Patents by Inventor Kengo Takahama
Kengo Takahama 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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Publication number: 20140132561Abstract: The touch sensor system (1p) includes: a touch panel (202) having a two-dimensional region (212) made up of a hand placing region (213) and a remainder region (214); a hand placing region processing section (203) for carrying out a process related to the hand placing region in accordance with a hand placing region touch signal corresponding to a touch to the hand placing region (213); and a drawing input processing section (214) for carrying out a drawing input process in accordance with a remainder region touch signal corresponding to a touch to the remainder region (214).Type: ApplicationFiled: June 4, 2012Publication date: May 15, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Masayuki Miyamoto, Shinichi Yoshida, Manabu Yumoto, Kengo Takahama
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Publication number: 20140055353Abstract: A mounting section (2) for a user to mount on his/her head includes an infrared light irradiation section (5) that irradiates an object to be detected (21) with a predetermined pattern of infrared light and an infrared light detection section (6) that detects the infrared light reflected by the object to be detected (21). The infrared light irradiation section (5) and the infrared light detection section (6) are placed at a predetermined distance from each other. The three-dimensional coordinates of the object to be detected (21) are computed from a predetermined pattern of reflection from the object to be detected (21) as obtained by the infrared light detection section (6).Type: ApplicationFiled: April 23, 2012Publication date: February 27, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Kengo Takahama
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Publication number: 20130342801Abstract: The liquid crystal display device (1) includes (i) a plurality of pixels arranged in a matrix manner for carrying out display, (ii) pixel electrodes (20) each of which has a comb-teeth shaped region, (iii) common electrodes (24) which face the respective pixel electrodes (20) via an insulating layer and each of which has a plate-like shape, (iv) a plurality of CSY lines (14), and (v) a plurality of CSX lines (16) which perpendicularly intersect with the plurality of CSY lines (14). Each of the common electrodes (24) is connected with any of the plurality of CSY lines (14) or with any of the plurality of CSX lines (16).Type: ApplicationFiled: February 27, 2012Publication date: December 26, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Hiroshi Hamada, Kengo Takahama, Shinichi Miyazaki
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Publication number: 20130321343Abstract: A touch panel system includes a touch panel having sense lines, and drive lines which intersect the sense lines and form capacitance with the sense lines, a touch panel controller for processing signals of the sense lines, and a drive line driving circuit for driving the drive lines in parallel. The touch panel controller includes a subtracting section for finding differences in signals between the sense lines adjacent to each other, a decoding section for calculating a distribution of differences between the capacitances by calculating an inner product of code sequences for driving the drive lines in parallel and difference output sequences which correspond to the code sequences, a touch detecting section for obtaining touch information based on the distribution of differences between the capacitances calculated by the decoding section, and a region setting section for setting an effective region in the touch panel based on the touch information.Type: ApplicationFiled: August 20, 2012Publication date: December 5, 2013Inventors: Masayuki MIYAMOTO, Shinichi Yoshida, Akira Nishioka, Manabu Yumoto, Kengo Takahama
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Publication number: 20130321348Abstract: An ultrasonic detector (8) included in a pen (3) detects ultrasonic waves which (i) are emitted from respective plurality of ultrasonic emitters (5a, 5b) and (ii) are transmitted to the pen (3) via an ultrasonic transmission sheet (2) and a writing medium (6) while a tip of the pen (3) is in contact with the writing medium (6). A pen tablet device (i) carries out a calculation to find a correlation between each of signals based on the respective ultrasonic waves detected by the ultrasonic detector (8) and a corresponding one of independent pseudo-random signals to thereby find a delay time for a corresponding one of the plurality of ultrasonic emitters (5a, 5b) and (ii) finds the coordinates of the tip of the pen (3) from the delay time.Type: ApplicationFiled: February 21, 2012Publication date: December 5, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Kengo Takahama
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Publication number: 20130321341Abstract: A coordinate input device of the present invention includes: an M-sequence generator (12); a drive electrode driving circuit (13); and a receiving electrode selecting circuit (14) which receives a value corresponding to a coupling capacitance, an inputted coordinate position being detected in accordance with the value received by the receiving electrode selecting circuit (14), a receiving electrode group being divided into two blocks, and a first detecting section (15) and a second detecting section (16) being provided so as to correspond to the respective two blocks.Type: ApplicationFiled: February 15, 2012Publication date: December 5, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Kengo Takahama
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Publication number: 20130271426Abstract: Provided is a touch panel system (1) capable of reliably removing a wide variety of noises. The touch panel system (1) includes a main sensor (31) which detects a touch operation, a sub sensor (32) which does not detect a touch operation but detects a noise component, and a subtracting section (41) which subtracts, from an output signal of the main sensor (31), an output signal of the sub sensor (32). The subtracting section (41) performs a subtracting operation to remove a noise component from the output signal of the main sensor (31), thereby extracting a signal derived from the touch operation itself.Type: ApplicationFiled: July 12, 2011Publication date: October 17, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Manabu Yumoto, Masayuki Miyamoto, Shinichi Yoshida, Kengo Takahama
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Patent number: 8350829Abstract: An input pen (60) of the present invention is an input pen used for performing an input to a touch-panel-integrated liquid crystal display device (100) (display device). The liquid crystal display device (100) includes a plurality of photosensitive elements (30) that senses light transmitted through a panel surface. The photosensitive elements (30) detect a position of input by sensing an image on a surface of a display panel. The input pen (60) includes a retroreflective element (61) at its tip that is to be in contact with the display panel. The retroreflective element (61) is made up of a spherical glass (62) (spherical transparent member) and an elastic reflective element (63). In this way, it is possible to provide an input pen which is to be used with a touch-panel-integrated display device and which makes it possible to perform a more accurate position detection.Type: GrantFiled: November 4, 2008Date of Patent: January 8, 2013Assignee: Sharp Kabushiki KaishaInventors: Shinichi Miyazaki, Masakazu Wada, Kengo Takahama, Toshiaki Nakagawa
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Patent number: 8350973Abstract: A liquid crystal display device (100) of the present invention includes: a liquid crystal panel (20) including: an active matrix substrate (21); a counter substrate (22); and a liquid crystal layer (23) provided between the active matrix substrate (21) and the counter substrate (22); and a backlight (10) illuminating the liquid crystal panel. The liquid crystal display device (100) has an area sensor function for detecting an external input position, and further includes a reflectance changing section (50) that reduces a reflectance of light from the backlight (10) in response to application of pressure on a panel surface (100a). The reflectance changing section (50) is configured so that in a state where no pressure is applied on the panel surface (100a), an air layer (50c) is formed between two elastic films (50a and 50b) whereas in a state where pressure is applied on the panel surface (100a), the two elastic films (50a and 50b) contact each other.Type: GrantFiled: April 17, 2009Date of Patent: January 8, 2013Assignee: Sharp Kabushiki KaishaInventors: Shinichi Miyazaki, Norikazu Hohshi, Masakazu Wada, Kengo Takahama, Toshiaki Nakagawa, Kohji Yabuta, Masayuki Hata
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Publication number: 20120206415Abstract: In order to simultaneously carry out, at a smaller sensor density, (i) detection of color information (recognition of a color) of visible light which enters a detection target surface and (ii) detection of an input position of the visible light, a liquid-crystal panel (20) included in a liquid-crystal display device of the present invention has an area sensor function of detecting color information and an input position of visible light by sensing an input image of the visible light on a panel surface. The liquid-crystal panel (20) (position detecting section) includes (i) a yellow sensor (31Y) including a light sensor element (30) which senses an intensity of green light and red light from among three primary color lights and (ii) a cyan sensor (31C) including a light sensor element (30) which senses an intensity of blue light and green light from among the three primary color lights.Type: ApplicationFiled: June 1, 2010Publication date: August 16, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Shinichi Miyazaki, Kengo Takahama
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Publication number: 20120170072Abstract: A liquid crystal display device 1 has a liquid crystal display panel 11 that includes an optical sensor element 4 and a protection plate 21 that protects the liquid crystal display panel 11. The protection plate 21 and the liquid crystal display panel 11 are arranged with an air layer 25 therebetween. Between the liquid crystal display panel 11 and the protection plate 21, lens arrays 23 and 24 that form an image with light emitted from the liquid crystal display panel 11 as an erect image on a surface of the protection plate 21 and that forms, when an original 30 is placed on the protection plate 21, an image with reflected light of light irradiated onto the original 30 as an erect image on the optical sensor element 4 are provided. Thus, a display device having an image reading function that can protect the display panel and that can suppress lowering of resolution of a read out image and lowering of the display quality of a displayed image is provided.Type: ApplicationFiled: April 27, 2010Publication date: July 5, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Shinichi Miyazaki, Kengo Takahama
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Publication number: 20110291993Abstract: A touch panel includes: an infrared light transmitting material through which infrared light is transmitted and which has a surface as a touch surface (20) touched by a detection subject; area sensors (3) including photo sensor elements (4) below a touch region, which is touched by the detection subject, of the infrared light transmitting material; and infrared light sources (1) provided outside the touch region, the infrared light sources (1) emitting infrared light along said surface of the infrared light transmitting material such that an entire circumference of the detection subject touching the touch surface (20) is irradiated with the infrared light, the touch panel detecting a position touched by the detection subject so that the photo sensor element (4) receives, among infrared light emitted by the infrared light sources (1) along said surface, infrared light reflected by the detection subject and transmitted through the infrared light transmitting material.Type: ApplicationFiled: March 12, 2010Publication date: December 1, 2011Inventors: Shinichi Miyazaki, Hiroshi Hamada, Mikihiro Noma, Kengo Takahama, Masakazu Wada, Norikazu Hohshi
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Publication number: 20110279414Abstract: A liquid crystal display device of the present invention includes a liquid crystal panel (20) having an area sensor function of detecting the position of an input from an outside source by detecting an image on a panel surface. The liquid crystal panel (20) (position detecting section), provided with visible light sensors (31A) each containing light sensor elements (30) that detect the intensity of received visible light and infrared light sensors (31B) each containing light sensor elements (30) that detect the intensity of received infrared light, which detects an input position by the visible light sensors (31A) and the infrared light sensors (31B) separately detecting an image on the detector surface. The liquid crystal display device further includes a backlight (light-emitting section) for irradiating the liquid crystal panel (20) with light containing infrared light.Type: ApplicationFiled: August 28, 2009Publication date: November 17, 2011Inventors: Mikihiro Noma, Shinichi Miyazaki, Kengo Takahama, Yoshiharu Yoshimoto, Keisuke Iwasaki
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Publication number: 20110273404Abstract: A liquid crystal panel (20) provided in a liquid crystal display device of the present invention includes a plurality of optical sensor elements (30) each for detecting an intensity of light received, and has an area sensor function to detect an external input position by causing each of the optical sensor elements (30) to detect an image on the panel surface. The liquid crystal panel (20) includes the optical sensor elements (30) constituting an area sensor and a temperature compensating sensor (50) for carrying out temperature compensation of each of these optical sensor elements (30).Type: ApplicationFiled: August 28, 2009Publication date: November 10, 2011Inventors: Mikihiro Noma, Kengo Takahama, Shinichi Miyazaki, Yoichiro Yahata, Yoshiharu Yoshimoto, Kazuhiro Maeda
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Publication number: 20110261300Abstract: An area sensor and an area-sensor-equipped display device are provided which can clearly discriminate between the presence and absence of a finger or input pen touching a panel surface. A liquid crystal display device (100) of the present invention includes: a liquid crystal panel (position detecting section) (20), provided with a plurality of light sensor elements (30) that detects the intensity of received light, which detects the position of an input through detection of an image on a panel surface (detector surface) (100a) by the light sensor elements (30); and a reflectance changing section (45), provided on that side of the liquid crystal panel (20) which faces the panel surface (100a), which effects a change in reflectance of light when pressure is applied to the panel surface (100a).Type: ApplicationFiled: July 28, 2009Publication date: October 27, 2011Inventors: Shinichi Miyazaki, Masakazu Wada, Norikazu Hohshi, Kengo Takahama, Toshiaki Nakagawa
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Publication number: 20110242440Abstract: A liquid crystal display device of the present invention includes a liquid crystal panel (20) having an area sensor function of detecting the position of an input from an outside source by detecting an image on a panel surface. The liquid crystal panel (20) has a plurality of light sensor elements (30) that detect the intensity of received light. The liquid crystal panel (20) is provided with: a light intensity sensor section (50), constituted by those ones of the light sensor elements (30) which are disposed in an outermost peripheral part of a display region (20a) of the liquid crystal panel (20), which detects the intensity of light in an environment where the device is placed; and visible light sensors (31A) and infrared light sensors (31B), constituted by those ones of the light sensor elements (30) other than those constituting the light intensity sensor section (50), which detect the position of an input from an outside source by the light sensor elements detecting an image on the panel surface.Type: ApplicationFiled: August 28, 2009Publication date: October 6, 2011Inventors: Mikihiro Noma, Shinichi Miyazaki, Kengo Takahama, Yoichiro Yahata, Yoshiharu Yoshimoto, Kazuhiro Maeda
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Publication number: 20110157097Abstract: A coordinate sensor (10) includes at least two line sensors (1) that are disposed in x-axis and y-axis directions, and right-angle prisms (2) each of which changes a light path of light that has passed through an image display region of a liquid crystal panel (20). Each of the line sensors (1) is disposed outside the image display region and has a light-receiving surface (1a) parallel to an image display surface of the liquid crystal panel (20). The right angle prisms (2) cause light which travels in the x-axis and y-axis directions and which has passed through the image display region to be guided to the light-receiving surfaces (1a) of the line sensors (1). The coordinate sensor (10) receives the light which has thus passed through the image display region of the liquid crystal panel (20) so as to detect a coordinate, on the image display region, that is indicated by an object to be detected such as a finger.Type: ApplicationFiled: May 29, 2009Publication date: June 30, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Hiroshi Hamada, Shinichi Miyazaki, Mikihiro Noma, Kengo Takahama, Masakazu Wada, Norikazu Hohshi, Kohichi Oda, Yukio Mizuno
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Publication number: 20110128467Abstract: A liquid crystal display device (100) of the present invention includes: a liquid crystal panel (20) including: an active matrix substrate (21); a counter substrate (22); and a liquid crystal layer (23) provided between the active matrix substrate (21) and the counter substrate (22); and a backlight (10) illuminating the liquid crystal panel. The liquid crystal display device (100) has an area sensor function for detecting an external input position, and further includes a reflectance changing section (50) that reduces a reflectance of light from the backlight (10) in response to application of pressure on a panel surface (100a). The reflectance changing section (50) is configured so that in a state where no pressure is applied on the panel surface (100a), an air layer (50c) is formed between two elastic films (50a and 50b) whereas in a state where pressure is applied on the panel surface (100a), the two elastic films (50a and 50b) contact each other.Type: ApplicationFiled: April 17, 2009Publication date: June 2, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Shinichi Miyazaki, Norikazu Hohshi, Masakazu Wada, Kengo Takahama, Toshiaki Nakagawa, Kohji Yabuta, Masayuki Hata
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Publication number: 20110102705Abstract: A liquid crystal display device (100) (display device) of the present invention includes a liquid crystal panel (20) including a liquid crystal layer (23) between an active matrix substrate (21) and a counter substrate (22). The liquid crystal display device (100) has an area sensor function that detects an input position of an external input by detecting an image on a surface (100a) (target surface for detection) of the liquid crystal panel (20). The liquid crystal display device (100) includes: the liquid crystal panel (20) (position detecting section) including a plurality of optical sensor elements (30) detecting an intensity of light received, the liquid crystal panel (20) detecting the input position by causing the plurality of optical sensor elements to detect the image on the surface of the liquid crystal panel; and a reflectance changing section (45) changing a reflectance of light in response to application of pressure onto the surface (100a) of the liquid crystal panel (20).Type: ApplicationFiled: January 22, 2009Publication date: May 5, 2011Inventors: Shinichi Miyazaki, Norikazu Hohshi, Masakazu Wada, Kengo Takahama, Toshiaki Nakagawa
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Publication number: 20100283764Abstract: An input pen (60) of the present invention is an input pen used for performing an input to a touch-panel-integrated liquid crystal display device (100) (display device). The liquid crystal display device (100) includes a plurality of photosensitive elements (30) that senses light transmitted through a panel surface. The photosensitive elements (30) detect a position of input by sensing an image on a surface of a display panel. The input pen (60) includes a retroreflective element (61) at its tip that is to be in contact with the display panel. The retroreflective element (61) is made up of a spherical glass (62) (spherical transparent member) and an elastic reflective element (63). In this way, it is possible to provide an input pen which is to be used with a touch-panel-integrated display device and which makes it possible to perform a more accurate position detection.Type: ApplicationFiled: November 4, 2008Publication date: November 11, 2010Inventors: Shinichi Miyazaki, Masakazu Wada, Kengo Takahama, Toshiaki Nakagawa