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: 5402202
    Abstract: An exposure control device for a camera includes a first opening state determination device for digitally determining an aperture opening state, and a second opening state determination device for determining with an analog device the aperture opening state. A control means controls the aperture opening state in accordance with information from at least one of the first opening state determination device and the second opening state determination device.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: March 28, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Washisu, Shinichi Matsuyama, Yasuhiko Shiomi
  • Patent number: 5229603
    Abstract: A vibration detection apparatus having an outer cylinder having a chamber in which a liquid is sealed, a movable member rotatably held about a predetermined rotating shaft, and detecting means for detecting a relative angular displacement of the movable member and the outer cylinder about the rotating shaft as a vibration signal, includes an electromagnetic means for controlling the relative angular displacement between the movable member and the outer cylinder, and a control means for nonlinearly changing the electromagnetic force of the electromagnetic means in accordance with the relative angular displacement between the movable member and the outer cylinder.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: July 20, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5225865
    Abstract: A camera includes an abnormal state detecting circuit for detecting an abnormal state of the camera, a counter for counting the number of times for which the abnormal state of the camera is detected by the abnormal state detecting circuit, and a setting instruction circuit for setting the camera into an operation inhibiting mode in response to a counted value of the counter when the abnormal state of the camera has been detected by the abnormal state detecting circuit a predetermined plural number of times.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: July 6, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiko Shiomi, Kiyoshi Alyfuku, Kazuyuki Maeda
  • Patent number: 5175580
    Abstract: A camera with an image stabilizing device comprises 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: August 9, 1991
    Date of Patent: December 29, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5136159
    Abstract: An angular displacement detecting device provided with a tubular casing having a chamber in which a liquid is sealed, a floating body disposed in the liquid and supported for rotation about a predetermined rotational axis, and a detector for detecting the relative angular displacement between the floating body and the tubular casing about the rotational axis, comprises a closed-magnetic-path forming member for forming a closed magnetic path including the floating body, and an electrical conductor disposed in the closed magnetic path so as to be subject to an electromagnetic force which is generated from the closed magnetic path by energization, the electrical conductor relatively displacing the floating body with respect to the tubular casing through the action of the electromagnetic force.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: August 4, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Nakazawa, Yasuhiko Shiomi
  • Patent number: 5136324
    Abstract: An optical system adjusting device for a camera comprises a first driver for driving the optical system of the camera; a second driver for driving the optical system at a finer pitch than the first driver; and a control system arranged to divide a degree to which the optical system is to be driven into a first degree to which the optical system is to be driven by the first driver and a second degree to which the optical system is to be driven by the second driver and to cause the first driver to drive the optical system to the first degree and the second driver to drive the optical system to the second degree.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: August 4, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsuboi, Isao Nakazawa, Hiroshi Maeno, Yasuhiko Shiomi
  • Patent number: 5136158
    Abstract: An angular displacement detecting device provided with a tubular casing having a chamber in which a liquid is sealed, a floating body disposed in the liquid and supported for rotation about a predetermined rotational axis, and a detector for detecting the relative angular displacement between the floating body and the tubular casing about the rotational axis, comprises a closed-magnetic-path forming member for forming a closed magnetic path including the floating body, an electrical conductor disposed in the closed magnetic path for relatively displacing the floating body with respect to the tubular casing by energization, and a controlling circuit for varying the amount of energization at the time of the energization of the electrical conductor.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: August 4, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Nakazawa, Yasuhiko Shiomi
  • Patent number: 5053804
    Abstract: A camera of the kind operating under the control of a computer is arranged to shift an operating state of the computer from a normal mode to a hold mode for saving electric energy by detecting a drop in the voltage level of power supply during a load driving process or when an operation member is operated; and to prevent a faulty operation by varying, according to the kind of a load to be driven, a voltage-level-drop detecting level which is set for shifting the computer to the hold mode.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: October 1, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukio Odaka, Yasuhiko Shiomi, Masanori Ohtsuka
  • Patent number: 5047793
    Abstract: There is disclosed camera system comprising: unit for automatically and repeatedly measuring the distance to an object; unit for discriminating the measured results on the basis of the measured results, to provide a predetermined activation signal; and exposure control unit for performing exposure operation in response to the activation signal.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: September 10, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 5023647
    Abstract: An automatic status discriminator has a distance measuring unit for calculating the distance to a target object to provide a signal corresponding to the distance. A reflection coefficient calculation unit calculates the reflection coefficient of the target object on the basis of the signal provided from the distance measuring unit. A light intensity measuring unit provides signals respectively corresponding to the brightness of the target object and the brightness of a region near the target object. An adjusting unit adjusts the signal corresponding to the brightness of the target object on the basis of the reflection coefficient obtained from the reflection coefficient calculation unit to provide the adjusted signal. A status discriminating means compares the signal corresponding to the brightness of the region near the target object with the output from the adjusting unit to thereby discriminate the status of the target object.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: June 11, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiko Shiomi, Takayuki Tsuboi
  • Patent number: 4982218
    Abstract: A camera comprises a photo taking optical system; driving means for driving the photo taking optical system; a shutter; switching means for causing transmission of the driving force of the driving means to the photo taking optical system to be changed over to the shutter; and control means for controlling the shutter by converting the opening time of the shutter into the driving degree of the driving means.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: January 1, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsuboi, Isao Nakazawa, Hiroshi Maeno, Yasuhiko Shiomi
  • Patent number: 4870439
    Abstract: A focal length varying device for a camera comprises a photo taking optical system having a variable focal length; a discriminating device for discriminating whether or not adequate photographing is possible; and a system for automatically changing the focal length of the photo taking optical system on the basis of the result of discrimination made by the discriminating device.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: September 26, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsuboi, Isao Nakazawa, Hiroshi Maeno, Yasuhiko Shiomi
  • Patent number: 4731629
    Abstract: In the camera having a zoom lens with an automatic operating mechanism therefor, a device for controlling co-ordination of the mechanism with a shutter, comprises an exposure-with-zooming actuator arranged upon first stroke to actuate the mechanism so that the zoom lens is set in one of the terminal ends of movement thereof, and upon second stroke to initiate a zooming operation of the zoom lens by the mechanism, and control means responsive to start of the zooming for initiating an exposure operation of the shutter to a photographic film.
    Type: Grant
    Filed: April 2, 1986
    Date of Patent: March 15, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chikara Aoshima, Yasuhiko Shiomi
  • Patent number: 4693597
    Abstract: The disclosed position measuring device includes a position sensitive detector and a processing circuit therefor. The position sensitive detector includes two terminals carrying signals that vary oppositely according to the incident light. A switch connected to one terminal opens and closes the one terminal, and a signal processor processes one output of the position sensitive detector when the switch is opened and another output of the position sensitive detector when the switch is closed so as to produce normalized light/point position information. A control controls the signal processing circuit and the switch.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: September 15, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiko Shiomi, Ryoichi Suzuki
  • Patent number: 4675517
    Abstract: A photosensitive element having first and second sensitive regions arranged to receive a light spot in such a way that as the light spot lies astride the boundary therebetween, the ratio of the areas of the two parts of the spot light which are received by the first and second sensitive regions, respectively, varies depending on the received position of the light spot, whereby the received position of the light spot is detected from the variation of the ratio of the outputs of the first and second sensitive regions, wherein an error of variation of the ratio of the outputs of the first and second sensitive regions for the received position of the light spot, which takes place when the diameter of the received spot light is so large as to overrun the first and second sensitive regions, is corrected by providing a supplementary sensitive region surrounding the first or second sensitive region.
    Type: Grant
    Filed: March 5, 1985
    Date of Patent: June 23, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi
  • Patent number: 4615616
    Abstract: A measuring distance apparatus for measuring a distance to an object in accordance with an incident position of a reflected light of a signal light projected to the object is disclosed.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: October 7, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuhiko Shiomi