Patents by Inventor Koichi Washisu
Koichi Washisu 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: 20120140086Abstract: An image pickup apparatus includes a first detection unit for detecting a rotation shake, a first computation unit for processing a detection signal of the rotation shake into a rotation shake correction target value, a second detection unit for detecting a parallel shake in a plane surface perpendicular to an optical axis, a second computation unit for process a detection signal of the parallel shake into a parallel shake correction target value, a shake correction unit for correcting an image shake in the plane surface of the image pickup apparatus based on the rotation and parallel shake correction target values, an initialization unit for initializing the parallel shake correction target value, and a control unit for moving the shake correction unit based on an image pickup start instruction prior to an image pickup operation while initializing the parallel shake correction target value.Type: ApplicationFiled: February 13, 2012Publication date: June 7, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Koichi Washisu
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Patent number: 8159545Abstract: An image stabilization control apparatus includes a vibration correction unit configured to correct an image shake occurring due to vibration, a first vibration detection unit configured to detect and output an angular velocity of the vibration, a second vibration detection unit configured to detect and output an acceleration of the vibration, a first extractor configured to extract a signal in a predetermined frequency band based on an output of the first vibration detection unit, a second extractor configured to extract a signal in a predetermined frequency band based on an output of the second vibration detection unit, an output correction unit configured to correct the output of the first vibration detection unit based on the signals extracted by the first and second extractors, and a driving unit configured to drive the vibration correction unit based on the output of the first vibration detection unit as corrected.Type: GrantFiled: July 14, 2009Date of Patent: April 17, 2012Assignee: Canon Kabushiki KaishaInventors: Koichi Washisu, Goro Noto, Junichi Saito
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Patent number: 8144203Abstract: An image pickup apparatus includes a first detection unit for detecting a rotation shake, a first computation unit for processing a detection signal of the rotation shake into a rotation shake correction target value, a second detection unit for detecting a parallel shake in a plane surface perpendicular to an optical axis, a second computation unit for process a detection signal of the parallel shake into a parallel shake correction target value, a shake correction unit for correcting an image shake in the plane surface of the image pickup apparatus based on the rotation and parallel shake correction target values, an initialization unit for initializing the parallel shake correction target value, and a control unit for moving the shake correction unit based on an image pickup start instruction prior to an image pickup operation while initializing the parallel shake correction target value.Type: GrantFiled: December 7, 2007Date of Patent: March 27, 2012Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Patent number: 8023809Abstract: An apparatus includes a vibration correction unit configured to correct an image shake occurring due to vibration, a first detection unit configured to detect an angular velocity of the vibration, a second detection unit configured to detect an acceleration of the vibration, a calculation unit configured to calculate a correction value based on the output of the first detection unit and the output of the second detection unit, an output correction unit configured to correct an output of the first detection unit based on the correction value and to change a frequency characteristic of a signal based on the output of the first detection unit to apply an apparent frequency-dependent characteristic to the correction value, and a driving unit configured to drive the vibration correction unit based on an output of the first detection unit, an output of the output correction unit, or a combined output thereof.Type: GrantFiled: July 14, 2009Date of Patent: September 20, 2011Assignee: Canon Kabushiki KaishaInventors: Koichi Washisu, Goro Noto, Junichi Saito
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Patent number: 7986853Abstract: An image processing apparatus, which obtains a synthesized image whose exposure is corrected by synthesizing a first image and a second image, is disclosed. The image processing apparatus comprises a detection section which detects an amount of displacement of the second image with respect to the first image which is a reference image, a coordinate conversion section which performs coordinate conversion to the second image so as to conform to the first image, and a synthesis section which synthesizes the second image having been subjected to the coordinate conversion with the first image.Type: GrantFiled: June 9, 2010Date of Patent: July 26, 2011Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Patent number: 7983546Abstract: The optical image stabilizer (100) includes a first movable part including a first lens (11a) having one of positive and negative optical powers, a second movable part including a second lens (11b) having the other of the optical powers, and an actuator driving the first and second movable parts in the directions opposite to each other with respect to a supporting member (13). The actuator includes a first element (110a, 110b) provided on the supporting member, a second element (16a, 16b) provided on the first movable part and facing a first face of the first element, and a third element (16c, 16d) provided on the second movable part and facing a second face formed on an opposite side of the first element from the first face. The first element is one of a magnet and a coil, and the second element and the third element are the other of them.Type: GrantFiled: May 16, 2008Date of Patent: July 19, 2011Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Patent number: 7925144Abstract: An image stabilizing apparatus is disclosed which is capable of sufficiently correcting shift shakes even with a small and lightweight accelerometer. The apparatus includes an angular velocity detector which detects angular velocity generated by a shake, an angular velocity computing unit which processes an angular velocity signal, the unit processing the angular velocity signal with a first frequency characteristic, an acceleration detector which detects acceleration generated by the shake, an acceleration computing unit which processes an acceleration signal, the unit processing the acceleration signal with a second frequency characteristic having a signal processing band narrower than the first frequency characteristic, an adder which adds an output signal from the angular velocity computing unit to an output signal from the acceleration computing unit, and an image stabilizing mechanism which performs an image stabilizing operation based on an output signal from the adder.Type: GrantFiled: September 11, 2009Date of Patent: April 12, 2011Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Publication number: 20110063458Abstract: An image stabilization control apparatus including a mechanism which causes a vibration when the mechanism moves is disclosed. The apparatus comprises a vibration correction unit configured to correct image shake occurring due to vibration applied to the image stabilization control apparatus. A correction value of an angular velocity of the vibration is calculated based on signals based on the angular velocity and an acceleration of the vibration, frequency bands of the signals are narrowed. During the mechanism is moving, the image shake is corrected by driving the vibration correction unit based on the angular velocity of the vibration which is corrected by the corrected value calculated before the mechanism moves.Type: ApplicationFiled: July 10, 2009Publication date: March 17, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Koichi Washisu, Goro Noto, Junichi Saito
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Publication number: 20110022403Abstract: A sound recording apparatus having a driving unit generates a sound signal from an input sound, detects the level of the sound signal, adjusts the level of the generated sound signal at an amplification factor corresponding to the detected level, and processes the adjusted sound signal to prevent an amplified sound signal from containing a sound signal generated upon driving the driving unit. The sound recording apparatus controls to replace a sound signal in a predetermined period after instructing driving of the driving unit with a signal calculated from a sound signal in the first period after the predetermined period, and to substantially equalize an amplification factor when driving of the driving unit is instructed and that in the first period.Type: ApplicationFiled: July 9, 2010Publication date: January 27, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Koichi Washisu, Masafumi Kimura, Fumihiro Kajimura
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Publication number: 20100238320Abstract: An image processing apparatus, which obtains a synthesized image whose exposure is corrected by synthesizing a first image and a second image, is disclosed. The image processing apparatus comprises a detection section which detects an amount of displacement of the second image with respect to the first image which is a reference image, a coordinate conversion section which performs coordinate conversion to the second image so as to conform to the first image, and a synthesis section which synthesizes the second image having been subjected to the coordinate conversion with the first image.Type: ApplicationFiled: June 9, 2010Publication date: September 23, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Koichi Washisu
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Patent number: 7756354Abstract: An image processing apparatus, which obtains a synthesized image whose exposure is corrected by synthesizing a first image and a second image, is disclosed. The image processing apparatus comprises a detection section which detects an amount of displacement of the second image with respect to the first image which is a reference image, a coordinate conversion section which performs coordinate conversion to the second image so as to conform to the first image, and a synthesis section which synthesizes the second image having been subjected to the coordinate conversion with the first image.Type: GrantFiled: May 24, 2004Date of Patent: July 13, 2010Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Publication number: 20100118402Abstract: The optical image stabilizer (100) includes a first movable part including a first lens (11a) having one of positive and negative optical powers, a second movable part including a second lens (11b) having the other of the optical powers, and an actuator driving the first and second movable parts in the directions opposite to each other with respect to a supporting member (13). The actuator includes a first element (110a, 110b) provided on the supporting member, a second element (16a, 16b) provided on the first movable part and facing a first face of the first element, and a third element (16c, 16d) provided on the second movable part and facing a second face formed on an opposite side of the first element from the first face. The first element is one of a magnet and a coil, and the second element and the third element are the other of them.Type: ApplicationFiled: May 16, 2008Publication date: May 13, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Koichi Washisu
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Publication number: 20100079604Abstract: An optical apparatus includes a lens frame 12 which holds a focus correction lens 11a and is movable in an optical axis direction, optical axis direction position detectors 19a to 19c which are arranged on one of the lens frame 12 and a supporting portion 13 inside a barrel and detect signals in accordance with a distance to the other one, driving portions 112a to 112c and coils 17a to 17c (driver) which drive the lens frame 12 in the optical axis direction, an optical axis direction movement limiting member of the lens frame, and a lens CPU 1204 (controller) which controls the driver so as to suppress a tilt of the focus correction lens 11a based on a signal detected by the optical axis direction position detectors 19a to 19c whose sensitivities have been calibrated in association with the driving portions and the optical axis direction movement limiting member.Type: ApplicationFiled: September 24, 2009Publication date: April 1, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Koichi Washisu
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Publication number: 20100074605Abstract: An image stabilizing apparatus is disclosed which is capable of sufficiently correcting shift shakes even with a small and lightweight accelerometer. The apparatus includes an angular velocity detector which detects angular velocity generated by a shake, an angular velocity computing unit which processes an angular velocity signal, the unit processing the angular velocity signal with a first frequency characteristic, an acceleration detector which detects acceleration generated by the shake, an acceleration computing unit which processes an acceleration signal, the unit processing the acceleration signal with a second frequency characteristic having a signal processing band narrower than the first frequency characteristic, an adder which adds an output signal from the angular velocity computing unit to an output signal from the acceleration computing unit, and an image stabilizing mechanism which performs an image stabilizing operation based on an output signal from the adder.Type: ApplicationFiled: September 11, 2009Publication date: March 25, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Koichi Washisu
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Publication number: 20100013937Abstract: An image stabilization control apparatus includes a vibration correction unit configured to correct an image shake occurring due to vibration, a first vibration detection unit configured to detect and output an angular velocity of the vibration, a second vibration detection unit configured to detect and output an acceleration of the vibration, a first extractor configured to extract a signal in a predetermined frequency band based on an output of the first vibration detection unit, a second extractor configured to extract a signal in a predetermined frequency band based on an output of the second vibration detection unit, an output correction unit configured to correct the output of the first vibration detection unit based on the signals extracted by the first and second extractors, and a driving unit configured to drive the vibration correction unit based on the output of the first vibration detection unit as corrected.Type: ApplicationFiled: July 14, 2009Publication date: January 21, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Koichi Washisu, Goro Noto, Junichi Saito
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Publication number: 20100014847Abstract: An apparatus includes a vibration correction unit configured to correct an image shake occurring due to vibration, a first detection unit configured to detect an angular velocity of the vibration, a second detection unit configured to detect an acceleration of the vibration, a calculation unit configured to calculate a correction value based on the output of the first detection unit and the output of the second detection unit, an output correction unit configured to correct an output of the first detection unit based on the correction value and to change a frequency characteristic of a signal based on the output of the first detection unit to apply an apparent frequency-dependent characteristic to the correction value, and a driving unit configured to drive the vibration correction unit based on an output of the first detection unit, an output of the output correction unit, or a combined output thereof.Type: ApplicationFiled: July 14, 2009Publication date: January 21, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Koichi Washisu, Goro Noto, Junichi Saito
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Patent number: 7634178Abstract: An image stabilizing apparatus and an image pickup apparatus that can detect shift shake reliably with a simple configuration and make highly accurate image blur correction possible even at very short subject distances. The apparatus has an angular velocity detector for detecting the angular velocity generated by shaking of the apparatus, an acceleration detector for detecting acceleration generated by the shaking, tor for calculating a correction value from the angular velocity, an acceleration corrector for correcting the acceleration based on the shake correction value, and a blur corrector for correcting image blur by decentering an optical axis based on an output of the acceleration corrector and an output of the calculator.Type: GrantFiled: December 19, 2006Date of Patent: December 15, 2009Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Patent number: 7634181Abstract: An image stabilizing system performs rotational-shake correction to increase focus precision so that shift shake correction can be performed with high precision based on highly accurate image magnification information obtained by the high focus precision.Type: GrantFiled: September 11, 2007Date of Patent: December 15, 2009Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Patent number: 7616879Abstract: There is provided an optical apparatus that provides quick and precise TTL phase difference detection and pupil slicing focus detection. An optical apparatus includes a first optical element for splitting a first polarized light component contained in light that passes an exit pupil of a first optical system and directs to a photoelectric conversion element so that the first polarized light component direct to different light-receiving areas on the photoelectric conversion element. The optical apparatus may further include a second optical element for separating a second polarized light component contained in the light from said first optical element, from the first polarized light component.Type: GrantFiled: October 5, 2005Date of Patent: November 10, 2009Assignee: Canon Kabushiki KaishaInventors: Akihiko Nagano, Makoto Takamiya, Koichi Washisu
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Patent number: 7609950Abstract: An image stabilizing apparatus is disclosed which is capable of sufficiently correcting shift shakes even with a small and lightweight accelerometer. The apparatus includes an angular velocity detector which detects angular velocity generated by a shake, an angular velocity computing unit which processes an angular velocity signal, the unit processing the angular velocity signal with a first frequency characteristic, an acceleration detector which detects acceleration generated by the shake, an acceleration computing unit which processes an acceleration signal, the unit processing the acceleration signal with a second frequency characteristic having a signal processing band narrower than the first frequency characteristic, an adder which adds an output signal from the angular velocity computing unit to an output signal from the acceleration computing unit, and an image stabilizing mechanism which performs an image stabilizing operation based on an output signal from the adder.Type: GrantFiled: February 6, 2007Date of Patent: October 27, 2009Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu