Patents by Inventor Toshihiko Matsuzawa
Toshihiko Matsuzawa 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: 9217915Abstract: A projection-type video display apparatus comprising: a transmission-type screen; a video projection unit configured to project an image displayed on a video display surface as an image light; a projection optic system configured to enlarge and project the image light projected from said video projection unit on a rear surface of said transmission-type screen; and a plane mirror, provided in a part of said projection optic system, configured to reflect the image light from said video projection unit, thereby to project it on said transmission-type screen, wherein said transmission-type screen, said video projection unit and said projection optic system are mounted on a base; said video projection unit builds up an oblique projection optic system; and said transmission-type screen and said plane mirror are disposed on said base, being perpendicularly fixed, independently, in parallel with each other, and on the rear surface of said transmission-type screen is attached a foldable back cover, detachably, so as tType: GrantFiled: September 30, 2010Date of Patent: December 22, 2015Assignee: Hitachi Maxell, Ltd.Inventors: Koji Hirata, Toshihiko Matsuzawa, Tadashi Sato
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Publication number: 20140009694Abstract: Projection-type video display apparatus, for base of transportation/conveyance if a display screen thereof is large-sized, and reducing energy necessary for the transportation and/or carbon dioxide discharging, thereby being friendly to the global environment. In the projection-type video display apparatus, for enlargedly projecting an image light, which is projected from a video projection unit 35, for projecting an image displayed on a video display screen as the image light, on a rear surface of a transmission-type screen, the video projection unit builds up an oblique projection optic system, and further a transmission-type screen 1 and a plane mirror 29 are disposed on a cabinet portion āCā including a side plate 17, being perpendicularly fixed, independently, in parallel with each other, and on the rear surface of the transmission-type screen are attached foldable back covers 30 and 31, detachably, so as to cover a rear surface of the plane mirror.Type: ApplicationFiled: September 30, 2010Publication date: January 9, 2014Applicant: Hitachi Consumer Electronics Co., Ltd.Inventors: Koji Hirata, Toshihiko Matsuzawa, Tadashi Sato
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Patent number: 8465157Abstract: A projection type image display apparatus for projecting optical fluxes from a light source onto a projection plane so as to display an image, provided with a reflection mirror arranged in such a manner that the reflection mirror interrupts an optical path of the projection light in the direct projection mode when the reflection mode is set and reflects the projection light to the backside of the projection type image display apparatus, and when the reflection mode is set, the projection type image display apparatus is tilted to the backside. The projection type image display apparatus is further provided with an adjustment leg arranged in a front portion of a bottom plane of the projection type image display apparatus and extended by a predetermined leg length, and thereby the projection type image display apparatus is tilted to the backside.Type: GrantFiled: May 17, 2010Date of Patent: June 18, 2013Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Koshu Ichikawa, Hiroyuki Inoue, Toshihiko Matsuzawa
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Patent number: 8384995Abstract: A rear-type projection board apparatus (rear-surface projection-type video display apparatus), of new structure, having no necessity of a housing, being superior in portability, cheaply producible, comprises a transmission-type screen, being disposed within an interior space, under a condition of exposing both surfaces thereof in the space, and for transmitting a visual light projected onto a rear surface therethrough, so as to display it on a video display surface on a front surface, and a video projection apparatus (projector), being disposed at a predetermined position on a rear surface side of the transmission-type screen, and for projecting the visual light from a rear surface of the transmission-type screen, enlargedly, wherein the transmission-type screen has a Fresnel lens having Fresnel lens surfaces, covering over an entire light receiving surface for receiving the visual light, which is enlargedly projected from the video projection apparatus, whereby guiding the visual light received from the videType: GrantFiled: April 21, 2011Date of Patent: February 26, 2013Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Koji Hirata, Hidehiro Ikeda, Toshihiko Matsuzawa, Tadashi Sato
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Publication number: 20120249489Abstract: There is provided an electronic pen that reduces reflected waves of supersonic waves from a screen, with a simple structure and there is realized a projector system that improves the position detection precision of the electronic pen. The electronic pen comprises a longitudinal axis-shaped housing body having a pen tip at a tip end portion thereof, a supersonic wave transmitting portion provided inside the housing body relative to the pen tip for generating supersonic waves, an infrared ray transmitting portion arranged adjacent to the supersonic wave transmitting portion for generating an infrared ray, and a supersonic wave guide for reflecting components, toward a pen tip side, among the supersonic waves generated from the supersonic wave transmitting portion.Type: ApplicationFiled: March 26, 2012Publication date: October 4, 2012Inventors: Shinji Onodera, Toshihiko Matsuzawa, Nobutaka Hotta
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Publication number: 20110298993Abstract: A rear-type projection board apparatus (rear-surface projection-type video display apparatus), of new structure, having no necessity of a housing, being superior in portability, cheaply producible, comprises a transmission-type screen 130, being disposed within an interior space, under a condition of exposing both surfaces thereof in the space, and for transmitting a visual light projected onto a rear surface therethrough, so as to display it on a video display surface on a front surface, and a video projection apparatus (projector) 102, being disposed at a predetermined position on a rear surface side of the transmission-type screen, and for projecting the visual light from a rear surface of the transmission-type screen, enlargedly, wherein the transmission-type screen has a Fresnel lens 166 (136) having Fresnel lens surfaces, covering over an entire light receiving surface for receiving the visual light, which is enlargedly projected from the video projection apparatus, whereby guiding the visual light receType: ApplicationFiled: April 21, 2011Publication date: December 8, 2011Inventors: Koji HIRATA, Hidehiro Ikeda, Toshihiko Matsuzawa, Tadashi Sato
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Patent number: 7876553Abstract: According to the present invention, the amount of usage of a heat conductive member for fixing a self-luminous flat display panel to a metallic chassis member disposed at the back of the display panel is reduced in the thickness direction as well as in the surface direction. The invention further provides a technique for efficiently radiating heat from the display panel, suppressing cost increase. To this end, in the invention, the heat conductive member is a hot-melt adhesive having adhesion at room temperature and filled with a heat conduction imparting agent, and the display panel is fixed to the chassis member by a plurality of heat conducting sections of the heat conductive member formed discretely ranging from 0.3 to 0.8 mm in thickness.Type: GrantFiled: December 19, 2006Date of Patent: January 25, 2011Assignee: Hitachi, Ltd.Inventors: Mitsuo Okimoto, Mikio Shiraishi, Takaaki Matono, Yoshie Kodera, Toshihiko Matsuzawa, Sadayuki Nishimura, Nobuo Masuoka
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Publication number: 20100321643Abstract: A projection type image display apparatus for projecting optical fluxes from a light source onto a projection plane so as to display an image, provided with a reflection mirror arranged in such a manner that the reflection mirror interrupts an optical path of the projection light in the direct projection mode when the reflection mode is set and reflects the projection light to the backside of the projection type image display apparatus, and when the reflection mode is set, the projection type image display apparatus is tilted to the backside. The projection type image display apparatus is further provided with an adjustment leg arranged in a front portion of a bottom plane of the projection type image display apparatus and extended by a predetermined leg length, and thereby the projection type image display apparatus is tilted to the backside.Type: ApplicationFiled: May 17, 2010Publication date: December 23, 2010Inventors: Koshu Ichikawa, Hiroyuki Inoue, Toshihiko Matsuzawa
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Patent number: 7750590Abstract: A display apparatus includes a base, a display screen part supported on the base turnably, a driving part for turning the display screen part in accordance with an inputted control signal, a turning prevention mechanism for preventing turning of the display screen part, a judgment part for judging on the basis of the inputted control signal whether the display apparatus is operated or not, and a controller for producing a signal for operating the turning prevention mechanism to prevent turning of the display screen part when it is judged that there is no operation to the display screen part and producing a signal for releasing operation of the turning prevention mechanism when it is judged that there is operation to the display screen part.Type: GrantFiled: June 1, 2006Date of Patent: July 6, 2010Assignee: Hitachi, Ltd.Inventors: Masanori Takaji, Tatsuya Nakazawa, Yutaka Yamada, Toshihiko Matsuzawa, Satoshi Ishizuka
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Patent number: 7649737Abstract: The invention provides a technique enabling an image of high quality to be displayed while decreasing an effect of an outside light proceeding toward a back surface of PDP through a through hole for mounting an electric circuit on a chassis. A flat panel display of the invention includes a display panel, a metallic chassis having a through hole and joints for connecting the back surface of the display panel and the chassis to each other. The joints are on the back surface of the display panel distant from each other in a predetermined direction, and one of the joints is arranged at a position corresponding to the through hole of the chassis.Type: GrantFiled: March 16, 2007Date of Patent: January 19, 2010Assignee: Hitachi, Ltd.Inventors: Toshihiko Matsuzawa, Mitsuo Okimoto, Sadayuki Nishimura, Yoshie Kodera, Nobuo Masuoka
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Patent number: 7436140Abstract: A self-supporting stand for a thin display device is to be controlled so that the display device faces in a preset screen direction in a one-touch manner. A function of constantly recognizing the screen direction of the display device and detecting its own direction by detecting a resistance value of a resistance volume such as a variable resistor installed in an electric screen direction changing mechanism, and a control unit which reproduces a preset screen direction no matter in which direction the screen faces currently, are combined with each other.Type: GrantFiled: June 20, 2006Date of Patent: October 14, 2008Assignee: Hitachi, Ltd.Inventors: Masanori Takaji, Tatsuya Nakazawa, Yutaka Yamada, Toshihiko Matsuzawa, Satoshi Ishizuka
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Publication number: 20070258017Abstract: The invention provides a technique enabling an image of high quality to be displayed while decreasing an effect of an outside light proceeding toward a back surface of PDP through a through hole for mounting an electric circuit on a chassis. A flat panel display of the invention includes a display panel, a metallic chassis having a through hole and joints for connecting the back surface of the display panel and the chassis to each other. The joints are on the back surface of the display panel distant from each other in a predetermined direction, and one of the joints is arranged at a position corresponding to the through hole of the chassis.Type: ApplicationFiled: March 16, 2007Publication date: November 8, 2007Inventors: Toshihiko Matsuzawa, Mitsuo Okimoto, Sadayuki Nishimura, Yoshie Kodera, Nobuo Masuoka
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Publication number: 20070153458Abstract: According to the present invention, the amount of usage of a heat conductive member for fixing a self-luminous flat display panel to a metallic chassis member disposed at the back of the display panel is reduced in the thickness direction as well as in the surface direction. The invention further provides a technique for efficiently radiating heat from the display panel, suppressing cost increase. To this end, in the invention, the heat conductive member is a hot-melt adhesive having adhesion at room temperature and filled with a heat conduction imparting agent, and the display panel is fixed to the chassis member by a plurality of heat conducting sections of the heat conductive member formed discretely ranging from 0.3 to 0.8 mm in thickness.Type: ApplicationFiled: December 19, 2006Publication date: July 5, 2007Inventors: Mitsuo Okimoto, Mikio Shiraishi, Takaaki Matono, Yoshie Kodera, Toshihiko Matsuzawa, Sadayuki Nishimura, Nobuo Masuoka
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Publication number: 20060290687Abstract: A display apparatus includes a base, a display screen part supported on the base turnably, a driving part for turning the display screen part in accordance with an inputted control signal, a turning prevention mechanism for preventing turning of the display screen part, a judgment part for judging on the basis of the inputted control signal whether the display apparatus is operated or not, and a controller for producing a signal for operating the turning prevention mechanism to prevent turning of the display screen part when it is judged that there is no operation to the display screen part and producing a signal for releasing operation of the turning prevention mechanism when it is judged that there is operation to the display screen part.Type: ApplicationFiled: June 1, 2006Publication date: December 28, 2006Inventors: Masanori Takaji, Tatsuya Nakazawa, Yutaka Yamada, Toshihiko Matsuzawa, Satoshi Ishizuka
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Publication number: 20060284034Abstract: A self-supporting stand for a thin display device is to be controlled so that the display device faces in a preset screen direction in a one-touch manner. A function of constantly recognizing the screen direction of the display device and detecting its own direction by detecting a resistance value of a resistance volume such as a variable resistor installed in an electric screen direction changing mechanism, and a control unit which reproduces a preset screen direction no matter in which direction the screen faces currently, are combined with each other.Type: ApplicationFiled: June 20, 2006Publication date: December 21, 2006Inventors: Masanori Takaji, Tatsuya Nakazawa, Yutaka Yamada, Toshihiko Matsuzawa, Satoshi Ishizuka
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Patent number: 5838381Abstract: The present invention aims at providing an image display apparatus capable of displaying both a television signal and an image signal supplied from a personal computer with a high picture quality on a high definition display unit having 1024 by 768 pixels. In order to achieve this object, an image display apparatus according to the present invention includes an NTSC-VGA conversion circuit for converting a television signal to a signal having 640 by 480 pixels and corresponding to the non-interlacing VGA standard, a switch unit for selecting and outputting either the signal outputted from the NTSC-VGA conversion circuit and an inputted image signal from a personal computer, and a VGA-XGA conversion circuit for converting a number of pixels of a signal outputted from the switch unit to a number of pixels 1024 by 768 substantially equivalent to the number of the display unit.Type: GrantFiled: December 20, 1996Date of Patent: November 17, 1998Assignee: Hitachi, Ltd.Inventors: Yasuhiro Kasahara, Takaaki Matono, Koichi Sudo, Makoto Kitamura, Yasuhiro Tomita, Kouichi Sugimoto, Toshihiko Matsuzawa, Fumiyoshi Akiyama
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Patent number: 4192793Abstract: A stabilizer for chlorine-containing resins, comprising calcium hydroxide coated with a calcium salt of an organic acid, and a process for producing the same wherein calcium hydroxide and an organic acid are reacted at a molar ratio of 1 mole of calcium hydroxide: not more than 2 moles of organic acid in the presence of a medium and a surface active agent, while heating and stirring, to convert the outer surface of the calcium hydroxide to a calcium salt of the organic acid.Type: GrantFiled: December 5, 1978Date of Patent: March 11, 1980Assignees: Sekisio Kagaku Kogyo Kabushiki Kaisha, Shinagawa Chemical Industry Co., Ltd.Inventors: Katsuhiko Tanioka, Toshihiko Matsuzawa, Noboru Iida, Naoji Makino, Itirow Hayasaka
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Patent number: 4158075Abstract: A stabilizer for chlorine-containing resins, comprising calcium hydroxide coated with a calcium salt of an organic acid, and a process for producing the same wherein calcium hydroxide and an organic acid are reacted at a molar ratio of 1 mole of calcium hydroxide: not more than 2 moles of organic acid in the presence of a medium and a surface active agent, while heating and stirring, to convert the outer surface of the calcium hydroxide to a calcium salt of the organic acid.Type: GrantFiled: February 17, 1978Date of Patent: June 12, 1979Assignees: Sekisui Kagaku Kogyo Kabushiki Kaisha, Shinagawa Chemical Industry Co., Ltd.Inventors: Katsuhiko Tanioka, Toshihiko Matsuzawa, Noboru Iida, Naoji Makino, Itirow Hayasaka
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Patent number: D650822Type: GrantFiled: September 23, 2010Date of Patent: December 20, 2011Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Yoshihiro Iwama, Atsushi Ishibashi, Yuta Kawaguchi, Koji Hirata, Toshihiko Matsuzawa, Tadashi Sato