Patents by Inventor Hirosada Horiguchi

Hirosada Horiguchi 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: 9344713
    Abstract: A projector includes a lamp that emits projection light to project 3D picture, in which a right eye image and a left eye image are represented in a time division manner, to an object, a synchronization signal transmission section which transmits shutter synchronization signal to glasses having a right eye shutter and a left eye shutter to control the opened state or the closed state of the right eye shutter and the left eye shutter, based on the signal indicating a displaying period of the right eye image and the left eye image of 3D picture, and a lamp drive section that supplies AC current having peak overlapping with a period when the right eye shutter of the glasses is in the opened state and peak overlapping with a period when the left eye shutter of the glasses is in the opened state to the lamp, based on the signal.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: May 17, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hirosada Horiguchi, Hiroshi Yoshimoto, Tadashi Yamada, Keiji Fukuhara
  • Publication number: 20150124221
    Abstract: A projector includes a lamp that emits projection light to project 3D picture, in which a right eye image and a left eye image are represented in a time division manner, to an object, a synchronization signal transmission section which transmits shutter synchronization signal to glasses having a right eye shutter and a left eye shutter to control the opened state or the closed state of the right eye shutter and the left eye shutter, based on the signal indicating a displaying period of the right eye image and the left eye image of 3D picture, and a lamp drive section that supplies AC current having peak overlapping with a period when the right eye shutter of the glasses is in the opened state and peak overlapping with a period when the left eye shutter of the glasses is in the opened state to the lamp, based on the signal.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Inventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA, Keiji FUKUHARA
  • Patent number: 8960911
    Abstract: A projector includes a lamp that emits projection light to project 3D picture, in which a right eye image and a left eye image are represented in a time division manner, to an object, a synchronization signal transmission section which transmits shutter synchronization signal to glasses having a right eye shutter and a left eye shutter to control the opened state or the closed state of the right eye shutter and the left eye shutter, based on the signal indicating a displaying period of the right eye image and the left eye image of 3D picture, and a lamp drive section that supplies AC current having peak overlapping with a period when the right eye shutter of the glasses is in the opened state and peak overlapping with a period when the left eye shutter of the glasses is in the opened state to the lamp, based on the signal.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 24, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Hirosada Horiguchi, Hiroshi Yoshimoto, Tadashi Yamada, Keiji Fukuhara
  • Patent number: 8654047
    Abstract: An electro-optic device includes an electro-optic panel that includes a pixel region having a plurality of pixels arranged at a plurality of intersections where a plurality of scanning lines and a plurality of data lines cross each other, a polarity reverser that reverses, at a first frequency, a polarity of a video signal supplied to the plurality of pixels, a light source that emits light onto the pixel region, a pulse driver that pulse-drives the light source at a second frequency, and a setter that sets the first frequency and the second frequency so that a difference value between each of a plurality of first frequency components of the first frequency and each of a plurality of second frequency components of the second frequency is greater than a predetermined threshold value.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: February 18, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Hirosada Horiguchi
  • Patent number: 8562148
    Abstract: A control device that controls a video signal to be input to a display device and controls the luminance of a light source that causes light to be incident on the display device includes: a light source luminance control section that controls the luminance of the light source by means of a light source luminance control signal; a storage section that stores relationships between light source luminance control signals and video correction amounts; a video correction signal generating section that generates, on the basis of the video correction amount that is stored in the storage section and corresponds to the generated light source luminance control signal, a video correction signal that is used to correct the video signal; and a video signal correcting section that corrects the video signal by means of the video correction signal.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: October 22, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Hirosada Horiguchi, Hiroshi Yoshimoto, Tadashi Yamada
  • Publication number: 20130077052
    Abstract: A projector includes a lamp that emits projection light to project 3D picture, in which a right eye image and a left eye image are represented in a time division manner, to an object, a synchronization signal transmission section which transmits shutter synchronization signal to glasses having a right eye shutter and a left eye shutter to control the opened state or the closed state of the right eye shutter and the left eye shutter, based on the signal indicating a displaying period of the right eye image and the left eye image of 3D picture, and a lamp drive section that supplies AC current having peak overlapping with a period when the right eye shutter of the glasses is in the opened state and peak overlapping with a period when the left eye shutter of the glasses is in the opened state to the lamp, based on the signal.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 28, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA, Keiji FUKUHARA
  • Publication number: 20130044297
    Abstract: A projector which includes a light source, liquid crystal light valves, a dimming mechanism, an illumination optical system, a control circuit which determines an input light amount which is caused to be input to the liquid crystal light valve on the basis of an input image signal, outputs an output image signal which is decompressed according to the input light amount, and generates a first control signal which designates a first dimming rate of a high pressure mercury lamp and a second control signal which designates a second dimming rate of the dimming mechanism based on the input light amount, an illumination driving circuit which drives the light source on the basis of the first control signal, and a douser driving circuit which drives the douser on the basis of the second control signal.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 21, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA
  • Publication number: 20120033057
    Abstract: An electro-optic device includes: an electro-optic panel displaying a display image with illumination light emitted from an illumination device; a display control circuit controlling the electro-optic panel to display a right-eye image during a right display period and display a left-eye image during a left display period; a glasses control circuit controlling a right-eye shutter of stereoscopic vision glasses so as to maintain an open state during the right display period, controlling a left-eye shutter of stereoscopic vision glasses so as to maintain an open state during the left display period, and controlling both the right-eye shutter and the left-eye shutter so as to maintain a close state during a blocking period; and an illumination control circuit controlling the illumination device to vary an intensity of the illumination light in a pulsed shape during the blocking period.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 9, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hirosada HORIGUCHI
  • Publication number: 20110096233
    Abstract: A control device that controls a video signal to be input to a display device and controls the luminance of a light source that causes light to be incident on the display device includes: a light source luminance control section that controls the luminance of the light source by means of a light source luminance control signal; a storage section that stores relationships between light source luminance control signals and video correction amounts; a video correction signal generating section that generates, on the basis of the video correction amount that is stored in the storage section and corresponds to the generated light source luminance control signal, a video correction signal that is used to correct the video signal; and a video signal correcting section that corrects the video signal by means of the video correction signal.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 28, 2011
    Applicant: Seiko Epson Corporation
    Inventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA
  • Publication number: 20090231250
    Abstract: An electro-optic device includes an electro-optic panel that includes a pixel region having a plurality of pixels arranged at a plurality of intersections where a plurality of scanning lines and a plurality of data lines cross each other, a polarity reverser that reverses, at a first frequency, a polarity of a video signal supplied to the plurality of pixels, a light source that emits light onto the pixel region, a pulse driver that pulse-drives the light source at a second frequency, and a setter that sets the first frequency and the second frequency so that a difference value between each of a plurality of first frequency components of the first frequency and each of a plurality of second frequency components of the second frequency is greater than a predetermined threshold value.
    Type: Application
    Filed: February 20, 2009
    Publication date: September 17, 2009
    Applicant: Seiko Epson Corporation
    Inventor: Hirosada Horiguchi
  • Publication number: 20080231765
    Abstract: The disclosure is directed to an electro-optical device. In one example, a plurality of pixels each has a pixel pitch and a light transmissible region. A light shielding unit is configured to restrict the light transmissible region of each of the pixels to a region a size of 1/M (M being an integer) of the pixel pitch in each of a horizontal direction and a vertical direction for each of the pixels.
    Type: Application
    Filed: March 15, 2008
    Publication date: September 25, 2008
    Applicant: Seiko Epson Corporation
    Inventor: Hirosada Horiguchi
  • Patent number: 6005644
    Abstract: A projection display for preventing reflected light beams produced during optical modulation or light compositing from reinjecting into the modulating liquid crystal panel, as well as to convert projected light or light impinged into a light compositing system into a linearly polarized light beam, thereby projecting high-contrast, high-intensity images with minimal reflection errors.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: December 21, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Shuji Aruga, Hirosada Horiguchi
  • Patent number: 5142393
    Abstract: An electro-optical liquid crystal display device includes at least one of the optically anisotropic layers has three main refractive indices N1o, N2o and N3e. The axis corresponding to N3e is in the direction approximately parallel to the surfaces of the substrates of the liquid crystal cell and N3e is smaller than N1o and N2o. The device may include a homogenous or twisted liquid crystall cell with the cell and anisotropic layer sandwiched between two polarizers.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: August 25, 1992
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Okumura, Motoyuki Toki, Hirosada Horiguchi