Patents by Inventor Haruhiko Tanami

Haruhiko Tanami 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: 10946679
    Abstract: An electric apparatus for controlling movement of a target object by performing first and second feedback controls, based on a detection signal obtained from detecting the movement of the target object, generates an operation quantity on the target object based on first and second operation quantities for the second feedback control if one of a predetermined target value and an estimated first state quantity of the target object is higher than a first threshold value, and generates the operation quantity on the target object using only the first operation quantity from among the first and the second operation quantities if one of the target value and the first state quantity of the target object is lower than the first threshold value.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: March 16, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kota Kiyama, Yuichiro Suzuki, Isao Iwai, Haruhiko Tanami
  • Patent number: 10911631
    Abstract: An apparatus detects movement of a target object, estimates a control quantity for first feedback control for the target object at a first period based on a detection signal, estimates a first state quantity of the target object and a second state quantity obtained by time differentiation of the first state quantity for second feedback control for the target object at a second period, shorter than the first period, based on the detection signal, generates a first operation quantity for the first feedback control based on the control quantity, generates a second operation quantity for the second feedback control based on the first and second state quantities, determines a sign of the second operation quantity from a relationship between the first and second state quantities, and generates an operation quantity on the target object from the first and second operation quantities.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: February 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruhiko Tanami, Yuichiro Suzuki, Isao Iwai, Kota Kiyama
  • Patent number: 10855872
    Abstract: An apparatus detects movement of a target object, estimates a control quantity for first feedback control for the target object at a first period based on a detection signal, estimates a first state quantity of the target object and a second state quantity obtained by time differentiation of the first state quantity for second feedback control for the target object at a second period, shorter than the first period, based on the detection signal, generates a first operation quantity for the first feedback control based on the control quantity, generates a second operation quantity for the second feedback control based on the first and second state quantities, determines a sign of the second operation quantity from a relationship between the first and second state quantities, and generates an operation quantity on the target object from the first and second operation quantities.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: December 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruhiko Tanami, Yuichiro Suzuki, Isao Iwai, Kota Kiyama
  • Patent number: 10780723
    Abstract: An apparatus for controlling movement of a target object generates a first operation quantity for first feedback control, and determines a second operation quantity for second feedback control in accordance with which of plural regions obtained by dividing a two-dimensional space defined by two variables of the first and second state quantities includes the first and second state quantities. The plural regions include first, second and third regions, the first region being provided between the second and third regions. The second operation quantity is determined so that the second operation quantity when the first and second state quantities are located in the first region is less than the second operation quantity when the first and second state quantities are located in the second region or the third region.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 22, 2020
    Assignee: Canon Kabushihki Kaisha
    Inventors: Isao Iwai, Kota Kiyama, Haruhiko Tanami, Yuichiro Suzuki
  • Publication number: 20190335057
    Abstract: An apparatus for controlling movement of a target object, generates a first operation quantity for first feedback control, and determines a second operation quantity for second feedback control in accordance with which of plural regions obtained by dividing a two-dimensional space defined by two variables of the first and second state quantities includes the first and second state quantities. The plural regions include first, second and third regions, the first region being provided between the second and third regions. The second operation quantity is determined so that the second operation quantity when the first and second state quantities are located in the first region is smaller than the second operation quantity when the first and second state quantities are located in the second region or the third region.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 31, 2019
    Inventors: Isao Iwai, Kota Kiyama, Haruhiko Tanami, Yuichiro Suzuki
  • Publication number: 20190329573
    Abstract: According to an embodiment of the present invention, an electric apparatus for controlling movement of a target object by performing first and second feedback controls, based on a detection signal obtained from detecting the movement of the target object, generates an operation quantity on the target object based on first and second operation quantities for the second feedback control if one of a predetermined target value and an estimated first state quantity of the target object is larger than a first threshold value, and generates the operation quantity on the target object using only the first operation quantity out of the first and the second operation quantities if one of the target value and the first state quantity of the target object is smaller than the first threshold value.
    Type: Application
    Filed: April 22, 2019
    Publication date: October 31, 2019
    Inventors: Kota Kiyama, Yuichiro Suzuki, Isao Iwai, Haruhiko Tanami
  • Publication number: 20190335056
    Abstract: An apparatus detects movement of a target object, estimates a control quantity for first feedback control for the target object at a first period, based on a detection signal, estimates a first state quantity of the target object and a second state quantity obtained by time differentiation of the first state quantity for second feedback control for the target object at a second period shorter than the first period, based on the detection signal, generates a first operation quantity for the first feedback control based on the control quantity, generates a second operation quantity for the second feedback control based on the first and second state quantities, determines a sign of the second operation quantity from a relationship between the first and second state quantities, and generates an operation quantity on the target object from the first and second operation quantities.
    Type: Application
    Filed: April 22, 2019
    Publication date: October 31, 2019
    Inventors: Haruhiko Tanami, Yuichiro Suzuki, Isao Iwai, Kota Kiyama
  • Patent number: 10220642
    Abstract: A print apparatus has a supporting section for supporting a roll of a continuous sheet, a driving mechanism having a motor for rotating the roll supported by the supporting section, a detection unit configured to detect a rotation state of the roll supported by the supporting section, a conveyance roller for conveying the continuous sheet drawn out from the roll and a print unit configured to form an image on the continuous sheet conveyed by the conveyance roller. A control unit is configured to obtain information indicating a moment of inertia of the roll supported by the supporting section based on detected values of the detection unit and to adjust a driving torque of the motor based on the obtained information, intermittently during printing.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: March 5, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Patent number: 9925809
    Abstract: A roll-up apparatus for rolling up a continuous sheet into a roll shape, comprises a tension generation unit configured to generate a changeable tension to the continuous sheet; and a control unit configured to control the tension generation unit based on a roll-up condition of the continuous sheet.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: March 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Haruhiko Tanami
  • Patent number: 9621082
    Abstract: An embodiment of this invention is directed to implementing motor control of suppressing the influence of the cogging of a motor while minimizing preliminary detection processing. According to this embodiment, a printing apparatus includes an acceleration sensor for detecting the acceleration of a moving carriage, and a control unit configured to control drive of the motor to suppress the influence of the cogging of the motor based on the detection by the acceleration sensor. In accordance with the relationship between the band of the cogging frequency of the motor and the band of the resonance frequency of the carriage, the control unit determines whether to use a cancel signal for feedback control of an encoder sensor. When the cancel signal is not used, the control unit changes the gain of feedback control of the acceleration sensor.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: April 11, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Haruhiko Tanami
  • Publication number: 20170072719
    Abstract: A roll-up apparatus for rolling up a continuous sheet into a roll shape, comprises a tension generation unit configured to generate a changeable tension to the continuous sheet; and a control unit configured to control the tension generation unit based on a roll-up condition of the continuous sheet.
    Type: Application
    Filed: August 22, 2016
    Publication date: March 16, 2017
    Inventor: Haruhiko Tanami
  • Patent number: 9539831
    Abstract: This invention has been made to cause a printing apparatus for conveying roll paper and performing printing to simultaneously attain a stable conveyance accuracy and prevent skewed conveyance independently of LF roller driving conditions and disturbance conditions that variously change as the roll paper state changes. For this purpose, a feed motor is used as a load generator for the roll paper. A section from a conveyance operation by the LF roller to the next conveyance operation is divided into a plurality of sub-sections. A feed mechanism is controlled by switching between a feeder load generation section and a feeder load zero section for each sub-section.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: January 10, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20160207333
    Abstract: A print apparatus has a supporting section for supporting a roll of a continuous sheet, a driving mechanism having a motor for rotating the roll supported by the supporting section, a detection unit configured to detect a rotation state of the roll supported by the supporting section, a conveyance roller for conveying the continuous sheet drawn out from the roll and a print unit configured to form an image on the continuous sheet conveyed by the conveyance roller. A control unit is configured to obtain information indicating a moment of inertia of the roll supported by the supporting section based on detected values of the detection unit and to adjust a driving torque of the motor based on the obtained information, intermittently during printing.
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Patent number: 9334137
    Abstract: There are provided a roll sheet conveying apparatus and a sheet conveying control method wherein it is possible to control motor driving for conveying a roll sheet at appropriate timing to keep constant the tension of the sheet to be conveyed without performing a special identifying operation. For this feature, a relationship between friction load torque on the roll sheet and the mass of the roll sheet is previously stored in a storing unit, whereby the moment of inertia of the roll sheet can be detected at appropriate timing during printing. As a result, the optimum tension of the sheet to be conveyed can be maintained by appropriately adjusting the driving control of a sheet feeding motor and a conveying motor without performing a special identifying operation.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: May 10, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Patent number: 9227809
    Abstract: A conveyance apparatus includes a feeding unit, on which a roll sheet is settable, configured to feed the roll sheet, a conveyance roller configured to convey a sheet fed from the feeding unit, a first detection unit configured to detect a conveyance distance of the sheet conveyed by the conveyance roller, a second detection unit configured to detect a conveyance distance of the sheet drawn out from the roll sheet set on the feeding unit, a driving unit configured to synchronously drive the feeding unit when the sheet is conveyed by the conveyance roller, and a determination unit configured to determine a state of an end portion of the roll sheet based on detection results by the first detection unit and the second detection unit.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20150314619
    Abstract: An embodiment of this invention is directed to implementing motor control of suppressing the influence of the cogging of a motor while minimizing preliminary detection processing. According to this embodiment, a printing apparatus includes an acceleration sensor for detecting the acceleration of a moving carriage, and a control unit configured to control drive of the motor to suppress the influence of the cogging of the motor based on the detection by the acceleration sensor. In accordance with the relationship between the band of the cogging frequency of the motor and the band of the resonance frequency of the carriage, the control unit determines whether to use a cancel signal for feedback control of an encoder sensor. When the cancel signal is not used, the control unit changes the gain of feedback control of the acceleration sensor.
    Type: Application
    Filed: April 21, 2015
    Publication date: November 5, 2015
    Inventor: Haruhiko Tanami
  • Patent number: 8899853
    Abstract: A conveyance apparatus includes: a supply unit rotatably supporting a roll member around which a sheet is wound in form of a roll and configured to supply the sheet from the roll member; a motor for rotating the roll member; a roller pair configured to convey the sheet supplied from the supply unit while pinching the sheet; and a control unit configured to set the torque of the motor according to sheet information related to the sheet when taking up the sheet on the roll member by driving the motor while the sheet is pinched by the roller pair being stopped.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: December 2, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuo Kikuchi, Ryoya Shinjo, Yuki Igarashi, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20140239113
    Abstract: There are provided a roll sheet conveying apparatus and a sheet conveying control method wherein it is possible to control motor driving for conveying a roll sheet at appropriate timing to keep constant the tension of the sheet to be conveyed without performing a special identifying operation. For this feature, a relationship between friction load torque on the roll sheet and the mass of the roll sheet is previously stored in a storing unit, whereby the moment of inertia of the roll sheet can be detected at appropriate timing during printing. As a result, the optimum tension of the sheet to be conveyed can be maintained by appropriately adjusting the driving control of a sheet feeding motor and a conveying motor without performing a special identifying operation.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 28, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuki Igarashi, Ryoya Shinjo, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20140008408
    Abstract: A conveyance apparatus includes a feeding unit, on which a roll sheet is settable, configured to feed the roll sheet, a conveyance roller configured to convey a sheet fed from the feeding unit, a first detection unit configured to detect a conveyance distance of the sheet conveyed by the conveyance roller, a second detection unit configured to detect a conveyance distance of the sheet drawn out from the roll sheet set on the feeding unit, a driving unit configured to synchronously drive the feeding unit when the sheet is conveyed by the conveyance roller, and a determination unit configured to determine a state of an end portion of the roll sheet based on detection results by the first detection unit and the second detection unit.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Inventors: Haruhiko Tanami, Yuki Igarashi, Ryoya Shinjo, Ryohei Maruyama, Shin Genta, Naoki Wakayama
  • Publication number: 20130026283
    Abstract: A conveyance apparatus includes: a supply unit rotatably supporting a roll member around which a sheet is wound in form of a roll and configured to supply the sheet from the roll member; a motor for rotating the roll member; a roller pair configured to convey the sheet supplied from the supply unit while pinching the sheet; and a control unit configured to set the torque of the motor according to sheet information related to the sheet when taking up the sheet on the roll member by driving the motor while the sheet is pinched by the roller pair being stopped.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 31, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Kikuchi, Ryoya Shinjo, Yuki Igarashi, Haruhiko Tanami, Ryohei Maruyama, Shin Genta, Naoki Wakayama