Patents by Inventor Tadahiko Iijima

Tadahiko Iijima 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: 11969284
    Abstract: A radiographic imaging apparatus includes a state transition mode selection unit configured to select a state transition mode from among a first state transition mode of changing from a stand-by state to a ready-for-imaging state based on irradiation preparation start information about a radiation generation apparatus and a second state transition mode of changing from the stand-by state to the ready-for-imaging state based on other information excluding the irradiation preparation start information.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: April 30, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadahiko Iijima
  • Patent number: 11442182
    Abstract: A time synchronization system includes at least one time server and a plurality of time clients connected to each other via a network. The time client comprises: a communication unit configured to obtain time information of the time server by transmitting/receiving messages to/from the time server; and a time count control unit configured to synchronize time information of an internal timepiece with time information of the time server. The time count control unit controls transmission of the messages by adjusting transmission intervals of the messages to irregular intervals.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: September 13, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akehiko Uchiyama, Tadahiko Iijima
  • Publication number: 20220096035
    Abstract: A radiographic imaging apparatus includes a state transition mode selection unit configured to select a state transition mode from among a first state transition mode of changing from a stand-by state to a ready-for-imaging state based on irradiation preparation start information about a radiation generation apparatus and a second state transition mode of changing from the stand-by state to the ready-for-imaging state based on other information excluding the irradiation preparation start information.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 31, 2022
    Inventor: Tadahiko Iijima
  • Patent number: 10853688
    Abstract: A radiation image capturing system includes a plurality of radiation image capturing apparatuses that each performs an image capturing operation to capture a radiation image based on radiation emitted from a radiation generating apparatus and transmitted through an object, a control apparatus that communicates with the plurality of radiation image capturing apparatuses, a calculation unit that calculates information about similarity between the radiation image and a reference image, and an image acquisition unit that acquires the radiation image from the radiation image capturing apparatus selected from the plurality of radiation image capturing apparatuses based on the information about similarity.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: December 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadahiko Iijima
  • Publication number: 20200209409
    Abstract: A time synchronization system includes at least one time server and a plurality of time clients connected to each other via a network. The time client comprises: a communication unit configured to obtain time information of the time server by transmitting/receiving messages to/from the time server; and a time count control unit configured to synchronize time information of an internal timepiece with time information of the time server. The time count control unit controls transmission of the messages by adjusting transmission intervals of the messages to irregular intervals.
    Type: Application
    Filed: December 19, 2019
    Publication date: July 2, 2020
    Inventors: Akehiko Uchiyama, Tadahiko Iijima
  • Patent number: 10548558
    Abstract: In a radiographic system in which long length imaging is performed by combining a plurality of radiographic apparatuses whose preparatory periods from a request of radiation exposure to start of accumulation are different, a control apparatus controls the plurality of radiographic apparatuses and a radiation generation apparatus so that an exposure period of the radiation generation apparatus is included in a period in which accumulation periods of all the radiographic apparatuses overlap.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Sasaki, Tadahiko Iijima
  • Patent number: 10470737
    Abstract: A radiographic imaging system includes a repeater, a radiographic imaging apparatus, and a control apparatus. The control apparatus controls the radiographic imaging apparatus. The repeater controls timing to emit radiation from a radiation source. The radiographic imaging apparatus includes a communication circuit that wirelessly communicates with an external device in a first communication mode and a second communication mode in which power consumption is lower than that in the first communication mode. The radiographic imaging apparatus also includes a communication control unit that controls the communication circuit so that, when receiving an instruction to start preparation for imaging, the communication circuit operates in the first communication mode until receiving a signal for emission of radiation from the repeater.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: November 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadahiko Iijima
  • Patent number: 10368826
    Abstract: A radiation imaging control apparatus includes an exposure switch configured to instruct radiation emission, an acquisition unit configured to acquire a first signal indicating that the exposure switch is pressed, a first connection unit configured to detachably connect with a control unit of a radiant ray detector to transmit a second signal indicating the driving state of the radiant ray detector, a second connection unit configured to detachably connect with a control unit of a radiant ray generation apparatus to transmit a specific signal, and a control unit configured to perform control to output the specific signal via the second connection unit upon acquisition of the first and second signals, wherein the second connection unit is a connector for making wired connection.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 6, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshikazu Tamura, Taro Hiroike, Tadahiko Iijima, Hirokazu Ohguri, Toshiya Ishioka
  • Patent number: 10271813
    Abstract: A radiography system for executing long-length imaging by using a plurality of radiation imaging apparatuses includes an acquisition unit configured to acquire respective states of the plurality of radiation imaging apparatuses, and a state control unit configured to shift power consumption of one radiation imaging apparatus to a same state as that of another radiation imaging apparatus based on the respective states acquired by the acquisition unit in a case where at least the one radiation imaging apparatus from among the plurality of radiation imaging apparatuses is in a state where the power consumption is higher than that of the another radiation imaging apparatus.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: April 30, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadahiko Iijima
  • Publication number: 20190042876
    Abstract: A radiation image capturing system includes a plurality of radiation image capturing apparatuses that each performs an image capturing operation to capture a radiation image based on radiation emitted from a radiation generating apparatus and transmitted through an object, a control apparatus that communicates with the plurality of radiation image capturing apparatuses, a calculation unit that calculates information about similarity between the radiation image and a reference image, and an image acquisition unit that acquires the radiation image from the radiation image capturing apparatus selected from the plurality of radiation image capturing apparatuses based on the information about similarity.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 7, 2019
    Inventor: Tadahiko Iijima
  • Publication number: 20180153496
    Abstract: In a radiographic system in which long length imaging is performed by combining a plurality of radiographic apparatuses whose preparatory periods from a request of radiation exposure to start of accumulation are different, a control apparatus controls the plurality of radiographic apparatuses and a radiation generation apparatus so that an exposure period of the radiation generation apparatus is included in a period in which accumulation periods of all the radiographic apparatuses overlap.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 7, 2018
    Inventors: Hiroshi Sasaki, Tadahiko Iijima
  • Patent number: 9962137
    Abstract: A control apparatus for a radiation sensor, including pixels each for obtaining electric charges, includes: a control unit configured to start driving for imaging in response to radiation irradiation, and stop the driving when a first time elapses after the start of the driving; and a receiving unit configured to externally receive a predetermined instruction signal. The control unit is configured to, in response to reception of the predetermined instruction signal, control a state of the radiation sensor based on a difference between the first time and a second time from the start of the driving to the reception of the predetermined instruction signal.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: May 8, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tadahiko Iijima
  • Publication number: 20180070907
    Abstract: A radiographic imaging system includes a repeater, a radiographic imaging apparatus, and a control apparatus. The control apparatus controls the radiographic imaging apparatus. The repeater controls timing to emit radiation from a radiation source. The radiographic imaging apparatus includes a communication circuit that wirelessly communicates with an external device in a first communication mode and a second communication mode in which power consumption is lower than that in the first communication mode. The radiographic imaging apparatus also includes a communication control unit that controls the communication circuit so that, when receiving an instruction to start preparation for imaging, the communication circuit operates in the first communication mode until receiving a signal for emission of radiation from the repeater.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 15, 2018
    Inventor: Tadahiko Iijima
  • Patent number: 9829587
    Abstract: A radiographing system includes a plurality of radiation imaging apparatuses and a control apparatus. The control apparatus includes a memory, a processor, a shifting unit, a determining unit, and a disabling unit. The shifting unit shifts the radiation imaging apparatus into the radiographing enabled state in which radiation is detected and a radiographic image is generated. The determining unit determine whether to disable shifting the radiation imaging apparatus into the radiographing enabled state based on control for radiographing using a different radiation imaging apparatus currently in the radiographing enabled state. The disabling unit disables shifting the radiation imaging apparatus into the radiographing enabled state based on a determination result.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: November 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadahiko Iijima, Hirokazu Ohguri, Shinji Yamanaka
  • Patent number: 9638814
    Abstract: A radiation imaging apparatus including a radiation detection unit in which a plurality of photoelectric conversion devices configured to convert radiation into electric charges are arranged and a communication unit configured to output image data formed from electric charges read out from the photoelectric conversion devices includes a setting unit configured to perform setting for connecting the communication unit wirelessly to an external apparatus, by executing processing based on a plurality of setting methods.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: May 2, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tadahiko Iijima
  • Publication number: 20170108595
    Abstract: A radiographing system includes a plurality of radiation imaging apparatuses and a control apparatus. The control apparatus includes a memory, a processor, a shifting unit, a determining unit, and a disabling unit. The shifting unit shifts the radiation imaging apparatus into the radiographing enabled state in which radiation is detected and a radiographic image is generated. The determining unit determine whether to disable shifting the radiation imaging apparatus into the radiographing enabled state based on control for radiographing using a different radiation imaging apparatus currently in the radiographing enabled state. The disabling unit disables shifting the radiation imaging apparatus into the radiographing enabled state based on a determination result.
    Type: Application
    Filed: October 11, 2016
    Publication date: April 20, 2017
    Inventors: Tadahiko Iijima, Hirokazu Ohguri, Shinji Yamanaka
  • Patent number: 9462992
    Abstract: A radiation imaging system comprises: a radiation imaging apparatus; an entry apparatus which is associated with a radiation generator; wherein the entry apparatus is configured, in response to a request received from the radiation imaging apparatus via a close proximity wireless communication connection, to send information to the radiation imaging apparatus via the close proximity wireless communication connection for connecting the radiation imaging apparatus to a wireless LAN; wherein the close proximity wireless communication connection has a communication range shorter than that of a wireless LAN; and a control unit for controlling the radiation generator and the radiation imaging apparatus, which has connected to the wireless LAN based on the information which has been sent from the entry apparatus via the close proximity wireless communication connection.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: October 11, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirohide Tachikawa, Tadahiko Iijima
  • Publication number: 20160278729
    Abstract: A radiography system for executing long-length imaging by using a plurality of radiation imaging apparatuses includes an acquisition unit configured to acquire respective states of the plurality of radiation imaging apparatuses, and a state control unit configured to shift power consumption of one radiation imaging apparatus to a same state as that of another radiation imaging apparatus based on the respective states acquired by the acquisition unit in a case where at least the one radiation imaging apparatus from among the plurality of radiation imaging apparatuses is in a state where the power consumption is higher than that of the another radiation imaging apparatus.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 29, 2016
    Inventor: Tadahiko Iijima
  • Publication number: 20160174350
    Abstract: A radiation imaging control apparatus includes an exposure switch configured to instruct radiation emission, an acquisition unit configured to acquire a first signal indicating that the exposure switch is pressed, a first connection unit configured to detachably connect with a control unit of a radiant ray detector to transmit a second signal indicating the driving state of the radiant ray detector, a second connection unit configured to detachably connect with a control unit of a radiant ray generation apparatus to transmit a specific signal, and a control unit configured to perform control to output the specific signal via the second connection unit upon acquisition of the first and second signals, wherein the second connection unit is a connector for making wired connection.
    Type: Application
    Filed: February 19, 2016
    Publication date: June 16, 2016
    Inventors: Toshikazu Tamura, Taro Hiroike, Tadahiko Iijima, Hirokazu Ohguri, Toshiya Ishioka
  • Patent number: 9235910
    Abstract: A graphics rendering and editing apparatus includes a rendering unit configured to render a graphic object, a position specifying unit configured to specify a pre-change position and a post-change position of an arbitrary point on the graphic object, an attribute specifying unit configured to specify a deformation attribute of the graphic object, the deformation attribute being related to how the graphic object is deformed as a position of the arbitrary point changes, and a deformation unit configured to deform, when the position specifying unit has specified the pre-change position and the post-change position the graphic object in accordance with the pre-change position, the post-change position, and the attribute specified by the attribute specifying unit.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: January 12, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadahiko Iijima, Noriaki Sato