Patents by Inventor Nobushige Wakamatsu
Nobushige Wakamatsu 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).
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Publication number: 20150036011Abstract: The CPU acquires the output of an angular velocity sensor and performs image shake correction. An angle 1 calculating unit integrates a signal from which an offset component is removed to calculate an angle 1. An angular velocity subtraction amount calculating unit calculates an angular velocity subtraction amount based on a signal obtained by subtracting a first offset from the output of the angular velocity sensor and a signal obtained by subtracting a second offset from the output of the angle 2 calculating unit. An angle 2 calculating unit integrates a signal obtained by subtracting the angular velocity subtraction amount from the output of the angular velocity sensor to calculate an angle 2. The CPU performs image shake correction based on the angle 1 prior to operation of a release SW, whereas the CPU performs image shake correction based on the angle 2 after operation of the release SW.Type: ApplicationFiled: July 24, 2014Publication date: February 5, 2015Inventor: Nobushige Wakamatsu
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Publication number: 20150036007Abstract: An imaging apparatus includes an angular velocity sensor for detecting shake thereof. A CPU calculates an image shake correction amount. A shake correcting unit corrects image shake based on the calculated image shake correction amount. An HPF removes an offset component from a shake detection signal. A reference value calculating unit calculates an offset reference value (initial offset) for the shake detection signal. The CPU performs image shake correction control by calculating an image shake correction amount from the output of the HPF during the time period until the reference value calculating unit calculates an offset reference value after start of the operation of the angular velocity sensor. The CPU performs image shake correction control by calculating an image shake correction amount from a signal obtained by subtracting the offset reference value from the shake detection signal after the reference value calculating unit calculates the offset reference value.Type: ApplicationFiled: July 22, 2014Publication date: February 5, 2015Inventor: Nobushige Wakamatsu
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Publication number: 20140347506Abstract: An image capturing apparatus detects the angular rotational shake and translational shake generated in the apparatus using an angular velocity sensor and an accelerometer. An angular rotational shake correction coefficient calculation unit calculates a first correction coefficient using a zoom lens position and a focus lens position. A translational shake correction coefficient calculation unit calculates a second correction coefficient using the imaging magnification of an imaging optical system.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Patent number: 8873942Abstract: The image capturing apparatus detects a rotational shake and translational shake produced by an apparatus by a rotational velocity meter and an acceleration meter. A rotational shake compensation coefficient calculation unit calculates a compensation (correction) coefficient in relation to rotational shake. A translational shake compensation coefficient calculation unit calculates a compensation (correction) coefficient in relation to translational shake. When calculating the compensation amount in relation to rotational shake and translational shake using the respective compensation (correction) coefficients, the camera CPU acquires information indicating a degree of focus of the imaging optical system, and suppresses variation in the compensation amount by reducing the compensation (correction) coefficient when the degree of focus is low.Type: GrantFiled: June 7, 2012Date of Patent: October 28, 2014Assignee: Canon Kabushiki KaishaInventor: Nobushige Wakamatsu
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Patent number: 8830336Abstract: An image capturing apparatus detects the angular rotational shake and translational shake generated in the apparatus using an angular velocity sensor and an accelerometer. The camera CPU computes a correction amount for angular rotational and translational shake using the first correction coefficient calculated by an angular rotational shake correction coefficient calculation unit and the second correction coefficient calculated by a translational shake correction coefficient calculation unit, produces both of the correction amounts to thereby calculate an image shake correction amount so as to suppress an increase in an image magnification for controlling image stabilization in a direction of increasing an imaging magnification. A driving unit drives a shake correction unit in accordance with an image shake correction amount, and a shake correction unit corrects image shake generated in the image surface of an imaging optical system.Type: GrantFiled: October 12, 2011Date of Patent: September 9, 2014Assignee: Canon Kabushiki KaishaInventor: Nobushige Wakamatsu
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Publication number: 20140037279Abstract: A shake correction apparatus comprises a shake detection unit which detects a shake of an image capture apparatus, a calculation unit which calculates a shake correction amount for correcting an image blur based on an output from the shake detection unit, a shake correction unit which corrects the image blur based on the shake correction amount, a shake level determination unit which determines a shake level of the image capture apparatus based on an output from the shake detection unit, an offset determination unit which determines an offset value based on the shake correction amount and the shake level, and a subtraction unit which subtracts the offset value from the output from the shake detection unit.Type: ApplicationFiled: October 8, 2013Publication date: February 6, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Patent number: 8577214Abstract: A shake correction apparatus comprises a shake detection unit which detects a shake of an image capture apparatus, a calculation unit which calculates a shake correction amount for correcting an image blur based on an output from the shake detection unit, a shake correction unit which corrects the image blur based on the shake correction amount, a shake level determination unit which determines a shake level of the image capture apparatus based on an output from the shake detection unit, an offset determination unit which determines an offset value based on the shake correction amount and the shake level, and a subtraction unit which subtracts the offset value from the output from the shake detection unit.Type: GrantFiled: December 20, 2012Date of Patent: November 5, 2013Assignee: Canon Kabushiki KaishaInventor: Nobushige Wakamatsu
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Patent number: 8509609Abstract: An image stabilization control apparatus having a compensation member comprises: first and second detection units that detect rotational and translational shakes, respectively, in the image stabilization control apparatus; a rotational shake amount calculation unit that finds a rotational shake amount based on an output of the first detection unit; a correction value calculation unit that calculates a correction value based on outputs from the first and second detection units; a suppression unit that suppresses the correction value based on the size of an output from the first and/or second detection units; a translational shake amount calculation unit that calculates a translational shake amount using the output of the first detection unit and the calculated correction value; and a driving unit that drives the compensation member based on the rotational and translational shake amounts, wherein the correction value is calculated based on the suppressed correction value.Type: GrantFiled: July 26, 2011Date of Patent: August 13, 2013Assignee: Canon Kabushiki KaishaInventor: Nobushige Wakamatsu
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Patent number: 8509610Abstract: An image stabilization control apparatus corrects image shake, which is caused by the shake of a camera, using a shake correction unit. An angular velocity sensor detects angular rotational shake in the yaw direction, and an angular velocity sensor detects angular rotational shake in the roll direction. An accelerometer detects acceleration in the horizontal direction. A camera CPU calculates a first correction amount for use in the correction of translational shake in the yaw direction using the outputs of the angular velocity sensor and the accelerometer, and calculates a second correction amount for use in the correction of translational shake in the roll direction using the outputs of the angular velocity sensor and the accelerometer. A driving unit drives a shake correction unit in accordance with the correction amount of translational shake.Type: GrantFiled: October 12, 2011Date of Patent: August 13, 2013Assignee: Canon Kabushiki KaishaInventor: Nobushige Wakamatsu
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Patent number: 8351772Abstract: A shake correction apparatus comprises a shake detection unit which detects a shake of an image capture apparatus, a calculation unit which calculates a shake correction amount for correcting an image blur based on an output from the shake detection unit, a shake correction unit which corrects the image blur based on the shake correction amount, a shake level determination unit which determines a shake level of the image capture apparatus based on an output from the shake detection unit, an offset determination unit which determines an offset value based on the shake correction amount and the shake level, and a subtraction unit which subtracts the offset value from the output from the shake detection unit.Type: GrantFiled: January 19, 2011Date of Patent: January 8, 2013Assignee: Canon Kabushiki KaishaInventor: Nobushige Wakamatsu
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Publication number: 20130004151Abstract: A rotational shake compensation calculation unit in an image capturing apparatus calculates rotational shake produced by apparatus rotation about an axis orthogonal to an optical axis of an imaging optical system, thereby calculating a compensation amount for image shake. A translational shake compensation calculation unit calculates a compensation amount for image shake resulting from translational shake produced in a travel direction of the apparatus along a direction orthogonal to an optical axis of the optical system. An estimating device estimates translational shake using a vibration model. A translational shake compensation amount calculation unit calculates a translation shake compensation amount based on the estimation amount and varies the translation shake compensation amount in response to the compensation range of the shake compensation unit of the focal distance of the optical system.Type: ApplicationFiled: June 7, 2012Publication date: January 3, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Publication number: 20130004150Abstract: The image capturing apparatus detects a rotational shake and translational shake produced by an apparatus by a rotational velocity meter and an acceleration meter. A rotational shake compensation coefficient calculation unit calculates a compensation (correction) coefficient in relation to rotational shake. A translational shake compensation coefficient calculation unit calculates a compensation (correction) coefficient in relation to translational shake. When calculating the compensation amount in relation to rotational shake and translational shake using the respective compensation (correction) coefficients, the camera CPU acquires information indicating a degree of focus of the imaging optical system, and suppresses variation in the compensation amount by reducing the compensation (correction) coefficient when the degree of focus is low.Type: ApplicationFiled: June 7, 2012Publication date: January 3, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Publication number: 20120315025Abstract: A shake compensation apparatus includes a shake compensation unit configured to compensate the shake by moving non-parallel to an optical axis; a driving unit configured to drive the shake compensation unit based on a drive indication signal; a position detection unit configured to detect the position of the shake compensation unit to output a position detection signal; and a compensation amount calculation unit configured to detect translational shake component in the shake of the apparatus from the movement of the shake compensation unit such that the drive indication signal and the position detection signal serve as input, and calculate the compensation amount of the shake compensation unit from the shake amount of the apparatus including the translational shake component to output it as a drive indication signal.Type: ApplicationFiled: June 8, 2012Publication date: December 13, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige WAKAMATSU
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Patent number: 8322728Abstract: The present invention provides a suspension control apparatus requiring a reduced number of sensors. A pitch rate estimating unit 21 calculates a pitch rate used for creating a control instruction value, with use of a wheel-speed time-rate-of change obtained based on wheel speeds vcFL and vcFR detected by wheel speed sensors 7FL and 7FR, and an estimated forward/backward acceleration aes calculated by a forward/backward acceleration estimating unit 20.Type: GrantFiled: September 24, 2008Date of Patent: December 4, 2012Assignee: Hitachi, Ltd.Inventors: Ryusuke Hirao, Takahide Kobayashi, Nobushige Wakamatsu
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Publication number: 20120093493Abstract: An image stabilization control apparatus corrects image shake, which is caused by the shake of a camera, using a shake correction unit. An angular velocity sensor detects angular rotational shake in the yaw direction, and an angular velocity sensor detects angular rotational shake in the roll direction. An accelerometer detects acceleration in the horizontal direction. A camera CPU calculates a first correction amount for use in the correction of translational shake in the yaw direction using the outputs of the angular velocity sensor and the accelerometer, and calculates a second correction amount for use in the correction of translational shake in the roll direction using the outputs of the angular velocity sensor and the accelerometer. A driving unit drives a shake correction unit in accordance with the correction amount of translational shake.Type: ApplicationFiled: October 12, 2011Publication date: April 19, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Publication number: 20120092511Abstract: An image capturing apparatus detects the angular rotational shake and translational shake generated in the apparatus using an angular velocity sensor and an accelerometer. The camera CPU computes a correction amount for angular rotational and translational shake using the first correction coefficient calculated by an angular rotational shake correction coefficient calculation unit and the second correction coefficient calculated by a translational shake correction coefficient calculation unit, produces both of the correction amounts to thereby calculate an image shake correction amount so as to suppress an increase in an image magnification for controlling image stabilization in a direction of increasing an imaging magnification. A driving unit drives a shake correction unit in accordance with an image shake correction amount, and a shake correction unit corrects image shake generated in the image surface of an imaging optical system.Type: ApplicationFiled: October 12, 2011Publication date: April 19, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Publication number: 20120033954Abstract: An image stabilization control apparatus having a compensation member comprises: first and second detection units that detect rotational and translational shakes, respectively, in the image stabilization control apparatus; a rotational shake amount calculation unit that finds a rotational shake amount based on an output of the first detection unit; a correction value calculation unit that calculates a correction value based on outputs from the first and second detection units; a suppression unit that suppresses the correction value based on the size of an output from the first and/or second detection units; a translational shake amount calculation unit that calculates a translational shake amount using the output of the first detection unit and the calculated correction value; and a driving unit that drives the compensation member based on the rotational and translational shake amounts, wherein the correction value is calculated based on the suppressed correction value.Type: ApplicationFiled: July 26, 2011Publication date: February 9, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Publication number: 20110194847Abstract: A shake correction apparatus comprises a shake detection unit which detects a shake of an image capture apparatus, a calculation unit which calculates a shake correction amount for correcting an image blur based on an output from the shake detection unit, a shake correction unit which corrects the image blur based on the shake correction amount, a shake level determination unit which determines a shake level of the image capture apparatus based on an output from the shake detection unit, an offset determination unit which determines an offset value based on the shake correction amount and the shake level, and a subtraction unit which subtracts the offset value from the output from the shake detection unit.Type: ApplicationFiled: January 19, 2011Publication date: August 11, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Nobushige Wakamatsu
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Publication number: 20090085309Abstract: The present invention provides a suspension control apparatus requiring a reduced number of sensors. A pitch rate estimating unit 21 calculates a pitch rate used for creating a control instruction value, with use of a wheel-speed time-rate-of change obtained based on wheel speeds vcFL and vcFR detected by wheel speed sensors 7FL and 7FR, and an estimated forward/backward acceleration aes calculated by a forward/backward acceleration estimating unit 20.Type: ApplicationFiled: September 24, 2008Publication date: April 2, 2009Inventors: Ryusuke Hirao, Takahide Kobayashi, Nobushige Wakamatsu