Patents by Inventor Hideo Kawahara

Hideo Kawahara 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: 6982746
    Abstract: There is disclosed a shake prevention apparatus for compensating for a disturbance in an image resulting from a camera shake. A shake of a camera main body is measured by a gyro sensor. Upon sampling the output signal from the sensor by an A/D converter, a sampling timing corresponding to a shutter speed is set. Especially, a timing is generated so that the sampling timing corresponds to the central position of the charge storage period of a CCD.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: January 3, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideo Kawahara
  • Patent number: 6963361
    Abstract: A correction variable is calculated based on vibration data of an image sensing apparatus. Based on the calculation result, timing of reading image signals from an image sensing device is controlled. The read image signals are delayed by predetermined time, the read image signals and the delayed image signals are added at a predetermined addition ratio based on the calculation result of the correction variable calculator. In still image sensing, the above addition operation is not performed.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: November 8, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideo Kawahara, Hitoshi Yasuda
  • Publication number: 20050157181
    Abstract: A correction variable is calculated based on vibration data of an image sensing apparatus. Based on the calculation result, timing of reading image signals from an image sensing device is controlled. The read image signals are delayed by predetermined time, the read image signals and the delayed image signals are added at a predetermined addition ratio based on the calculation result of the correction variable calculator. In still image sensing, the above addition operation is not performed.
    Type: Application
    Filed: March 17, 2005
    Publication date: July 21, 2005
    Inventors: Hideo Kawahara, Hitoshi Yasuda
  • Publication number: 20050061952
    Abstract: 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: Application
    Filed: August 26, 2004
    Publication date: March 24, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hideo Kawahara
  • Publication number: 20040125213
    Abstract: A vibration compensation apparatus comprises: an angular velocity detector that detects a plurality of angular velocities in two orthogonal detection axes directions and outputs corresponding angular velocity signals; a compensation unit that compensates vibration in a plurality of compensation axis directions; and a conversion unit that converts the plurality of angular velocity signals obtained by the angular velocity detector or a plurality of vibration compensation signals based on the plurality of angular velocity signals into vibration compensation signals expressed in the coordinates of the compensation axes of the compensation unit. The compensation unit compensates the vibration based on the vibration correction signals converted by the conversion unit.
    Type: Application
    Filed: December 10, 2003
    Publication date: July 1, 2004
    Inventor: Hideo Kawahara
  • Patent number: 6734901
    Abstract: A vibration correction apparatus has a motion vector detection circuit for detecting a motion vector signal at a predetermined sampling period, a signal processing circuit for calculating a correction target value in accordance with the motion vector signal detected by the motion vector detection circuit, a correction system for correcting a motion in accordance with the correction target value, and a control circuit for generating a new correction target value through interpolation of the correction target value, shortening a correction period of correction by the correction system shorter than a sampling period of the motion vector, and making the period of correction by the correction system variable with each image pickup system.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: May 11, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshimichi Kudo, Hideo Kawahara, Junichi Murakami
  • Patent number: 6734902
    Abstract: A vibration correcting device comprises first vibration correcting amount output unit for obtaining and outputting a vibration correcting amount from the amount of vibration of the apparatus, second vibration correcting amount output unit for obtaining and outputting a vibration correcting amount from the amount of vibration in a picked-up image obtained by picking up an object image with image pickup unit through an optical system, correction unit for correcting the vibration in the picked-up image based on the output of the first and second vibration correcting amount output unit, and control unit for controlling the outputs of the first and second vibration correcting amount output unit based on the outputs thereof.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: May 11, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideo Kawahara
  • Patent number: 6388705
    Abstract: An image sensing apparatus which hinders execution of vibration cancellation control when an image is sensed with a high-magnification lens, by suppressing vibration cancellation control. Movement of the image sensing apparatus generated purposefully by a user is reflected upon the sensed image without unexpected moving compensation by the vibration cancellation control.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: May 14, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideo Kawahara, Toshimichi Kudo
  • Publication number: 20020054213
    Abstract: An image sensing apparatus which hinders execution of vibration cancellation control when an image is sensed with a high-magnification lens, by suppressing vibration cancellation control. Movement of the image sensing apparatus generated purposefully by a user is reflected upon the sensed image without unexpected moving compensation by the vibration cancellation control.
    Type: Application
    Filed: August 1, 1996
    Publication date: May 9, 2002
    Inventors: HIDEO KAWAHARA, TOSHIMICHI KUDO
  • Publication number: 20010019364
    Abstract: It is an object of this invention to provide an apparatus which can properly expose a main object regardless of the background conditions. In order to achieve this object, there is provided an apparatus comprising a photometric unit for receiving object light and converting the object light into luminance signals of a plurality of areas, and a control unit for calculating the histogram of the luminance distribution on the basis of the luminance signals of the plurality of areas converted by the photometric unit, and controlling the operation of an illumination device for illuminating the object on the basis of the calculation result.
    Type: Application
    Filed: February 6, 2001
    Publication date: September 6, 2001
    Inventor: Hideo Kawahara
  • Patent number: 5684919
    Abstract: An apparatus for recording a video signal while forming a multiplicity of recording tracks in parallel on a tape-shaped recording medium, wherein camera information representing the operating state of a camera when shooting each picture is recorded in a position corresponding to the recorded track of that picture so that the operating state of the camera at the time of taking the video signal which has already been recorded can reappear. Therefore, in a case where a video signal is recorded in continuity with this recorded portion, the camera operating state is controlled in a joint portion of these to improve the continuity in this joint portion.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: November 4, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiko Kikuzawa, Hidetoshi Wada, Hisataka Hirose, Hideo Kawahara
  • Patent number: 5548371
    Abstract: An exposure control device which permits exposure control either in an automatic mode or in a manual mode is arranged to smoothly perform the exposure control by holding exposure control information obtained immediately before change-over of the exposure control mode from one mode over to the other; and is provided with a correction circuit for uniformalizing an iris driving characteristic for the whole iris driving range by correcting the non-linearity of the characteristic.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: August 20, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideo Kawahara, Hideyuki Arai
  • Patent number: 5540509
    Abstract: A print unit provided with one or a multi-serial heads having a plurality of print pins widely arranged in a direction of the feeding of paper and is provided laterally movably on a guide shaft. A cassette holder having a plurality of monochromatic ribbon cassettes that are juxtaposed and received therein is arranged in parallel with and close to the moving path of the print unit. A suitable one of the monochromatic ribbon cassettes is transferred, in response to a control signal, from the cassette holder to the print unit, and from the print unit to the cassette holder.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: July 30, 1996
    Assignee: Ye Data, Inc.
    Inventors: Nobuyoshi Matsuzawa, Hideo Kawahara
  • Patent number: 5510850
    Abstract: This invention is related to a video signal color correction device. Color information signal inputs are received in rectangular form. A coordinates conversion means converts the inputs into polar coordinates using one of the inputs as a polar axis. The device has a correction data storing means in which are stored luminance signal correction data dependent on a luminance signal and the polar coordinates and color information signal correction data. The correction data storing means outputs the luminance signal correction data and the color information signal correction data in accordance with the luminance signal and the polar coordinates. A correction means corrects the luminance signal and the polar coordinates on the basis of the luminance signal correction data and the color information signal correction data output from the correction data storing means.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: April 23, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Ueda, Teruo Hieda, Hideo Kawahara
  • Patent number: 5459512
    Abstract: A video camera provided with a diaphragm operating speed control circuit for selecting different operating speeds for the diaphragm for exposure control, in automatic exposure control and in manual exposure control.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: October 17, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideo Kawahara
  • Patent number: 5428421
    Abstract: An exposure control device which permits exposure control either in an automatic mode or in a manual mode is arranged to smoothly perform the exposure control by holding exposure control information obtained immediately before change-over of the exposure control mode from one mode over to the other; and is provided with a correction circuit for uniformalizing an iris driving characteristic for the whole iris driving range by correcting the non-linearity of the characteristic.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: June 27, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideo Kawahara, Hideyuki Arai
  • Patent number: 5406349
    Abstract: Disclosed is an interchangeable lens system which comprises an interchangeable lens and a camera. the interchangeable lens includes a driving circuit controlled by data transmitted from the camera to the lens such that it displaces a controlled member of the lens, a detection circuit for detecting a displacement of the driving circuit, and a correction circuit for converting the output characteristics of the detection circuit into predetermined common characteristics. The camera includes a control circuit for driving the driving circuit in the interchangeable lens in response to the output of the detection circuit in the interchangeable lens.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: April 11, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Takahashi, Susumu Kozuki, Hirokazu Mogi, Hideo Kawahara, Hideyuki Arai, Katsushi Suzuki, Toshiaki Mabuchi, Takashi Kobayashi
  • Patent number: 5326720
    Abstract: A method for producing a silicon dioxide film by contacting a substrate such as glass with a treating liquid comprising a hydrosilicofluoric acid solution supersaturated with silicon dioxide to deposit a silicon dioxide film on the surface of the substrate, the method being characterized by providing a device for preventing an Si component from escaping from the treating liquid. According to the method, pollution of working environment and decrease in concentration of solution do not occur during the formation of silicon dioxide film.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: July 5, 1994
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Takuji Goda, Yasuto Sakai, Akihiro Hishinuma, Hideo Kawahara, Shigehito Deki
  • Patent number: 5325149
    Abstract: A camera system with interchangeable lens, consisting of a camera unit and a lens unit detachably mountable on the camera unit, comprising a target value setting circuit for setting a target control value of a diaphragm provided in the lens unit, a correction circuit for generating a correction signal for varying the content of the target value setting circuit, a diaphragm state detection circuit for detecting the diaphragm information, a first control circuit for varying the set value of the target value setting circuit, based on the correction signal, a diaphragm drive circuit for driving the diaphragm according the result of comparison of the output of the diaphragm state detection circuit and the value of the target value setting circuit, a memory circuit for storing the information specific to each lens unit, and a second control circuit for generating, at the detaching and mounting of the lens unit, a command for controlling the value of the target value setting circuit for bringing the diaphragm to a p
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: June 28, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideo Kawahara
  • Patent number: 5296974
    Abstract: A light controlling device comprising a pair of substrates, a viscoelastic or elastic dispersing medium containing fine particles aligned in an approximately constant direction, and a way for applying a shear stress to the viscoelastic or elastic material. The device can control light transmission in non-stage by applying a shear stress to the viscoelastic or elastic material to incline the direction of the alignment of particles with respect to the incident light.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: March 22, 1994
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiroaki Tada, Yasuhiro Saito, Masahiro Hirata, Masato Hyodo, Hideo Kawahara