Patents by Inventor Atsushi Imamura

Atsushi Imamura 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: 10966167
    Abstract: A radio communication apparatus is provided, which includes a receiver and a controller. The receiver, in operation, receives a first power headroom (PHR), which is obtained by subtracting a transmit power for a data channel from a maximum transmit power at a mobile station and which is transmitted from the mobile station, and receives a second PHR, which is obtained by subtracting the transmit power for the data channel and a transmit power for a control channel from the maximum transmit power at the mobile station and which is transmitted from the mobile station. The controller, in operation, selectively sets a simultaneous transmission of the data channel and the control channel in different frequency bands to be performed by the mobile station. When the data channel and the control channel are simultaneously transmitted in different frequency bands from the mobile station, the second PHR is obtained and transmitted from the mobile station.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 30, 2021
    Assignee: Sun Patent Trust
    Inventors: Takashi Iwai, Akihiko Nishio, Daichi Imamura, Yoshihiko Ogawa, Atsushi Matsumoto
  • Publication number: 20210051603
    Abstract: A radio transmitting apparatus determines a first coding rate for transmitting, in a single carrier system, data information based on information for determining the first coding rate, the information for determining the first coding rate being received from a base station; and determines a transmission power for the data information and the control information based on the information for determining the first coding rate.
    Type: Application
    Filed: November 2, 2020
    Publication date: February 18, 2021
    Inventors: Sadaki FUTAGI, Daichi IMAMURA, Atsushi MATSUMOTO, Takashi IWAI
  • Publication number: 20210039626
    Abstract: There are provided a controller and a control method for a hybrid vehicle including an engine with a supercharger serving as a drive power source for travel, a rotary machine serving as a drive power source for travel, and a power storage device configured to transmit and receive electric power to and from the rotary machine. The controller determines whether an operation of the supercharger is limited, compensates for a torque shortage of the engine due to limitation of the operation of the supercharger by a torque of the rotary machine when it is determined that the operation of the supercharger is limited, and curbs a decrease in an amount of electric power stored in the power storage device more when it is determined that the operation of the supercharger is limited than when it is determined that the operation of the supercharger is not limited.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 11, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tooru MATSUBARA, Atsushi Tabata, Koichi Okuda, Yasutaka Tsuchida, Kenta Kumazaki, Tatsuya Imamura
  • Patent number: 10906524
    Abstract: A control apparatus for a vehicular power transmitting system includes a power transmission switching portion configured to selectively establish a first drive mode by placing one of the first and second coupling elements in an engaged state, a second drive mode by placing the other of the first and second coupling elements in an engaged state, or a third drive mode by placing both of the first and second coupling elements in the engaged states. The power transmission switching portion switches the vehicular power transmitting system between the first and second drive modes through the third drive mode, where a predetermined condition is not satisfied, and switches the vehicular power transmitting system between the first and second drive modes with concurrent engaging and releasing actions of the first and second coupling elements, where the predetermined condition is satisfied.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: February 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masafumi Yamamoto, Atsushi Tabata, Tatsuya Imamura, Koichi Okuda, Kota Fujii
  • Publication number: 20210027026
    Abstract: Provided are a model training method for neural machine translation that enhances an encoder using a monolingual corpus of a target language and improves the accuracy of the entire translator, and a machine translation system for performing the model training method. The machine translation system 1000 uses a monolingual corpus of the target language to obtain multiple pieces of pseudo source language data, thus allowing for obtaining a large amount of pseudo parallel corpus data having diversity. Further, the machine translation system 1000 uses both the pseudo parallel corpus data having diversity, which has been obtained in large quantities, and the base parallel corpus data in a small quantity but with high accuracy, with the applied learning rates changed accordingly, to perform the learning process (training process) for the machine translation model. This allows the machine translation system 1000 to obtain a learned model (machine translation model) with very high accuracy.
    Type: Application
    Filed: February 12, 2019
    Publication date: January 28, 2021
    Inventors: Kenji IMAMURA, Atsushi FUJITA, Eiichiro SUMITA
  • Publication number: 20210020464
    Abstract: A substrate processing apparatus includes a discharge part including a nozzle configured to discharge a processing liquid onto a substrate; a liquid feeder configured to feed the processing liquid to the discharge part; a replenishment part configured to replenish the liquid feeder with the processing liquid to be fed to the discharge part; a connector including a switching valve configured to open/close a flow path between the replenishment part and the liquid feeder; a filter configured to remove foreign matters contained in the processing liquid; a replenishment preparation part configured to open the switching valve after reducing a pressure difference between the inside of the replenishment part and the liquid feeder; and a replenishment controller configured to start replenishment of the processing liquid from the replenishment part to the liquid feeder in a state in which the switching valve is opened by the replenishment preparation part.
    Type: Application
    Filed: July 16, 2020
    Publication date: January 21, 2021
    Inventors: Masayuki KAJIWARA, Katsunori ICHINO, Daisuke ISHIMARU, Takuya TAJIRI, Atsushi YAMAMOTO, Masato IMAMURA, Tomohiko MUTA, Tetsuro IRIYAMA, Takeaki SAKAMOTO, Hiroki OKAGUCHI, Kenji ADACHI
  • Publication number: 20210014849
    Abstract: Provided are a radio transmission device and a radio transmission method capable of improving downlink and uplink throughput even when performing dynamic symbol allocation. In the device and the method, BS and MS share a table correlating a basic TF as a combination of parameters such as TB size used for transmitting only user data, an allocation RB quantity, a modulation method, and an encoding ratio, with a derived TF having user data of different TB size by combining L1/L2 control information. Even when multiplexing L1/L2 control information, Index corresponding to the basic TF is reported from BS to MS.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 14, 2021
    Inventors: Daichi IMAMURA, Hidetoshi SUZUKI, Akihiko NISHIO, Atsushi MATSUMOTO
  • Publication number: 20210014030
    Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.
    Type: Application
    Filed: September 28, 2020
    Publication date: January 14, 2021
    Inventors: Atsushi Matsumoto, Daichi Imamura, Takashi Iwai, Yoshihiko Ogawa, Tomofumi Takata, Katsuhiko Hiramatsu
  • Publication number: 20210009416
    Abstract: An ozone generating device including an excimer lamp having an arc tube containing a luminescent gas, a first electrode, and a second electrode. The arc tube has a first end portion and a second end portion, a first diameter-reduced portion provided continuously from the first end portion, a diameter of which decreases as a distance from the first end portion increases, and a second diameter-reduced portion provided continuously from the second end portion, a diameter of which decreases as a distance from the second end portion increases, the first electrode is provided for an outer periphery surface of the first end portion, the second electrode is provided for an outer periphery surface of the second end portion, the arc tube is fixed via the cylindrical portion, and the first electrode is not provided over the first diameter-reduced portion, and/or the second electrode is not provided over the second diameter-reduced portion.
    Type: Application
    Filed: March 8, 2019
    Publication date: January 14, 2021
    Applicant: Ushio Denki Kabushiki Kaisha
    Inventors: Atsushi IMAMURA, Kazuhiro GOTO
  • Publication number: 20210014031
    Abstract: It is possible to improve the CQI reception performance even when a delay is caused in a propagation path, a transmission timing error is caused, or a residual interference is generated between cyclic shift amounts of different ZC sequences. For the second symbol and the sixth symbol of the ACK/NACK signal which are multiplexed by RS of CQI, (+, +) or (?, ?) is applied to a partial sequence of the Walsh sequence. For RS of CQI transmitted from a mobile station, + is added as an RS phase of the second symbol and ? is added as an RS phase of the sixth symbol. A base station (100) receives multiplexed signals of ACK/NACK signals and CQI signals transmitted from a plurality of mobile stations. An RS synthesis unit (119) performs synthesis by aligning the RS phase of CQI.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 14, 2021
    Inventors: Seigo Nakao, Daichi Imamura, Yoshihiko Ogawa, Atsushi Matsumoto, Katsuhiko Hiramatsu
  • Publication number: 20200410655
    Abstract: A method for building an image determination model that determines whether a print image is a good image or a failure image includes a step of determining whether the print image is a high-density image or a low-density image; a step of generating teaching data by combining pseudo-failure data with to-be-combined image data, based on a result of the determination; and a step of performing machine learning. Regarding the combining of the pseudo-failure data, for a print image determined to be the high-density image, low-density pseudo-failure data is combined with to-be-combined image data, and for a print image determined to be the low-density image, high-density pseudo-failure data is combined with to-be-combined image data.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 31, 2020
    Inventors: Atsushi IMAMURA, Kazuhiro KITAMURA
  • Publication number: 20200396016
    Abstract: A terminal apparatus includes circuitry and a transmitter. The circuitry, in operation, generates a reference signal using a cyclic shift value and an orthogonal sequence, which are associated with each other. The orthogonal sequence is one of two orthogonal sequences corresponding to a first orthogonal sequence [1, 1] and a second orthogonal sequence [1, ?1]. The cyclic shift value is one of 12 cyclic shift values ranging from 0 to 11. The transmitter, in operation, transmits the reference signal multiplexed with a data signal. Two of the cyclic shift values having a difference of 6 are respectively associated with the two orthogonal sequences.
    Type: Application
    Filed: August 27, 2020
    Publication date: December 17, 2020
    Inventors: Yoshihiko Ogawa, Akihiko Nishio, Takashi Iwai, Seigo Nakao, Daichi Imamura, Atsushi Sumasu
  • Publication number: 20200389913
    Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Inventors: Atsushi SUMASU, Shozo OKASAKA, Shinsuke TAKAOKA, Seigo NAKAO, Daichi IMAMURA
  • Patent number: 10863448
    Abstract: Provided is a communication device, which is enabled to improve the throughput of a communication system by reducing the difference of a transmission power between an SCCH and an SDCH thereby to satisfy the required quality of a PAPR. In this device, an MCS selection unit (111) of a transmission unit (110) decides, with reference to a CQI lookup table, an MCS pattern (MCS1) of the SDCH, an MCS pattern (MCS2) of the SCCH and information (multiplex information) on multiplex positions on the time axes of those two channels, on the basis of the CQI information. On the basis of the MCS2 and the MCS1, encoding modulation units (112 and 113) perform encoding and modulating operations. According to the multiplex information, a channel multiplexing unit (114) time-division multiplexes the SCCH and the SDCH thereby to generate a transmission signal.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: December 8, 2020
    Assignee: Optis Wireless Technology, LLC
    Inventors: Sadaki Futagi, Daichi Imamura, Atsushi Matsumoto, Takashi Iwai
  • Publication number: 20200378334
    Abstract: A structure of a combustion chamber for an engine includes: a crown surface of a piston; a combustion chamber ceiling surface formed on a cylinder head; and an ignition plug mounted on the combustion chamber ceiling surface, and including an ignition portion disposed in such a way as to face the combustion chamber. The crown surface of the piston includes a cavity which is recessed in a cylinder axis direction in a region including a position below the ignition portion of the ignition plug in a plan view from the cylinder axis direction. A rim portion of the cavity includes a guide portion, raised in the cylinder axis direction with respect to an inner region of the rim portion, interposing the ignition portion when the piston is at a compression top dead center, and configured to guide an air-fuel mixture within the combustion chamber to the ignition portion.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 3, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Satoshi IMAMURA, Masaki FUKUMA, Yasushi NAKAHARA, Atsushi INOUE, Kota MATSUMOTO, Yoshiharu UEKI, Michiharu KAWANO, Yuya HONDA, Kento ONISHI
  • Publication number: 20200378335
    Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a cylinder wall surface, a combustion chamber ceiling surface, and an ignition plug which includes an ignition portion. The crown surface of the piston includes: a cavity recessed in the cylinder axis direction; a parallel surface portion which is in parallel to a corresponding region on the combustion chamber ceiling surface at a position above the cylinder axis direction with a gap, when the piston is at a compression top dead center; and an inclined surface portion formed to continue to the parallel surface portion in such a way as to be directed to the ignition plug, when the piston is at a compression top dead center. The parallel surface portion and the corresponding region, in combination, constitute a squish flow generation portion generating a squish flow when the piston is lifted.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 3, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Satoshi IMAMURA, Masaki FUKUMA, Yasushi NAKAHARA, Atsushi INOUE, Kota MATSUMOTO, Yoshiharu UEKI, Michiharu KAWANO, Yuya HONDA, Kento ONISHI
  • Patent number: 10851702
    Abstract: A combustion chamber structure for an engine includes a combustion chamber where SI combustion by spark ignition and CI combustion by self-ignition are conducted. A crown surface includes a cavity recessed to have a bowl-shape, and a pair of raised portions. The cavity includes a bottom portion which is a lower region of the recessed part, the bottom portion having an outer circumferential edge which is circular in a top view. With a height of the raised portion relative to a height position of a deepest portion of the cavity being represented as H1 and a diameter of an outer circumferential edge of the bottom portion of the cavity being represented as D, H1/D as a ratio of the height H1 of the raised portion to the diameter D of the cavity is set to be in a range of 0.05 or more and 0.36 or less.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: December 1, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Satoshi Imamura, Masaki Fukuma, Yasushi Nakahara, Atsushi Inoue, Kota Matsumoto, Michiharu Kawano, Yuya Honda, Futa Nishi
  • Patent number: 10836373
    Abstract: A control system for hybrid vehicles configured to improve energy efficiency by controlling a speed difference in a coupling. The hybrid vehicle comprises: a power split mechanism; an engine connected to a first rotary element; a first motor connected to the second rotary element; a second motor connected to the third rotary element; drive wheels to which a torque is delivered from the third rotary element; and a coupling comprising a drive member and a driven member. A controller is configured to change the speed difference in the coupling, and to change a speed or a torque of at least one of the first motor and the second motor after changing the speed difference in the coupling.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: November 17, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuya Imamura, Atsushi Tabata
  • Publication number: 20200359423
    Abstract: A radio performs random access by receiving control information and grouping a predetermined number of sequences that are generated from a plurality of base sequences into a plurality of groups by partitioning the predetermined number of sequences. At least one of the groups is associated with a first respective range of data amounts and a first respective range of reception qualities. Sequences generated from a common base sequence are arranged in an increasing order of respective cyclic shifts associated with the sequences. A sequence is randomly selected from a plurality of sequences contained in one group of the plurality of groups. A position at which the predetermined number of sequences are partitioned is determined based on the control information. A number of sequences contained in each of the plurality of groups varies in accordance with the control information.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: Daichi Imamura, Sadaki Futagi, Atsushi Matsumoto, Takashi Iwai, Tomofumi Takata
  • Patent number: 10826668
    Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: November 3, 2020
    Assignee: Panasonic Corporation
    Inventors: Atsushi Matsumoto, Daichi Imamura, Takashi Iwai, Yoshihiko Ogawa, Tomofumi Takata, Katsuhiko Hiramatsu