Patents by Inventor Hirokazu Izawa

Hirokazu Izawa 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: 11940432
    Abstract: A gas detector comprises a gas detection unit and a filter introducing surrounding atmosphere to the gas detection unit. The filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: March 26, 2024
    Assignees: FIGARO ENGINEERING INC., NEW COSMOS ELECTRIC CO., LTD., UNIVERSITY PUBLIC CORPORATION OSAKA
    Inventors: Masato Takeuchi, Junpei Furuno, Kenta Fukui, Kuniyuki Izawa, Masakazu Sai, Hirokazu Mitsuhashi, Takafumi Taniguchi
  • Patent number: 11221629
    Abstract: A vacuum cleaner that can achieve efficient and accurate autonomous traveling. An obstacle detection part detects an object corresponding to an obstacle outside a main casing. A map generation part generates a map indicating information on an area having been traveled by the main casing, based on detection of the object by the obstacle detection part and a self-position estimated by a self-position estimation part during traveling of the main casing. A controller controls an operation of a driving wheel to make the main casing autonomously travel. The controller includes a traveling mode for controlling the operation of the driving wheel so as to make the main casing autonomously travel along a traveling route set based on the map. The controller determines whether or not to change the traveling route for next time based on the obstacle detected by the obstacle detection part during the traveling mode.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: January 11, 2022
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Kota Watanabe, Hirokazu Izawa, Yuuki Marutani
  • Patent number: 11143450
    Abstract: A refrigerator (1) is provided with an image capturing camera 18 (image capturing unit) configured to capture an image of an interior of a storage chamber (such as a refrigeration chamber 3); a communication portion (52) (communication unit) configured to transmit image of the interior of the storage chamber captured by the image capturing camera (18) to an exterior device; wherein the image capturing unit is stored in a recess provided in the interior of the storage chamber.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 12, 2021
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Katsushi Sumihiro, Yuuki Marutani, Kazuhiro Furuta, Hirokazu Izawa, Kota Watanabe, Ryo Kawada
  • Patent number: 11119484
    Abstract: A vacuum cleaner includes a main casing, a driving wheel, a camera, a distance calculation part, a self-position estimation part, a mapping part, and a controller. The driving wheel enables the main casing to travel. The camera is disposed on the main casing to capture an image in traveling direction side of the main casing. The distance calculation part calculates a distance to an object positioned in the traveling direction side based on the captured image. The self-position estimation part calculates a position of the main casing based on the captured image. The mapping part generates a map of a traveling place by using three-dimensional data based on calculation results by the distance calculation part and the self-position estimation part. The controller controls an operation of the driving wheel based on the three-dimensional data of the map generated by the mapping part, to make the main casing travel autonomously.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: September 14, 2021
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Hirokazu Izawa, Yuuki Marutani, Kota Watanabe
  • Patent number: 11006802
    Abstract: A vacuum cleaner capable of recording an abnormality immediately upon occurrence of the abnormality. The vacuum cleaner has a main casing. The vacuum cleaner has driving wheels for enabling the main casing to travel. The vacuum cleaner has a control unit for controlling drive of the driving wheels to make the main casing autonomously travel. The control unit has a function as an abnormality sensor for detecting an abnormality. The vacuum cleaner has a camera for picking up an image. The control unit has a cleaning mode for cleaning a cleaning-object surface, an image pickup mode for performing image pickup with the camera, and a standby mode applied during a standby state. Upon detection of an abnormality during the cleaning mode, the control unit is switched over to the image pickup mode to perform image pickup with the camera.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 18, 2021
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Kota Watanabe, Hirokazu Izawa, Kazuhiro Furuta, Yuuki Marutani, Yuki Takahashi
  • Patent number: 10951863
    Abstract: A refrigerator (1) is provided with an image capturing camera 18 (image capturing unit) configured to capture an image of an interior of a storage chamber (such as a refrigeration chamber 3); and a communication portion (52) (communication unit) configured to transmit image of the interior of the storage chamber captured by the image capturing camera (18) to an external device.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: March 16, 2021
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Yuuki Marutani, Kazuhiro Furuta, Hirokazu Izawa, Kota Watanabe, Ryo Kawada
  • Patent number: 10932635
    Abstract: A vacuum cleaner having improved obstacle detection precision. The vacuum cleaner includes a main casing, driving wheels, control unit, cameras, an image generation part, and a discrimination part. The driving wheels enable the main casing to travel. The control unit controls drive of the driving wheels to make the main casing autonomously travel. The cameras are disposed apart from each other in the main casing to pick up images on a traveling-direction side of the main casing. The image generation part generates a distance image of an object positioned on the traveling-direction side based on the images picked up by the cameras. The discrimination part discriminates whether or not the picked-up object is an obstacle based on the distance image generated by the image generation part.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: March 2, 2021
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Hirokazu Izawa, Yuuki Marutani, Kota Watanabe, Kazuhiro Furuta
  • Patent number: 10917616
    Abstract: In one embodiment, an image capturing system is configured so that a device for capturing images is communicable with an external device through a communication unit. The image capturing system is provided with an operating unit configured to make settings pertaining to image capturing, an image capturing device serving as the device for capturing images and being configured to produce image data by periodically capturing images based on the settings made to the operating unit and a display unit configured to produce a display output based on the image data.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: February 9, 2021
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Kota Watanabe, Hirokazu Izawa, Kazuhiro Furuta, Yuuki Marutani
  • Publication number: 20210026369
    Abstract: A smaller-sized vacuum cleaner capable of controlling traveling with high precision. A vacuum cleaner includes a main casing capable of traveling, a traveling/sensor type CPU configured to control traveling of the main casing, a plurality of cameras mounted on the main casing, and an image processor having the functions of an image input, image processor, self-position estimator, and map generator. The image processor acquires image data from at least two cameras out of the plurality of cameras. The image processor performs image processing to the acquired image data. The image processor estimates a self-position on the basis of the image data subjected to the image processing. The image processor generates a map of a traveling area where the main casing travels, on the basis of the image data subjected to the image processing.
    Type: Application
    Filed: December 10, 2018
    Publication date: January 28, 2021
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Hirokazu IZAWA, Yuuki MARUTANI, Kota WATANABE, Kazuhiro FURUTA
  • Publication number: 20200205628
    Abstract: An autonomous electrical cleaning apparatus including: an electric blower that generates suction negative pressure on a suction port; a rotating brush disposed at the suction port; a rotating brush driver that drives the rotating brush; a drive wheel that supports a cleaner body, driven by a drive wheel driver, a cleaning-target-surface detector that detects the surface type to be cleaned; and a robot controller that adjusts a controlled variable for any of the suction negative pressure, speed of the rotating brush, rotation direction of the rotating brush, and speed of the drive wheel, based on the surface type to be cleaned. The cleaning-target-surface detector detects the surface type be cleaned at a detection position ahead of the element for which the controlled variable is to be adjusted, and the robot controller adjusts the controlled variable when the element for which the controlled variable is to be changed reaches the detection position.
    Type: Application
    Filed: June 8, 2018
    Publication date: July 2, 2020
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Yuuki MARUTANI, Hirokazu IZAWA, Kota WATANABE
  • Patent number: 10694154
    Abstract: A camera device for use in a storage unit according to an embodiment includes a case installable to an opening end side of a door of the storage unit; an image capturing element stored inside the case and configured to capture an image inside the storage unit; and a battery stored inside the case. The battery is disposed in a lower portion of the case. A center of gravity of the camera device is different from the center.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: June 23, 2020
    Assignee: Toshiba Lifestyle Products & Services Corporation
    Inventors: Hirokazu Izawa, Kazuhiro Furuta, Yuuki Marutani, Kota Watanabe
  • Publication number: 20200121147
    Abstract: A vacuum cleaner includes a main casing, a driving wheel, a control unit, a camera, a self-position estimation part, an obstacle detection part, and a mapping part. The camera captures an image in a traveling direction side of the main casing. The self-position estimation part estimates a position of the main casing on a basis of the image captured by the camera. The obstacle detection part detects an obstacle on a basis of the image captured by the camera. A timing in which either of processing by the self-position estimation part or processing by the obstacle detection part is executed during the main casing's traveling, as well as a timing when the both types of processing are executed simultaneously during the same, are set. The vacuum cleaner can autonomously traveling while reducing a load of image processing.
    Type: Application
    Filed: May 22, 2018
    Publication date: April 23, 2020
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Hirokazu IZAWA, Yuuki MARUTANI, Kota WATANABE
  • Publication number: 20200064838
    Abstract: A vacuum cleaner includes a main casing, a driving wheel, a camera, a distance calculation part, a self-position estimation part, a mapping part, and a controller. The driving wheel enables the main casing to travel. The camera is disposed on the main casing to capture an image in traveling direction side of the main casing. The distance calculation part calculates a distance to an object positioned in the traveling direction side based on the captured image. The self-position estimation part calculates a position of the main casing based on the captured image. The mapping part generates a map of a traveling place by using three-dimensional data based on calculation results by the distance calculation part and the self-position estimation part. The controller controls an operation of the driving wheel based on the three-dimensional data of the map generated by the mapping part, to make the main casing travel autonomously.
    Type: Application
    Filed: June 7, 2017
    Publication date: February 27, 2020
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Hirokazu IZAWA, Yuuki MARUTANI, Kota WATANABE
  • Publication number: 20200057449
    Abstract: A vacuum cleaner includes a main casing, a driving wheel, a camera, an obstacle detection part, a lamp, and a control unit. The driving wheel allows the main casing to travel. The camera is disposed on the main casing to capture an image in a traveling direction side of the main casing. The obstacle detection part performs detection of an obstacle on a basis of the image captured by the camera. The lamp assists the detection performed by the obstacle detection part. The control unit makes the main casing travel autonomously, by controlling driving of the driving wheel on a basis of the detection of the obstacle performed by the obstacle detection part. The vacuum cleaner can secure accuracy in obstacle detection.
    Type: Application
    Filed: May 22, 2018
    Publication date: February 20, 2020
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Kota WATANABE, Hirokazu IZAWA, Yuuki MARUTANI
  • Publication number: 20200022551
    Abstract: One embodiment of a vacuum cleaner is provided and is capable of performing efficient autonomous traveling. The vacuum cleaner includes a main casing, driving wheels, a map generation part, a self-position estimation part, an information acquisition part and a control unit. The driving wheels enable the main casing to travel. The map generation part generates a map indicative of information on an area. The self-position estimation part estimates a self-position. The information acquisition part acquires external information on the main casing. The control unit controls the operation of the driving wheels based on the map generated by the map generation part to make the main casing autonomously travel. The control unit makes a search motion to perform when the information on the area at autonomous traveling is different from the information on the area indicated in the map generated by the map generation part.
    Type: Application
    Filed: December 14, 2016
    Publication date: January 23, 2020
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Kota WATANABE, Hirokazu IZAWA, Kazuhiro FURUTA, Yuuki MARUTANI
  • Patent number: 10510110
    Abstract: A network system including a home appliance, a server, and a communication terminal. The home appliance is provided with a control portion configured to control an operating state of the home appliance, an information setting portion configured to set information corresponding to current state of the control portion, and a transmitting portion configured to externally transmit a result of information set by the information setting portion through the communication line. The communication terminal is configured to display a specific advice, the specific advice being based on data, obtained from the multiple entries of data provided by the server, being suitable with a result of information transmitted by the home appliance.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: December 17, 2019
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Yuki Takahashi, Hitomi Saeki, Hirokazu Izawa, Yuuki Marutani, Kazuhiro Furuta, Kota Watanabe
  • Publication number: 20190335145
    Abstract: One embodiment of a camera system is provided with a camera device serving as an image capturing unit; a communication unit configured to transmit image information captured by the camera device to an external device; and a display terminal configured to display image information captured by the camera device, the display terminal being configured to display at least either of image information captured by the camera device according to prescribed conditions and image information captured according to user instructions.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 31, 2019
    Applicant: Toshiba Lifestyle Products & Services Corp.
    Inventors: Hirokazu IZAWA, Kazuhiro FURUTA, Yuuki MARUTANI, Kota WATANABE, Yuki TAKAHASHI, Ryo KAWADA
  • Publication number: 20190302796
    Abstract: A vacuum cleaner that can achieve efficient and accurate autonomous traveling. An obstacle detection part detects an object corresponding to an obstacle outside a main casing. A map generation part generates a map indicating information on an area having been traveled by the main casing, based on detection of the object by the obstacle detection part and a self-position estimated by a self-position estimation part during traveling of the main casing. A controller controls an operation of a driving wheel to make the main casing autonomously travel. The controller includes a traveling mode for controlling the operation of the driving wheel so as to make the main casing autonomously travel along a traveling route set based on the map. The controller determines whether or not to change the traveling route for next time based on the obstacle detected by the obstacle detection part during the traveling mode.
    Type: Application
    Filed: June 7, 2017
    Publication date: October 3, 2019
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Kota WATANABE, Hirokazu IZAWA, Yuuki MARUTANI
  • Publication number: 20190273897
    Abstract: In one embodiment, an image capturing system is configured so that a device for capturing images is communicable with an external device through a communication unit. The image capturing system is provided with an operating unit configured to make settings pertaining to image capturing, an image capturing device serving as the device for capturing images and being configured to produce image data by periodically capturing images based on the settings made to the operating unit and a display unit configured to produce a display output based on the image data.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Kota WATANABE, Hirokazu IZAWA, Kazuhiro FURUTA, Yuuki MARUTANI
  • Patent number: 10389980
    Abstract: One embodiment of a camera system is provided with a camera device serving as an image capturing unit; a communication unit configured to transmit image information captured by the camera device to an external device; and a display terminal configured to display image information captured by the camera device, the display terminal being configured to display at least either of image information captured by the camera device according to prescribed conditions and image information captured according to user instructions.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: August 20, 2019
    Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
    Inventors: Hirokazu Izawa, Kazuhiro Furuta, Yuuki Marutani, Kota Watanabe, Yuki Takahashi, Ryo Kawada