Patents by Inventor Hiroki Okamura
Hiroki Okamura 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).
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Publication number: 20240089775Abstract: A terminal including: a reception unit that receives a reference signal periodically transmitted from a network; a transmission unit that transmits a measurement result of the reference signal; and a control unit that determines whether or not to assume a reception of at least a part of the reference signal based on whether or not a specific condition is satisfied.Type: ApplicationFiled: January 26, 2021Publication date: March 14, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Satoshi Nagata, Masaya Okamura, Tomoya Ohara
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Publication number: 20240089762Abstract: A terminal comprises: a reception unit that receives a reference signal used for a purpose other than a measurement related to a radio link management; and a control unit that performs the measurement related to the radio link management using the reference signal.Type: ApplicationFiled: January 26, 2021Publication date: March 14, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Satoshi Nagata, Masaya Okamura, Tomoya Ohara
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Publication number: 20240090012Abstract: A terminal comprises: a reception unit that receives a reference signal used for a purpose other than a measurement related to a radio resource management; and a control unit that performs the measurement related to the radio resource management using the reference signal.Type: ApplicationFiled: January 26, 2021Publication date: March 14, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Satoshi Nagata, Masaya Okamura, Tomoya Ohara
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Publication number: 20240089764Abstract: A terminal comprises: a transmission unit that transmits a reference signal used for a purpose other than a measurement related to a reception quality in a physical layer; and a control unit that assumes the measurement related to the reception quality in the physical layer is performed using the reference signal.Type: ApplicationFiled: January 26, 2021Publication date: March 14, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Satoshi Nagata, Masaya Okamura, Tomoya Ohara
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Patent number: 10098583Abstract: In a sleep quality estimation device, a respiration sensor detects the respiratory waveform of a subject. A sleep stage estimation unit estimates the sleep stage of the subject during sleep based on the respiratory waveform detected by the respiration sensor. In a sleep rhythm model database, models associated with the appearance probability of ?-wave for the sleep stage during sleep are recorded. A sleep quality estimation unit estimates the appearance time of ?-wave of the subject during sleep based on the sleep stage of the subject estimated by the sleep stage estimation unit and the models associated with the appearance probability of ?-wave for the sleep stage recorded in the sleep rhythm model database, and estimates the sleep quality of the subject based on the appearance time of ?-wave.Type: GrantFiled: February 24, 2012Date of Patent: October 16, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhide Shigeto, Hiroki Okamura, Hirokazu Kikuchi
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Patent number: 9841065Abstract: A wet friction disk that can achieve a further reduction in the drag torque, which includes a ring-shaped core plate having a wave shape in a circumferential direction thereof, a friction member disposed on a principal surface of the core plate so as to being substantially shaped into a ring with a plurality of oil grooves, and the oil grooves each have a shape with a groove width that is narrowed from an inner circumference side toward an outer circumference side of the core plate.Type: GrantFiled: March 23, 2015Date of Patent: December 12, 2017Assignee: AISIN KAKO KABUSHIKI KAISHAInventor: Hiroki Okamura
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Patent number: 9291211Abstract: In a wet friction material, a plurality of segment pieces is disposed at both sides of inter-segment grooves. The segment pieces are composed of first segment pieces and second segment pieces. The first segment piece has at least two inner peripheral recesses formed on an inner periphery thereof and at least two outer peripheral recesses formed on an outer periphery thereof. The outer periphery of the first segment piece has a short dimension. The second segment piece has at least two inner peripheral recesses formed on an inner periphery thereof and at least two outer peripheral recesses formed on an outer periphery thereof. The outer periphery of the second segment piece has a long dimension.Type: GrantFiled: May 19, 2014Date of Patent: March 22, 2016Assignee: AISIN KAKO KABUSHIKI KAISHAInventor: Hiroki Okamura
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Publication number: 20150275985Abstract: A wet friction disk that can achieve a further reduction in the drag torque, which includes a ring-shaped core plate having a wave shape in a circumferential direction thereof, a friction member disposed on a principal surface of the core plate so as to being substantially shaped into a ring with a plurality of oil grooves, and the oil grooves each have a shape with a groove width that is narrowed from an inner circumference side toward an outer circumference side of the core plate.Type: ApplicationFiled: March 23, 2015Publication date: October 1, 2015Applicant: AISIN KAKO KABUSHIKI KAISHAInventor: Hiroki OKAMURA
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Publication number: 20150038865Abstract: In a sleep quality estimation device, a respiration sensor detects the respiratory waveform of a subject. A sleep stage estimation unit estimates the sleep stage of the subject during sleep based on the respiratory waveform detected by the respiration sensor. In a sleep rhythm model database, models associated with the appearance probability of ?-wave for the sleep stage during sleep are recorded. A sleep quality estimation unit estimates the appearance time of ?-wave of the subject during sleep based on the sleep stage of the subject estimated by the sleep stage estimation unit and the models associated with the appearance probability of ?-wave for the sleep stage recorded in the sleep rhythm model database, and estimates the sleep quality of the subject based on the appearance time of ?-wave.Type: ApplicationFiled: February 24, 2012Publication date: February 5, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhide Shigeto, Hiroki Okamura, Hirokazu Kikuchi
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Publication number: 20140346003Abstract: In a wet friction material, a plurality of segment pieces is disposed at both sides of inter-segment grooves. The segment pieces are composed of first segment pieces and second segment pieces. The first segment piece has at least two inner peripheral recesses formed on an inner periphery thereof and at least two outer peripheral recesses formed on an outer periphery thereof. The outer periphery of the first segment piece has a short dimension. The second segment piece has at least two inner peripheral recesses formed on an inner periphery thereof and at least two outer peripheral recesses formed on an outer periphery thereof. The outer periphery of the second segment piece has a long dimension.Type: ApplicationFiled: May 19, 2014Publication date: November 27, 2014Applicant: AISIN KAKO KABUSHIKI KAISHAInventor: Hiroki OKAMURA
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Publication number: 20140236386Abstract: A driving assistance apparatus includes a plurality of model candidates that define a correspondence relationship between a driving operation performed by a driver and information indicating relative positions of a moving body detected on a periphery of a host vehicle and the host vehicle. The driving assistance apparatus determines a model to be used from among the plurality of model candidates on the basis of information relating to the detected moving body, and executes driving assistance on the basis of the determined model and a driving operation performed by the driver following detection of the moving body. Preferably, the determined model can be updated on the basis of the determined model and the driving operation performed by the driver following detection of the moving body.Type: ApplicationFiled: September 22, 2011Publication date: August 21, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shintaro Yoshizawa, Hirokazu Kikuchi, Hiroki Okamura, Takuya Yamanashi, Quy Hung Nguyen Van
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Patent number: 8647253Abstract: A drowsiness level detection section detects a drowsiness level of an individual person. A sleep depth level control section controls the sleep depth of the individual person based on the detected drowsiness level. The sleep depth level control section executes a first sleep control, in which the sleep depth level of the individual person is maintained at a predetermined sleep depth level below a maximum sleep depth level, if the detected drowsiness level is equal to or below a predetermined threshold.Type: GrantFiled: March 6, 2009Date of Patent: February 11, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisashi Iizuka, Hiroki Okamura
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Patent number: 8576081Abstract: Provided are a physiological condition estimation device and a vehicle control device capable of preventing an error in the operation of an apparatus, such as a vehicle, and improving the safety of the operation of the apparatus. The physiological condition estimation device includes an eye-open time acquiring unit that acquires the eye-open time of the driver, a variation calculating unit that acquires a variation in the eye-open time acquired by the eye-open time acquiring unit, and a drowsiness predicting unit that determines the physiological condition of the driver on the basis of the variation in the eye-open time acquired by the variation calculating unit. In this way, since the physiological condition is determined on the basis of the variation in the eye-open time, it is possible to detect a slight reduction in the arousal level and estimate a significant reduction in the arousal level to a value that will cause an error in the driving of the vehicle in the future.Type: GrantFiled: January 20, 2010Date of Patent: November 5, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshiyuki Hatakeyama, Yutaka Hirano, Hiroki Okamura
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Patent number: 8157075Abstract: Provided is a wet friction material that includes a ring shaped flat metal core and a plurality of segment-type friction material substrates joined onto one or both of surfaces of the ring shaped flat metal core with an adhesive and spaced apart along an entire circumference of the ring shaped flat metal core to form a plurality of oil grooves extending in a radial direction of the core metal by a clearance between adjacent ones of the above segment pieces. One or both of outer peripheral corner portions of each of the plurality of segment-type friction material substrates is chamfered to form a chamfered part such that a width of the oil grooves adjacent the chamfered part of the corner portions is larger than a width of a thinnest portion of the above plurality of the oil grooves.Type: GrantFiled: August 19, 2008Date of Patent: April 17, 2012Assignee: Aisin Kako Kabushiki KaishaInventors: Hiroki Okamura, Yoshihito Fujimaki
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Publication number: 20110313259Abstract: Provided are a physiological condition estimation device and a vehicle control device capable of preventing an error in the operation of an apparatus, such as a vehicle, and improving the safety of the operation of the apparatus. The physiological condition estimation device includes an eye-open time acquiring unit that acquires the eye-open time of the driver, a variation calculating unit that acquires a variation in the eye-open time acquired by the eye-open time acquiring unit, and a drowsiness predicting unit that determines the physiological condition of the driver on the basis of the variation in the eye-open time acquired by the variation calculating unit. In this way, since the physiological condition is determined on the basis of the variation in the eye-open time, it is possible to detect a slight reduction in the arousal level and estimate a significant reduction in the arousal level to a value that will cause an error in the driving of the vehicle in the future.Type: ApplicationFiled: January 20, 2010Publication date: December 22, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshiyuki Hatakeyama, Yutaka Hirano, Hiroki Okamura
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Patent number: 7919165Abstract: In a wet-type friction material, a ring-shaped friction material substrate is compressed and fixed on a surface of a core metal by heat-pressing by a manufacturing metal mold. At the same time, a taper of an angle ? corresponding to a taper at an outer peripheral side of an upper mold is provided on an outer peripheral side of the ring-shaped friction material substrate. Thus, the taper is formed such that a thickness in a radial direction of the ring-shaped friction material substrate becomes smaller from a middle point toward an outer peripheral edge.Type: GrantFiled: October 2, 2007Date of Patent: April 5, 2011Assignee: Aisin Kako Kabushiki KaishaInventors: Masato Hasegawa, Hiroki Okamura
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Publication number: 20110021866Abstract: A drowsiness level detection section detects a drowsiness level of an individual person. A sleep depth level control section controls the sleep depth of the individual person based on the detected drowsiness level. The sleep depth level control section executes a first sleep control, in which the sleep depth level of the individual person is maintained at a predetermined sleep depth level below a maximum sleep depth level, if the detected drowsiness level is equal to or below a predetermined threshold.Type: ApplicationFiled: March 6, 2009Publication date: January 27, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisashi Iizuka, Hiroki Okamura
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Publication number: 20090050434Abstract: In a wet friction material, to be able to obtain a more significant drag torque reduction effect certainly even in case of a specification that there is no lubricating oil supply from an inner peripheral side or in case that a stirred torque increases by generating oil retained at an outer periphery. In case of the specification (without axis core lubrication) that there is no lubricating oil (ATF) supply from the inner peripheral side of the wet friction material, that is, in case that there is the lubricating oil supply only from the outer peripheral side, in segment-type friction materials 1, 1A and 1C, by making R processing or chamfering processing to one or both corner portions of the outer periphery of segment pieces 3, 3A, 3B and 3C, it can obtain a significant drag torque reduction effect by a peeling effect that ATF runs from the processing portion into front surfaces of the segment pieces 3, 3A, 3B and 3C and goes into between a counterpart material.Type: ApplicationFiled: August 19, 2008Publication date: February 26, 2009Applicant: AISIN KAKO KABUSHIKI KAISHAInventors: Hiroki OKAMURA, Yoshihito Fujimaki
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Publication number: 20080199641Abstract: In a wet-type friction material, a ring-shaped friction material substrate is compressed and fixed on a surface of a core metal by heat-pressing by a manufacturing metal mold. At the same time, a taper of an angle ? corresponding to a taper at an outer peripheral side of an upper mold is provided on an outer peripheral side of the ring-shaped friction material substrate. Thus, the taper is formed such that a thickness in a radial direction of the ring-shaped friction material substrate becomes smaller from a middle point toward an outer peripheral edge.Type: ApplicationFiled: October 2, 2007Publication date: August 21, 2008Applicant: AISIN KAKO KABUSHIKI KAISHAInventors: Masato Hasegawa, Hiroki Okamura
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Patent number: 6776276Abstract: A wet friction material and its manufacturing method are provided. The wet friction material has a substrate having a surface and a very superficial layer. The very superficial layer is provided on the surface of the substrate and contains resin and fibers. The resin and the fibers are heated by one of a laser beam, a heating plate and a heating roller so as to thermally change the very superficial layer in a short period of time. Such manufacturing method is capable of evenly carbonizing the resin and the fibers of the very superficial layer of a friction surface of the wet friction material so as to flexibly deal with a variety of size of products.Type: GrantFiled: October 25, 2002Date of Patent: August 17, 2004Assignee: Aisin Kako Kabushiki KaishaInventors: Hiroki Okamura, Masato Suzuki, Yoshihito Fujimaki