Patents by Inventor Syuzo Kaneko

Syuzo Kaneko 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: 6091388
    Abstract: A driving method for an optical modulation device is applicable to driving of an optical modulation device, e.g. a liquid crystal device having a matrix electrode arrangement comprising a group of scanning electrodes, a group of signal electrodes oppositely spaced from the group of scanning electrodes, and an optical modulation material (e.g. a liquid crystal) showing bistability with respect to an electric filed applied thereto disposed between the groups of scanning electrodes and signal electrodes.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: July 18, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5886680
    Abstract: A liquid crystal apparatus comprises a liquid crystal device comprising a group of scanning electrodes and a group of signal electrodes intersecting each other to form an electrode matrix, and a chiral smectic liquid crystal disposed in a non-helical alignment state so as to form a picture element at each intersection of the scanning electrodes and the signal electrodes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 23, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5841417
    Abstract: A liquid crystal apparatus includes a liquid crystal device having a group of scanning lines and a group of signal lines intersecting each other to form a matrix of picture elements, and a chiral smectic liquid crystal disposed so as to form the picture elements.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 24, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5831587
    Abstract: A liquid crystal apparatus includes a liquid crystal device having a group of scanning lines and a group of signal lines intersecting each other to form a matrix of picture elements, and a chiral smectic liquid crystal disposed so as to form the picture elements. The device is driven by: (a) applying a scanning selection signal and a scanning non-selection signal to the scanning lines, (b) applying data signals having a predetermined voltage determined according to an environmental temperature and including a gradation data signal to the signal lines so as to provide a selected picture element at an intersection of a selected scanning line receiving the scanning selection signal and a selected signal electrode with a ratio between an area occupied with one orientation state and an area occupied by another orientation state, respectively of the chiral smectic liquid crystal, depending on given gradation data, and (c) periodically applying the scanning selection signal to the scanning lines.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 3, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5825390
    Abstract: A liquid crystal apparatus includes a liquid crystal device having a group of scanning electrodes and a group of signal electrodes intersecting each other to form an electrode matrix, and a chiral smectic liquid crystal having a threshold voltage varying depending on a voltage pulse width disposed so as to form a picture element at each intersection of the scanning electrodes and the signal electrodes.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 20, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5812108
    Abstract: A driving method for an optical modulation device is applicable to driving of an optical modulation device, e.g. a liquid crystal device having a matrix electrode arrangement comprising a group of scanning electrodes, a group of signal electrodes oppositely spaced from the group of scanning electrodes, and an optical modulation material (e.g. a liquid crystal) showing bistability with respect to an electric filed applied thereto disposed between the groups of scanning electrodes and signal electrodes.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: September 22, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5790449
    Abstract: A liquid crystal apparatus includes a liquid crystal device having a group of scanning electrodes and a group of signal electrodes intersecting each other to form an electrode matrix, and a chiral smectic liquid crystal having a threshold voltage varying depending on a voltage pulse width disposed so as to form a picture element at each intersection of the scanning electrodes and the signal electrodes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 4, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5696525
    Abstract: A liquid crystal apparatus comprises a liquid crystal device comprising a group of scanning electrodes and a group of signal electrodes intersecting each other to form an electrode matrix, and a chiral smectic liquid crystal disposed so as to form a picture element at each intersection of the scanning electrodes and the signal electrodes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 9, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5696526
    Abstract: A liquid crystal apparatus comprises a liquid crystal device including scanning electrodes and signal electrodes intersecting each other, and a chiral smectic liquid crystal disposed therebetween. The chiral smectic liquid crystal assumes a first orientation state when supplied with a pulse voltage of one polarity exceeding a first threshold voltage, a second orientation state when supplied with a pulse voltage of the other polarity exceeding a second threshold voltage, and a third orientation state when released from application of the pulse voltage of one or the other polarity.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 9, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5621427
    Abstract: A driving method for an optical modulation device is applicable to driving of an optical modulation device, e.g. a liquid crystal device having a matrix electrode arrangement comprising a group of scanning electrodes, a group of signal electrodes oppositely spaced from the group of scanning electrodes, and an optical modulation material (e.g. a liquid crystal) showing histability with respect to an electric field applied thereto disposed between the groups of scanning electrodes and signal electrodes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 15, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5592192
    Abstract: A liquid crystal apparatus comprises a liquid crystal device having scanning electrodes arranged in a matrix with and spaced apart from signal electrodes with a liquid crystal showing different stable states in accordance with different applied voltages and having a memory function disposed therebetween. First drive circuitry selects and sequentially drives the scanning electrodes by application of a scanning selection signal, and second drive circuitry drives the signal electrodes by application of a writing voltage and a first non-writing voltage corresponding to display contents in synchronism with the application of the scanning selection signal. The first drive circuitry applies reset voltages to the pixels of the liquid crystal to make orientation of the liquid crystal's molecules uniform before the selection of the scanning electrode.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: January 7, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5565884
    Abstract: A driving method is provided for driving an optical modulation device. The device has picture elements arranged in the form of a matrix consisting of a plurality of rows and a plurality of columns defined by the intersections of scanning electrodes and signal electrodes, and a liquid crystal having a memory function. The picture elements in each row are selectively supplied with either a voltage for orienting the liquid crystal to one display state, or another voltage for orienting the liquid crystal to another display state.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 15, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5548303
    Abstract: An optical modulation apparatus has a matrix electrode arrangement comprising scanning electrodes and signal electrodes oppositely spaced from the scanning electrodes. Scanning signals are selectively applied sequentially and periodically to the scanning electrodes and information signals are selectively applied to the signal electrodes in synchronism with the scanning signals to effect optical modulation of an optical modulation material showing a first stable state and a second stable state with respect to an electric field applied thereto interposed between the scanning and signal electrodes.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: August 20, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5448383
    Abstract: A driving method for an optical modulation device is applicable to driving of an optical modulation device, e.g. a liquid crystal device having a matrix electrode arrangement comprising a group of scanning electrodes, a group of signal electrodes oppositely spaced from the group of scanning electrodes, and an optical modulation material (e.g. a liquid crystal) showing bistability with respect to an electric filed applied thereto disposed between the groups of scanning electrodes and signal electrodes.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: September 5, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 5418634
    Abstract: A driving method for an optical modulation device is applicable to driving of an optical modulation device, e.g., a liquid crystal device having a matrix electrode arrangement comprising a group of scanning electrodes, a group of signal electrodes oppositely paced from the group of scanning electrodes, and an optical modulation materials showing bistability with respect to an electric field applied thereto disposed between the groups of scanning electrodes and signal electrodes.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: May 23, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 4729642
    Abstract: In a time-sharing driving method for a device comprising electrode matrix wherein the electrode matrix comprises two electrode groups oppositely spaced from each other, each comprising a plurality of electrodes, the two electrode groups being arranged so as to interesect with each other to form matrix intersecting points, one electrode group being assigned to serve as a row electrode while the other electrode group is assigned to serve as a signal electrode, voltage being applied to each row electrode in a time-sharing manner, the time-sharing driving method is characterized in that voltage applied to a selected point in an addressed row electrode is in a direction opposite to that of voltage applied to the other matrix intersecting points.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: March 8, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventor: Syuzo Kaneko
  • Patent number: 4655561
    Abstract: A driving method for an optical modualtion device is applicable to driving of an optical modulation device, e.g. a liquid crystal device having a matrix electrode arrangement comprising a group of scanning electrodes, a group of signal electrodes oppositely spaced from the group of scanning electrodes, and an optical modulation material (e.g. a liquid crystal) showing bistability with respect to an electrical field applied thereto disposed between the groups of scanning electrodes and signal electrodes.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: April 7, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Kanbe, Kazuharu Katagiri, Syuzo Kaneko
  • Patent number: 4548476
    Abstract: In a time-sharing driving method for a device comprising electrode matrix wherein the electrode matrix comprises two electrode groups oppositely spaced from each other, each comprising a plurality of electrodes, the two electrode groups being arranged so as to intersect with each other to form matrix intersecting points, one electrode group being assigned to serve as a row electrode while the other electrode group is assigned to serve as a signal electrode, voltage being applied to each row electrode in a time-sharing manner, the time-sharing driving method is characterized in that voltage applied to a selected point in an addressed row electrode is in a direction opposite to that of voltage applied to the other matrix intersecting points.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: October 22, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventor: Syuzo Kaneko