Patents by Inventor Tokuji Ishida

Tokuji Ishida 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: 6639625
    Abstract: High resolution composite images and ultra wide composite images are produced in a digital camera which combines a plurality of images to form a composite image on a single sheet. An image sensing unit includes a movable image sensing optical unit having a first and second focal lengths and a two-dimensional image sensing device. The image sensing unit is driven to control the optical axis of the image sensing optical unit so as to capture a plurality of images via the two-dimensional image sensing device. The plurality of images are combined to produce a composite image. An ultra wide composite image at standard resolution is produced by setting the focal length of the image sensing optical unit at a first focal length on the wide angle side, and a high resolution composite image is produced by setting the focal length of the image sensing optical unit at a second focal length on the telephoto side.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: October 28, 2003
    Assignee: Minolta Co., Ltd.
    Inventors: Tokuji Ishida, Shinya Matsuda, Masayuki Ueyama
  • Patent number: 6389153
    Abstract: A distance information generator comprises an image sensor which senses an object, a distance detector which detects a first distance between a predetermined position and the object, a memory which stores position information expressing a mutual positional relationship of the predetermined position and the position of the image sensor, and a calculator which calculates a second distance between the position of the image sensor and the object based on the first distance and the position information. A display device displays a composite image which consists of a sensed image and a virtual image for an observer, wherein the composite image is created by comparing the second distance and distance information involved in the virtual image.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: May 14, 2002
    Assignee: Minolta Co., Ltd.
    Inventors: Shigeaki Imai, Akira Sato, Takashi Kondo, Tokuji Ishida
  • Patent number: 6339510
    Abstract: A camera in which the ratio of an object to the photographing frame can be set comprises a varifocal lens in which the in-focus position is changed in accordance with the change in the focal lens and a focusing lens for correcting the focus by the varifocal lens. The size of the object is set to the desired size by using the varifocal lens, and thereafter the deviation of the in-focus point is controlled by the focusing lens. Since the zooming is carried out by using a varifocal lens, a camera can be provided in which the ratio of an object to the photographing frame can be set in a simple structure.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: January 15, 2002
    Assignee: Minolta Co., Ltd.
    Inventors: Nobuyuki Taniguchi, Masaaki Nakai, Takanobu Omaki, Tokuji Ishida, Hisayuki Masumoto, Hisashi Tokumaru, Tsuneyo Metabi
  • Patent number: 6084557
    Abstract: A video see through AR system capable of obtaining correct depth information with respect to each pixel representing a two-dimensional image is disclosed so that a portion of imagery which should appear in the background of a final picture may be properly hidden behind imagery which should appear in the foreground of the final picture. A photographing device is provided for obtaining a two-dimensional image of a real object field disposed in conjugate relationship with an observer's eyes. Also provided is a device for measuring distances with respect to each pixel to the real object to be measured. The measured distance is compared with the distance to virtual imagery with respect to each pixel and the pixel which represents the imagery disposed closer to the observer is selected for the formation of combined imagery, which is displayed on the screen of a display device.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: July 4, 2000
    Assignee: Minolta Co., Ltd.
    Inventors: Tokuji Ishida, Shigeaki Imai, Akira Sato, Susumu Tachi
  • Patent number: 6018631
    Abstract: A camera in which the ratio of an object to the photographing frame can be set comprises a varifocal lens in which the in-focus position is changed in accordance with the change in the focal lens and a focusing lens for correcting the focus by the varifocal lens. The size of the object is set to the desired size by using the varifocal lens, and thereafter the deviation of the in-focus point is controlled by the focusing lens. Since the zooming is carried out by using a varifocal lens, a camera can be provided in which the ratio of an object to the photographing frame can be set in a simple structure.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: January 25, 2000
    Assignee: Minolta Co., Ltd.
    Inventors: Nobuyuki Taniguchi, Masaaki Nakai, Takanobu Omaki, Tokuji Ishida, Hisayuki Masumoto, Hisashi Tokumaru, Tsuneyo Metabi
  • Patent number: 5809344
    Abstract: A camera includes an operation device having a plurality of operation modes for executing an operation, a mode changing device for changing over operation modes, a designation device for designating a desired operation mode as an initial mode, and a reset device for resetting the operation device to the designated initial mode.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: September 15, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Tokuji Ishida, Yasuo Nakanishi, Toshihiko Ishimura, Takehiro Katoh, Kenji Ishibashi, Yoshihiro Hara, Takashi Kondo, Hiroshi Yoshino
  • Patent number: 5758210
    Abstract: A camera includes a CCD line sensor divided into a plurality of blocks and a plurality of monitors provided near each of the divided blocks and sensing the amount of received light corresponding to each block. The storage of charge in each block of the CCD is controlled based on the amount of the light received by the monitor. Each block corresponds to each part of an object in a finder of the camera.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: May 26, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Masataka Hamada, Kazuhiko Yukawa, Tokuji Ishida, Toshio Norita
  • Patent number: 5734938
    Abstract: An automatic focusing apparatus of a camera according to the present invention includes: a focus detector which detects repeatedly focus conditions of a photographic lens and outputs successively focus signals corresponding to the focus conditions; a drive unit for driving the photographic lens for focus adjustment; a predictor for predicting an in-focus point from the plurality of focus signals from the focus detector; a control unit for controlling the drive unit to drive the photographic lens toward the in-focus point predicted by the predictor; an auxiliary light projector for projecting auxiliary light onto an object to enable detecting operation of the focus detector; and a forbidding device for forbidding the control of drive by the control unit while the auxiliary light is projected by the auxiliary light projector.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: March 31, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Masataka Hamada, Tokuji Ishida, Hiroshi Ootsuka
  • Patent number: 5731864
    Abstract: A camera includes a CCD line sensor divided into a plurality of blocks and a plurality of monitors provided near each of the divided blocks and sensing the amount of received light corresponding to each block. The storage of charge in each block of the CCD is controlled based on the amount of the light received by the monitor. Each block corresponds to each part of an object in a finder of the camera.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: March 24, 1998
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Masataka Hamada, Kazuhiko Yukawa, Tokuji Ishida, Toshio Norita
  • Patent number: 5708871
    Abstract: A camera includes a CCD line sensor divided into a plurality of blocks and a plurality of monitors provided near each Of the divided blocks and sensing the amount of received light corresponding to each block. The storage of charge in each Block of the CCD is controlled based on the amount of the light received by the monitor. Each block corresponds to each part of an object in a finder of the camera.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: January 13, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Masataka Hamada, Kazuhiko Yukawa, Tokuji Ishida, Toshio Norita, Hiroshi Ueda
  • Patent number: 5640223
    Abstract: A camera having a lens, whereby a power source in the camera is activated in response to a mechanical switch on the lens.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: June 17, 1997
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Nobuyuki Taniguchi, Masaaki Nakai, Takanobu Omaki, Tokuji Ishida, Hisayuki Masumoto, Hisashi Tokumaru, Tsuneyo Metabi
  • Patent number: 5550611
    Abstract: A camera includes an operation device having a plurality of operation modes for executing an operation, a mode changing device for changing over operation modes, a designation device for designating a desired operation mode as an initial mode, and a reset device for resetting the operation device to the designated initial mode.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: August 27, 1996
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Tokuji Ishida, Yasuo Nakanishi, Toshihiko Ishimura, Takehiro Katoh, Kenji Ishibashi, Yoshihiro Hara, Takashi Kondo, Hiroshi Yoshino
  • Patent number: 5517274
    Abstract: An automatic focusing apparatus of a camera according to the present invention includes: a focus detector which detects repeatedly focus conditions of a photographic lens and outputs successively focus signals corresponding to the focus conditions; a drive unit for driving the photographic lens for focus adjustment; a predictor for predicting an in-focus point from the plurality of focus signals from the focus detector; a control unit for controlling the drive unit to drive the photographic lens toward the in-focus point predicted by the predictor; an auxiliary light projector for projecting auxiliary light onto an object to enable detecting operation of the focus detector; and a forbidding device for forbidding the control of drive by the control unit while the auxiliary light is projected by the auxiliary light projector.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: May 14, 1996
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Masataka Hamada, Tokuji Ishida, Hiroshi Ootsuka
  • Patent number: 5483318
    Abstract: A camera includes a CCD line sensor divided into a plurality of blocks and a plurality of monitors provided near each of the divided blocks and sensing the amount of received light corresponding to each block. The storage of charge in each block of the CCD is controlled based on the amount of the light received by the monitor. Each block corresponds to each part of an object in a finder of the camera.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: January 9, 1996
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Masataka Hamada, Kazuhiko Yukawa, Tokuji Ishida, Toshio Norita, Hiroshi Ueda
  • Patent number: 5469239
    Abstract: An imaging sensing system includes a solid state image device composed of one chip and a controller for controlling the solid state image device. The solid state image device further includes an image sensor of a charge accumulation type for receiving light from an object and for outputting an electric signal to the controller. Further, an exemplary embodiment of an image device includes a decoder for decoding a control signal and for outputting a decode signal. A timing signal output indicates the timing of a charge accumulation of an image sensor controller for controlling the image sensor in accordance with the decode signal. In an exemplary embodiment, the controller includes an A/D convertor for converting the electric signal into a digital signal.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: November 21, 1995
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Tokuji Ishida, Toshio Norita, Jun Hasegawa
  • Patent number: 5434638
    Abstract: A camera having automatic focus adjusting apparatus employing a continuous photographing mode comprises a focus detecting apparatus for detecting a focusing condition of a photographic lens to output an amount of defocus, and an apparatus for detecting an amount of movement of an object by detecting the amount of defocus of the same object at different times. Since the amount of movement of the object is detected, whether the object is moving or not can be easily determined.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: July 18, 1995
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kenji Ishibashi, Tokuji Ishida, Masataka Hamada
  • Patent number: 5408291
    Abstract: An AF camera system for automatically controlling an objective lens for focusing an object includes a focus detector for generating a defocus data DF carrying information of a defocus amount and a defocus direction based on a focus condition of an object to be focused through an objective lens detected in a detection cycle, an infocus detector for detecting an infocus condition based on the defocus data, a lens driver for driving the objective lens based on the defocus amount and defocus direction carried in the defocus data DF when the infocus detection means did not detect the infocus condition; and a control for controlling the focus adjustment based on defocus data and/or the detection of the infocus condition detected by the infocus detection means.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: April 18, 1995
    Assignee: Minolta Co., Ltd.
    Inventors: Tokuji Ishida, Masataka Hamada, Jun Hasegawa, Kenji Ishibashi, Toshio Norita, Hiroshi Ootsuka
  • Patent number: 5389971
    Abstract: In an image sensor provided on a chip, there are a plurality of photodiodes for receiving light. The photodiodes are disposed in at least two rows which are spaced apart from one another. An elongated photodiode which is at least partially covered by a light shield is used to monitor the photodiodes in the first and second rows. The outputs from image sensor are amplified by first and second amplifiers which are also located on the same chip as the image sensor.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: February 14, 1995
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Tokuji Ishida, Toshio Norita, Jun Hasegawa
  • Patent number: 5379088
    Abstract: An automatic focusing camera according to the present invention is an automatic focusing camera having a plurality of operation modes, including an information input device for entering a plurality of types of photographing information, an information analyzer for analyzing the photographing information entered by the information input device based on a fuzzy inference, and a mode determining device for determining one of the operation modes based on the result of the analysis of the information analyzer.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: January 3, 1995
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Hiroshi Ueda, Hiroshi Ootsuka, Tokuji Ishida, Toshio Norita
  • Patent number: 5371567
    Abstract: An imaging sensing system includes a solid state image device composed of one chip and a controller for controlling the solid state image device. The solid state image device further includes an image sensor of a charge accumulation type for receiving light from an object and for outputting an electric signal to the controller. Further, an exemplary embodiment of an image device includes a decoder for decoding a control signal and for outputting a decode signal. A timing signal output indicates the timing of a charge accumulation of an image sensor controller for controlling the image sensor in accordance with the decode signal. In an exemplary embodiment, the controller includes an A/D convertor for converting the electric signal into a digital signal.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: December 6, 1994
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Tokuji Ishida, Toshio Norita, Jun Hasegawa