Patents by Inventor Takeshi Iwasa
Takeshi Iwasa 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: 11592510Abstract: The present invention relates to a medical apparatus which includes a motion mechanism which has at least one degree of freedom, an actuator configured to drive the motion mechanism and a control unit configured to control the actuator, and which operates in a magnetic field environment of an MRI, the medical apparatus including: a data storage unit in which data related to magnetic susceptibility of the actuator is stored; a calculating unit configured to calculate information related to an influence which the actuator exerts upon the magnetic field environment by calculation based on the magnetic susceptibility; and a communication unit configured to output the information to the MRI. An influence which an apparatus which operates in a strong magnetic field environment exerts upon an MR image can be reduced.Type: GrantFiled: July 29, 2019Date of Patent: February 28, 2023Assignee: Canon Kabushiki KaishaInventor: Takeshi Iwasa
-
Patent number: 11146778Abstract: A synchronization control device includes a detection unit configured to detect at least one of a position and an orientation of the device in a three-dimensional space. The synchronization control device includes one or more image pickup elements, and a control unit configured to control such that a phase of an image capturing timing of the one or more image pickup elements is synchronized with a phase of a detection timing of the detection unit, and a cycle length of the image capturing timing is equal to a cycle length of the detection timing or an integral multiple of the cycle length of the detection tuning.Type: GrantFiled: February 7, 2020Date of Patent: October 12, 2021Assignee: Canon Kabushiki KaishaInventor: Takeshi Iwasa
-
Publication number: 20210141227Abstract: A display device having a display element configured to display an image, the display device comprising: a wearing state determination unit configured to determine whether or not the display device is in a wearing state where the display device is worn by a user; a moving state determination unit configured to determine whether the display device is in a stopping state where the display device is stopping or in a moving state where the display device is moving; and a control unit configured to control the display element to be in a lighting enabled state when the display device is in the wearing state and in the moving state.Type: ApplicationFiled: October 29, 2020Publication date: May 13, 2021Inventor: Takeshi Iwasa
-
Patent number: 10976802Abstract: The present invention aims to appropriately prevent an excessive temperature rise of a portable apparatus according to a situation of a heat release property of the portable apparatus. For such a purpose, there is provided a portable apparatus which comprises: a temperature estimating unit configured to estimate a temperature of the portable apparatus; a heat release property determining unit configured to determine whether or not a heat release property of the portable apparatus satisfies predetermined performance, based on information related to an orientation of the portable apparatus; and a stop controlling unit configured to stop at least a part of functions of the portable apparatus, based on the temperature estimated by the temperature estimating unit and a determination result by the heat release property determining unit.Type: GrantFiled: October 30, 2018Date of Patent: April 13, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Takeshi Iwasa
-
Publication number: 20200267376Abstract: A synchronization control device includes a detection unit configured to detect at least one of a position and an orientation of the device in a three-dimensional space. The synchronization control device includes one or more image pickup elements, and a control unit configured to control such that a phase of an image capturing timing of the one or more image pickup elements is synchronized with a phase of a detection timing of the detection unit, and a cycle length of the image capturing timing is equal to a cycle length of the detection timing or an integral multiple of the cycle length of the detection tuning.Type: ApplicationFiled: February 7, 2020Publication date: August 20, 2020Inventor: Takeshi Iwasa
-
Publication number: 20190361084Abstract: The present invention relates to a medical apparatus which includes a motion mechanism which has at least one degree of freedom, an actuator configured to drive the motion mechanism and a control unit configured to control the actuator, and which operates in a magnetic field environment of an MRI, the medical apparatus including: a data storage unit in which data related to magnetic susceptibility of the actuator is stored; a calculating unit configured to calculate information related to an influence which the actuator exerts upon the magnetic field environment by calculation based on the magnetic susceptibility; and a communication unit configured to output the information to the MRI. An influence which an apparatus which operates in a strong magnetic field environment exerts upon an MR image can be reduced.Type: ApplicationFiled: July 29, 2019Publication date: November 28, 2019Inventor: Takeshi Iwasa
-
Patent number: 10408909Abstract: The present invention relates to a medical apparatus which includes a motion mechanism which has at least one degree of freedom, an actuator configured to drive the motion mechanism and a control unit configured to control the actuator, and which operates in a magnetic field environment of an MRI, the medical apparatus including: a data storage unit in which data related to magnetic susceptibility of the actuator is stored; a calculating unit configured to calculate information related to an influence which the actuator exerts upon the magnetic field environment by calculation based on the magnetic susceptibility; and a communication unit configured to output the information to the MRI. An influence which an apparatus which operates in a strong magnetic field environment exerts upon an MR image can be reduced.Type: GrantFiled: May 22, 2013Date of Patent: September 10, 2019Assignee: Canon Kabushiki KaishaInventor: Takeshi Iwasa
-
Publication number: 20190138067Abstract: The present invention aims to appropriately prevent an excessive temperature rise of a portable apparatus according to a situation of a heat release property of the portable apparatus. For such a purpose, there is provided a portable apparatus which comprises: a temperature estimating unit configured to estimate a temperature of the portable apparatus; a heat release property determining unit configured to determine whether or not a heat release property of the portable apparatus satisfies predetermined performance, based on information related to an orientation of the portable apparatus; and a stop controlling unit configured to stop at least a part of functions of the portable apparatus, based on the temperature estimated by the temperature estimating unit and a determination result by the heat release property determining unit.Type: ApplicationFiled: October 30, 2018Publication date: May 9, 2019Inventor: Takeshi Iwasa
-
Publication number: 20160063307Abstract: The image acquisition device has a stage that supports the sample, and an imaging unit that has an image forming optical system forming an image of the sample and captures the formed image. The image acquisition device further includes a specimen information acquisition unit that acquires information on presence or absence of a specimen included in the sample based on an imaging result of the imaging unit, and a control unit that moves the stage based on the information on the presence or absence of the specimen.Type: ApplicationFiled: August 7, 2015Publication date: March 3, 2016Inventor: Takeshi Iwasa
-
Patent number: 9134672Abstract: A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.Type: GrantFiled: May 28, 2014Date of Patent: September 15, 2015Assignee: Canon Kabushiki KaishaInventors: Takeshi Iwasa, Tsutomu Ishida
-
Patent number: 9065359Abstract: An unnecessary vibration detection apparatus of a vibration type actuator includes an AC voltage generation unit that generates a plurality of AC voltages having a driving frequency; a vibration detection unit that outputs a vibration detection signal of the vibration type actuator; and an unnecessary vibration detection unit that detects an unnecessary vibration component by generating a signal for cancelling the vibration component of the driving frequency in the vibration detection signal by controlling amplitudes of a plurality of AC signals which are used for generating the plurality of AC voltages.Type: GrantFiled: March 12, 2013Date of Patent: June 23, 2015Assignee: Canon Kabushiki KaishaInventors: Takeshi Iwasa, Kenichi Kataoka
-
Patent number: 9054606Abstract: A driving device, including a drive signal generating section configured to variably control a frequency or an amplitude of an application voltage to a vibration member, includes a variable period setting section configured to output a value of a PWM period, the set value being set so that an average value of PWM periods in one target period of the application voltage is one fraction of an integer number of the target period by variably adjusting the PWM periods in an aperiodic manner; a drive waveform information output section; and a variable period PWM signal generating section configured to generate a PWM signal based on the set value of the PWM period output from the variable period setting section and drive waveform information of the application voltage, wherein the drive signal generating section is a digital circuit.Type: GrantFiled: June 6, 2013Date of Patent: June 9, 2015Assignee: Canon Kabushiki KaishaInventors: Takeshi Iwasa, Kenichi Kataoka
-
MEDICAL MANIPULATOR, MEDICAL SYSTEM INCLUDING THE SAME, MEDICAL PUNCTURING SYSTEM, AND BIOPSY SYSTEM
Publication number: 20150150637Abstract: The present invention relates to a medical manipulator equipped with a fail-safe mechanism capable of protecting a manipulator in an emergency. A medical manipulator includes a supporting section; a driving section supported by the supporting section and including a vibrating body in which vibration waves are excited by application of an alternating voltage, a movable body that moves relative to the vibrating body by receiving the vibration waves, and a pressurization unit configured to exert pressure between the vibrating body and the movable body; a manipulator section supported by the driving section; an emergency detecting unit configured to detect an emergency; and an interruption unit configured to interrupt transmission of torque between the manipulator section and the supporting section on the basis of an emergency detection signal transmitted from the emergency detecting unit.Type: ApplicationFiled: June 4, 2013Publication date: June 4, 2015Inventor: Takeshi Iwasa -
Publication number: 20150153435Abstract: The present invention relates to a medical apparatus which includes a motion mechanism which has at least one degree of freedom, an actuator configured to drive the motion mechanism and a control unit configured to control the actuator, and which operates in a magnetic field environment of an MRI, the medical apparatus including: a data storage unit in which data related to magnetic susceptibility of the actuator is stored; a calculating unit configured to calculate information related to an influence which the actuator exerts upon the magnetic field environment by calculation based on the magnetic susceptibility; and a communication unit configured to output the information to the MRI. An influence which an apparatus which operates in a strong magnetic field environment exerts upon an MR image can be reduced.Type: ApplicationFiled: May 22, 2013Publication date: June 4, 2015Inventor: Takeshi Iwasa
-
Publication number: 20140270825Abstract: A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.Type: ApplicationFiled: May 28, 2014Publication date: September 18, 2014Inventors: Takeshi Iwasa, Tsutomu Ishida
-
Patent number: 8774653Abstract: A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.Type: GrantFiled: June 10, 2009Date of Patent: July 8, 2014Assignee: Canon Kabushiki KaishaInventors: Takeshi Iwasa, Tsutomu Ishida
-
Publication number: 20130334988Abstract: A driving device, including a drive signal generating section configured to variably control a frequency or an amplitude of an application voltage to a vibration member, including: a variable period setting section configured to output a value of a PWM period, the set value being set so that an average value of PWM periods in one target period of the application voltage is one fraction of an integer number of the target period by variably adjusting the PWM periods in an aperiodic manner; a drive waveform information output section; and a variable period PWM signal generating section configured to generate a PWM signal based on the set value of the PWM period output from the variable period setting section and drive waveform information of the application voltage, wherein the drive signal generating section is a digital circuit.Type: ApplicationFiled: June 6, 2013Publication date: December 19, 2013Inventors: Takeshi Iwasa, Kenichi Kataoka
-
Publication number: 20130334405Abstract: An optical receiving circuit of an embodiment of the present invention includes a photo detector configured to receive an optical pulse signal and a load connected to the photo detector. A circuit comprises the photo detector and a resistance component of the load. This circuit is configured to output a non-pulse signal.Type: ApplicationFiled: June 11, 2013Publication date: December 19, 2013Inventor: Takeshi Iwasa
-
Publication number: 20130241446Abstract: An unnecessary vibration detection apparatus of a vibration type actuator includes an AC voltage generation unit that generates a plurality of AC voltages having a driving frequency; a vibration detection unit that outputs a vibration detection signal of the vibration type actuator; and an unnecessary vibration detection unit that detects an unnecessary vibration component by generating a signal for cancelling the vibration component of the driving frequency in the vibration detection signal by controlling amplitudes of a plurality of AC signals which are used for generating the plurality of AC voltages.Type: ApplicationFiled: March 12, 2013Publication date: September 19, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Takeshi Iwasa, Kenichi Kataoka
-
Patent number: 8294315Abstract: An inner-rotor brushless motor includes a holding member configured to hold a stator core. The holding member includes a mounting surface disposed perpendicular to a shaft and brought into contact with a mating member in which the inner-rotor brushless motor is installed; bent portions integrated with the mounting surface, bent upward so as to be substantially perpendicular to the mounting surface, and configured to hold the outer circumferential surface of the stator core; and mounting flanges used for fastening the motor to the mating member. The mounting surface, the bent portions, and the mounting flanges are integrated with each other.Type: GrantFiled: September 29, 2009Date of Patent: October 23, 2012Assignee: Canon Kabushiki KaishaInventors: Takeshi Iwasa, Hiromasa Masuta