Patents by Inventor Masatoshi Itoh

Masatoshi Itoh 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).

  • Publication number: 20110299018
    Abstract: A method for producing a liquid crystal display device (100) according to the present invention includes the steps of preparing a liquid crystal cell (110) including a rear substrate (120) having an alignment film (126), a front substrate (140) having an alignment film (146), and a mixture (C) interposed between the alignment film (126) of the rear substrate (120) and the alignment film (146) of the front substrate (140), the mixture (C) containing a liquid crystal compound and a photopolymerizable compound dissolved in the liquid crystal compound at a concentration of 0.22 wt. % or higher and 0.28 wt. % or less; and polymerizing the photopolymerizable compound contained in the mixture of the liquid crystal cell (110) to form alignment sustaining layers (130, 150) respectively on the alignment films (126, 146) of the rear substrate (120) and the front substrate (140).
    Type: Application
    Filed: February 22, 2010
    Publication date: December 8, 2011
    Inventor: Masatoshi Itoh
  • Publication number: 20110103818
    Abstract: A control unit temporarily stops an image carrier when transfer of an image formed using a developer to a recording medium ends. Thereafter, the control unit controls a drive source to intermittently drive the image carrier N times. A measuring unit measures an amount of rotation of the image carrier when the image carrier is intermittently driven. A determination unit determines an amount of rotation for stop instruction issuance that will be applied to a next drive. The amount of rotation for stop instruction issuance is based on an amount of inertial rotation measured from when a stop instruction is issued until when the image carrier stops rotating, and a target amount of rotation for each time the image carrier is driven.
    Type: Application
    Filed: October 15, 2010
    Publication date: May 5, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masatoshi Itoh
  • Patent number: 7199602
    Abstract: An inspection device for a display device includes: an inspection circuit which judges a defect of each of pixels based on current which flows through an inspection interconnect connected with interconnects of the display device; and an inspection driver circuit which drives by supplying a necessary signal to the display device. The inspection circuit includes: a correction circuit which generates a first correction current which substantially cancels a first current which flows through the inspection interconnect when all the pixels are set to an off-state based on the first current; a detection circuit which detects a measured value for each pixel obtained by correcting a measured current which flows through the inspection interconnect by the first correction current each time the pixels are sequentially set to an on-state; and a defect judgment circuit which judges a defect of each of the pixels based on the measured value.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: April 3, 2007
    Assignee: Wintest Corporation
    Inventors: Shoji Nara, Masatoshi Itoh, Makoto Ookuma, Wataru Yamamoto
  • Publication number: 20060255827
    Abstract: An inspection device for a display device includes: an inspection circuit which judges a defect of each of pixels based on current which flows through an inspection interconnect connected with interconnects of the display device; and an inspection driver circuit which drives by supplying a necessary signal to the display device. The inspection circuit includes: a correction circuit which generates a first correction current which substantially cancels a first current which flows through the inspection interconnect when all the pixels are set to an off-state based on the first current; a detection circuit which detects a measured value for each pixel obtained by correcting a measured current which flows through the inspection interconnect by the first correction current each time the pixels are sequentially set to an on-state; and a defect judgment circuit which judges a defect of each of the pixels based on the measured value.
    Type: Application
    Filed: July 20, 2006
    Publication date: November 16, 2006
    Applicant: WINTEST CORPORATION
    Inventors: Shoji Nara, Masatoshi Itoh, Makoto Ookuma, Wataru Yamamoto
  • Patent number: 6891532
    Abstract: The present invention provides a picture element inspecting apparatus and method for an active matrix type display that is constituted by an LCD array device or an EL array device, which is capable of canceling the irregularities in source switches 13, the noise caused by device driving signals, and the irregularities in devices in the measurement apparatus, and enhancing the accuracy of a picture element inspection.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 10, 2005
    Assignee: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma
  • Publication number: 20050093567
    Abstract: An inspection device for a display device includes: an inspection circuit which judges a defect of each of pixels based on current which flows through an inspection interconnect connected with interconnects of the display device; and an inspection driver circuit which drives by supplying a necessary signal to the display device. The inspection circuit includes: a correction circuit which generates a first correction current which substantially cancels a first current which flows through the inspection interconnect when all the pixels are set to an off-state based on the first current; a detection circuit which detects a measured value for each pixel obtained by correcting a measured current which flows through the inspection interconnect by the first correction current each time the pixels are sequentially set to an on-state; and a defect judgment circuit which judges a defect of each of the pixels based on the measured value.
    Type: Application
    Filed: September 17, 2004
    Publication date: May 5, 2005
    Inventors: Shoji Nara, Masatoshi Itoh, Makoto Ookuma, Wataru Yamamoto
  • Patent number: 6847223
    Abstract: An active matrix substrate has a plurality of pixel drive cells, each of which includes a switching element and a capacitor. The capacitor is charged and discharged through the switching element, and a charging current based on a charge stored in the capacitor and a discharge current after discharging the capacitor are sampled. The charging current is sampled at a plurality of points on a time axis in consideration of the variation of the on-resistance of the switching element. Since the load on a path through which an inspection current (charging current or discharge current) flows depends on the position of the pixel drive cells, the wave height value between the charging current and the discharge current is calculated for each pixel drive cell based on the discharge current, and whether or not the pixel drive cell has a defect is determined based on the wave height value.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: January 25, 2005
    Assignee: Wintest Corporation
    Inventors: Shoji Nara, Masatoshi Itoh, Makoto Ookuma
  • Publication number: 20040217773
    Abstract: An active matrix substrate has a plurality of pixel drive cells, each of which includes a switching element and a capacitor. The capacitor is charged and discharged through the switching element, and a charging current based on a charge stored in the capacitor and a discharge current after discharging the capacitor are sampled. The charging current is sampled at a plurality of points on a time axis in consideration of the variation of the on-resistance of the switching element. Since the load on a path through which an inspection current (charging current or discharge current) flows depends on the position of the pixel drive cells, the wave height value between the charging current and the discharge current is calculated for each pixel drive cell based on the discharge current, and whether or not the pixel drive cell has a defect is determined based on the wave height value.
    Type: Application
    Filed: February 13, 2004
    Publication date: November 4, 2004
    Inventors: Shoji Nara, Masatoshi Itoh, Makoto Ookuma
  • Patent number: 6633135
    Abstract: It is an object of the present invention to provide an apparatus and method for evaluating an organic EL display, with which there is a simple drive circuit used for testing an organic EL display 10, evaluation of high reliability can be achieved, and an evaluation of the organic EL display 10 itself is performed prior to the installation of finished product drive circuits to the organic EL display 10, which makes it possible to suppress the decrease in yield caused by dealing with defective products due to the evaluation results.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: October 14, 2003
    Assignee: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma, Tomoharu Innami
  • Publication number: 20020154108
    Abstract: The present invention provides a picture element inspecting apparatus and method for an active matrix type display that is constituted by an LCD array device or an EL array device, which is capable of canceling the irregularities in source switches 13, the noise caused by device driving signals, and the irregularities in devices in the measurement apparatus, and enhancing the accuracy of a picture element inspection.
    Type: Application
    Filed: April 22, 2002
    Publication date: October 24, 2002
    Applicant: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma
  • Publication number: 20020047565
    Abstract: It is an object of the present invention to provide an apparatus and method for evaluating an organic EL display, with which there is a simple drive circuit used for testing an organic EL display 10, evaluation of high reliability can be achieved, and an evaluation of the organic EL display 10 itself is performed prior to the installation of finished product drive circuits to the organic EL display 10, which makes it possible to suppress the decrease in yield caused by dealing with defective products due to the evaluation results.
    Type: Application
    Filed: July 3, 2001
    Publication date: April 25, 2002
    Applicant: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma, Tomoharu Innami
  • Patent number: 6249653
    Abstract: Camera body and taking lens unit are constructed such that they may rotate relative to each other, and circuit board of connector to which taking lens unit is mounted and the electrical circuitry inside the camera body are connected by means of flexible circuit board. Further, the grounding line is strengthened by having reinforcing plate that is in electrical contact with detachable circuit board comprise a metal plate and by having metal plate connected with the grounding line of the camera body to move against reinforcing plate.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: June 19, 2001
    Assignee: Minolta Co., Ltd.
    Inventors: Hisanori Itoh, Masatoshi Itoh, Mitsuhiro Sugita
  • Patent number: 6072481
    Abstract: The present invention relates to an electronic catalog data creating and/or displaying apparatus and method. The electronic catalog data creating apparatus comprises a user interface through which a user enters parts data and a data converter which converts data, entered through the user interface, to a predetermined data format. The user interface, in turn, comprises a property data input unit for receiving part property characteristics and its contents and a value range input unit for receiving the range of input or presentation values or presentation conditions of each property entered through the property data input unit.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: June 6, 2000
    Assignee: Comnes Co., Ltd
    Inventors: Seitaro Matsushita, Masatoshi Itoh, Mamoru Kawanobe
  • Patent number: 6035292
    Abstract: A knowledge base system for building a knowledge base. The knowledge base system includes an interface device that receives said knowledge base by a user, and a generating device that generates a program based upon the knowledge base. The interface device includes a field that stores an output knowledge variable, input and local fields that store knowledge variables for operating the output knowledge variables, and a field that stores a computing equation of declarative representation that utilizes knowledge variables using operands as other knowledge variables.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: March 7, 2000
    Assignee: Comnes Co., Ltd.
    Inventors: Seitaro Matsushita, Masatoshi Itoh, Mamoru Kawanobe
  • Patent number: 5493640
    Abstract: The fill processing time for filling a closed figure identified by one stroke is reduced. The difference between the total number of line segments in the plus Y axis direction and that in the minus Y direction intersecting a line perpendicular to a specific first direction is counted when a figure identified by one stroke is scanned in the X axis direction. Pixel positions in a range in which the counting result is not "0" are filled.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: February 20, 1996
    Assignee: International Business Machines Corporation
    Inventors: Masatoshi Itoh, Masaya Mori, Yasumasa Tomonaga
  • Patent number: 5398095
    Abstract: This zooming device performs auto-zooming by determining the focal length based on the object distance. When the degree of zooming is large, it performs zooming at a speed appropriate to that degree. Further, when a conversion lens is mounted to change the focal length, the device determines focal length while taking into account the degree of change in focal length effected by the conversion lens.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: March 14, 1995
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Takeya Tsukamoto, Masatoshi Itoh
  • Patent number: 5331961
    Abstract: In a probe, two scintillators are arranged in tandem, the front end surfaces of two optical fibers transmitting the light emitted by the scintillators are connected to the rear of the scintillators and two photoelectric converters converting the light to pulse signals are connected to the rear of the optical fibers. A gate delay generator produces a gate signal from one pulse signal. A delay amplifier delays the other pulse signal. An M.C.A. will count up in case the pulse signal output by the delay amplifier is obtained during the gate signal.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: July 26, 1994
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Makoto Inaba, Masakazu Gotanda, Hiromu Takahashi, Takashi Nakamura, Masatoshi Itoh, Masaki Matsumoto, Hiroshi Watabe
  • Patent number: 5258798
    Abstract: A camera has a zoom lens which includes a variator and a compensator. However, in order to simplify the whole external form of the camera, reduce the size thereof, and further to materially eliminate the treatment of appearance of the taking lens, a linear movement means which includes a threaded shaft provided for linearlly moving a variator and a compensator composing a zoom lens and the nuts to be engaged with the threaded shaft and an electrically driving means for driving this linear movement means are covered by a housing of a camera body, a zoom operation key provided on this housing is caused to be operationally related to an electric circuit which drives and controls the motor.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: November 2, 1993
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Takashi Iida, Hiroyuki Tsumazawa, Masatoshi Itoh, Hiroshi Kiten
  • Patent number: 5225940
    Abstract: An in-focus detection apparatus used for a video camera includes edge width detector for detecting a plurality of edge widths of an object, and an calculation device for calculating the amount of driving a lens based on the distribution state of these plurality of edge width data. The apparatus uses a video signal and provides the in-focus state of an actual object with a high accuracy without requiring slight movement of a focusing lens.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: July 6, 1993
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Toru Ishii, Masatoshi Itoh, Hidenori Fukuoka
  • Patent number: 5204710
    Abstract: A camera having a zoom lens system and detecting means for detecting photographic conditions such as distance to an object, a photographic magnification and like. Differentiation between a focal length range enabling a power zoom operation and a focal length range not enabling the power zoom operation is provided by the detecting means.The zooming operation is permitted only to a short focal length side in a particular region determined by the distance to the object, the focal length and the like. Further, an auto zooming operation is permitted only in the particular region.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: April 20, 1993
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Takeya Tsukamoto, Masatoshi Itoh