Patents by Inventor Keisuke Takeuchi

Keisuke Takeuchi 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: 8521338
    Abstract: A vehicle control system capable of improving drivability by reflecting driving environment and driving preference accurately on driving characteristics. The vehicle control system is configured to change an index for setting driving characteristics of the vehicle. When accelerations Gx and Gy are changed, a sportiness index is changed in a different manner depending on a detail of an operation for changing accelerations Gx and Gy executed by a driver, thereby reflecting the driving preference of the driver appearing on the operation can be reflected on sportiness of the vehicle.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: August 27, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keisuke Takeuchi, Toshio Tanahashi, Ken Koibuchi, Kaiji Itabashi, Shin Noumura, Hiroyuki Hanamura, Yoji Takanami, Norimi Asahara
  • Patent number: 8503295
    Abstract: A base station is connected to wired and wireless networks to send a call that is received from the wired network to the wireless network at a predetermined quality of service (QoS), select one or more combinations of a set of modulation and coding scheme, and a radio resource amount that are associated with a QoS set in a newly incoming call, determine the radio resource amount that is equal to or less than a amount of the unassigned radio resources, assign, to the newly incoming call, the combination that is associated with the determined radio resource amount and the QoS set in the newly incoming call, reduce the radio resources assigned to the ongoing call without changing the QoS, and assign, to the newly incoming call, an amount of radio resources released from the ongoing call and modulation and coding scheme associated with this released radio resource amount.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: August 6, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Keisuke Takeuchi, Rintaro Katayama, Tomonori Yamamoto, Koki Uwano
  • Publication number: 20130184934
    Abstract: A vehicle control system includes: an acceleration acquisition unit that detects or estimates an acceleration of a vehicle; and a control unit that is configured to change a running characteristic, which includes at least any one of a driving force characteristic, shift characteristic, steering characteristic and suspension characteristic of the vehicle, on the basis of the acceleration, wherein the control unit is configured to relatively delay a change of the running characteristic for decreasing quickness of behavior of the vehicle with respect to a change of the running characteristic for increasing quickness of behavior of the vehicle, and is configured to limit a change of the running characteristic when a jerk, which is a time differential value of the acceleration, is larger than a limit determination threshold as compared with when the jerk is smaller than or equal to the limit determination threshold.
    Type: Application
    Filed: September 13, 2011
    Publication date: July 18, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Takeuchi, Yoji Kanehara, Toshio Tanahashi, Yoshimitsu Agata, Tomohide Kawasaki, Shin Noumura
  • Patent number: 8477682
    Abstract: Conventionally, different HARQ processes 801 and 802 (subframes T1 and T2) transmit data packets B and D, respectively. One data packet corresponds to one process and is retransmitted as necessary one by one on a process basis, degrading the usage efficiency of frequency and time resources. To solve this problem, downlink data packets B and D, when needed to be retransmitted, are spatially multiplexed in the different HARQ processes 801 and 802. The data packets are simultaneously retransmitted to the same terminal as process 805 (subframe T3).
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: July 2, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Keisuke Takeuchi, Rintaro Katayama, Tomonori Yamamoto, Koki Uwano
  • Publication number: 20130166101
    Abstract: In a vehicle control apparatus that changes the travel characteristic of a vehicle on the basis of a change of the acceleration of the vehicle, when the travel characteristic is to be changed because the acceleration has changed, the amount of change of the travel characteristic to be changed is adjusted on the basis of the pre-change travel characteristic that is present immediately prior to the change of the acceleration.
    Type: Application
    Filed: September 12, 2011
    Publication date: June 27, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shin Noumura, Ken Koibuchi, Kaiji Itabashi, Toshio Tanahashi, Keisuke Takeuchi
  • Publication number: 20130166121
    Abstract: A vehicle control system includes: a controller that configured to obtain an index on the basis of a running condition of a vehicle and that configured to vary a running characteristic of the vehicle on the basis of the index, wherein the controller is configured to relatively delay a variation in the index in response to a variation in the running condition when the variation in the index decreases quickness of a behavior of the vehicle as compared with when the variation in the index increases the quickness of the behavior of the vehicle, and to correct the running characteristic on the basis of the index so that energy efficiency of a driving force source of the vehicle varies within a predetermined range depending on control over power output from the driving force source.
    Type: Application
    Filed: September 14, 2011
    Publication date: June 27, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Takeuchi, Toshio Tanahashi, Yoshimitsu Agata, Ken Koibuchi, Kaiji Itabashi, Shin Noumura
  • Patent number: 8473154
    Abstract: A vehicle control system, which is configured to obtain an index on the basis of a running condition of a vehicle and to change at least any one of a driving force control characteristic and a vehicle body support characteristic of a suspension mechanism in response to the index, is configured to acquire information associated with a friction coefficient of a road surface on which the vehicle runs, and to correct the at least any one of the driving force control characteristic and the vehicle body support characteristic, which is changed in response to the index, on the basis of the information associated with the friction coefficient of the road surface.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: June 25, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shin Noumura, Ken Koibuchi, Kaiji Itabashi, Keisuke Takeuchi, Toshio Tanahashi
  • Publication number: 20130151074
    Abstract: A vehicle control system includes a control portion configured to determine a single parameter based on a running condition of a vehicle, and determine control amounts for a plurality of actuators provided in the vehicle based on the parameter. A relation of the control amount for each of the plurality of actuators to the parameter is predetermined. The control portion is configured to, when the parameter is determined, determine the control amounts for the respective actuators based on the parameter, and control the actuators based on the determined control amounts.
    Type: Application
    Filed: August 29, 2011
    Publication date: June 13, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Takeuchi, Youji Kanehara, Toshio Tanahashi, Yoshimitsu Agata, Tomohide Kawasaki, Ken Koibuchi, Kaiji Itabashi, Shin Noumura
  • Publication number: 20120281569
    Abstract: Timing division multiplexing is conducted between the cells to avoid intercell interference. Transmission timing in a time slot pattern has a given interval. A base station determines the transmission timing based on measured uplink interference power. For example, an uplink time slot pattern in which the measured uplink interference power is smaller is selected. A downlink time slot pattern is assigned so that a response to HARQ is returned at that timing. If traffic is busy, additional time slot pattern may be assigned. In determination of the traffic volume, for example, the queued buffer size, the number of connected terminals, or the number of connections to a higher-level device can be used. Assignment timing can be an initial setup time, or a fluctuation detection time of a channel which can be realized by collection of report information on a downlink communication quality, periodic monitor of uplink interference information.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Applicant: HITACHI, LTD.
    Inventors: Tomonori YAMAMOTO, Rintaro KATAYAMA, Keisuke TAKEUCHI
  • Publication number: 20120221228
    Abstract: In a vehicle control system that obtains an index based on a running condition of a vehicle and changes a running characteristic of the vehicle according to the index, includes index setting means for making a change in the index in response to a change in the running condition in a direction toward crisp running of the vehicle, faster than a change in the index in response to a change in the running condition in such a direction as to reduce crispness with which the vehicle is running.
    Type: Application
    Filed: August 12, 2010
    Publication date: August 30, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shin Noumura, Ken Koibuchi, Kaiji Itabashi, Toshio Tanahashi, Keisuke Takeuchi, Hiroyuki Hanamura, Yoji Takanami, Norimi Asahara
  • Publication number: 20120179342
    Abstract: In a control device for a vehicle that controls a revolution speed of a drive power source or a gear ratio of a transmission coupled to an output side of the drive power source in the vehicle equipped with the drive power source and the transmission, the control device is configured to determine an index that is based on a running state of the vehicle, and to control a required revolution speed of the drive power source or a required gear ratio for the transmission on the basis of the index.
    Type: Application
    Filed: August 17, 2010
    Publication date: July 12, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shin Noumura, Kaiji Itabashi, Ken Koibuchi, Toshio Tanahashi, Keisuke Takeuchi, Hiroyuki Hanamura, Yoji Takanami, Norimi Asahara
  • Patent number: 8218769
    Abstract: An encrypted communication system is provided, in which an encryption key for use in encrypted communication and settings information for the encrypted communication are distributed to each of a plurality of communication devices performing encrypted communication within a group, and in which traffic generated by distributing the encryption key and the like can be reduced. In the encrypted communication system according to the present invention, information including a key for use in the intra-group encrypted communication or a seed which generates the key is distributed to the communication devices belonging to the group that are participating (e.g., logged in) in the intra-group encrypted communication.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: July 10, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Osamu Takata, Tadashi Kaji, Takahiro Fujishiro, Kazuyoshi Hoshino, Keisuke Takeuchi
  • Patent number: 8205074
    Abstract: In a data communication method and a data communication system, a session control message designating a destination server with identification information unique to application is transferred to the destination via a session management server. When an application program or encrypted communication software on a client issues a connection request designating a destination with identification information unique to application, the client or the session management server automatically converts the identification information into a desired resource identifier identifiable a domain to thereby determine a domain as the destination of the received connection request message.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: June 19, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyoshi Hoshino, Keisuke Takeuchi, Osamu Takata, Tadashi Kaji, Takahiro Fujishiro
  • Publication number: 20120143398
    Abstract: In a vehicle control system, an index used to set a running characteristic of a vehicle is obtained based on a running condition of the vehicle. A change of the index that makes behavior of the vehicle crisper is more likely to occur than a change of the index that makes the behavior of the vehicle milder. When it is determined that the vehicle is in a turning condition, the change of the index or a change of the miming characteristic based on the index is less likely to occur than when it is determined that the vehicle is not in the turning condition.
    Type: Application
    Filed: August 17, 2010
    Publication date: June 7, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Takeuchi, Toshio Tanahashi, Hiroyuki Hanamura, Shin Noumura, Ken Koibuchi, Kaiji Itabashi, Yoji Takanami, Norimi Asahara
  • Publication number: 20120143399
    Abstract: A vehicle control system obtains an index indicating a running condition of a vehicle on the basis of a vehicle parameter indicating a motion of the vehicle and then sets a running characteristic of the vehicle in accordance with the index. The vehicle control system includes a noise reduction unit that is configured to obtain the index on the basis of the vehicle parameter of which a fluctuating component that fluctuates because of a driver's driving operation or the influence of a running road surface.
    Type: Application
    Filed: August 17, 2010
    Publication date: June 7, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shin Noumura, Ken Koibuchi, Keisuke Takeuchi, Toshio Tanahashi, Hiroyuki Hanamura, Yoji Takanami, Norimi Asahara, Kaiji Itabashi
  • Publication number: 20120136506
    Abstract: A vehicle control system capable of improving drivability by reflecting driving environment and driving preference accurately on driving characteristics. The vehicle control system is configured to change an index for setting driving characteristics of the vehicle. When accelerations Gx and Gy are changed, a sportiness index is changed in a different manner depending on a detail of an operation for changing accelerations Gx and Gy executed by a driver, thereby reflecting the driving preference of the driver appearing on the operation can be reflected on sportiness of the vehicle.
    Type: Application
    Filed: August 18, 2010
    Publication date: May 31, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Takeuchi, Toshio Tanahashi, Ken Koibuchi, Kaiji Itabashi, Shin Noumura, Hiroyuki Hanamura, Yoji Takanami, Norimi Asahara
  • Publication number: 20120129527
    Abstract: When a femto cell base station detects an intense uplink interference, the femto cell base station autonomously extends the femto cell so as to raise a probability that a mobile terminal around the original femto cell may be connected to the femto cell base station. If the mobile terminal connects to the femto cell base station, the uplink interference is reduced and total throughput is improved. Additionally, if a resultant effect of interference reduction is low, the femto cell base station returns the mobile terminal, which is connected to the femto cell base station due to the extension of the femto cell, to the original connection destination. If an evaluative criterion meets a predetermined condition, the femto cell base station restores the extended femto cell to the original size. These actions prevent degradation of performance caused by concentration of the connections of mobile terminals to the femto cell base station.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 24, 2012
    Inventors: KEISUKE TAKEUCHI, Rintaro Katayama
  • Patent number: 8160022
    Abstract: A wireless access terminal, after handoff, adds channel quality information calculated in the wireless access terminal to a header of transmit data and transmits this data until a wireless base station succeeds in receiving at least one or more packets. The wireless base station, when having succeeded in receiving a packet for the first time after the handoff, extracts the channel quality information from a received header to initialize channel quality information inside the wireless base station. Subsequently, the wireless base station autonomously updates the channel quality information in response to success or failure of packet reception and controls the transmission rate.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: April 17, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Shiro Mazawa, Toshiyuki Saito, Keisuke Takeuchi, Rintaro Katayama
  • Patent number: 8150445
    Abstract: Provided is a wireless base station comprising: a power control unit, a reference information acquisition unit and a reference information storing unit, wherein the wireless base station comprises a first control signal receiving unit for receiving a first uplink control signal used by a mobile station connected to the wireless base station and for requesting the power control unit to control the transmission, and a second control signal receiving unit for receiving a second uplink control signal used by a mobile station connected to the neighbor base station and for requesting the power control unit to control the transmission power, and wherein the power control unit controls the transmission power of the downlink signal based on the request to control the transmission power from the first control signal receiving unit and the request to control the transmission power from the second control signal receiving unit.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: April 3, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Keisuke Takeuchi, Kenzaburo Fujishima, Rintaro Katayama, Koki Uwano
  • Publication number: 20120062375
    Abstract: A control system for a vehicle, includes: a controller that is configured to obtain an index on the basis of a running condition of the vehicle, to vary a running characteristic of the vehicle on the basis of the index, and to vary details output from an effect producing device, which applies a stimulus to at least part of five senses of a driver of the vehicle, on the basis of the index, wherein when a variation in the running characteristic because of a variation in the index decreases, quickness of a behavior of the vehicle, the variation in the index in response to a variation in the running condition is relatively delayed, as compared with when the variation in the running characteristic because of the variation in the index increases quickness of the behavior of the vehicle.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 15, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke TAKEUCHI, Toshio TANAHASHI, Shinichi SANO, Yoshimitsu AGATA, Toshihiro YAMAZAKI, Shin NOUMURA