Patents by Inventor Katsuji Yoshimura

Katsuji Yoshimura 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: 5732186
    Abstract: A video signal reproducing apparatus is arranged to use a first video signal which corresponds to an image sensed state of an object and is obtained by sensing the object's image and a second video signal which is reproduced from a record bearing medium; and to form and produce at least one picture plane portion of a third video signal which includes and has the first and second video signals mixed therein in a time sharing manner.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: March 24, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroto Yasumura, Masahide Hirasawa, Minoru Noji, Susumu Kozuki, Koji Takahashi, Katsuji Yoshimura, Tomohiko Sasatani
  • Patent number: 5677733
    Abstract: An exposure control device having a light measuring area setting circuit which sets a light measuring area on an image sensing plane, a discriminating circuit which discriminates from each other varied states of the image sensing plane through video signal parts corresponding to the inside and the outside of the light measuring area and an exposure compensating circuit which compensates the state of exposure to light is arranged to shift the set position of the light measuring area to trace an object's image at least when the exposure compensating circuit is in operation.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: October 14, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Kitahiro Kaneda, Hideo Homma, Kunihiko Yamada, Hirofumi Suda, Akihiro Fujiwara
  • Patent number: 5638118
    Abstract: An image sensing device comprises an image sensor for photoelectrically converting an image sensing light coming from an object into an image sensing signal and for storing signal charges and providing a readout signal. Control circuitry variably sets storage times of the image sensor and an image composer composes an image signal for one picture from a plurality of readout signals from the image sensor having different charge storage times.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: June 10, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Takahashi, Teruo Hieda, Chikara Satoh, Toshiyuki Masui, Takashi Kobayashi, Katsuji Yoshimura
  • Patent number: 5623309
    Abstract: In the automatic focusing device having an object image variation detecting circuit for quantitatively detecting a variation of an object image on the image pickup plane of an image pickup element so that the focusing operation is controlled in accordance with the amount of variation of the object image detected by the object image variation detecting circuit, there are provided a stop control circuit for controlling the period for stopping the focusing operation when panning depending on whether the amount of variation of the object image is large or small, a characteristic varying circuit for varying the frequency band of the picked-up image signal to be used in the focus detection depending on whether the amount of variation of the object image at the time of the focusing operation is large or small, and a pass characteristic varying circuit for varying the focus detection area on the image pickup plane depending on whether the amount of variation of the object image is large or small.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: April 22, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Masamichi Toyama, Akihiro Fujiwara, Kunihiko Yamada, Hirofumi Suda
  • Patent number: 5619264
    Abstract: In the automatic focusing device having an object image variation detecting circuit for quantitatively detecting a variation of an object image on the image pickup plane of an image pickup element so that the focusing operation is controlled in accordance with the amount of variation of the object image detected by the object image variation detecting circuit, there are provided a stop control circuit for controlling the period for stopping the focusing operation when panning depending on whether the amount of variation of the object image is large or small, a characteristic varying circuit for varying the frequency band of the picked-up image signal to be used in the focus detection depending on whether the amount of variation of the object image at the time of the focusing operation is large or small, and a pass characteristic varying circuit for varying the focus detection area on the image pickup plane depending on whether the amount of variation of the object image is large or small.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: April 8, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Masamichi Toyama, Akihiro Fujiwara, Kunihiko Yamada, Hirofumi Suda
  • Patent number: 5596419
    Abstract: A video system is arranged to record, on a second recording medium of a relatively small capacity, a given period portion of a video signal relating to an image plane representing each of varied programs included in the video signal and information on a recorded position of each of the programs on a first recording medium which has a relatively large capacity.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: January 21, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Koji Takahashi, Yasutomo Suzuki
  • Patent number: 5585934
    Abstract: An image signal recording apparatus arranged to be selectively set in a still-image recording mode and a motion-picture recording mode. A storage memory stores on picture portion of the motion-picture video signal. During the still-image recording mode, the content of the storage memory is repetitively read out of the storage memory thereby forming a video signal representing the still-image. The duration of still-image recording mode is longer than a period required to store two picture portions of the motion-picture in the storage memory.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 17, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Koji Takahashi, Yuji Imamura, Kenichi Nagasawa, Yasutomo Suzuki
  • Patent number: 5543839
    Abstract: A focus adjusting device having an added capability of discriminating effective focal length information by using an image signal produced from an image pickup element is provided with an automatic focus adjusting circuit for moving a lens to the in-focus position on the basis of a high-frequency component in the image signal, and a circuit for discriminating effective focal length information of the lens from the degree of change of a low-frequency component in the image signal, wherein the gain of the automatic focus adjusting circuit is controlled in accordance with the discriminated focal length information.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: August 6, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Suda, Masamichi Toyama, Akihiro Fujiwara, Kunihiko Yamada, Katsuji Yoshimura
  • Patent number: 5510898
    Abstract: Apparatus for processing signals having time base variations comprises: time base variation correction circuitry for correcting time-base variations existing in a signal input thereto and having an input terminal and an output terminal, the output terminal providing signals which are time base variation corrected; a recording and/or reproducing unit having an input terminal for receiving a signal to be recorded on a recording medium and an output terminal for providing a signal reproduced from the recording medium; and switch circuitry operable in a recording mode for connecting the output terminal of the time base variation correction circuitry to the input terminal of the recording and/or reproducing unit and in a reproducing mode for connecting the output terminal of the recording and/or reproducing unit to the input terminal of the time base variation correcting circuitry.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 23, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Mitsuru Owada
  • Patent number: 5442397
    Abstract: An image sensing apparatus operating with adaptive selection of a first tracing algorithm in which an object image is traced by moving a detecting area capable of being movably set on an image sensing plane in such a manner that the luminance level difference between the inside and the outside of that area becomes maximum and a second tracing algorithm in which the object image is traced by moving the position of the detecting area in such a manner that a point at which a contrast becomes maximum comes to coincide with a central portion of the detecting are depending on the state of the image sensing plane. The threshold values for changing over between the first tracing algorithm and the second tracing algorithm are made to have a hysteresis characteristic.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: August 15, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Masamichi Toyama, Akihiro Fujiwara, Hirofumi Suda, Kunihiko Yamada, Kitahiro Kaneda, Hideo Homma
  • Patent number: 5422671
    Abstract: An automatic focusing device comprises a binary coded information producing unit for producing binary coded information by comparing the levels of a predetermined component in each of a plurality of areas set on an image sensing plane of and image sensor with a predetermined value, a first detector for comparing binary coded information in each of the plurality of areas in one field with that in another field among a plurality of fields differing timewise from each other to produce a signal based on the difference between the two binary coded information, a second detector for detecting a total value, for one image plane, of differences in the predetermined component between adjacent areas among the plurality of areas of the image sensing plane, a computing unit for obtaining a degree of relative variations in information on images formed on the image sensing plane in different fields by computing the result of detection made by the first and second detectors and a control unit for controlling a focus adjusti
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: June 6, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihiko Yamada, Akihiro Fujiwara, Masamichi Toyama, Hirofumi Suda, Kitahiro Kaneda, Katsuji Yoshimura
  • Patent number: 5386264
    Abstract: An image shake detecting device for detecting a shake of an image on an image sensing plane on the basis of a video signal output from an image sensor includes detection circuits arranged to detect image displacement in a plurality of areas set on the image sensing plane, and a control microcomputer which makes a discrimination, on the basis of information output from these detection circuits, between a movement of a camera and a solo movement of a photographed object. The device thus accurately makes compensation for an image shake by judging the state of the image on the basis of information output from these detection circuits. The image shake detecting device further includes a computing circuit arranged to compute a quantity of an image shake on the basis of a difference in detecting timing of a feature point of the image and a sensitivity control circuit arranged to change the detection sensitivity of the shake detection circuits.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: January 31, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masayoshi Sekine, Toshiyuki Nakajima, Takashi Kai, Katsuji Yoshimura, Masamichi Toyama
  • Patent number: 5361177
    Abstract: A data recorder has a first recording mode in which a rotary head records, on a tape-shaped recording medium, main data related to main information by forming many parallel tracks in a first area of the medium which extends in the lengthwise direction of the medium; and a second recording mode in which the rotary head records on the medium only sub-code data which is other than the main data by repeatedly recording the sub-code data many times forming many parallel tracks in a second area which extends in the lengthwise direction of the medium and in parallel to the first area.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: November 1, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Susumu Kozuki, Katsuji Yoshimura, Toshiyuki Masui
  • Patent number: 5323238
    Abstract: An image signal processing apparatus inputs a video signal, delays it by one field using a field memory, multiplies the delayed signal by a value K (K less than 1), adds the output from the multiplication to the input signal and supplies the sum to the field memory. The level of the signal read out from the field memory is compared with a predetermined value, and based on the result of that comparison, the video signal being input is substantially inhibited from being supplied to the adding means. The signal obtained by multiplying the immediately-preceding field signal by k, and the present-field signal, are cyclically added, so that the amplitude can be gradually increased. The comparison inhibits addition of a new field signal when the level of that stored in the field memory has reached a predetermined level.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: June 21, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Yoshitake Nagashima, Teruo Hieda, Tadayoshi Nakayama
  • Patent number: 5276528
    Abstract: A color video signal recorder is arranged to record on one and the same recording medium first and second signals which are obtained by frequency dividing at different phases the frequency modulation wave of a frequency modulated color video signal which includes a luminance signal and a carrier chrominance signal.
    Type: Grant
    Filed: December 13, 1992
    Date of Patent: January 4, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisashi Ishikawa, Yoshitake Nagashima, Katsuji Yoshimura, Susumu Kozuki, Koji Takahashi, Kenichi Nagasawa
  • Patent number: 5249052
    Abstract: A system comprises a video camera for producing one field portion of a video signal in a second predetermined period during a first predetermined period which is longer than the second predetermined period, a recorder for recording the one field portion of the video signal from the video camera in the second predetermined period during the first predetermined period and a display device arranged to make a vertical scanning from the upper to the lower side of an effective display surface in the second predetermined period during the first predetermined period for displaying an image related to the video signal produced from the video camera.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: September 28, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Masahide Hasegawa, Kenichi Nagasawa, Koji Takahashi
  • Patent number: 5229891
    Abstract: In an apparatus for recording an information signal on a recording medium forming many parallel tracks on the medium and for reproducing the information signal from the medium, a tracking control system is arranged to record a pilot signal of a given frequency along with the information signal in the first of the many tracks; to have the pilot signal also recorded in second and third tracks adjoining the first track on both sides thereof but at pilot signal phases shifted from the pilot signal phase of the first track to equal degrees in the directions opposite to each other at parts of the second and third tracks aligned perpendicularly to the longitudinal direction of the first track; and, in reproducing the information signal, the position of the recording medium and that of a reproducing head relative to each other are controlled on the basis of the pilot signal of the given frequency reproduced by the reproducing head from the first track along with the information signal.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: July 20, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Yoshimura, Koji Takahashi, Kenichi Nagasawa, Shinichi Yamashita, Motokazu Kashida, Mitsuhiro Otokawa
  • Patent number: 5229756
    Abstract: An image control apparatus which is essentially composed of a movement detector, a judging device, and a controller wherein the movement detector detects the movement of the operator and generates a movement signal corresponding to the detected movement of the operator. The judgement device determines the state of the operator on the basis of the movement signal provided by the movement detector. The controller controls the image in accordance with the movement signal and the judgement of the judgement device. The movement detector, judging device and the controller cooperate so as to control the image in accordance with the movement of the operator.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: July 20, 1993
    Assignee: Yamaha Corporation
    Inventors: Naohiro Kosugi, Katsuji Yoshimura, Youji Semba
  • Patent number: 5194997
    Abstract: A data recorder has a first recording mode in which a rotary head records, on a tape-shaped recording medium, main data related to main information by forming many parallel tracks in a first area of the medium which extends in the lengthwise direction of the medium; and a second recording mode in which the rotary head records on the medium only sub-code data which is other than the main data by repeatedly recording the sub-code data many times forming many parallel tracks in a second area which extends in the lengthwise direction of the medium and in parallel to the first area.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: March 16, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Susumu Kozuki, Katsuji Yoshimura, Toshiyuki Masui
  • Patent number: 5164835
    Abstract: An automatic focusing device for a camera is arranged to binary-code luminance levels obtained in a plurality of areas set on an image sensing plane; to detect any change in the binary coded inforamtion between timewise different fields; and to compute a degree and range of the change. An automatic focusing action is brought to a stop when the computed degree of change exceeds a predetermined value on the assumption that the change results from a movement of the camera due to camera shake or panning. In case that the degree of change is less than the predetermined value, the change is considered to have resulted from a movement of an object to be photographed. In that event, the focusing action is allowed to continue by tracing the moving object witha focus detecting zone.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: November 17, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihiko Yamada, Akihiro Fujiwara, Masamichi Toyama, Hirofumi Suda, Kitahiro Kaneda, Katsuji Yoshimura