Patents by Inventor Susumu Matsumura

Susumu Matsumura 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: 6445365
    Abstract: This invention relates to an image display apparatus having first image generating means for displaying first image information by a plurality of pixels emitting light, second image generating means for displaying second image information by a plurality of pixels emitting light, the second image information being part of the first image information, visual axis detecting means for detecting an observer's visual axis direction, optical means for combining a first image from the first image generating means and a second image from the second image generating means, moving the second image relative to the first image in conformity with an output signal from the visual axis detecting means and turning it to the observer's pupil, the marginal portion of the second image being made substantially coincident with the boundary between the pixels of the first image when the images are combined, and image display changing means for changing the first image information and the second image information on the ba
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: September 3, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naosato Taniguchi, Susumu Matsumura, Yoko Yoshinaga, Shin Kobayashi, Toshiyuki Sudo, Hideki Morishima, Tadashi Kaneko
  • Patent number: 6343137
    Abstract: A method of processing an image comprises the steps of: supplying a photographing condition and/or a conversion process condition, e.g., at the time of photographing; using the supplied photographing condition and the supplied conversion process condition as parameters; and performing a processing, such as a conversion process, for an image signal of an image by using the parameters.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: January 29, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Kimura, Koji Takahashi, Kazunobu Urushihara, Susumu Matsumura, Makoto Katsuma, Hiroshi Ohmura
  • Patent number: 6246451
    Abstract: The present invention relates to a stereoscopic image displaying method and stereoscopic image displaying apparatus for interchangeably displaying a stereoscopic image and a two-dimensional image or for displaying a mixed stereoscopic image and two-dimensional image. In accordance with the present invention, light from a surface illuminant is passed through a mask substrate in which a mask pattern comprised of a plurality of apertures is formed. The light then is guided through a cylindrical lens array and a light directivity control element of polymer distributed liquid crystal having a stripe pattern, and thereafter the light irradiates a transmissive display device for displaying a stripe image having a parallax, or a two-dimensional, image. Control region stripes of the light directivity control element are brought into a non-scattering state when the stripe image is displayed on the display device.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: June 12, 2001
    Assignee: Mixed Reality Systems Laboratory Inc.
    Inventors: Susumu Matsumura, Naosato Taniguchi, Hideki Morishima, Hiroyasu Nose
  • Patent number: 5879837
    Abstract: A styrylcoumarin compound jointing a styryl group by--(C.dbd.C)n--portion and having --NR.sub.1 R.sub.2 group, wherein n is an integer of 2 to 4, and each R is a proton or an alkyl group having 1 to 10 carbon atoms. A photopolymerizable composition comprises the styrylcoumarin compound as a photosensitizer, a polymerization initiator and a polymerizable compound. A photocrosslinking composition comprises the styrylcoumarin compound as a photosensitizer, a crosslinking agent and a polymerizable compound. A volume phase hologram recording medium which comprises the styrylcoumarin compound, a crosslinking agent and a polymer comprising a carbazole.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: March 9, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoko Yoshinaga, Susumu Matsumura, Naosato Taniguchi, Shin Kobayashi, Toshiyuki Sudo, Hideki Morishima, Tadashi Kaneko
  • Patent number: 5841755
    Abstract: In a magnetooptical information recording-reproducing apparatus, recording of information is performed such that a laser beam is irradiated on a magnetooptical information recording medium via an optical head while applying a magnetic field to the beam irradiated portion of the recording medium onto which information pits are formed by utilizing the difference in the direction of magnetization thereof. The magnetooptical information recording-reproducing apparatus is provided with a band-like shielding plate which is arranged in an optical path of a reflected light from the recording medium upon application of the laser beam thereto in a direction perpendicular to tracks of the recording medium. Reproduction of information recorded on the recording medium is effected by detecting the beam which is not shielded by the shielding plate by use of a photodetector.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: November 24, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakuni Yamamoto, Susumu Matsumura, Hiroaki Hoshi, Eiji Yamaguchi
  • Patent number: 5790284
    Abstract: This specification discloses a displaying apparatus having a display emitting light, and an optical element formed by two holograms each having optical power and partially overlapping each other. The light from the display is diffracted by one of the holograms to be directed to an observer's left pupil, and is diffracted by the other hologram to be directed to the observer's right pupil.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: August 4, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naosato Taniguchi, Susumu Matsumura, Yoko Yoshinaga, Shin Kobayashi, Toshiyuki Sudo, Hideki Morishima, Tadashi Kaneko
  • Patent number: 5786117
    Abstract: An optical information recording medium includes a base, a reflecting layer formed on the base, a second layer formed parallel to the first reflecting layer at a predetermined distance from the same, and a recording layer formed between the first and second reflecting layers. The recording layer has an array of a plurality of cells having different refractive indices which are changed when irradiated with a light beam. The intensity of the light beam is modulated according to information. Irradiating the recording layer with the modulated light beam causes changes in the refractive index according to the intensity of the light beam. In another aspect, the wavelength of the light beam is changed within a predetermined range including at least one wavelength at which multiple interference occurs between the first and second reflecting layers with respect to each cell. The wavelength of light which has effective reflecting multiple interference is detected.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: July 28, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroaki Hoshi, Hideki Morishima, Masakuni Yamamoto, Eiji Yamaguchi, Susumu Matsumura
  • Patent number: 5768219
    Abstract: An optical information recording and/or reproducing apparatus includes an irradiating device including an objective lens, having a curved surface, for irradiating a recording light beam to a magnetooptical recording medium having at least two magnetic layers, which are a recording layer and a reproduction layer, and which are exchanged-coupled to each other, and a magnetic layer for controlling the exchange-coupling force to block the exchange-coupling force between the recording and reproduction layers, a device for applying an external magnetic field modulated according to an information signal to be recorded on the beam irradiated portion of the recording medium to record information on the recording layer and to orient magnetization of the reproduction layer in a direction parallel to the external magnetic field, a splitting device including a polarizing beam splitter for splitting at least light produced by a magnetooptic effect of the recording medium and light produced by diffraction at the curved surf
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: June 16, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakuni Yamamoto, Susumu Matsumura, Hiroaki Hoshi, Eiji Yamaguchi
  • Patent number: 5723633
    Abstract: A pyran derivative has a structure ofR.sup.2 R.sup.3 C.dbd.(C.sub.5 H.sub.2 R.sup.1 O)--(CH.dbd.CH).sub.n --C.sub.6 H.sub.2 R.sup.6 R.sup.7 --NR.sup.4 R.sup.5wherein n is 3 or 4; R.sup.1 is a proton, alkyl or phenyl group; each of R.sup.2 and R.sup.3 is independently a cyano, alkoxycarbonyl having an alkyl, acyl having an alkyl, aracyl having phenyl, sulfonyl, aryl, or aryloxy; each of R.sup.4 and R.sup.5 is an alkyl group; and each of R.sup.6 and R.sup.7 is a proton, provided that R.sup.4 and R.sup.5 are alkyl groups, and a pair of R.sup.4 and R.sup.6 as well as a pair of R.sup.5 and R.sup.7 can be bonded to each other to form a heterocycle.A photosensitive composition comprises a polymerizable compound, a polymerization initiator and a photosensitizer which is the pyran derivative. A photosensitive resin composition comprises a crosslinkable polymer, a crosslinking agent and the photosensitizer.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: March 3, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Kobayashi, Susumu Matsumura, Naosato Taniguchi, Yoko Yoshinaga, Toshiyuki Sudo, Hideki Morishima, Tadashi Kaneko
  • Patent number: 5717506
    Abstract: A magneto-optical disk according to the present invention has a transmission directory and a reception directory. An image to be transmitted is stored under the transmission directory as a single file, while a received image is stored under the reception directory as a single file. The operator designates a desired file stored under each of the directories for printing or transmission.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: February 10, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakuni Yamamoto, Kiyonobu Endo, Susumu Matsumura, Hiroaki Hoshi, Koyo Hasegawa, Eiji Yamaguchi, Ichiro Iida, Hideki Morishima
  • Patent number: 5712840
    Abstract: An optical information recording/reproducing apparatus is disclosed. In the apparatus, a light beam polarized in a predetermined direction is irradiated onto an opto-magnetic recording medium to which a pre-determined magnetic field is applied. The light beam from the recording medium is condensed by the optical device and the condenced light beam is detected by the two-division detector. The two-division detector has a division line extending in a direction perpendicular to tracks on the recording medium. According to the apparatus, crosstalks and jitters can be eliminated and reproduction with high reliability can be realized.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: January 27, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Susumu Matsumura, Masakuni Yamamoto, Eiji Yamaguchi, Hiroaki Hoshi, Hideki Morishima
  • Patent number: 5701279
    Abstract: A minute light spot is irradiated on an information track on a recording surface of a recording medium from an optical head. When reproducing an information mark train recorded on the recording surface by the mark position recording method, light reflected by or transmitted through the recording medium is guided to a divided photosensor having a division line extending in a direction perpendicular to the track. A plurality of outputs from the divided photosensor is arithmetically processed to thereby detect the central position of the information mark.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: December 23, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroaki Hoshi, Susumu Matsumura, Masakuni Yamamoto, Eiji Yamaguchi
  • Patent number: 5668872
    Abstract: An information processing method and system in which coded or incomplete information is transmitted through a space or through a predetermined transmission line and is received by a user. A program or data needed to demodulate the information is read out from a recording medium, and the received information is demodulated using the read out program or data.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: September 16, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Morishima, Kiyonobu Endo, Susumu Matsumura, Hiroaki Hoshi, Koyo Hasegawa, Masakuni Yamamoto, Eiji Yamaguchi, Ichiro Iida
  • Patent number: 5625493
    Abstract: An image display apparatus includes an image generator for generating first light having image information, and a beam combiner for superimposing the first light and second light which is incident upon the beam combiner from a direction different from that of the first light, and for guiding the superimposed light to a pupil of an observer. Also provided is a reflector positioned in a direction different from the incident direction of the second light on the beam combiner. The first light is incident upon the reflector via the beam combiner, and is reflected back to the beam combiner after being reflected by the reflector.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: April 29, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Susumu Matsumura, Naosato Taniguchi, Yoko Yoshinaga, Shin Kobayashi, Toshiyuki Sudo, Hideki Morishima, Tadashi Kaneko
  • Patent number: 5612709
    Abstract: The present invention relates to a multi-eye image displaying apparatus and a method using this apparatus. The apparatus comprises an image displaying element, provided for each of right and left eyes and a virtual image moving element for moving at least one of the virtual images for the right and left eyes in a horizontal direction. The image displaying element has an illuminating element for emitting light and, a display unit for displaying an image by using the light from the illuminating element. The image displaying element also has an optical system for projecting the light from the display unit toward a pupil of a viewer and, as a result, forming virtual images of the image to be displayed on the display unit in front of the pupil.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: March 18, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyuki Sudo, Susumu Matsumura, Naosato Taniguchi, Yoko Yoshinaga, Shin Kobayashi, Hideki Morishima, Tadashi Kaneko
  • Patent number: 5610897
    Abstract: In an optical information recording/reproducing apparatus, the reproduction of information is performed as following manner. A light spot is formed on a recording medium on which information is recorded so that a phase of light reflected by a small region as an information pit is different from a phase of light reflected by other regions. Upon scanning the recording medium with the light spot, a leading edge and a trailing edge of the information pit in the scanning direction are respectively detected. A detection signal for the leading edge of the information pit and a detection signal for the trailing edge of the information pit are synthesized to effect the reproduction of information.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: March 11, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakuni Yamamoto, Susumu Matsumura, Hiroaki Hoshi, Eiji Yamaguchi
  • Patent number: 5589956
    Abstract: An image display apparatus includes a plurality of image display elements respectively assigned to different partial image information regions of an image to be displayed, and a hologram optical element for diffracting a plurality of light beams from the plurality of image display elements and displaying the diffracted light beams as continuous single image information. By including a plurality of image display elements, each of the image display elements having a large number of pixels, and a hologram optical element for forming a synthesized image by diffracting a plurality of image light beams from the image display elements, the hologram optical element diffracts the plurality of image light beams so as to display a synthesized image by interpolating information between pixels of a plurality of images to be synthesized.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: December 31, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Morishima, Susumu Matsumura, Naosato Taniguchi, Yoko Yoshinaga, Shin Kobayashi, Toshiyuki Sudo, Tadashi Kaneko
  • Patent number: 5577017
    Abstract: An optical information recording and/or reproducing apparatus includes an irradiating device for irradiating light polarized in a predetermined direction onto a magnetooptical recording medium having a plurality of tracks, the irradiating device includes an objective lens, having a curved surface, for converging the light irradiated onto the recording medium to form a micro spot, an applying device for applying a predetermined magnetic field to the recording medium and a detecting device for detecting interference light caused by interference of light produced by a magnetooptic effect of the recording medium and light produced by diffraction at the curved surface of the lens, and for reproducing recording information.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: November 19, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakuni Yamamoto, Susumu Matsumura, Hiroaki Hoshi, Eiji Yamaguchi
  • Patent number: 5539718
    Abstract: An optical head includes an irradiating device for irradiating a recording medium with a light beam, a separating device disposed in an optical path between the recording medium and the irradiating device, which is provided for separating a portion of the light beam traveling from the irradiating device to the recording medium, and a detecting device for detecting the portion of the beam separated by the separating device, which has a plurality of sensor portions.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: July 23, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroaki Hoshi, Susumu Matsumura, Masakuni Yamamoto, Eiji Yamaguchi
  • Patent number: 5515122
    Abstract: An image displaying apparatus capable of displaying to an observer a more stereoscopic image with enhanced presence and realism. The apparatus has a display unit which irradiates a beam and an optical system which directs a light beam from said display to a pupil of an observer, a virtual image surface formed by said optical system being a curved surface.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: May 7, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Morishima, Susumu Matsumura, Naosato Taniguchi, Yoko Yoshinaga, Shin Kobayashi, Toshiyuki Sudo, Tadashi Kaneko, Norihiro Nanba, Takeshi Akiyama