Camera Shake Sensing Patents (Class 396/52)
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Publication number: 20070183761Abstract: An imaging apparatus that photographs a subject to obtain digital image information includes: a photographing operation detection unit that detects angular rate data in a photographing operation over a predetermined sampling period; a polynomial coefficient calculation unit that approximates the angular rate data over each sampling period detected by the photographing operation detection unit to a polynomial and calculates coefficients of the approximated polynomial; and a coefficient storage unit that stores the coefficients of the polynomial calculated by the polynomial coefficient calculation unit.Type: ApplicationFiled: February 7, 2007Publication date: August 9, 2007Applicant: SEIKO EPSON CORPORATIONInventor: Michio KOBAYASHI
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Publication number: 20070166020Abstract: A camera system in normal mode and hand jitter reduction (hjr) mode may comprise generating a first exposure time-gain product by multiplying the normal mode exposure time with the normal mode gain. It may further comprise modifying the normal mode exposure time and gain and multiplying these modified parameters to generate a second exposure time-gain product for a hjr mode that reduces the difference between the first exposure time-gain product and the second exposure time-gain product. To reduce the difference the normal mode frame rate may also be modified. Operation of a camera in normal mode may be in response to a sensed light level being above a threshold. The hjr mode may be selected by the user while the camera is operating. The hjr mode may be used in response to a sensed light level being lower than the threshold.Type: ApplicationFiled: September 25, 2006Publication date: July 19, 2007Inventors: Shuxue Quan, Chinchuan Andrew Chiu, Xiaoyun Jiang, Jingqiang Li, Ying Xie Noyes, Kalin Atanassov
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Patent number: 7239342Abstract: An object of the present invention is to generate an image which is prevented from being influenced by a movement while suppressing increase in noise components. When a movement is detected during exposure of an image capturing device to light, an image capturing apparatus stops the exposure of the image capturing device and amplifies an image signal obtained with the exposure, thereby compensating exposure shortage. Luminance information is extracted from a captured image, and color information is extracted from a live view image obtained at a timing different from a timing at which the captured image is obtained. By synthesizing the luminance information of the captured image and the color information of the live view image, noise components included in color information are reduced.Type: GrantFiled: May 28, 2003Date of Patent: July 3, 2007Assignee: Minolta Co., Ltd.Inventors: Yasuhiro Kingetsu, Kenji Nakamura
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Patent number: 7218457Abstract: Providing an interchangeable lens capable of carrying out quick focus from infinity to a close object with a magnification of almost life size by a light-weight moving lens group, exhibiting excellent imaging performance across an entire focusing range, and obtaining excellent imaging performance by a vibration reduction lens and its drive system appropriately arranged even upon vibration reduction. The lens includes a first group having positive power, a second group having negative power, a third group having positive power, and a fourth group having negative power. The fourth group includes a front group having negative power and a rear group having positive power. When the lens is vibrated, the lens corrects image blur by shifting the front group almost perpendicularly to an optical axis. When focusing from infinity to a close object, the first and the front groups are fixed and at least the third group is moved toward the object side.Type: GrantFiled: September 29, 2005Date of Patent: May 15, 2007Assignee: Nikon CorporationInventor: Takayuki Sensui
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Patent number: 7208905Abstract: The driving method of the present invention is a driving method to drive a stepping motor driven by a predetermined driving pulse, by the servo driving method, and is characterized in that a predetermined sampling period is set, and the generation condition of the driving pulse to drive the stepping motor is set at the sampling periods. Thereby, the stepping motor can be driven while the most suitable driving condition is determined at the predetermined sampling periods. That is, since the driving condition of the stepping motor can be changed at the sampling periods, even when the stepping motor driven by the driving pulse is the driving source, appropriate servo control can be realized.Type: GrantFiled: October 25, 2005Date of Patent: April 24, 2007Assignee: Konica Minolta Photo Imaging, Inc.Inventor: Kazuhiro Shibatani
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Patent number: 7162151Abstract: A camera comprises an optical photographing system, an image pickup device which receives a luminous flux via the optical photographing system to output image data, a monitor on which an image is displayed based on the image data, an actuator which controls a position of the image pickup device to obtain the image data in which an influence of camera shake is reduced, and a camera shake detecting section which detects a camera shake state. In the camera, the image data at the time of non-operation of the actuator is processed/formed from the image data obtained at this time and the camera shake state detected by the camera shake detecting section, and a control is executed in such a manner that the image data at the time of the non-operation of the actuator and the image data at the time of operation of the actuator are displayed on the monitor.Type: GrantFiled: August 4, 2004Date of Patent: January 9, 2007Assignee: Olympus CorporationInventors: Osamu Nonaka, Yuji Imai
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Patent number: 7123290Abstract: A blur correction device comprises a blur correction optical system that corrects an image blur caused by a vibration; a drive device that drives the blur correction optical system; a locking device that locks the blur correction optical system when an image blur correction is not executed; a gravitational direction detection device that detects a direction of a gravitational force applied to the blur correction optical system; and a control device that controls drive of the drive device and the locking device. After stopping an operation executed by the drive device to correct the image blur, the control device controls the drive device so as to reduce an extent to which the blur correction optical system having been locked by the locking device is allowed to move along the gravitational direction.Type: GrantFiled: February 19, 2003Date of Patent: October 17, 2006Assignee: Nikon CorporationInventor: Sueyuki Ohishi
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Image sensing apparatus and method performing blur correction using electrical coordinate conversion
Patent number: 7095001Abstract: An image sensing apparatus performs a plurality of times of image sensing on a subject, superpose-combines the obtained plurality of subject images into one subject image. The apparatus has an image sensing unit that converts a subject optical image into an electric signal, an optical unit that changes a view angle, and a change unit that changes the position of the optical unit by a predetermined amount so as to widen the view angle by a predetermined amount, prior to the plurality of times of image sensing.Type: GrantFiled: August 26, 2004Date of Patent: August 22, 2006Assignee: Canon Kabushiki KaishaInventor: Hideo Kawahara -
Patent number: 6970305Abstract: A lock pin is inserted into a hole of a lens holding frame in order to lock a blur correction lens when blur correction is not executed. An optical axis of the blur correction lens and an optical axis of a photographic optical system match when the blur correction lens and the lens holding frame have fallen in the gravitational direction by their own weight and the lock pin and the hole have come into contact with each other.Type: GrantFiled: September 29, 2004Date of Patent: November 29, 2005Assignee: Nikon CorporationInventors: Yuichi Katagishi, Noriyasu Kotani
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Patent number: 6965397Abstract: A system is disclosed for using camera attitude sensors with a camera. A camera assembly includes a tripod base, a tripod head interface mounted on the tripod base, a tripod head mounted on the tripod head interface and a camera mounted on the tripod head. The tripod head enables the camera to pan and tilt. The system also includes a first optical encoder for detecting the amount that the camera has been panned and a second optical encoder for detecting the amount that the camera has been tilted. Two inclinometers are mounted on the tripod head interface to measure attitude of the tripod head. Two gyroscopes (“gyros”) are mounted on the camera assembly. Data from the encoders, gyros and inclinometers are packaged and sent to graphics production equipment to be used for enhancing video captured by the camera.Type: GrantFiled: December 27, 1999Date of Patent: November 15, 2005Assignee: Sportvision, Inc.Inventors: Stanley K. Honey, Richard H. Cavallaro, Marvin S. White, Terence J. O'Brien, Matthew T. Lazar, Stuart K. Neubarth, Alan C. Phillips, Kenneth A. Milnes
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Patent number: 6961518Abstract: A camera having a camera-blur warning function which is adapted to switch between executing a camera-blur detecting mode and stopping the camera-blur detecting mode by the setting of a camera strobe mode. In a photographing scene where occurrence of a camera-blur is on a user's mind, a camera-blur detecting mode is set, thereby to detect vibration. In case any camera-blur occurs, warning is made so that the user may recognize it. Furthermore, at the time of determining holding, a conventional optical sensor which is already mounted as a sensor for measuring distance is utilized for determining the camera-blur.Type: GrantFiled: January 7, 2005Date of Patent: November 1, 2005Assignee: Olympus Optical Co., Ltd.Inventor: Takashi Suzuki
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Patent number: 6944395Abstract: An image sensing apparatus includes: a yaw sensor for detecting a shake of the image sensing apparatus in a yaw direction, a pitch sensor for detecting a shake of the image sensing apparatus in a pitch direction, the pitch sensor having a detection precision higher than the yaw sensor, and a shake correcting section for correcting a shake of the image sensing apparatus based on an output signal from the yaw sensor and an output signal from the pitch sensor. The shake correction can be performed with higher precision.Type: GrantFiled: September 5, 2003Date of Patent: September 13, 2005Assignee: Minolta Co., Ltd.Inventor: Yoshihiro Hara
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Patent number: 6940542Abstract: Detection information for shake is detected by a shake detection unit, predictive shake information is calculated based on the shake detection information, a start position (center) of a correcting operation on an imaging surface of a shake correction unit is determined, and driving of the shake correction unit at the correcting-operation start position is controlled. Accordingly, it is possible to make effective use of a movable range of the shake correction unit for actual hand shake or the like. Thus, a high degree of correction effect can be obtained, so that imaging failures due to hand shake or the like can be remarkably reduced.Type: GrantFiled: July 10, 2001Date of Patent: September 6, 2005Assignee: Ricoh Company, LTDInventors: Tomofumi Kitazawa, Takashi Kitaguchi, Hiromasa Shimizu, Masayoshi Katoh, Yasuhiro Sato, Saburoh Sasaki, Akihiro Etoh
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Patent number: 6922524Abstract: A camera having a blur notifying function according to one aspect of the present invention has a blur mode setting section which is used to set a blur notification mode in which a blur is detected in the camera and a blur state is notified, a blur detection section which detects a blur state of the camera, a blur calculation section which calculates a generated blur state quantity based on an output from the blur detection section, a blur judgment section which judges a blur state based on the generated blur state quantity, and a blur notification section which performs a notification operation concerning occurrence of a blur state based on a judgment result of the blur judgment section, the blur notification section starting the notification operation when the blur mode setting section sets the blur notification mode.Type: GrantFiled: November 18, 2003Date of Patent: July 26, 2005Assignee: Olympus CorporationInventor: Tatsuya Sato
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Patent number: 6909545Abstract: Binocular vibration correcting device comprises left and right vibration-correcting optical systems that correct images by being driven in the yaw and pitch directions in accordance with vibration. Optical system holding members hold the left and right vibration-correcting optical systems. Intermediate supporting member supports the optical system holding members so as to be able to rotate in the yaw direction and is supported by a main body member so as to be able to rotate in the pitch direction. The optical system holding members are connected so as to be able to rotate in the yaw direction at a position distanced in the optical axis direction away from the yaw direction rotational axes of the optical system holding members.Type: GrantFiled: December 20, 2001Date of Patent: June 21, 2005Assignee: Canon Kabushiki KaishaInventors: Hironori Takano, Haruhiko Yamanouchi
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Publication number: 20040263635Abstract: An imaging element converts an optical image acquired by the optical system, into an electric signal. A camera-signal processing unit processes the electric signal. From the electric signal, an automatic iris-detecting unit generates iris information representing the brightness of the object. A hand-tremble-degree detecting unit determines whether the hand-tremble information represents a high-degree hand tremble or a low-degree hand tremble, from the iris information generated by the automatic iris-detecting unit and shutter-speed information that sets an exposure time for the imaging element. The detecting unit outputs hand-tremble-degree information that represents a high-degree hand tremble or a low-degree hand tremble. A display control means causes a display unit to display a first mark when the hand-tremble-degree information represents a low-degree hand tremble.Type: ApplicationFiled: May 18, 2004Publication date: December 30, 2004Applicant: Kabushiki Kaisha ToshibaInventors: Takato Katagiri, Shiro Nagaoka
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Patent number: 6819503Abstract: A lock pin is inserted into a hole of a lens holding frame in order to lock a blur correction lens when blur correction is not executed. An optical axis of the blur correction lens and an optical axis of a photographic optical system match when the blur correction lens and the lens holding frame have fallen in the gravitational direction by their own weight and the lock pin and the hole have come into contact with each other.Type: GrantFiled: October 21, 2003Date of Patent: November 16, 2004Assignee: Nikon CorporationInventors: Yuichi Katagishi, Noriyasu Kotani
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Publication number: 20040218914Abstract: A camera having a blur notifying function according to one aspect of the present invention has a blur mode setting section which is used to set a blur notification mode in which a blur is detected in the camera and a blur state is notified, a blur detection section which detects a blur state of the camera, a blur calculation section which calculates a generated blur state quantity based on an output from the blur detection section, a blur judgment section which judges a blur state based on the generated blur state quantity, and a blur notification section which performs a notification operation concerning occurrence of a blur state based on a judgment result of the blur judgment section, the blur notification section starting the notification operation when the blur mode setting section sets the blur notification mode.Type: ApplicationFiled: November 18, 2003Publication date: November 4, 2004Inventor: Tatsuya Sato
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Patent number: 6813436Abstract: A digital watermark detection circuit detects a digital watermark inserted in an input signal. When the digital watermark detection circuit detects a digital watermark indicating the prohibition of duplication, a record controlling circuit controls a recording circuit and a recording drive to stop recording and prohibit recording to a recording medium for a predetermined time.Type: GrantFiled: August 29, 2000Date of Patent: November 2, 2004Assignee: Sony CorporationInventor: Jun Hirai
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Patent number: 6768587Abstract: A first frame holds a second frame which holds two correction lenses. Two guide pins, fixed on the first frame, pierce through two guide holes extending in a lengthwise direction. A first actuator including a motor and a shaft moved in the lengthwise direction in accordance with the rotation of the motor moves the first frame in the lengthwise direction. One of the guide pins is in contact with one end of the shaft. The tip end of a pressing member mounted on another of the guide pins is in point-contact with another end surface of the shaft, pressing the shaft to the another guide pin. In accordance with the movement of the shaft, the first frame moves in the lengthwise direction being guided by the guide pins and holes. A second actuator for moving the second frame in the lateral direction is structured similarly.Type: GrantFiled: December 28, 2001Date of Patent: July 27, 2004Assignee: PENTAX CorporationInventors: Ken Hirunuma, Koji Tsuda
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Patent number: 6757488Abstract: An optical apparatus is disclosed, which comprises a detecting unit which detects a vibration to output a vibration signal, an amplifying circuit which amplifies the vibration signal and has a changeable amplification factor, a driving member which drives a lens unit, and a changing circuit which changes the amplification factor depending on whether or not the lens unit is driven by the driving member, thereby making it possible to output a relatively stable vibration signal even when a disturbance vibration occurs.Type: GrantFiled: September 16, 2002Date of Patent: June 29, 2004Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Patent number: 6757011Abstract: An EFP lens device is attached to a mount frame of a lens supporter, and an adapter-type vibration isolator is fixed to the back face of the mount frame. An ENG camera is attached to the back of the vibration isolator. The vibration isolator automatically checks information about the focal length of the attached lens device, information about an extender, etc. and adjusts the amplitude of the correcting lens according to the vibrations of the lens. A lens information setting switch is provided at the vibration isolator so that a user can freely enter and change the lens inherent information through the lens information setting switch. A vibration ON/OFF switch and a sensitivity setting means are provided at a manual control part.Type: GrantFiled: March 29, 1999Date of Patent: June 29, 2004Assignee: Fuji Photo Optical Co., Ltd.Inventors: Toshiaki Takeda, Shinya Yajima
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Patent number: 6754444Abstract: There is disclosed a camera including a correcting optical unit for correcting a camera movement, a calculation circuit for calculating a drive target value of the camera movement correcting optical unit based on a camera movement signal, a computation circuit for computing a light exposure amount to a storage medium, and an exposure amount control unit for, even if the drive target value exceeds a drive threshold amount of the camera movement correcting optical unit during an exposure operation for the storage medium, continuing exposure to the storage medium until it reaches the light.Type: GrantFiled: September 12, 2002Date of Patent: June 22, 2004Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Harada, Toshiharu Ueda
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Patent number: 6738571Abstract: The lens device and the vibration-proof adapter include a lock mechanism with operational ease because a lock mechanism of a vibration-proof lens has a switch on a joint with a camera main body or a joint with the lens device. The lens device is connected by placing a hook, which is provided on a front end face of a camera main body, to a recess of a back end face. A slide pin is provided in the recess so as to slide, and is pressed inside by the hook. In synchronization with the slide pin pressed inside, a lock pin operates to move away from a holding member of a vibration-proof lens, and the vibration-proof lens is unlocked. The slide pin returns to an original protruding position to lock the vibration-proof lens again when the hook is detached from the recess.Type: GrantFiled: March 22, 2002Date of Patent: May 18, 2004Assignee: Fuji Photo Optical Co., LtdInventor: Toshiaki Takeda
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Publication number: 20040081441Abstract: A camera according to the present invention comprises a sensor array wherein multiple pixels are arrayed in the base-length direction, a focusing unit for performing focusing of the camera based on the image output from the sensor array, a first detection unit for detecting the movement of the image signals in the base-length direction, a second detection unit for detecting the change in a predetermined pixel signal of the image signals over time, and a movement detection unit for performing movement detection based on the output from the first and second detection units.Type: ApplicationFiled: May 12, 2003Publication date: April 29, 2004Inventors: Tatsuya Sato, Koichi Nakata, Osamu Nonaka
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Patent number: 6714356Abstract: In binoculars provided with a tremble preventing function, correction lenses are held by a lateral-direction driving frame which is supported in an opening portion of a lengthwise-direction driving frame. The state of the power switch of the binoculars is detected. If the power switch is ON, the output voltage level of a power battery is compared with a threshold. If the output voltage level is below the threshold, the driving frames are driven to a reset position and further to a moving center position, and then the power is turned OFF. If the output voltage level is higher than the threshold, a tremble preventing operation is carried out. The check of the output voltage level and the tremble preventing operation are repeatedly performed every one millisecond.Type: GrantFiled: February 28, 2002Date of Patent: March 30, 2004Assignee: PENTAX CorporationInventor: Shinji Tsukamoto
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Publication number: 20040057710Abstract: A blur correcting device comprises: a blur correction optical system that corrects an image blur by moving along a direction substantially perpendicular to an optical axis; a locking member that locks the blur correction optical system when an image blur correction is not executed; and a lock drive device having an elongated external shape with a length thereof set along a direction in which a tangential line of a circle having a center thereof at the optical axis extends on a plane substantially perpendicular to the optical axis, which generates a drive force to drive the locking member.Type: ApplicationFiled: February 19, 2003Publication date: March 25, 2004Applicant: Nikon CorporationInventor: Kentaro Terao
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Patent number: 6694096Abstract: A device for use in a camera system including a camera, an optical characteristics modifying converter, and an optical assembly having an image stabilizing unit for stabilizing an image in response to the output of a vibration sensor for detecting a shake in an apparatus includes activating means for activating the stabilization operation by the image stabilizing unit in response to a predetermined operation in a predetermined operation portion of the camera, a determining means for determining whether an optical characteristics modifying converter without image stabilization function is incorporated in the camera system, and decision means for deciding whether to perform an activating operation by the activating means based on a determination by the determining means. The operation of a image stabilizing unit is determined by the incorporation of the converter.Type: GrantFiled: January 27, 1998Date of Patent: February 17, 2004Assignee: Canon Kabushiki KaishaInventor: Shinji Imada
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Publication number: 20040018011Abstract: A vibration correcting optical device includes: a vibration detection unit that detects a vibration of the vibration correcting optical device and outputs a vibration detection signal corresponding to the vibration; a vibration state judgment unit that judges a state of the vibration of the vibration correcting optical device to be one of at least three states, based upon the vibration detection signal; an image vibration correcting optical system that corrects an image vibration caused by the vibration of the vibration correcting optical device; a drive unit that drives the image vibration correcting optical system based upon a drive signal; a drive signal arithmetic operation unit that calculates the drive signal based upon the vibration detection signal and outputs the drive signal to the drive unit; and a drive signal calculation control unit that controls a method for calculating the drive signal adopted at the drive signal arithmetic operation unit in conformance to the state of the vibration ascertaineType: ApplicationFiled: January 22, 2003Publication date: January 29, 2004Applicant: Nikon CorporationInventor: Hiroyuki Tomita
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Patent number: 6625396Abstract: In this invention, a blur of a camera is sensed by a blur sensing section. An image blur computing section calculates the amount of image blur on the photographing screen on the basis of the output of the blur sensing section. Then, an image blur level judging section compares the output of the image blur computing section with a specific value, thereby judging the blur level. According to the result of the judgment at the image blur level judging section, a blur level notifying section notifies the blur level. Furthermore, a judgment level changing section changes the specific value compared with the output of the image blur computing section.Type: GrantFiled: October 30, 2001Date of Patent: September 23, 2003Assignee: Olympus Optical Co., LtdInventor: Tatsuya Sato
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Patent number: 6587270Abstract: A shake correcting apparatus including a bottom board, a supporting frame for supporting a correction system, and an electromagnetic driving system formed of a coil unit and a permanent magnet, where shake correction is performed by driving the correction system using the electromagnetic driving system. A space for accommodating a thickness variation in the coil unit is provided at a surface of the coil unit not opposing the permanent magnet. In this manner, a predetermined gap between the coil unit and the permanent magnet may be achieved.Type: GrantFiled: January 26, 2001Date of Patent: July 1, 2003Assignee: Canon Kabushiki KaishaInventor: Shuichi Terada
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Patent number: 6574436Abstract: An image blur compensation device including a mechanism that can effectively reduce the effects of noise which becomes a problem in image blur compensation devices which are used in still cameras, video cameras, and the like. Particularly, the noise becomes a problem during position detection using a position sensitive device. The image blur compensation device includes an image blur compensation optical system to compensate for image blur arising due to blurring motion of an optical device, a position detection unit to detect the position of the image blur compensation optical system, an image blur compensation drive unit to drive the image blur compensation optical system based on the detection result of the position detection unit, and a power supply circuit which performs power supply to the position detection unit and the image blur compensation drive unit by a switching step-up control.Type: GrantFiled: September 12, 1996Date of Patent: June 3, 2003Assignee: Nikon CorporationInventors: Tadashi Otani, Jun Matsushima
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Patent number: 6567615Abstract: When an exposure of a film is started, the A/D conversion of angular speed signals output from the X-axis direction and Y-axis direction sensors and the storing of these digitalized angular speed signals to a memory are repeated at predetermined intervals. After the exposure time has elapsed, the A/D conversion and the storing are stopped, and the film is wound by one frame. Angular data are calculated by integrating the digitalized angular speed signals, and a tremble amount is calculated based on the angular data and a focal length of a photographing optical system. The tremble amount is compared with a permissible amount. If the tremble amount exceeds the permissible amount, the exposure is repeated. The photographing is repeated until the tremble amount becomes less than or equal to the permissible amount.Type: GrantFiled: March 7, 2002Date of Patent: May 20, 2003Assignee: Pentax CorporationInventor: Shigeo Enomoto
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Patent number: 6556784Abstract: An image recording/reproducing system which includes an image recording apparatus for recording an image on a recording medium and an image reproducing apparatus for reproducing the image by using the image recording medium having the image recorded by the image recording apparatus. The image recording apparatus is provided with a photo-taking mode selecting part for selecting a photo-taking mode, a photo-taking condition setting part for setting a predetermined photo-taking condition in accordance with the photo-taking mode set by the photo-taking mode selecting part, and a photo-taking mode recording part for recording, on the recording medium, information of the selected photo-taking mode. The image reproducing apparatus is provided with an image processing part for performing processing to vary the image on the basis of the photo-taking mode information recorded on the recording medium.Type: GrantFiled: December 20, 1999Date of Patent: April 29, 2003Assignee: Canon Kabushiki KaishaInventor: Ichiro Onuki
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Patent number: 6532340Abstract: A camera is provided which commences exposure at a timing at which a shake amount is reduced. An exposure operation commencement instruction section gives an instruction to commence an exposure operation. A focusing lens drive device drives a focusing lens responsive to the instruction. An exposure operation commencement decision section determines a required delay time based on the shake state of the camera body after the instruction to commence the exposure operation has been given. An exposure device commences the exposure operation according to the determined delay time. And an operating state of one of the focusing lens drive device, the exposure operation commencement decision section and the exposure device which is being operated is displayed in a discernible form. The focusing lens drive device, the exposure operation commencement decision section and the exposure section are successively operated in response to the instruction.Type: GrantFiled: April 14, 2000Date of Patent: March 11, 2003Assignee: Olympus Optical Co., Ltd.Inventor: Tatsuya Sato
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Publication number: 20030012565Abstract: An image blur compensation device including a mechanism that can effectively reduce the effects of noise which becomes a problem in image blur compensation devices which are used in still cameras, video cameras, and the like. Particularly, the noise becomes a problem during position detection using a position sensitive device. The image blur compensation device includes an image blur compensation optical system to compensate for image blur arising due to blurring motion of an optical device, a position detection unit to detect the position of the image blur compensation optical system, an image blur compensation drive unit to drive the image blur compensation optical system based on the detection result of the position detection unit, and a power supply circuit which performs power supply to the position detection unit and the image blur compensation drive unit by a switching step-up control.Type: ApplicationFiled: September 12, 1996Publication date: January 16, 2003Inventors: TADASHI OTANI, JUN MATSUSHIMA
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Patent number: 6505000Abstract: A camera in which an electronic flash emits light includes a capacitor for accumulating charge used to cause the electronic flash to emit light, a camera shake detector for detecting camera shake, a power supply control circuit for controlling a power supply used for driving the camera shake detector, and a voltage detecting circuit for detecting a charging voltage level across the capacitor. When the voltage detecting circuit detects that the charging voltage level across the capacitor is greater than a predetermined voltage level which is set lower than a voltage at a time of completion of a charging operation of the capacitor, the power supply control circuit turns on the power supply used for driving the camera shake detector.Type: GrantFiled: July 6, 2001Date of Patent: January 7, 2003Assignee: Canon Kabushiki KaishaInventor: Kazunari Kitani
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Publication number: 20020186970Abstract: A camera which includes a movable member, and a control device for controlling the movable member. The movable member is typically a lens group. The movable member begins moving at an activation time prior to an exposure operation, and is then movable to compensate for motion affecting the camera. The control device controls the movement of the movable member by detecting motion affecting the camera and setting the activation time. The activation time is set so that, at the start of the exposure operation, the speed of movement of the movable member approximates the speed of movement of the detected motion. The camera can also include interrupt signal unit which produces an interrupt signal indicating when motion affecting the camera originates in the camera.Type: ApplicationFiled: July 23, 2002Publication date: December 12, 2002Applicant: NIKON CORPORATIONInventor: Shinichi Hirano
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Patent number: 6487369Abstract: An exposure start determining section executes exposure start determination to reduce shaking during exposure, on the basis of the output of the shake detecting/computing section. At this time, an exposure start method used in the exposure start determining section is changed in accordance with a change condition set in a condition setting section. For example, in accordance with an exposure start instructing operation (a releasing operation), preparatory operations (such as a mirror-raising operation, a lens stop down operation, etc.) for exposure are executed. When the preparatory operations have finished, the shake detecting/computing section and the exposure start determining section start to operate. An exposure-start-determining-method changing section changes an exposure start determination method used in the exposure start determining means before and after a predetermined period elapses from the start of the shake detecting/computing section and the exposure start determining section.Type: GrantFiled: April 25, 2000Date of Patent: November 26, 2002Assignee: Olympus Optical Co., Ltd.Inventor: Tatsuya Sato
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Patent number: 6466253Abstract: A method is disclosed for producing a still image of an object using an image pickup element, which captures an image as a plurality of pixels. The method includes calculating relative displacement amounts between positions of the object on a plurality of frame images taken by the image pickup element, producing a synthesized still image of the object as an image containing an amount of information N times as large as that of each of the frame images using the relative displacement amounts to shift and overlay the plurality of frame images, and carrying out an interpolation processing so that intervals between adjacent pixels distributed on said synthesized still image are substantially the same, by a Fourier series expansion of a distribution state of pixels on said synthesized still image.Type: GrantFiled: June 5, 1998Date of Patent: October 15, 2002Assignee: Kabushiki Kaisha ToshibaInventor: Atsushi Honjoh
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Publication number: 20020127011Abstract: When an exposure of a film is started, the A/D conversion of angular speed signals output from the X-axis direction and Y-axis direction sensors and the storing of these digitalized angular speed signals to a memory are repeated at predetermined intervals. After the exposure time has elapsed, the A/D conversion and the storing are stopped, and the film is wound by one frame. Angular data are calculated by integrating the digitalized angular speed signals, and a tremble amount is calculated based on the angular data and a focal length of a photographing optical system. The tremble amount is compared with a permissible amount. If the tremble amount exceeds the permissible amount, the exposure is repeated. The photographing is repeated until the tremble amount becomes less than or equal to the permissible amount.Type: ApplicationFiled: March 7, 2002Publication date: September 12, 2002Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHAInventor: Shigeo Enomoto
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Patent number: 6449432Abstract: A capacitor is connected to an angular speed sensor through a first switch. A first resistance is connected to the sensor through a second switch and a second resistance is connected to the sensor through a third switch. The first switch; the first resistance and the second switch; and the second resistance and the third switch are connected in parallel. The capacitor is also connected to a non-inversion-input-terminal of a buffer amplifier. An output-terminal of the buffer amplifier is connected to a non-inversion-input-terminal of a difference amplifier. The sensor is connected to an inversion-input-terminal of the difference amplifier. An output-terminal of the difference amplifier is connected to an A/D conversion port of a CPU of a camera. Immediately after an electric power is supplied to the camera, the first switch is closed, and the second and third switches are opened.Type: GrantFiled: June 30, 2000Date of Patent: September 10, 2002Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventor: Yukio Uenaka
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Patent number: 6445882Abstract: A camera which includes a movable member, and a control device for controlling the movable member. The movable member is typically a lens group. The movable member begins moving at an activation time prior to an exposure operation, and is then movable to compensate for motion affecting the camera. The control device controls the movement of the movable member by detecting motion affecting the camera and setting the activation time. The activation time is set so that, at the start of the exposure operation, the speed of movement of the movable member approximates the speed of movement of the detected motion. The camera can also include interrupt signal unit which produces an interrupt signal indicating when motion affecting the camera originates in the camera.Type: GrantFiled: December 20, 1999Date of Patent: September 3, 2002Assignee: Nikon CorporationInventor: Shinichi Hirano
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Patent number: 6414793Abstract: In an image stabilizing apparatus in which an actuator for pivoting a gimbal suspension is driven under PWM control by way of a driving circuit, the pulse width of waveform outputted from a CPU to the driving circuit is enhanced when the power voltage Vp in the driving circuit drops. The CPU reads out the power voltage Vp and enhances the pulse width of output waveform from W1 to W2 as the power voltage Vp decreases from its rated voltage V1 to a lower voltage V2. The correction rate (W2/W1) is set to the reciprocal (V1/V2) of the drop rate of power voltage Vp, so as to yield an appropriate actuator driving power in response to the drop in power voltage Vp.Type: GrantFiled: September 15, 2000Date of Patent: July 2, 2002Assignee: Fuji Photo Optical Co., Ltd.Inventors: Toshihisa Ishijima, Kouichi Nagata, Kenichi Takahashi
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Patent number: 6394156Abstract: A method for cutting trees (18) in the vicinity of a power line (10) using a topping saw (17) suspended from a helicopter (15) in such a way that the helicopter is flown in the direction of the power line (10) so close to the electricity wires (12) that the topping saw suspended from the helicopter cuts the desired tops of the trees. The cutting line (14) of the topping saw (17) is determined in such a way that the helicopter is flown with the help of a video camera (21) attached to the suspension bar (16) for the topping saw at an angle of 45° and a monitor (22) placed in connection with the helicopter's cockpit so that the video camera is kept directed towards the electricity wire (12) of the power line (10). The distance (a, b) of the point where trees are to be cut from the electricity wire (12) is determined by adjusting the distance (h) of the video camera from the cutting blade (20) of the topping saw (17).Type: GrantFiled: October 18, 2000Date of Patent: May 28, 2002Assignee: Länsitec OyInventors: Jorma Ahvenlampi, Hannu Oksanen
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Patent number: 6393215Abstract: A control apparatus for image blur correction is applied to an image blur correction device.Type: GrantFiled: December 21, 1999Date of Patent: May 21, 2002Assignee: Canon Kabushiki KaishaInventor: Koichi Washisu
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Patent number: 6385398Abstract: A panning shot check unit checks whether a panning shot is succeeded or not on the basis of an output from a focal point detection unit for detecting an in-focus state of a photographing lens to output a focal point detection signal and an output from a blurring detection unit for detecting an amount of blurring acting on the camera. A shutter speed change unit changes a shutter speed to obtain the effect of a panning shot when it is determined by the panning shot check unit that the panning shot is succeeded. A control unit turns on a panning shot success display unit in a finder when it is determined by the panning shot check unit that the panning shot is succeeded so as to inform a photographer that the panning shot is succeeded.Type: GrantFiled: July 25, 2000Date of Patent: May 7, 2002Assignee: Olympus Optical Co., Ltd.Inventor: Hisayuki Matsumoto
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Patent number: 6384976Abstract: In an image stabilizing apparatus in which an actuator for a pivoting gimbal suspension is controlled by a feedback loop, the gain of feedback loop based on the angular position is enhanced when the angular velocity is at a first set value or higher until the angular velocity becomes a second set value or lower, whereby a panning mode is automatically attained when a pan/tilt operation is carried out. Also the gain of feedback loop based on the angular position is enhanced when the angular velocity is enhanced until a lapse of a predetermined time after starting the pivoting control of the gimbal suspension, whereby the behavior of gimbal suspension is stabilized.Type: GrantFiled: September 26, 2000Date of Patent: May 7, 2002Assignee: Fuji Photo Optical Co., Ltd.Inventors: Toshihisa Ishijima, Kouichi Nagata, Kenichi Takahashi
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Publication number: 20020051634Abstract: In this invention, a blur of a camera is sensed by a blur sensing section. An image blur computing section calculates the amount of image blur on the photographing screen on the basis of the output of the blur sensing section. Then, an image blur level judging section compares the output of the image blur computing section with a specific value, thereby judging the blur level. According to the result of the judgment at the image blur level judging section, a blur level notifying section notifies the blur level. Furthermore, a judgment level changing section changes the specific value compared with the output of the image blur computing section.Type: ApplicationFiled: October 30, 2001Publication date: May 2, 2002Inventor: Tatsuya Sato
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Patent number: RE38361Abstract: A camera capable of blurring correction includes an acceleration sensor detecting camera-shake amount, and a blurring correcting device correcting blurring of image on the basis of the sensor output. When a lens of the camera is driven for automatic focusing, the blurring is not corrected using an output of the acceleration sensor. Accordingly, blurring is not wrongly corrected.Type: GrantFiled: February 14, 1997Date of Patent: December 23, 2003Assignee: Minolta Co., Ltd.Inventors: Masataka Hamada, Hiroshi Ootsuka, Hisayuki Masumoto, Tougo Teramoto