Patents by Inventor Yusuke Tokunaga

Yusuke Tokunaga 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: 11914444
    Abstract: An in-vehicle electronic system comprises a core ECU (Electronic Control Unit) mounted in a vehicle and a plurality of slave ECUs that is capable of communicating with the core ECU through an in-vehicle communication network, wherein the core ECU is configured to manage a current time while a main power source of the vehicle is in an off state and manage an activation time of each of the plurality of slave ECUs in a sleep state with a management table while the main power source is in an off state, wherein the core ECU is configured to send an activation signal to each slave ECU through the in-vehicle communication network when the current time becomes the activation time of each of the plurality of slave ECUs while the main power source is in an off state.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: February 27, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tomoya Tokunaga, Yusuke Yoshimura, Satoshi Kono
  • Publication number: 20230406656
    Abstract: An image forming apparatus includes a housing having an opening; a drum configured to rotate around a rotation axis to convey a medium in a conveyance direction; an image former configured to form an image on the medium on the drum; and a reader downstream of the image former in the conveyance direction, the reader configured to read the image on the medium formed by the image former. The image former and the reader are radially arranged with respect to the rotation axis of the drum. The reader is drawable from the opening of the housing along the rotation axis of the drum.
    Type: Application
    Filed: May 26, 2023
    Publication date: December 21, 2023
    Applicant: Ricoh Company, Ltd.
    Inventor: Yusuke Tokunaga
  • Publication number: 20230398786
    Abstract: An image forming apparatus includes: a housing having an opening; a drum configured to rotate around a rotation axis to convey a medium in a conveyance direction; an image former configured to form an image on the medium on the drum; a reader downstream of the image former in the conveyance direction, the reader configured to read the image on the medium formed by the image former; a first space accommodating the reader; a second space downstream of the first space in the conveyance direction; a path between the first space and the second space; and a shield configured to openably close the path. The image former and the reader are radially arranged with respect to the rotation axis of the drum.
    Type: Application
    Filed: June 5, 2023
    Publication date: December 14, 2023
    Applicant: Ricoh Company, Ltd.
    Inventor: Yusuke Tokunaga
  • Patent number: 11711474
    Abstract: A reading device and an image forming apparatus. The reading device includes a reader disposed at a scanning position, the reader being configured to read an image formed on a surface of a sheet, a movement mechanism to move the reader between the scanning position and a separated position away from the scanning position, and a reference plate disposed at a first position facing a reading face of the reader, the reference plate being configured to obtain a reference value to be used when the reader reads the image. In the reading device, the reference plate rotates around an axis from a second position facing a side of the reader to the first position or from the first position to the second position in conjunction with movement of the reader from the scanning position to the separated position by the movement mechanism The image forming apparatus includes the reading device.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: July 25, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Taiki Yamamoto, Yusuke Tokunaga, Yuichiro Maeyama, Kiyoshi Hata
  • Patent number: 11647306
    Abstract: A solid-state imaging device includes: a pixel unit that outputs a pixel signal corresponding to an amount of incident light; an A/D converter that performs A/D conversion on the pixel signal; and a D/A conversion circuit that generates a reference signal to be used by the A/D converter. The D/A conversion circuit includes a first buffer circuit that outputs a base voltage VTOP for generating the reference signal, and the first buffer circuit includes a differential pair circuit including a first transistor and a second transistor, and a suppression circuit that suppresses a variation in the base voltage by canceling out a characteristic difference between the first transistor and the second transistor.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: May 9, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Yusuke Tokunaga
  • Publication number: 20230095023
    Abstract: An image reading device includes a plurality of readers, an access opening, and a lift. The plurality of readers read an image on a recording medium. The plurality of readers are arranged around a carrier to rotate while carrying the recording medium on a peripheral surface of the carrier. The plurality of readers are arranged radially about a rotation axis of the carrier. The plurality of readers are to be introduced through the access opening. The lift includes a cable to lift one reader of the plurality of readers introduced through the access opening. The lift lifts and locates the one reader at a predetermined height position around the carrier with the cable.
    Type: Application
    Filed: September 7, 2022
    Publication date: March 30, 2023
    Inventor: Yusuke TOKUNAGA
  • Publication number: 20230030207
    Abstract: A reading device and an image forming apparatus. The reading device includes a reader disposed at a scanning position, the reader being configured to read an image formed on a surface of a sheet, a movement mechanism to move the reader between the scanning position and a separated position away from the scanning position, and a reference plate disposed at a first position facing a reading face of the reader, the reference plate being configured to obtain a reference value to be used when the reader reads the image. In the reading device, the reference plate rotates around an axis from a second position facing a side of the reader to the first position or from the first position to the second position in conjunction with movement of the reader from the scanning position to the separated position by the movement mechanism The image forming apparatus includes the reading device.
    Type: Application
    Filed: June 24, 2022
    Publication date: February 2, 2023
    Inventors: Taiki YAMAMOTO, Yusuke TOKUNAGA, Yuichiro MAEYAMA, Kiyoshi HATA
  • Patent number: 11490043
    Abstract: An imaging device includes a pixel array, a first converter, a second converter, a first ramp signal generation circuit that is disposed closer to the first converter than to the second converter and supplies a first ramp signal to the first converter and the second converter, a first connection line having one end connected to an output terminal of the first ramp signal generation circuit and including a portion extending away from an input terminal of the first converter in a path from the one end to the other end of the first connection line, and a second connection line having one end connected to the other end of the first connection line and the other end connected to the input terminal and including a portion extending closer to the input terminal in a path from the one end to the other end of the second connection line.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: November 1, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Yusuke Tokunaga
  • Patent number: 11323083
    Abstract: An amplifier circuit has: a first amplifier circuit, including a chopper circuit amplifying a first differential signal input between first and second input terminals to output a second differential signal; and a second amplifier circuit amplifying the second differential signal to output a single-ended signal. The second amplifier circuit includes: a first circuit including first and second transistors, the first circuit being connected to the first amplifier circuit so that the second differential signal input into gates of these transistors, the first circuit converting the second differential signal to a current flowing into a first node connected to the first transistor and a current flowing into a second node connected to the second transistor; and a second circuit negatively feeding back a voltage at the second node so that the difference in voltage between these nodes is reduced. The second amplifier circuit outputs the single-ended signal from the first node.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: May 3, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Yusuke Tokunaga
  • Publication number: 20220070397
    Abstract: A solid-state imaging device includes: a pixel unit that outputs a pixel signal corresponding to an amount of incident light; an A/D converter that performs A/D conversion on the pixel signal; and a D/A conversion circuit that generates a reference signal to be used by the A/D converter. The D/A conversion circuit includes a first buffer circuit that outputs a base voltage VTOP for generating the reference signal, and the first buffer circuit includes a differential pair circuit including a first transistor and a second transistor, and a suppression circuit that suppresses a variation in the base voltage by canceling out a characteristic difference between the first transistor and the second transistor.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 3, 2022
    Inventor: YUSUKE TOKUNAGA
  • Patent number: 11077666
    Abstract: A waste liquid collector includes a waste liquid tank, a rotatable member, and a cover. The waste liquid tank is removably inserted in the waste liquid collector, the waste liquid tank configured to collect waste liquid. The rotatable member is configured to rotate with removal or insertion of the waste liquid tank. The cover is configured to contact a waste liquid inlet portion of the waste liquid tank to cover a waste liquid inlet portion, the cover being slidable with respect to the rotatable member.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: August 3, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yusuke Tokunaga, Daisuke Nakamura
  • Publication number: 20210160449
    Abstract: An imaging device includes a pixel array, a first converter, a second converter, a first ramp signal generation circuit that is disposed closer to the first converter than to the second converter and supplies a first ramp signal to the first converter and the second converter, a first connection line having one end connected to an output terminal of the first ramp signal generation circuit and including a portion extending away from an input terminal of the first converter in a path from the one end to the other end of the first connection line, and a second connection line having one end connected to the other end of the first connection line and the other end connected to the input terminal and including a portion extending closer to the input terminal in a path from the one end to the other end of the second connection line.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 27, 2021
    Inventor: YUSUKE TOKUNAGA
  • Publication number: 20210006218
    Abstract: An amplifier circuit has: a first amplifier circuit, including a chopper circuit amplifying a first differential signal input between first and second input terminals to output a second differential signal; and a second amplifier circuit amplifying the second differential signal to output a single-ended signal. The second amplifier circuit includes: a first circuit including first and second transistors, the first circuit being connected to the first amplifier circuit so that the second differential signal input into gates of these transistors, the first circuit converting the second differential signal to a current flowing into a first node connected to the first transistor and a current flowing into a second node connected to the second transistor; and a second circuit negatively feeding back a voltage at the second node so that the difference in voltage between these nodes is reduced. The second amplifier circuit outputs the single-ended signal from the second node.
    Type: Application
    Filed: September 23, 2020
    Publication date: January 7, 2021
    Inventor: YUSUKE TOKUNAGA
  • Publication number: 20200101745
    Abstract: A waste liquid collector includes a waste liquid tank, a rotatable member, and a cover The waste liquid tank is removably inserted in the waste liquid collector, the waste liquid tank configured to collect waste liquid. The rotatable member is configured to rotate with removal or insertion of the waste liquid tank. The cover is configured to contact a waste liquid inlet portion of the waste liquid tank to cover a waste liquid inlet portion, the cover being slidable with respect to the rotatable member.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 2, 2020
    Inventors: Yusuke TOKUNAGA, Daisuke NAKAMURA
  • Patent number: 10070089
    Abstract: An inverting amplifier includes an input terminal, an output terminal, a PMOS transistor, another PMOS transistor, an NMOS transistor, another NMOS transistor, and a clamp circuit. The PMOS transistors are connected in series between a supply voltage and an output terminal. The NMOS transistors are connected in series between a ground voltage and the output terminal. The clamp circuit is connected to the gate of the other PMOS transistor and the gate of the other NMOS transistor. The clamp circuit includes a switch, a capacitor, another switch, and another capacitor. At least one of the gate of the PMOS transistor and the gate of the NMOS transistor is connected to the input terminal.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: September 4, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Yusuke Tokunaga
  • Patent number: 10049761
    Abstract: To provide a magnetic element which can generate a skyrmion, and a skyrmion memory which applies the magnetic element or the like. To provide a magnetic element with a chiral magnet for generating a skyrmion, the chiral magnet is made of a magnetic material having a ?-Mn type crystal structure. Also, to provide a magnetic element with a chiral magnet for generating a skyrmion, the chiral magnet is made of a magnetic material having an Au4Al type crystal structure.
    Type: Grant
    Filed: March 5, 2017
    Date of Patent: August 14, 2018
    Assignee: RIKEN
    Inventors: Yusuke Tokunaga, Xiuzhen Yu, Yasujiro Taguchi, Yoshinori Tokura, Yoshio Kaneko
  • Patent number: 10008282
    Abstract: To provide a magnetic element which can generate a skyrmion, and a skyrmion memory which applies the magnetic element or the like. To provide a magnetic element with a chiral magnet for generating a skyrmion, the chiral magnet is made of a magnetic material having a ?-Mn type crystal structure. Also, to provide a magnetic element with a chiral magnet for generating a skyrmion, the chiral magnet is made of a magnetic material having an Au4Al type crystal structure.
    Type: Grant
    Filed: March 5, 2017
    Date of Patent: June 26, 2018
    Assignee: RIKEN
    Inventors: Yusuke Tokunaga, Xiuzhen Yu, Yasujiro Taguchi, Yoshinori Tokura, Yoshio Kaneko
  • Publication number: 20170272674
    Abstract: An inverting amplifier includes an input terminal, an output terminal, a PMOS transistor, another PMOS transistor, an NMOS transistor, another NMOS transistor, and a clamp circuit. The PMOS transistors are connected in series between a supply voltage and an output terminal. The NMOS transistors are connected in series between a ground voltage and the output terminal. The clamp circuit is connected to the gate of the other PMOS transistor and the gate of the other NMOS transistor. The clamp circuit includes a switch, a capacitor, another switch, and another capacitor. At least one of the gate of the PMOS transistor and the gate of the NMOS transistor is connected to the input terminal.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 21, 2017
    Inventor: Yusuke TOKUNAGA
  • Publication number: 20170178747
    Abstract: To provide a magnetic element which can generate a skyrmion, and a skyrmion memory which applies the magnetic element or the like. To provide a magnetic element with a chiral magnet for generating a skyrmion, the chiral magnet is made of a magnetic material having a ?-Mn type crystal structure. Also, to provide a magnetic element with a chiral magnet for generating a skyrmion, the chiral magnet is made of a magnetic material having an Au4Al type crystal structure.
    Type: Application
    Filed: March 5, 2017
    Publication date: June 22, 2017
    Inventors: Yusuke TOKUNAGA, Xiuzhen YU, Yasujiro TAGUCHI, Yoshinori TOKURA, Yoshio KANEKO
  • Patent number: 9491385
    Abstract: A switched capacitor circuit includes: a capacitor including a first terminal to which the input voltage is applied and a second terminal; an inverting amplifier including a second input terminal connected to the second terminal; a capacitor including a third terminal, a fourth terminal, and a fifth terminal which is connected to an output terminal; a capacitor including a seventh terminal, a sixth terminal connected to the second output terminal, and an eighth terminal connected to the third terminal; a capacitor connected in series between the second terminal and the output terminal; and an offset compensation unit which outputs an offset voltage having a value of a short-circuit voltage of the inverting amplifier to the fourth terminal and the seventh terminal.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: November 8, 2016
    Assignee: PANASONIC CORPORATION
    Inventor: Yusuke Tokunaga