Patents by Inventor Shintaro Yoshizawa

Shintaro Yoshizawa 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: 20180096206
    Abstract: Provided is a voice interaction device capable of turning lines of sight of eyes of an interactive robot to a conversation partner without inhibiting voice interaction. The voice interaction device is incorporated in the interactive robot. The voice interaction device includes a photographing unit configured to photograph an image; an environment recognition unit configured to recognize a position of a conversation partner captured in the image; a display unit disposed at positions of the eyes of the interactive robot and configured to display the eyes of the interactive robot; and an eye control unit configured to turn the lines of sight of the eyes of the interactive robot displayed on the display unit to a position where the conversation partner is recognized.
    Type: Application
    Filed: August 14, 2017
    Publication date: April 5, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mina YUKI, Shintaro YOSHIZAWA
  • Publication number: 20180093381
    Abstract: Provided is a voice interaction device capable of reducing a sense of unfriendliness given to a conversation partner. The voice interaction device is incorporated in an interactive robot. The voice interaction device includes a display unit disposed at positions of eyes of the interactive robot and configured to display the eyes of the interactive robot; a distance measurement unit configured to measure a distance between the interactive robot and the conversation partner; and an eye control unit configured to set a size of each of pupils of the interactive robot displayed on the display unit when the distance measured by the distance measurement unit is less than a predetermined distance to be larger than a size of each of the pupils displayed on the display unit when the measured distance is equal to or more than the predetermined distance.
    Type: Application
    Filed: August 15, 2017
    Publication date: April 5, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mina YUKI, Shintaro YOSHIZAWA
  • Publication number: 20180085924
    Abstract: A communication device includes a structure, a controller, and sensors that detect the relative position of an object around the structure. The structure has a face unit that is one of the units of the structure. The controller controls the movement of each unit of the structure, thereby causing the structure to perform a gesture expressing a communication behavior. The controller controls the movement of the units so that the structure performs different gestures depending on the angle between the direction of the face unit and the direction of the user's face as viewed from the face unit.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 29, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Wataru KAKU, Shintaro YOSHIZAWA
  • Patent number: 9809220
    Abstract: According to an embodiment, there is provided a drive assist device including an index calculation unit configured to calculate an index relating to a relative relationship between a vehicle and a target object and a drive assist determination unit configured to determine whether to execute a drive assist control of the vehicle based on the index and as the vehicle width direction component of the relative speed between the vehicle and the target object decreases, the index calculation unit calculates the index with increasing a degree of influence of the relative relationship relating to the vehicle width direction component, or as the vehicle width direction component of the relative distance between the vehicle and the target object increases, the index calculation unit calculates the index with increasing the degree of influence of the relative relationship relating to the vehicle width direction component.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: November 7, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Quy Hung Nguyen Van, Hiroshi Kishi, Shintaro Yoshizawa, Hirokazu Kikuchi
  • Patent number: 9741251
    Abstract: A collision avoidance assistance device includes an object detection unit configured to detect the object, a planned execution timing determination unit configured to determine a planned execution timing, a motion characteristics value acquisition unit configured to acquire a motion characteristics value in a comparison target time span which is a predetermined time span later than a detection timing at which the object detection unit detects the object and prior to the planned execution timing, and a collision avoidance assistance determination unit configured to determine whether or not to execute the collision avoidance assistance at the timing prior to the planned execution timing, based on the result of comparison between the motion characteristics value and a reference motion characteristics value in the comparison target time span obtainable from a history of the past motion characteristics values.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: August 22, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shintaro Yoshizawa
  • Publication number: 20160328974
    Abstract: A collision avoidance assistance device includes an object detection unit configured to detect the object, a planned execution timing determination unit configured to determine a planned execution timing, a motion characteristics value acquisition unit configured to acquire a motion characteristics value in a comparison target time span which is a predetermined time span later than a detection timing at which the object detection unit detects the object and prior to the planned execution timing, and a collision avoidance assistance determination unit configured to determine whether or not to execute the collision avoidance assistance at the timing prior to the planned execution timing, based on the result of comparison between the motion characteristics value and a reference motion characteristics value in the comparison target time span obtainable from a history of the past motion characteristics values.
    Type: Application
    Filed: February 17, 2014
    Publication date: November 10, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shintaro YOSHIZAWA
  • Publication number: 20160082955
    Abstract: According to an embodiment, there is provided a drive assist device including an index calculation unit configured to calculate an index relating to a relative relationship between a vehicle and a target object and a drive assist determination unit configured to determine whether to execute a drive assist control of the vehicle based on the index and as the vehicle width direction component of the relative speed between the vehicle and the target object decreases, the index calculation unit calculates the index with increasing a degree of influence of the relative relationship relating to the vehicle width direction component, or as the vehicle width direction component of the relative distance between the vehicle and the target object increases, the index calculation unit calculates the index with increasing the degree of influence of the relative relationship relating to the vehicle width direction component.
    Type: Application
    Filed: April 25, 2013
    Publication date: March 24, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Quy Hung NGUYEN VAN, Hiroshi KISHI, Shintaro YOSHIZAWA, Hirokazu KIKUCHI
  • Publication number: 20150336579
    Abstract: A drive assist device includes: an approach degree calculator configured to calculate a first approach degree of a vehicle to an object in a vehicle traveling direction and to calculate a second approach degree of the vehicle to the object in a direction that intersects the vehicle traveling direction based on a relative velocity between the vehicle and the object; and a drive assist control unit configured to control execution of drive assist based on the first approach degree and the second approach degree.
    Type: Application
    Filed: November 8, 2012
    Publication date: November 26, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro YOSHIZAWA, Hirokazu KIKUCHI, Hiroshi KISHI, Quy Hung NGUYEN VAN
  • Patent number: 8947218
    Abstract: An ECU of a driving support device predicts the risk of contact between a host vehicle and obstacles around the host vehicle when the host vehicle travels by a driving action related to at least one normative action candidate, which is a normative driving action candidate of the host vehicle for the surrounding conditions of the host vehicle. Therefore, it is possible to provide the normative action candidates considering the risk of contact between the host vehicle and the obstacles around the host vehicle.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shintaro Yoshizawa, Hirotaka Kaji
  • Publication number: 20140236386
    Abstract: 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: Application
    Filed: September 22, 2011
    Publication date: August 21, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro Yoshizawa, Hirokazu Kikuchi, Hiroki Okamura, Takuya Yamanashi, Quy Hung Nguyen Van
  • Patent number: 8594774
    Abstract: An object of the present invention is to provide a sleep determination device and a sleep determination method capable of precisely determining a sleep stage based on heartbeat information of a subject.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: November 26, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shintaro Yoshizawa
  • Patent number: 8452528
    Abstract: An object of the invention is to provide a visual recognition area estimation device that can accurately estimate an area recognized by a driver in real time. The visual recognition area estimation device of the present invention calculates the visual recognition area recognized by the driver by means of the visual recognition area calculation portion 11 based on the eyes of the driver, and estimates a time series visual recognition area as the area currently recognized by the driver by means of the visual recognition time space map creation portion 14 based on histories of a plurality of visual recognition areas calculated from the past to the present for a predetermined time. In this manner, by estimating the time series visual recognition area also including the past visual recognition area, the area currently recognized by the driver can be accurately estimated, and the eyes of the driver are not correlated with the obstacle but based on the standard area.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: May 28, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroki Mori, Shintaro Yoshizawa
  • Patent number: 8290620
    Abstract: Disclosed is a route creation method capable of creating a travel route which reduces the travel quantity of a robot and achieves the efficient travel of the robot. The route creation method and route creation device creates a plurality of candidate routes by using an intermediate point generated between the initial position and the final position set in advance, and thereafter evaluates the travel quantity of a traveling part of a robot with respect to each candidate route to select a candidate route, which achieves the most efficient travel, as a travel route.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: October 16, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shintaro Yoshizawa
  • Publication number: 20120218093
    Abstract: An ECU of a driving support device predicts the risk of contact between a host vehicle and obstacles around the host vehicle when the host vehicle travels by a driving action related to at least one normative action candidate, which is a normative driving action candidate of the host vehicle for the surrounding conditions of the host vehicle. Therefore, it is possible to provide the normative action candidates considering the risk of contact between the host vehicle 400-and the obstacles around the host vehicle.
    Type: Application
    Filed: March 23, 2010
    Publication date: August 30, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro Yoshizawa, Hirotaka Kaji
  • Patent number: 8140149
    Abstract: A drowsiness detector capable of detecting light drowsiness of a subject with high precision is provided. The drowsiness detector acquires the measurement data of a measurement device first, and acquires a value of the pulse rate by performing preprocessing on the measurement data and extracts a pulse fluctuation from the value of the pulse rate. Then, the drowsiness detector sets the reference section width of the pulse feature value referred to in order to acquire the standard deviation of the pulse feature value (value of the pulse rate and pulse fluctuation) and then calculates the standard deviation value of the pulse feature value in the reference section width and acquires the corrected standard deviation value of the pulse feature value by dividing the standard deviation value of the pulse feature value by the pulse feature value. Then, the drowsiness detector determines whether or not the driver is lightly drowsy using the corrected standard deviation value of the pulse feature value.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: March 20, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiyuki Hatakeyama, Shintaro Yoshizawa
  • Publication number: 20120046857
    Abstract: An object of the invention is to provide a visual recognition area estimation device that can accurately estimate an area recognized by a driver in real time. The visual recognition area estimation device of the present invention calculates the visual recognition area recognized by the driver by means of the visual recognition area calculation portion 11 based on the eyes of the driver, and estimates a time series visual recognition area as the area currently recognized by the driver by means of the visual recognition time space map creation portion 14 based on histories of a plurality of visual recognition areas calculated from the past to the present for a predetermined time. In this manner, by estimating the time series visual recognition area also including the past visual recognition area, the area currently recognized by the driver can be accurately estimated, and the eyes of the driver are not correlated with the obstacle but based on the standard area.
    Type: Application
    Filed: May 12, 2009
    Publication date: February 23, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Mori, Shintaro Yoshizawa
  • Patent number: 8055383
    Abstract: A path generating device 1 has a constraint mid-configuration generator 10. The constraint mid-configuration generator 10 defines a constraint surface in a joint angle space. The path generating device 1 probabilistically generates a mid-configuration in the joint angle space. The constraint mid-configuration generator 10 projects the probabilistically generated mid-configuration onto the constraint surface to generate a projected mid-configuration. Projected mid-configurations generated in this manner are joined to generate a path that does not interfere with any obstacle (environmental object) in a work space.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: November 8, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shintaro Yoshizawa
  • Publication number: 20110152704
    Abstract: An object of the present invention is to provide a sleep determination device and a sleep determination method capable of precisely determining a sleep stage based on heartbeat information of a subject.
    Type: Application
    Filed: August 27, 2009
    Publication date: June 23, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shintaro Yoshizawa
  • Publication number: 20110105925
    Abstract: A drowsiness detector capable of detecting light drowsiness of a subject with high precision is provided. The drowsiness detector acquires the measurement data of a measurement device first, and acquires a value of the pulse rate by performing preprocessing on the measurement data and extracts a pulse fluctuation from the value of the pulse rate. Then, the drowsiness detector sets the reference section width of the pulse feature value referred to in order to acquire the standard deviation of the pulse feature value (value of the pulse rate and pulse fluctuation) and then calculates the standard deviation value of the pulse feature value in the reference section width and acquires the corrected standard deviation value of the pulse feature value by dividing the standard deviation value of the pulse feature value by the pulse feature value. Then, the drowsiness detector determines whether or not the driver is lightly drowsy using the corrected standard deviation value of the pulse feature value.
    Type: Application
    Filed: July 2, 2009
    Publication date: May 5, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki Hatakeyama, Shintaro Yoshizawa
  • Publication number: 20100204828
    Abstract: A movement path generating device for a robot is provided which can generate a movement path of a jointed robot satisfying a constraint condition and accomplishing optimization of various estimation conditions.
    Type: Application
    Filed: July 29, 2008
    Publication date: August 12, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro Yoshizawa, Yutaka Hirano