Patents by Inventor Takahiro Izuno

Takahiro Izuno 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: 20210118170
    Abstract: A tiptoe position estimating device includes: a camera configured to capture an image of an interior of a vehicle; and a human body information acquisition unit configured to acquire, from a captured image obtained by capturing an image of a person seated on a seat in the interior by the camera, position information of skeleton points at a plurality of positions of a body of the person. The human body information acquisition unit is configured to acquire thigh information which is position information of a skeleton point of a thigh of the person, and lower leg information which is position information of a skeleton point of a lower leg of the person. The human body information acquisition unit includes a tiptoe position estimating part configured to estimate a tiptoe position of a foot of the person based on the acquired thigh information and the acquired lower leg information.
    Type: Application
    Filed: October 16, 2020
    Publication date: April 22, 2021
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki FUJII, Takahiro IZUNO, Masahiro TAKEUCHI
  • Patent number: 10196025
    Abstract: A seating detection method includes: detecting whether a seat belt sensor in a vehicle seat is in an ON state or an OFF state; detecting whether a pressure sensitive sensor in a seat skin constituting a seating surface is in an ON state or an OFF state; and determining a foreign object insertion state in which a foreign object is inserted between the seating surface and a child seat based on whether the seat belt sensor is in the ON state or the OFF state and whether the pressure sensitive sensor is in the ON state or the OFF state. When the pressure sensitive sensor is changed from the ON state to the OFF state in a state in which the seat belt sensor is maintained in the ON state after the seat belt sensor is changed to the ON state, it is determined as the foreign object insertion state.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: February 5, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Fujii, Takahiro Izuno
  • Patent number: 10166886
    Abstract: An occupant detection method includes detecting a load applied to a seat for a vehicle, detecting that an occupant is seated at the seat, holding a local maximum of the load which is detected when the occupant becomes seated, setting a standard value of the load in a state in which the occupant is seated at the seat, and estimating a body height of the occupant on the basis of a comparison between the local maximum of the load and the standard value of the load, wherein when the body height of the occupant is estimated, the larger a difference between the local maximum of the load and the standard value of the load is, the higher body height of the occupant is estimated.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: January 1, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Fujii, Isao Honda, Takahiro Izuno
  • Patent number: 10150385
    Abstract: An occupant discrimination system of a vehicle seat includes a load detecting portion disposed on a lower side of a seat and detecting a load acting on the seat; an occupant discrimination portion discriminating a state of an occupant among a no occupant state, adult seated state, and child seat fixed states based at least on a load detected from the load detecting portion and a load continuation duration.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: December 11, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshiaki Tomatsu, Isao Honda, Shintaro Nakaya, Takahiro Izuno
  • Patent number: 9963045
    Abstract: An occupant sensing method includes steps of: sensing installation of a child seat on a seat of a vehicle; storing a detection value of a load sensor which is provided to be attached to the seat and detects an input load as a first load value, when the installation of the child seat is sensed; storing a detection value of the load sensor as a second load value when a predetermined time period has elapsed from a time point at which the installation of the child seat is sensed; and estimating a load change amount at the time of getting on/off which is a change amount of a load that is generated as the occupant gets on/off the child seat, based on a difference value between the first load value and the second load value.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: May 8, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Fujii, Isao Honda, Takahiro Izuno
  • Publication number: 20170369017
    Abstract: A seating detection method includes: detecting whether a seat belt sensor in a vehicle seat is in an ON state or an OFF state; detecting whether a pressure sensitive sensor in a seat skin constituting a seating surface is in an ON state or an OFF state; and determining a foreign object insertion state in which a foreign object is inserted between the seating surface and a child seat based on whether the seat belt sensor is in the ON state or the OFF state and whether the pressure sensitive sensor is in the ON state or the OFF state. When the pressure sensitive sensor is changed from the ON state to the OFF state in a state in which the seat belt sensor is maintained in the ON state after the seat belt sensor is changed to the ON state, it is determined as the foreign object insertion state.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 28, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki FUJII, Takahiro Izuno
  • Publication number: 20170232868
    Abstract: An occupant detection method includes detecting a load acting on a seat for a vehicle with use of a load sensor provided at the seat, monitoring a seating sensor output outputted from a seating sensor forming a detection region at the seat, and determining that a child occupant is seated at a child restraint seat installed at the seat when a detection value of the load sensor is equal to or larger than a minimum value determining that an adult occupant is seated at the seat and equal to or smaller than a maximum value determining that the child occupant is seated at the child restraint seat, in a case where the seating sensor output indicates a state in which a seating load of an occupant is not applied to the detection region, the seating load corresponding to a load of the occupant while the occupant is seated.
    Type: Application
    Filed: December 14, 2016
    Publication date: August 17, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takahiro IZUNO, Hiroyuki FUJII, lsao HONDA
  • Patent number: 9707863
    Abstract: An occupant detection method includes detecting a load applied to a seat for a vehicle, determining whether or not an occupant is seated at the seat, calculating a load deviation value indicating deviation of the load, determining whether or not the deviation exists at the seat on the basis of the load deviation value, and estimating that a seating posture of the occupant is inclined in a direction in which the load is deviated in a case where it is determined that the deviation exists and that a stable state is established, the stable state corresponding to a state in which a difference between a first change amount in a first cycle and a second change amount in a second cycle is within a predetermined range.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: July 18, 2017
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Fujii, Isao Honda, Takahiro Izuno
  • Publication number: 20170129365
    Abstract: An occupant detection method includes detecting a load applied to a seat for a vehicle, determining whether or not an occupant is seated at the seat, calculating a load deviation value indicating deviation of the load, determining whether or not the deviation exists at the seat on the basis of the load deviation value, and estimating that a seating posture of the occupant is inclined in a direction in which the load is deviated in a case where it is determined that the deviation exists and that a stable state is established, the stable state corresponding to a state in which a difference between a first change amount in a first cycle and a second change amount in a second cycle is within a predetermined range.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 11, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki FUJII, Isao Honda, Takahiro Izuno
  • Publication number: 20170113573
    Abstract: An occupant detection method includes detecting a load applied to a seat for a vehicle, detecting that an occupant is seated at the seat, holding a local maximum of the load which is detected when the occupant becomes seated, setting a standard value of the load in a state in which the occupant is seated at the seat, and estimating a body height of the occupant on the basis of a comparison between the local maximum of the load and the standard value of the load, wherein when the body height of the occupant is estimated, the larger a difference between the local maximum of the load and the standard value of the load is, the higher body height of the occupant is estimated.
    Type: Application
    Filed: October 20, 2016
    Publication date: April 27, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki FUJII, Isao HONDA, Takahiro IZUNO
  • Publication number: 20170050537
    Abstract: An occupant sensing method includes steps of: sensing installation of a child seat on a seat of a vehicle; storing a detection value of a load sensor which is provided to be attached to the seat and detects an input load as a first load value, when the installation of the child seat is sensed; storing a detection value of the load sensor as a second load value when a predetermined time period has elapsed from a time point at which the installation of the child seat is sensed; and estimating a load change amount at the time of getting on/off which is a change amount of a load that is generated as the occupant gets on/off the child seat, based on a difference value between the first load value and the second load value.
    Type: Application
    Filed: August 15, 2016
    Publication date: February 23, 2017
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki FUJII, lsao HONDA, Takahiro IZUNO
  • Publication number: 20160375798
    Abstract: An occupant discrimination system of a vehicle seat includes: a load detecting portion disposed on a lower side of a seat and detecting a load acting on the seat; an occupant discrimination portion discriminating a state of an occupant among a no occupant, adult seated state, and child seat fixed states based on a load detected from the load detecting portion and a load continuation duration; and a door opening and closing detecting portion detecting an opening and closing state of a door, wherein the occupant discrimination portion changes the state transition condition from the no occupant or child seat fixed state to the adult seated state such that it is difficult to transition in a state in which the door is detected to be in an open state in comparison to a state in which the door is detected to be in a closed state.
    Type: Application
    Filed: June 24, 2016
    Publication date: December 29, 2016
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshiaki TOMATSU, Isao Honda, Shintaro Nakaya, Takahiro Izuno
  • Publication number: 20160371899
    Abstract: A seat-occupancy state detection device includes: a seat occupancy sensor that forms a pressure sensitive portion on a seat occupancy surface of a seat; a load sensor that detects a load applied to the seat occupancy surface; a seat-occupancy state determination unit that determines a seat occupancy state of an occupant on the seat, based on an ON/OFF state of the seat occupancy sensor and the load which is detected by the load sensor; and an abnormality determination unit that determines an occurrence of a first abnormality in which the ON state of the seat occupancy sensor is maintained, in a case where the seat occupancy sensor is in the ON state, and the load, which is detected by the load sensor, is equal to or lower than a first threshold value indicating an unloaded state.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 22, 2016
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki Fujii, Isao Honda, Takahiro Izuno
  • Publication number: 20160368398
    Abstract: A seat-occupancy state detection device includes: a seat occupancy sensor forming a pressure sensitive portion on a seat occupancy surface of a seat; a load sensor detecting a load applied to the seat occupancy surface; and a seat-occupancy state determination unit determining a seat occupancy state based on an ON/OFF state of the seat occupancy sensor and the load, wherein the seat-occupancy state determination unit includes a seat non-occupancy state determination section determining a seat non-occupancy state in a case where the seat occupancy sensor enters an OFF state and the load is equal to or lower than a first threshold value, and a threshold-value setting section setting a threshold value of the load, which is used in determination of the seat non-occupancy state, to a higher value, as duration increases after the seat occupancy sensor enters the OFF state.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 22, 2016
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki FUJII, Isao HONDA, Takahiro IZUNO
  • Patent number: 9440608
    Abstract: A seat passenger determination apparatus includes: a first determination processing unit configured to determine a passenger is not seated on a vehicle seat by having gotten out of the vehicle and transfer the mode to a not-seated recognition mode when a load variation width detected by a load detection apparatus falls within a first threshold value in a state in which a non-fastened state of a seatbelt is detected; and a second determination processing unit configured to determine the passenger is not seated on the vehicle seat by having gotten out of the vehicle and transfer the mode to the not-seated recognition mode when the load variation width detected by the load detection apparatus falls within a second threshold value which is larger than the first threshold value during a predetermined time when the fact that the seatbelt has changed from the fastened state to the non-fastened state is detected.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: September 13, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Fujii, Takahiro Izuno, Isao Honda, Yoshiaki Tomatsu, Yusuke Takahashi
  • Patent number: 9132772
    Abstract: A seat passenger determination apparatus includes: a door closing timing detector configured to detect door closing timing after having gotten out of the vehicle directly or indirectly; a counter unit configured to start counting when the load detected by the load detector falls within a threshold value and reset the count when the load is deviated from the threshold value; a determination processing unit configured to determine that no passenger is seated on the vehicle seat because the passenger has gotten out, and transfer the mode to the not-seated recognition mode when the state in which the load within the predetermined threshold value continues for a predetermined time is detected by the counter unit; and a count restricting unit configured to stop the counting process performed by the counter unit temporarily when the door-closed state is detected by the door closing timing detector during the determination by the determination processing unit.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: September 15, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Fujii, Takahiro Izuno, Isao Honda, Yoshiaki Tomatsu, Yusuke Takahashi
  • Patent number: 8955908
    Abstract: A seat load detection apparatus includes: a load detector detecting part of a load acting on a vehicle seat which is capable of changing the posture of a seatback forward from the first stage position as a most upright position of a seatable position to the forwardly inclined position which is a forwardly inclined position on which the passenger cannot be seated; a load body determination unit determining a load body acting on the vehicle seat on the basis of a detected load detected by the load detector; a seat posture detector detecting the forwardly inclined position of the seatback; and a state determination unit determining the state change of the vehicle seat on the basis of the variation of the detected load and restrict the determination of the state change of the vehicle seat on the basis of an output from the seat posture detector.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 17, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki Fujii, Takahiro Izuno, Isao Honda, Yoshiaki Tomatsu, Yusuke Takahashi
  • Patent number: 8892313
    Abstract: In a seatbelt warning apparatus, a control unit performs a transition process configured to transfer the mode to a baggage recognition mode on the condition that a load detection unit detects a load larger than a first load and smaller than a second load continuously for a preset time in the not-seated recognition mode, and to the not-seated recognition mode on the condition that the load detection unit detects a load smaller than a predetermined load continuously for a preset time in the baggage recognition mode, and a transfer time t1 required to transferring to the baggage recognition mode in the transition process is set to be shorter than a time T required for increasing the load from the first load to the second load by the vehicle acceleration characteristics.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 18, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki Fujii, Takahiro Izuno, Isao Honda, Yoshiaki Tomatsu, Yusuke Takahashi
  • Publication number: 20140266657
    Abstract: A seat passenger determination apparatus includes: a first determination processing unit configured to determine a passenger is not seated on a vehicle seat by having gotten out of the vehicle and transfer the mode to a not-seated recognition mode when a load variation width detected by a load detection apparatus falls within a first threshold value in a state in which a non-fastened state of a seatbelt is detected; and a second determination processing unit configured to determine the passenger is not seated on the vehicle seat by having gotten out of the vehicle and transfer the mode to the not-seated recognition mode when the load variation width detected by the load detection apparatus falls within a second threshold value which is larger than the first threshold value during a predetermined time when the fact that the seatbelt has changed from the fastened state to the non-fastened state is detected.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki FUJII, Takahiro IZUNO, Isao HONDA, Yoshiaki TOMATSU, Yusuke TAKAHASHI
  • Publication number: 20140277826
    Abstract: A seat passenger determination apparatus includes: a door closing timing detector configured to detect door closing timing after having gotten out of the vehicle directly or indirectly; a counter unit configured to start counting when the load detected by the load detector falls within a threshold value and reset the count when the load is deviated from the threshold value; a determination processing unit configured to determine that no passenger is seated on the vehicle seat because the passenger has gotten out, and transfer the mode to the not-seated recognition mode when the state in which the load within the predetermined threshold value continues for a predetermined time is detected by the counter unit; and a count restricting unit configured to stop the counting process performed by the counter unit temporarily when the door-closed state is detected by the door closing timing detector during the determination by the determination processing unit.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki FUJII, Takahiro Izuno, Isao Honda, Yoshiaki Tomatsu, Yusuke Takahashi