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: 9344713Abstract: 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: GrantFiled: January 15, 2015Date of Patent: May 17, 2016Assignee: SEIKO EPSON CORPORATIONInventors: Hirosada Horiguchi, Hiroshi Yoshimoto, Tadashi Yamada, Keiji Fukuhara
-
Publication number: 20150124221Abstract: 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: ApplicationFiled: January 15, 2015Publication date: May 7, 2015Inventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA, Keiji FUKUHARA
-
Patent number: 8960911Abstract: 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: GrantFiled: September 14, 2012Date of Patent: February 24, 2015Assignee: Seiko Epson CorporationInventors: Hirosada Horiguchi, Hiroshi Yoshimoto, Tadashi Yamada, Keiji Fukuhara
-
Patent number: 8654047Abstract: 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: GrantFiled: February 20, 2009Date of Patent: February 18, 2014Assignee: Seiko Epson CorporationInventor: Hirosada Horiguchi
-
Patent number: 8562148Abstract: 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: GrantFiled: October 14, 2010Date of Patent: October 22, 2013Assignee: Seiko Epson CorporationInventors: Hirosada Horiguchi, Hiroshi Yoshimoto, Tadashi Yamada
-
Publication number: 20130077052Abstract: 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: ApplicationFiled: September 14, 2012Publication date: March 28, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA, Keiji FUKUHARA
-
Publication number: 20130044297Abstract: 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: ApplicationFiled: August 17, 2012Publication date: February 21, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA
-
Publication number: 20120033057Abstract: 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: ApplicationFiled: August 8, 2011Publication date: February 9, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Hirosada HORIGUCHI
-
Publication number: 20110096233Abstract: 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: ApplicationFiled: October 14, 2010Publication date: April 28, 2011Applicant: Seiko Epson CorporationInventors: Hirosada HORIGUCHI, Hiroshi YOSHIMOTO, Tadashi YAMADA
-
Publication number: 20090231250Abstract: 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: ApplicationFiled: February 20, 2009Publication date: September 17, 2009Applicant: Seiko Epson CorporationInventor: Hirosada Horiguchi
-
Publication number: 20080231765Abstract: 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: ApplicationFiled: March 15, 2008Publication date: September 25, 2008Applicant: Seiko Epson CorporationInventor: Hirosada Horiguchi
-
Patent number: 6005644Abstract: 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: GrantFiled: March 5, 1996Date of Patent: December 21, 1999Assignee: Seiko Epson CorporationInventors: Shuji Aruga, Hirosada Horiguchi
-
Patent number: 5142393Abstract: 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: GrantFiled: January 19, 1990Date of Patent: August 25, 1992Assignee: Seiko Epson CorporationInventors: Osamu Okumura, Motoyuki Toki, Hirosada Horiguchi