Patents by Inventor Naosato Taniguchi
Naosato Taniguchi 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).
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Patent number: 7898713Abstract: At least one exemplary embodiment is directed to an image display apparatus which displays an image on a surface to be scanned and includes a light source configured to emit a light beam modulated on the basis of image information, a scanner configured to scan the surface to be scanned with the light beam emitted from the light source, a light receiver configured to receive the light beam that is incident upon a particular area of the surface to be scanned when the surface to be scanned is scanned with the light beam, a first determiner configured to determine whether or not an output signal from the light receiver are output at a predetermined time interval, and a controller configured to control driving of the light source on the basis of a determination signal from the determiner.Type: GrantFiled: May 19, 2006Date of Patent: March 1, 2011Assignee: Canon Kabushiki KaishaInventor: Naosato Taniguchi
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Patent number: 7605775Abstract: Disclosed is a displaying optical system including: a scanning member for deflecting a light emitted from a light source; a scanned surface on which an image is formed by the light deflected by the scanning member; an optical surface provided at a position common to a first optical path through which a light reflected by the scanned surface travels and a second optical path through which a light from the scanning member to the scanned surface travels; and a phase plate being provided at the position common to the first optical path and the second optical path. The optical surface, in accordance with a polarization direction, transmits the light traveling through one of the first optical path and the second optical path and reflects the light traveling through the other optical path.Type: GrantFiled: December 20, 2005Date of Patent: October 20, 2009Assignee: Canon Kabushiki KaishaInventors: Shuichi Kobayashi, Akira Yamamoto, Naosato Taniguchi
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Patent number: 7576315Abstract: A scanning type image display apparatus includes a synchronization control circuit that enables a scanning unit to synchronize the forward paths and backward paths. The scanning type image display apparatus comprises a light source, scanning unit for scanning the light beam in two dimensional directions, a scanning optical system for forming an image of the light source on a surface to be scanned, the last surface of the scanning optical system including a reflecting area that reflects an effective light beam for forming an image on the surface to be scanned and a light transmission portion provided outside the reflecting area, light beam detection unit for detecting a light beam transmitted through the light transmission portion, and a synchronization control circuit that controls light emitting timing of the light source based on a signal from the light beam detection means.Type: GrantFiled: February 24, 2006Date of Patent: August 18, 2009Assignee: Canon Kabushiki KaishaInventors: Naosato Taniguchi, Shuichi Kobayashi, Akira Yamamoto
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Patent number: 7573523Abstract: An imaging apparatus including an electronic viewfinder comprising a light source, a scanning unit for scanning light emitted from the light source. The electronic viewfinder forms a two-dimensional image on a predetermined surface by synchronously modulating the light emitted from the light source with the operation of the scanning unit. The imaging apparatus further includes a controller capable of independently controlling the timing of turning on and off the light source and the timing of turning on and off the scanning unit. The controller controls the light source and the scanning unit in response to the on and off state of the power of the imaging apparatus so that when the light source is off the scanning unit is on.Type: GrantFiled: January 27, 2005Date of Patent: August 11, 2009Assignee: Canon Kabushiki KaishaInventor: Naosato Taniguchi
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Patent number: 7401928Abstract: A display optical system includes a light-source unit, a first optical unit which collects a light beam from the light-source unit, a scanning member which scans the light beam from the first optical unit, and a second optical unit which focuses the light beam scanned by the scanning member on about a scanning surface. An optical axis, defined by an optical path along which a light ray travels from the center of the scanning member to the center of the scanning surface via the second optical unit, intersects itself. In addition, the second optical unit includes two reflective mirrors having positive optical powers.Type: GrantFiled: June 2, 2005Date of Patent: July 22, 2008Assignee: Canon Kabushiki KaishaInventors: Akira Yamamoto, Naosato Taniguchi, Shuichi Kobayashi
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Publication number: 20060291027Abstract: At least one exemplary embodiment is directed to an image display apparatus which displays an image on a surface to be scanned and includes a light source configured to emit a light beam modulated on the basis of image information, a scanner configured to scan the surface to be scanned with the light beam emitted from the light source, a light receiver configured to receive the light beam that is incident upon a particular area of the surface to be scanned when the surface to be scanned is scanned with the light beam, a first determiner configured to determine whether or not an output signal from the light receiver are output at a predetermined time interval, and a controller configured to control driving of the light source on the basis of a determination signal from the determiner.Type: ApplicationFiled: May 19, 2006Publication date: December 28, 2006Applicant: Canon Kabushiki KaishaInventor: Naosato Taniguchi
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Patent number: 7148862Abstract: The present invention discloses a stereoscopic image display apparatus for which an image display unit can be freely selected, and in which crosstalk is suppressed even if a transmissive image display unit is used. The stereoscopic image display apparatus according to the present invention includes an image display unit in which pixel groups including pixels that display images corresponding to observation positions respectively are arranged cyclically; a lenticular array which substantially condenses light rays from the respective pixels at the predetermined observation positions and which is constituted by a plurality of horizontal lens lines arranged vertically, each of which is formed by a plurality of cylindrical lenses horizontally arranged at a predetermined cycle. And the apparatus includes a limiting member that limits light rays so that rays from a predetermined horizontal pixel lines may reach only the horizontal lens line having the same horizontal positions of cylindrical lenses.Type: GrantFiled: May 16, 2003Date of Patent: December 12, 2006Assignee: Canon Kabushiki KaishaInventors: Hideki Morishima, Naosato Taniguchi, Toshiyuki Sudo, Hiroshi Nishihara
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Patent number: 7106274Abstract: A stereoscopic image display apparatus comprising an image display unit that displays combined images formed by combining three different pixels groups in a horizontal direction, which correspond to three different viewpoint images, respectively; a mask member with a plurality of aperture portions that guides light from each pixel group to a corresponding viewpoint; a lenticular lens array arranged between the image display unit and the mask member; and a switching control circuit that switches arrangement of the aperture portions in the mask member in synchronization with switching of the combined images.Type: GrantFiled: May 14, 2003Date of Patent: September 12, 2006Assignee: Canon Kabushiki KaishaInventors: Hiroshi Nishihara, Naosato Taniguchi, Toshiyuki Sudo, Hideki Morishima
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Publication number: 20060192094Abstract: In a scanning type image display apparatus that display an image by scanning a light beam emitted from a light source, synchronization of forward paths and backward paths of scanning means is achieved. The scanning type image display apparatus comprises a light source for emitting a light beam that is modulated based on image information, scanning means for scanning the light beam in two dimensional directions, a scanning optical system for forming an image of the light source on a surface to be scanned, the last surface of the scanning optical system including a reflecting area that reflects an effective light beam for forming an image on the surface to be scanned and a light transmission portion provided outside the reflecting area, light beam detection means for detecting a light beam transmitted through the light transmission portion, and a synchronization control circuit that controls light emitting timing of the light source based on a signal from the light beam detection means.Type: ApplicationFiled: February 24, 2006Publication date: August 31, 2006Inventors: Naosato Taniguchi, Shuichi Kobayashi, Akira Yamamoto
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Publication number: 20060131492Abstract: Disclosed is a displaying optical system including: a scanning member for deflecting a light emitted from a light source; a scanned surface on which an image is formed by the light deflected by the scanning member; an optical surface provided at a position common to a first optical path through which a light reflected by the scanned surface travels and a second optical path through which a light from the scanning member to the scanned surface travels; and a phase plate being provided at the position common to the first optical path and the second optical path. The optical surface, in accordance with a polarization direction, transmits the light traveling through one of the first optical path and the second optical path and reflects the light traveling through the other optical path.Type: ApplicationFiled: December 20, 2005Publication date: June 22, 2006Inventors: Shuichi Kobayashi, Akira Yamamoto, Naosato Taniguchi
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Patent number: 7064895Abstract: Parallax images corresponding to a plurality of different view points are each divided into predetermined stripe images, a synthetic parallax image is synthesized from the stripe images, and display light, from stripe images corresponding to one view point of the synthetic parallax image on the image display element displaying the synthetic parallax image, is guided to a mask member having a mask pattern with predetermined openings and shields by a second optical system placed in front of the image display element. The display light passing through the openings of the mask member is condensed to a position corresponding to the view point on an observation surface a predetermined distance apart, by a first optical system, whereby an observer is permitted to stereoscopically observe image information displayed on the image display element.Type: GrantFiled: January 31, 2001Date of Patent: June 20, 2006Assignee: Canon Kabushiki KaishaInventors: Hideki Morishima, Hiroshi Nishihara, Naosato Taniguchi, Tomoshi Takikawa, Yoshihiro Saito, Kazutaka Inoguchi
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Publication number: 20060007058Abstract: A display optical system includes a light-source unit, a first optical unit which collects a light beam from the light-source unit, a scanning member which scans the light beam from the first optical unit, and a second optical unit which focuses the light beam scanned by the scanning member on about a scanning surface. An optical axis, defined by an optical path along which a light ray travels from the center of the scanning member to the center of the scanning surface via the second optical unit, intersects itself. In addition, the second optical unit includes two reflective mirrors having positive optical powers.Type: ApplicationFiled: June 2, 2005Publication date: January 12, 2006Applicant: Canon Kabushiki KaishaInventors: Akira Yamamoto, Naosato Taniguchi, Shuichi Kobayashi
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Patent number: 6940646Abstract: It is an object of the present invention to provide a stereoscopic image displaying method and a stereoscopic image displaying apparatus using the same, which are capable of excellently observing a stereoscopic image.Type: GrantFiled: April 18, 2001Date of Patent: September 6, 2005Assignee: Canon Kabushiki KaishaInventors: Naosato Taniguchi, Kazutaka Inoguchi, Hiroshi Nishihara, Tomoshi Takikawa, Yoshihiro Saito, Hideki Morishima
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Publication number: 20050168613Abstract: An imaging apparatus including an electronic viewfinder comprising a light source, a scanning unit for scanning light emitted from the light source. The electronic viewfinder forms a two-dimensional image on a predetermined surface by synchronously modulating the light emitted from the light source with the operation of the scanning unit. The imaging apparatus further includes a controller capable of independently controlling the timing of turning on and off the light source and the timing of turning on and off the scanning unit. The controller controls the light source and the scanning unit in response to the on and off state of the power of the imaging apparatus so that when the light source is off the scanning unit is on.Type: ApplicationFiled: January 27, 2005Publication date: August 4, 2005Applicant: Canon Kabushiki KaishaInventor: Naosato Taniguchi
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Publication number: 20040165263Abstract: A stereoscopic image display apparatus is disclosed with which the discontinuities in the parallax images viewed from any viewing region can be alleviated, and which is capable of performing high-quality stereoscopic display. The stereoscopic image display apparatus includes a display device synthetically displaying a plurality of parallax images by different pixels, and an optical separating member in which a plurality of state-selective regions are arranged, which have properties of selectively transmitting light with different states. The optical separating member directs, of the light from the pixels, the light transmitted through the state-selective regions to a different viewing region for each parallax image.Type: ApplicationFiled: February 11, 2004Publication date: August 26, 2004Inventors: Toshiyuki Sudo, Naosato Taniguchi, Hideki Morishim, Hiroshi Nishihara
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Patent number: 6757422Abstract: This invention has as its object to provide a viewpoint detection apparatus and method, which can assure high-speed processing, high precision, and high tracking performance with a simple arrangement while suppressing adverse influences on the human body, and a stereoscopic image display apparatus using the same. The viewpoint position detection apparatus of this invention has an image sensing unit (1) and a viewpoint detection unit (2). The image sensing unit has a visible image sensing section (11) and infrared image sensing section (12). A pupil position detection processing section (24) detects the pupil position from an infrared image, and a template generation section (23) generates templates for a visible image using the pupil position obtained from the infrared image. A pattern matching discrimination section (22) executes pattern matching of a visible image.Type: GrantFiled: September 14, 1999Date of Patent: June 29, 2004Assignee: Canon Kabushiki KaishaInventors: Masahiro Suzuki, Hiroyuki Yamamoto, Tomoshi Takikawa, Hideki Morishima, Naosato Taniguchi
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Publication number: 20030214459Abstract: A stereoscopic image display apparatus that has low degradations of image quality and can perform high-resolution display is discribed. The stereoscopic image display apparatus includes an image display unit displaying a combined image formed by combining a plurality of viewpoint images. In addition, this includes a mask member having a plurality of aperture portions to pass only rays of light, directing to a viewpoint corresponding to a viewpoint image that each pixel groups displays. Moreover, this also includes a switching control circuit that makes the image display unit display a plurality of combined images, where arrangement of the pixel groups are mutually different, with switching the plurality of combined images, and that switches arrangement aperture portions in the mask member with synchronizing with the switching of these combined images.Type: ApplicationFiled: May 14, 2003Publication date: November 20, 2003Inventors: Hiroshi Nishihara, Naosato Taniguchi, Toshiyuki Sudo, Hideki Morishima
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Publication number: 20030214497Abstract: The present invention discloses a stereoscopic image display apparatus for which an image display unit can be freely selected, and in which crosstalk is suppressed even if a transmissive image display unit is used. The stereoscopic image display apparatus according to the present invention includes an image display unit in which pixel groups including pixels that display images corresponding to observation positions respectively are arranged cyclically; a lenticular array which substantially condenses light rays from the respective pixels at the predetermined observation positions and which is constituted by a plurality of horizontal lens lines arranged vertically, each of which is formed by a plurality of cylindrical lenses horizontally arranged at a predetermined cycle. And the apparatus includes a limiting member that limits light rays so that rays from a predetermined horizontal pixel lines may reach only the horizontal lens line having the same horizontal positions of cylindrical lenses.Type: ApplicationFiled: May 16, 2003Publication date: November 20, 2003Inventors: Hideki Morishima, Naosato Taniguchi, Toshiyuki Sudo, Hiroshi Nishihara
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Patent number: 6522312Abstract: There is disclosed a mixed reality presentation apparatus which generates and displays a three-dimensional virtual image on a see-through display device so as to allow a plurality of players to play a multi-player game in a mixed reality environment. The apparatus has a CCD camera for detecting the mallet positions of the plurality of players, and a sensor for detecting the view point position of each player in the environment of the multi-player game. The apparatus generates a three-dimensional virtual image that represents a game result of the multi-player game that has progressed in accordance with changes in mallet position detected by the CCD camera and is viewed from the view point position of each player detected by the sensor, and outputs the generated image to the corresponding see-through display device. The apparatus determines the motion of each player by detecting infrared rays output from the corresponding mallet on the basis of an image captured by the CCD camera.Type: GrantFiled: March 23, 1998Date of Patent: February 18, 2003Assignee: Canon Kabushiki KaishaInventors: Toshikazu Ohshima, Kiyohide Sato, Hiroyuki Yamamoto, Masakazu Fujiki, Naosato Taniguchi, Akihiro Katayama
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Publication number: 20030012425Abstract: This invention has as its object to provide a viewpoint detection apparatus and method, which can assure high-speed processing, high precision, and high tracking performance with a simple arrangement while suppressing adverse influences on the human body, and a stereoscopic image display apparatus using the same. The viewpoint position detection apparatus of this invention has an image sensing unit (1) and a viewpoint detection unit (2). The image sensing unit has a visible image sensing section (11) and infrared image sensing section (12). A pupil position detection processing section (24) detects the pupil position from an infrared image, and a template generation section (23) generates templates for a visible image using the pupil position obtained from the infrared image. A pattern matching discrimination section (22) executes pattern matching of a visible image.Type: ApplicationFiled: September 11, 2002Publication date: January 16, 2003Applicant: CANON KABUSHIKI KAISHAInventors: Masahiro Suzuki, Hiroyuki Yamamoto, Tomoshi Takikawa, Hideki Morishima, Naosato Taniguchi