Patents by Inventor Yasuhiko Shiomi

Yasuhiko Shiomi 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: 6650361
    Abstract: In a digital still camera, it is cumbersome for the camera user to set an image photographing method and saving method of the photographed image, which are suitable for each object. When a photographing mode suitable for a moving object such as a “sports mode” is set, normal photographing is done, and the photographed image is lossless-compressed and saved. When a photographing mode suitable for a still object such as a “portrait mode” is set, a high-resolution image is captured by pixel shift photographing. The photographed image is lossy-compressed and saved.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: November 18, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 6344876
    Abstract: An image blur prevention apparatus adapted to a camera having an exposure portion, includes a first image blur detecting device that detects an image blur state of the camera, a second image blur detecting device that detects an image blur state of an optical image of the camera, and outputs a detection signal, and a determining portion that determines a photographing operation state of the camera. A calculating device, having a first calculation program and a second calculation program, selects one calculation program from among the first and second calculating programs based on a determination result of the determining portion and based on the detection signal of the second image blur detection device, and calculates a predicted blur signal in accordance with the selected calculation program.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: February 5, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Publication number: 20010048475
    Abstract: This specification discloses an image blur preventing apparatus applicable to a camera which has an image blur detecting device for detecting an image blur state, a predicting portion for predicting the image blur state after a predetermined point of time on the basis of the detection output of the image blur detecting device at the point of time, and forming a predicted image blur signal corresponding to the image blur state, an image blur preventing device for performing an image blur preventing operation in accordance with the predicted image blur signal obtained by the predicting portion, and a changing portion for changing the manner of the prediction by the predicting portion in accordance with the photographing operation state of the camera, whereby optimum prediction is effected in accordance with the state of the camera.
    Type: Application
    Filed: November 18, 1997
    Publication date: December 6, 2001
    Inventor: YASUHIKO SHIOMI
  • Patent number: 6320613
    Abstract: An image blur prevention apparatus includes a device that varies the sampling period of a signal used in image blur prevention. In an exposure operation, the sampling period is shortened to achieve image blur prevention with high precision (in the exposure operation, image blur prevention with high precision is required). In a non-exposure operation, the sampling period is set to be relativelylong to reduce the load on a calculation circuit (in the non-exposure operation; before exposure, a calculation for determining the exposure conditions is performed, and the load on the calculation circuit becomes great).
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: November 20, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 6282376
    Abstract: An image stabilizing device includes a vibration detector for detecting a vibrated state of an image, a vibration compensator responsive to the vibration detector to compensate for the vibrated state of the image, connection circuitry for substantially connecting the vibration detector to the vibration compensator and alleviating circuitry for preventing the vibration compensator from effecting sudden starting of an operation responding to the vibration detector during the connection by the connecting circuitry.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: August 28, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 6191813
    Abstract: An image stabilizing device removably mountable on a camera or other optical apparatus includes an image stabilizer for accomplishing image stabilization of the camera, a detector for detecting the operative state of the camera, and a controller responsive to the detector to control the operation of said image stabilizer. The detector detects the presence or absence of an information signal and the controller acts diversely dependent on the detections.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: February 20, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuo Fujisaki, Isao Nakazawa, Yasuhiko Shiomi
  • Patent number: 6163651
    Abstract: A control apparatus for image blur prevention, includes a discrimination unit which discriminates an adverse influence on at least one of an image blur detection portion for detecting an image blur, and an image blur prevention portion for preventing an image blur, and performs discrimination irrespective of the state of the image blur detection portion and the state of the image blur prevention portion, and a prevention unit for preventing the adverse influence on at least one of the image blur detection portion and the image blur prevention portion in accordance with the discrimination result of the discrimination unit.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: December 19, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Washisu, Yasuhiko Shiomi
  • Patent number: 6122448
    Abstract: An image blur prevention apparatus includes a movable member (e.g., a correction optical system) which moves for image blur prevention, a holding device (e.g., a locking member for holding the correction optical system) which holds the movable member, the holding device being changeable between a state in which a predetermined holding operation is performed and a state in which the predetermined holding operation is not performed, an operating device which operates the movable member for image blur prevention (e.g., operates the correction optical system in accordance with an image blur signal) at a predetermined position as a control center position (e.g.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: September 19, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 6088533
    Abstract: A transmission apparatus used in an image blur prevention system includes a communication portion for transmitting a first signal for preventing an image blur in a first direction (yaw) between first and second devices having independent arrangements, a communication portion also transmits a second signal for preventing an image blur in a second direction (pitch).
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: July 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 6070015
    Abstract: A control apparatus for an image blur prevention device having a feedback loop for performing control of image blur prevention comprises a rewritable memory for storing outset information of a characteristic of the feedback loop for performing control of image blur prevention and determination circuitry for determining a further characteristic of the feedback loop in accordance with the information stored in the memory.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: May 30, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 6067419
    Abstract: There is disclosed an image blur prevention apparatus which has a first means for sampling a first signal associated with image blur prevention, and a second means for performing an operation for forming a second signal used in image blur prevention of the image blur prevention apparatus on the basis of the signal sampled by the first means, at a frequency different from the sampling frequency of the first means. For example, the first means is set to sample the first signal (fluctuation detection signal) at a first period, and the second means is set to perform the operation for forming the second signal (a driving signal for operating an image blur prevention means) on the basis of a plurality of data sampled by the first means at different timings at a second period longer than the first period so as to cope with a high-frequency first signal, thereby improving the processing performance of a system for digitally processing a signal for image blur prevention, against a high-frequency first signal.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: May 23, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 6035133
    Abstract: Proper image blur prevention is performed when a fluctuation of an optical apparatus (camera) is caused by the operation of a movable member (operation of the shutter of the camera). For this purpose, an image blur prevention apparatus is operated by using both an output signal from a detection device (e.g., a detection system including a vibration gyroscope and the like) and a predetermined signal (e.g., a signal having a predetermined waveform and stored in a memory) so that the image blur caused by a fluctuation due to an operation of the movable member can be properly prevented.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: March 7, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5933660
    Abstract: In an image blur prevention device, an apparatus adapted thereto, an optical apparatus to which the device is applied, and the like, an operation device is used to change the image blur prevention device into a predetermined state in a first manner in accordance with a first operation (for example, to stop the image blur prevention device after the lapse of the predetermined time period in accordance with an operation of the release operation unit of a camera), and to change the image blur prevention device into the predetermined state in a second manner different from the first manner in accordance with a second operation different from the first operation (for example, to stop the image blur prevention device before the lapse of the predetermined time period in accordance with an OFF operation of the main switch of the camera), thereby improving the operability of the image blur prevention device.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: August 3, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5873004
    Abstract: An image stabilizing apparatus is provided with a plurality of gain setting means arranged in a feedback loop system, a gain switching means for, when an oscillation of the feedback loop system is detected based on an output from a deviation amount detection means, switching gains in the gain setting means, a plurality of phase compensation means arranged in the feedback loop system, and a phase compensation switching means for, when an oscillation of the feedback loop system is detected based on an output from the deviation amount detection means, switching the phase compensation means. The oscillation is suppressed by switching the gains in the gain setting means, switching the phase compensation means, or simultaneously switching them.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: February 16, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5781805
    Abstract: An image blur prevention apparatus includes a movable member (e.g., a correction optical system) which moves for image blur prevention, a holding device (e.g., a locking member for holding the correction optical system) which holds the movable member, the holding device being changeable between a state in which a predetermined holding operation is performed and a state in which the predetermined holding operation is not performed, an operating device which operates the movable member for image blur prevention (e.g., operates the correction optical system in accordance with an image blur signal) at a predetermined position as a control center position (e.g.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: July 14, 1998
    Inventor: Yasuhiko Shiomi
  • Patent number: 5748993
    Abstract: In an image stabilizing device or system of the kind having a shake detecting sensor which detects a shake of the device or system and is arranged to require a lapse of time before the sensor becomes capable of stably detecting the shake after the start of the sensor, and an image shake correcting member which performs an image shake correcting action according to the output of the shake detecting sensor, a control circuit is arranged to allow the image shake correcting member to commence its image shake correcting action according to the output of the shake detecting sensor after the lapse of a given period of time from the start of the operation of the shake detecting sensor, and a varying circuit is arranged to vary the given period of time.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: May 5, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5637860
    Abstract: In an image stabilizing apparatus having blur detecting means for detecting the blur of the image of a camera and blur correcting means for correcting the blur of the image of the camera on the basis of the output of the blur detecting means, control is effected so that the supply of electric power to the blur detecting means may be started in response to the camera being released from a state which renders it unable to photograph, and thereafter the supply of electric power to the blur correcting means may be started in response to an operating portion for effecting the photographing by the camera being operated, whereby the wasteful supply of electric power is prevented from being effected to the blur correcting means during the initial stabilizing period required until the blur detecting means performs its proper operation after the start of the supply of electric power thereto, thereby preventing the waste of electric power and further preventing the photographer from being given a malaise.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: June 10, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5619030
    Abstract: A control apparatus for image blur prevention includes a ontroller, which uses an output from at least one of first and second image blur detection portions (e.g., a mechanical sensor and an electrical sensor) having different image blur detection frequency characteristics, in accordance with the frequency of an image blur, whereby the two detection portions compensate for each other, and image blur prevention can be more precisely performed for image blurs in a wider frequency range.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: April 8, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5615397
    Abstract: An undesired signal contained in a signal related to blur suppression, e.g., an error output signal contained in a blur detection signal and obtained upon generation of a shock, is stored. When the state represented by the signal is determined without using the signal, and an undesired state is determined, e.g., when a state in which an error output signal is contained in a blur detection signal is predetermined from the state of a structure for generating a shock or impact, the signal related to blur suppression is accordingly synthesized with the stored undesired signal, e.g., the error output signal is subtracted from the blur detection signal, thereby forming a corrected signal for blur suppression, to perform a blur suppression operation in accordance with the corrected signal.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: March 25, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiko Shiomi, Shinji Imada
  • Patent number: 5589912
    Abstract: A camera with an image stabilizing device includes a power supply for the camera, image stabilizing means for preventing image blur of the camera, discrimination means for discriminating a status of the power supply, and control means for varying a manner of discrimination by the discrimination means in accordance with the status of the image stabilizing means.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 31, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi