Patents by Inventor Seiji Murata
Seiji Murata 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: 10942436Abstract: The reflection surface of a DMD is divided into a first area and a second area, causing the first area to display images while appropriately controlling the on and off states of the micromirrors within the second area on the basis of a prescribed control logic according to the on and off states of the micromirrors within the first area. Further, the DMD off-state light created in the first and second areas is caused to recurse to the DMD via a prescribed recycle optical system for the DMD off-state light, and only the second area in the reflection surface is intensively irradiated along a prescribed irradiation direction, thereby efficiently converting the DMD off-state light to the effective projection light.Type: GrantFiled: October 23, 2017Date of Patent: March 9, 2021Assignee: HITACHI-LG DATA STORAGE, INC.Inventors: Kunikazu Oonishi, Satoshi Ouchi, Seiji Murata, Hiroshi Ogasawara
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Publication number: 20210041699Abstract: Both uniformity of brightness and uniformity of color of the outside world are seen via a waveguide. A video image is reflected by a partial reflection surface inside the waveguide that includes an incident surface on which video image light is incident, first and second internal reflection surfaces that propagate the video image light incident from the incident surface while totally reflecting the video image light, and are substantially parallel to each other. A plurality of partial reflection surfaces that reflect a part of the video image light propagating by being totally reflected by the first and second internal reflection surfaces, output the part of the video image light as output light from the first internal reflection surface to the outside of the waveguide, and transmit the part of the video image light being incident, and are disposed substantially parallel to each other inside the waveguide.Type: ApplicationFiled: September 11, 2018Publication date: February 11, 2021Inventors: Ryuji UKAI, Tomoto KAWAMURA, Satoshi OUCHI, Yoshiho SEO, Seiji MURATA
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Publication number: 20200391107Abstract: A game machine for development is connected to a host computer, reads out a file requested by a game program under development from a storage device, and executes the game program. In the game machine for development, a file confirmation section confirms whether or not the file requested by the game program is stored in the storage device, a file request section requests the host computer to transmit the file in a case where the file is not stored, and a storage processor acquires the file from the host computer and stores the file in the storage device.Type: ApplicationFiled: June 8, 2020Publication date: December 17, 2020Applicant: Sony Interactive Entertainment Inc.Inventors: Naoto Okino, Seiji Murata, Kenichi Matsuura, Minjie Zhu, Masaki Osawa, Peter Marshall, Matthew Bush
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Publication number: 20200285884Abstract: A luminance determining unit 14 determines a luminance distribution of an exterior circumstantial image in a line-of-sight direction of a driver 300, and a luminance changing unit 15 determines a bright region 301 of this luminance distribution. Further, the luminance changing unit 15 determines a luminance after the change in a peripheral region 302 of this bright region 301. A virtual-image creating unit 16A creates a virtual image based on the determined luminance, and a display processing unit 17 displays this virtual image on a display unit 200. In this manner, since a display system 1A displays the virtual image for use in increasing the luminance in periphery of the bright region 301, the feeling of the brightness for the driver 300 can be moderated, and therefore, the visual recognition can be improved. That is, the display system 1A can output the virtual image depending on the circumstances.Type: ApplicationFiled: September 22, 2017Publication date: September 10, 2020Inventors: Seiji MURATA, Hiromitsu MORI, Kenichi SHIMADA, Kazuyoshi YAMAZAKI, Mayumi NAGAYOSHI
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Publication number: 20200252602Abstract: A virtual image display device has a function of projecting a prescribed virtual image video within a visual field of a user and detects an actual visual recognition distance from the user to an object relating to a visually recognized object at which the user is gazing. A virtual image light generating unit has a function of generating a plurality of virtual image lights independent of each other and a virtual-image-light transmitting and projecting unit that has a function of transmitting and projecting the virtual image light to left and right eyes of the user through substantially the same optical path to allow a prescribed virtual image video to be visually recognized at a prescribed position within the visual field of the user. Additionally, a virtual-image visual recognition distance control unit that has a function of performing variable control of a visual recognition distance of a virtual image.Type: ApplicationFiled: October 30, 2018Publication date: August 6, 2020Inventors: Kunikazu OONISHI, Seiji MURATA
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Patent number: 10636130Abstract: An image processing device processes an image captured by at least one image-capturing device including a lens which has characteristics of including an inflection point of a change rate of an incidence angle per image height with respect to the incidence angle at a predetermined inflection point incidence angle. The image processing device includes a resolution adjustment unit that adjusts resolution of an inflection point correspondence image area corresponding to the predetermined inflection point incidence angle and resolution of at least one of an inside image area positioned more inside than the inflection point correspondence image area and an outside image area positioned outside of the inflection point correspondence image area.Type: GrantFiled: April 13, 2016Date of Patent: April 28, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Haruki Matono, Takeshi Nagasaki, Toshiyuki Aoki, Seiji Murata, Masayuki Takemura, Keiichi Betsui
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Publication number: 20200103740Abstract: The reflection surface of a DMD is divided into a first area and a second area, causing the first area to display images while appropriately controlling the on and off states of the micromirrors within the second area on the basis of a prescribed control logic according to the on and off states of the micromirrors within the first area. Further, the DMD off-state light created in the first and second areas is caused to recurse to the DMD via a prescribed recycle optical system for the DMD off-state light, and only the second area in the reflection surface is intensively irradiated along a prescribed irradiation direction, thereby efficiently converting the DMD off-state light to the effective projection light.Type: ApplicationFiled: October 23, 2017Publication date: April 2, 2020Inventors: Kunikazu OONISHI, Satoshi OUCHI, Seiji MURATA, Hiroshi OGASAWARA
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Publication number: 20200090375Abstract: A HUD apparatus that is an AR display apparatus mounted on an on-vehicle system includes: an image selection unit configured to input an image photographed by a camera, select and extract an area of an object from the image; a visibility judgment unit configured to judge visibility of a user with respect to the area of the object on a basis of an index value; an AR image generator unit configured to generate an AR image regarding the object by subjecting the area to image processing for improving the visibility on a basis of the visibility of the area of the object; and an AR display unit configured to superimpose and display the AR image onto a screen. The visibility judgment unit controls whether the AR image is to be displayed or not and content of the image processing to be changed in accordance with the visibility.Type: ApplicationFiled: March 17, 2017Publication date: March 19, 2020Inventors: Hiromitsu MORI, Seiji MURATA, Tomoto KAWAMURA
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Publication number: 20190379860Abstract: Provided is a video display device wearable on the head of a user, wherein the video display device includes a video display unit capable of switching two or more display methods, a control unit for indicating a display method to the video display unit, a first detection unit for detecting the motion of the head of a user, a second detection unit for detecting the motion of the point of view of the user, and a motion determination unit for determining the motion state of the device user by using the output from the first detection unit and the output from the second detection unit. The control unit indicates a change of display methods to the video display unit in accordance with the determination result of the motion determination unit.Type: ApplicationFiled: August 21, 2019Publication date: December 12, 2019Inventors: Takahiro MATSUDA, Satoshi OUCHI, Yoshiho SEO, Seiji MURATA
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Patent number: 10365490Abstract: A head-mounted display (101) includes: an imaging assembly (203) imaging scenery seen by a user to generate a source picture; a storage unit (202) storing color correction factors used for correcting brightness of each of a red, green and blue color components included in a picture; a correction picture generator (212) performing color correction processing for enhancing a color component with a relatively low color correction factor stored in the storage unit (202), of the red, green and blue color components forming the source picture, to generate a correction picture; a picture display assembly (207) displaying the correction picture in the field of view of the user under a condition where he/she is able to perceive the outside world; and a special picture processor (213) performing picture processing for overlaying the correction picture and the source picture on each other for display.Type: GrantFiled: May 19, 2015Date of Patent: July 30, 2019Assignee: Maxell, Ltd.Inventors: Shingo Hayashi, Satoshi Ouchi, Yoshiho Seo, Tomoto Kawamura, Seiji Murata, Takahiro Matsuda, Toshiteru Nakamura
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Patent number: 10281272Abstract: Provided is a technology which is suitable for both widening an image capture view angle and securing an angular resolution across the entire image capture range. In an imaging optical system, a rate of change of an image height per view angle, i.e. dy/d?, is greater than 0 at a maximum view angle ?max, a rate of change of a view angle per image height, i.e. D(?)=1/(dy(?)/d?), satisfies an expression D(?p)>{(D(?max)?D(0))/?max?}?p+D(0), with ?p which lies in a range of 0<?<?max, and it satisfies an expression 1.5<(y(?s)/?s)/{(y(?max)?y(?s))/(?max??s)}<3.0 with a switching view angle ?s of the rate of change D(?) of the view angle per image height.Type: GrantFiled: October 27, 2015Date of Patent: May 7, 2019Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Seiji Murata, Keiichi Betsui
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Publication number: 20190004408Abstract: An optical mixer efficiently homogenizes light flux emitted from a plurality of light sources emitting light having different wavelengths to provide a multi-wavelength homogeneous light source. The optical mixer has a columnar shape made of a transparent material, a length of the side surfaces is larger than an outermost diameter of a top surface or a bottom surface of the columnar shape, and a large number of scattering particles scattering light contained inside the optical mixer. The side surface of the optical mixer reflects light, and the top surface and the bottom surface thereof transmit light. Thereby, a function of mixing light incident from the top or bottom surface by the reflecting function of the side surface and the scattering function of the scattering particles is provided.Type: ApplicationFiled: February 2, 2017Publication date: January 3, 2019Inventors: Tomoto KAWAMURA, Toshiteru NAKAMURA, Seiji MURATA, Yoshiho SEO, Toshihiro KURODA, Yutaka KAWAKAMI, Daichi SAKAI, Toshiyuki TAKAIWA
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Patent number: 10078236Abstract: There are provided a dimmer that can solve practical problems including burn-in and easily change a transmittance to external light and a video display device using the same. A dimmer includes a stack of two or more light control layers that change a transmittance to incident light by controlling an applied voltage in the incident direction of the incident light. A video display device includes a video generator that generates picture light; a video projector that projects the picture light as a virtual image in the field of view of a user; the dimmer disposed on the opposite side of the projecting side of the video projector to the user for adjusting the light quantity of external light to be entered to a user's eye through the video projector; and a light controller that controls the dimmer suitable for the luminosity of external light detected at an external light detector.Type: GrantFiled: December 27, 2016Date of Patent: September 18, 2018Assignee: Hitachi-LG Data Storage, Inc.Inventors: Shingo Hayashi, Satoshi Ouchi, Yoshiho Seo, Tomoto Kawamura, Seiji Murata, Takahiro Matsuda, Toshiteru Nakamura
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Publication number: 20180203338Abstract: To provide an illumination device having high efficiency, an illumination method, a video projection apparatus using the same. In order to achieve the object, there is provided an illumination device configured to include a light source and a light condensing body which condenses light from the light source to be emitted, and the light condensing body includes an incidence surface of a light source side, an emission surface emitting light, and a side surface which is present between the incidence surface and the emission surface, the side surface is a curved surface of which a distance from a light axis in a direction orthogonal to the light emitting surface of the light source at the center of the light source becomes large from the incidence surface toward the emission surface and has a plurality of curved-surface-shapes of which shapes of the curved surfaces are different from each other.Type: ApplicationFiled: December 11, 2015Publication date: July 19, 2018Inventors: Tomoto KAWAMURA, Seiji MURATA, Ryuji UKAI, Toshiyuki TAKAIWA, Toshihiro KURODA, Daichi SAKAI, Yutaka KAWAKAMI, Toshiteru NAKAMURA
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Patent number: 10026158Abstract: The present invention addresses the problem of providing an imaging device that prevents mismatching in image matching for parallax calculation even if the sharpnesses of an end part and center part of a processing area differ. An imaging device 1 according to the present invention is provided with a means for equalizing the sharpnesses of the processing areas of a reference image and a comparison image.Type: GrantFiled: August 17, 2015Date of Patent: July 17, 2018Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Toshiyuki Aoki, Takeshi Shima, Tatsuhiko Monji, Hiroshi Kuroda, Keiichi Betsui, Seiji Murata
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Publication number: 20180184042Abstract: Provided is a video display device wearable on the head of a user, wherein the video display device includes a video display unit capable of switching two or more display methods, a control unit for indicating a display method to the video display unit, a first detection unit for detecting the motion of the head of a user, a second detection unit for detecting the motion of the point of view of the user, and a motion determination unit for determining the motion state of the device user by using the output from the first detection unit and the output from the second detection unit. The control unit indicates a change of display methods to the video display unit in accordance with the determination result of the motion determination unit.Type: ApplicationFiled: June 5, 2015Publication date: June 28, 2018Inventors: Takahiro MATSUDA, Satoshi OUCHI, Yoshiho SEO, Seiji MURATA
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Publication number: 20180150949Abstract: An image processing device processes an image captured by at least one image-capturing device including a lens which has characteristics of including an inflection point of a change rate of an incidence angle per image height with respect to the incidence angle at a predetermined inflection point incidence angle. The image processing device includes a resolution adjustment unit that adjusts resolution of an inflection point correspondence image area corresponding to the predetermined inflection point incidence angle and resolution of at least one of an inside image area positioned more inside than the inflection point correspondence image area and an outside image area positioned outside of the inflection point correspondence image area.Type: ApplicationFiled: April 13, 2016Publication date: May 31, 2018Inventors: Haruki MATONO, Takeshi NAGASAKI, Toshiyuki AOKI, Seiji MURATA, Masayuki TAKEMURA, Keiichi BETSUI
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Publication number: 20180129050Abstract: A head-mounted display (101) includes: an imaging assembly (203) imaging scenery seen by a user to generate a source picture; a storage unit (202) storing color correction factors used for correcting brightness of each of a red, green and blue color components included in a picture; a correction picture generator (212) performing color correction processing for enhancing a color component with a relatively low color correction factor stored in the storage unit (202), of the red, green and blue color components forming the source picture, to generate a correction picture; a picture display assembly (207) displaying the correction picture in the field of view of the user under a condition where he/she is able to perceive the outside world; and a special picture processor (213) performing picture processing for overlaying the correction picture and the source picture on each other for display.Type: ApplicationFiled: May 19, 2015Publication date: May 10, 2018Inventors: Shingo HAYASHI, Satoshi OUCHI, Yoshiho SEO, Tomoto KAWAMURA, Seiji MURATA, Takahiro MATSUDA, Toshiteru NAKAMURA
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Publication number: 20180017768Abstract: The imaging lens ensures the wide shooting view angle, and required angular resolution over the entire shooting range. The imaging lens includes at least a first lens and a second lens. The first lens has a first surface on which a principal light beam is made incidence, and a second surface from which the principal light beam is emitted. The second lens has a third surface on which the principal light beam emitted from the first lens is made incidence, and a fourth surface from which the principal light beam is emitted. Upon incidence of the principal light beam on the first lens, an incident angle ?n at which the principal light beam is made incidence on the first surface at right angles is allowed to be positioned other than a center of the first surface.Type: ApplicationFiled: January 18, 2016Publication date: January 18, 2018Applicant: HITACHI, LTD.Inventors: Keiichi BETSUI, Seiji MURATA
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Publication number: 20170314917Abstract: Provided is a technology which is suitable for both widening an image capture view angle and securing an angular resolution across the entire image capture range. In an imaging optical system, a rate of change of an image height per view angle, i.e. dy/d?, is greater than 0 at a maximum view angle ?max, a rate of change of a view angle per image height, i.e. D(?)=1/(dy(?)/d?), satisfies an expression D(?p)>{(D(?max)?D(0))/?max?}?p+D(0), with ?p which lies in a range of 0<?<?max, and it satisfies an expression 1.5<(y(?s)/?s)/{(y(?max)?y(?s))/(?max??s)}<3.0 with a switching view angle ?s of the rate of change D(?) of the view angle per image height.Type: ApplicationFiled: October 27, 2015Publication date: November 2, 2017Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Seiji MURATA, Keiichi BETSUI