elements, the light relayed by the relay optical system; and an adjusting unit that switches between a first layout state, in which the a plurality of light-receiving elements and back focal positions of the microlenses are conjugate with each other, and a second layout state, in which the plurality of light-receiving elements and principal-point positions of the microlenses are conjugate with each other.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 5, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Satoshi WATANABE, Kazuaki MURAYAMA
  • Publication number: 20200077015
    Abstract: An image acquisition device according to the present invention includes: an image-acquisition-optical-system; a microlens array having microlenses; a phase filter modulating a phase distribution to light incident on the microlenses via the image-acquisition-optical-system; a light receiving unit receiving the light focused by the microlenses by light receiving elements; an adjusting unit switching between a first arrangement state in which the light receiving elements are arranged at back focal positions of the microlenses and a second arrangement state in which the light receiving elements are arranged in vicinities of principal point positions of the microlenses; a memory storing a point image intensity distribution at the light receiving unit in each of the arrangement states; and an arithmetic operation unit generating a processed image by using the point image intensity distribution and image information at the light receiving unit in each of the arrangement states.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 5, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Satoshi WATANABE, Kazuaki MURAYAMA
  • Publication number: 20200001608
    Abstract: A head includes a flow path substrate including a flow path of the liquid in the flow path substrate, a nozzle plate which is attached to the flow path substrate and in which the nozzle is formed, a pressure chamber substrate that is attached to a location facing the nozzle plate with the flow path substrate interposed therebetween and that has a pressure chamber, and a pressure generation portion that operates according to an electrical signal from a wiring substrate coupled to an electrode provided on the pressure chamber substrate and that changes a pressure of the pressure chamber to eject the liquid from the nozzle, in which the nozzle plate and the wiring substrate are disposed such that the nozzle plate does not overlap a coupling portion between the wiring substrate and the electrode when viewed in a thickness direction of the flow path substrate.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Inventors: Toshiro MURAYAMA, Yuma FUKUZAWA, Shunya FUKUDA, Kazuaki UCHIDA, Shunsuke WATANABE, Noriaki OKAZAWA
  • Publication number: 20200001602
    Abstract: A liquid ejection head includes a flow path substrate, a first plate having a nozzle, and a second plate. A flow path substrate includes a first communication path which passes through a flow path substrate in a thickness direction and has an opening on each of a first plate side and a second plate side, and a second communication path communicating with an opening on a first plate side of a first communication path at a first plate side and extending on the second plate side. A pressure chamber communicating with a first communication path and a first flow path through which a liquid flows into a pressure chamber are formed by a part of a second plate and a part of a flow path substrate.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Inventors: Toshiro MURAYAMA, Yuma FUKUZAWA, Shunya FUKUDA, Kazuaki UCHIDA, Shunsuke WATANABE, Noriaki OKAZAWA
  • Publication number: 20190291434
    Abstract: A liquid ejecting head has: a nozzle plate defining a nozzle; a pressure generating section corresponding to a pressure chamber communicating with the nozzle and the section configured to cause a liquid to be ejected from the nozzle; a common flow path through which the liquid is to be supplied to and discharged from the pressure chamber; and a vibration absorbing body configured to eliminate changes in pressure in the common flow path. The vibration absorbing body and the nozzle plate each define an inner wall of the common flow path and an outer wall of the liquid ejecting head.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 26, 2019
    Inventors: Kazuaki UCHIDA, Toshiro MURAYAMA, Shunya FUKUDA
  • Publication number: 20190246453
    Abstract: Disclosed is a scheme of transmitting various types of radio signals for which interference between adjacent cells is considered in a radio communication system (for example, dynamic TDD) in which uplink communication and downlink communication can be dynamically switched. A feature of the present invention relates to user equipment including a transceiver that performs transmission and reception of a radio signal with a base station in accordance with a communication scheme in which uplink communication and downlink communication are dynamically switched and a signal processor that processes the radio signal, wherein the transceiver transmits a connection request signal generated by the signal processor in fixed uplink radio resources of the communication scheme.
    Type: Application
    Filed: October 31, 2017
    Publication date: August 8, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Yousuke Sano, Kazuki Takeda, Kazuaki Takeda, Daiki Takeda, Daisuke Murayama, Satoshi Nagata
  • Patent number: 9981641
    Abstract: Provided is a body reservoir assembly whose height can be reduced. In the body reservoir assembly, the reservoir comprises: a recessed portion formed on a bottom surface of the reservoir; and a reservoir side connecting portion formed in the recessed portion and connected to a cylinder portion.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: May 29, 2018
    Assignees: Autoliv Nissin Brake Systems Japan Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Motoyasu Nakamura, Yoshiteru Matsunaga, Kazuaki Murayama
  • Patent number: 9975532
    Abstract: Provided is a master cylinder apparatus with a reduced size enabled by simplifying the fluid passageway configuration. A master cylinder apparatus which includes a base member containing a fluid passageway for brake fluid and to which an operation of a brake operator is inputted is provided with: a master cylinder installed on the base member to generate a fluid pressure based on an input produced by operating the brake operator; and at least two solenoid valves attached to one side of the base member to open or close the fluid passageway. The two solenoid valves are disposed symmetrically with respect to a central axis along the axial direction of the master cylinder as viewed from a direction perpendicular to the one side of the base member.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: May 22, 2018
    Assignees: Autoliv Nissin Brake Systems Japan Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Yoshiteru Matsunaga, Motoyasu Nakamura, Kazuaki Murayama
  • Patent number: 9878694
    Abstract: A stroke simulator and a bush for a stroke simulator are configured so that a bush provided to a stroke simulator can be attached without direction management. The stroke simulator generates brake reaction force by a simulator piston that is displaced within a cylinder by hydraulic pressure generated according to the operation of a brake pedal by a driver. A cylindrical rubber bush elastically deformed in an axial direction by pressure from the simulator piston to generate brake reaction force, the bush characterized in that a first end section on the simulator piston side and a second end section facing the first end section contain the same number, at least two, of concave sections concaved in the axial direction, and the concave section formed in the first end section and the concave section formed in the second end section are formed in different positions in the axial direction.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: January 30, 2018
    Assignees: Honda Motor Co., Ltd., Autoliv Nissin Brake Systems Japan Co., Ltd.
    Inventors: Nobutake Hyodo, Kazuaki Murayama, Motoyasu Nakamura, Shunsuke Aoki
  • Patent number: 9777751
    Abstract: Disclosed is a braking device in which all multiple ports (for example, input ports (15c, 15d) and output ports (15a, 15b)) provided on a front surface portion (30) of a base (10) of a master cylinder (1), connector connection ports (23a, 24a) of connectors (23, 24) that electrically conducts an electrical part accommodated in a housing (20), and a pipe connection port (3c) to which a hose is connected of a reservoir (3) are arranged toward front of a vehicle when a starting device (A1) is assembled in the vehicle.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: October 3, 2017
    Assignees: Honda Motor Co., Ltd., Autoliv Nissin Brake Systems Japan Co., Ltd.
    Inventors: Kazuaki Murayama, Yoshiteru Matsunaga, Motoyasu Nakamura
  • Patent number: 9758143
    Abstract: There is provided a vehicle brake system to which an electric brake actuator constituting the vehicle brake system is stably attached and in which it is possible to dispose the electric brake actuator in a power plant storage chamber in a space-efficient manner. A vehicle brake system configured by disposing, on a vehicle, an input device to which the brake operation of an operator is inputted and a motor cylinder device for generating brake fluid pressure by driving a hydraulic pressure controlling piston stored in a cylindrical cylinder main body by means of an electric motor at least in accordance with the brake operation, wherein the motor cylinder device is attached in a manner such that at least a portion of the cylinder main body overlaps with a power plant in the vehicle up and down direction; and the electric motor is disposed below the cylinder main body.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: September 12, 2017
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takaaki Ohnishi, Kunimichi Hatano, Kazuaki Murayama
  • Patent number: 9726285
    Abstract: Provided is a piston push rod assembly which can prevent discomfort from being imparted during the operation of a brake pedal by a driver. A piston push rod assembly, wherein: a second piston is provided with a piston slide section which is housed in a cylinder and which slides relative to the cylinder, and a connection tube section which is connected to a push rod; the piston slide section is covered by metal plating; the connection tube section has a non-plated section; and the second piston and the push rod are connected by the caulking of the connection tube section when the push rod has been inserted inside the connection tube section.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: August 8, 2017
    Assignees: Honda Motor Co., Ltd., Autoliv Nissin Brake Systems Japan Co., Ltd.
    Inventors: Kazuaki Murayama, Jiro Suzuki, Takaaki Ohnishi, Motoyasu Nakamura, Yoshiyuki Takamatsu, Kazuhiro Tagata
  • Patent number: 9643585
    Abstract: Provided is a stroke simulator capable of suppressing occurrence of inclination of a piston with respect to a sliding surface formed in a cylinder. The stroke simulator includes a simulator piston which is displaced by sliding on a sliding surface formed in a first cylinder, and a first return spring which is housed in the first cylinder and applies, to the simulator piston, a reaction force which is generated by an elastic deformation of the spring under a pressing force due to a displacement of the simulator piston, and generates the reaction force which is applied to the simulator piston as a brake reaction force for a brake operating element. The stroke simulator is characterized in that a cup seal for sealing a gap formed between the sliding surface and the simulator piston is mounted in the middle in the axial direction of the sliding surface.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: May 9, 2017
    Assignees: Honda Motor Co., Ltd., Autoliv Nissin Brake Systems Japan Co., Ltd.
    Inventors: Kazuaki Murayama, Takaaki Ohnishi, Kazuhiro Tagata