Patents by Inventor Hiroshi Kurihara
Hiroshi Kurihara 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: 8272062Abstract: A content control system capable of controlling delivery destinations of user contents in respective groups, identifying each group through which each content is delivered, and delivering information/advertisements according to the attribution information of the content. In a content control server, group identifying information is set in each user content to be uploaded to or downloaded from a group memory area corresponding to a gateway ID from a terminal through a gateway having a plurality of its subordinate terminals. The information identifies each gateway through which each object content is delivered according to the gateway ID. The control system controls the delivery destination of each content according to the combination of the content delivery route and a table prepared in the content control server.Type: GrantFiled: August 5, 2009Date of Patent: September 18, 2012Assignee: Hitachi, Ltd.Inventors: Kazuho Miki, Daisuke Matsubara, Hiroshi Kurihara, Satoshi Nagano, Narihiro Oomoto
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Publication number: 20120154461Abstract: A liquid crystal display device for displaying video data includes a liquid crystal panel, a back light for illuminating the liquid crystal panel, an input video data characteristic detection section for detecting a luminance characteristic according to gradation of the inputted video data, and a back light control section for controlling an amount of light of the back light in accordance with the luminance characteristic.Type: ApplicationFiled: February 24, 2012Publication date: June 21, 2012Inventors: Shigeyuki Nishitani, Takeshi Maeda, Kazuyoshi Kawabe, Hiroshi Kurihara, Tetsuo Takagi, Toshiaki Ohashi
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Publication number: 20120127753Abstract: The present invention relates to a technique which makes a backlight used in a liquid crystal display device thin and light-weight. The present invention provides a liquid crystal display device which includes a display panel and a backlight arranged behind the display panel, wherein the backlight includes a film-like light guide member, a film-like light semi-transmissive member adhered to a first surface of the light guide member which faces the display panel in an opposed manner, a film-like reflective member adhered to a back surface of the light guide member opposite to the first surface, and a spot light source arranged at a position of the light guide member at which light is incident on the light guide member from the first surface or the back surface. A refractive index of the light semi-transmissive member is set smaller than a refractive index of the light guide member.Type: ApplicationFiled: November 28, 2011Publication date: May 24, 2012Applicants: Hitachi Displays, Ltd.Inventor: Hiroshi Kurihara
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Patent number: 8184084Abstract: There is provided a liquid crystal display control device which can display pictures in a magnification mode by using only a memory having a low-speed access and a low storage capacity. When a video signal has intermediate resolution or less, the enlargement processing is performed by a frame memory, a line memory and an enlargement processing control circuit. If the input operation and the output operation to and from the frame memory are synchronized with each other, it is sufficient for the frame memory to have a storage capacity of two lines. When the video signal has the same high resolution as a liquid crystal display panel, the video signal is output through a gate circuit to a display timing generating circuit, and it is displayed in a through mode. In this case, no processing is performed by the frame memory or the like.Type: GrantFiled: August 26, 2010Date of Patent: May 22, 2012Assignee: Hitachi, Ltd.Inventors: Tsutomu Furuhashi, Takeshi Maeda, Atsuhiro Higa, Hisayuki Ohhara, Hiroshi Kurihara, Naruhiko Kasai
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Patent number: 8130230Abstract: Disclosed herein is a display device in which input data is written to a RAM as current frame data and read from the RAM as preceding frame data. Then, the current frame data and the preceding frame data are added up in a correction circuit and the result is subjected to an overdriving processing. After this, the processed (over-driven) data is assumed as current frame corrected data, which is then written to the RAM. The written corrected data is read from the RAM and subjected to a double-speed driving processing.Type: GrantFiled: April 17, 2008Date of Patent: March 6, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Takuya Eriguchi, Norio Mamba, Hiroshi Kurihara
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Patent number: 8125427Abstract: A liquid crystal display device for displaying video data having a detection circuit for detecting a luminance distribution based on video data which is inputted, the luminance distribution being indicative of generation frequency of gradations in each of divided region which includes a plurality of gradations. The display device includes a determination circuit for determining at least one of a plurality of divided regions of higher generation frequency of gradation than that of other divided regions based on the luminance distribution, a correction circuit for correcting the video data so as to make a luminance characteristic of the at least one of the plurality of divided regions of higher generation frequency of gradation more abrupt than a luminance characteristic of the other divided regions, and a liquid crystal display panel for displaying the corrected video data. A width of the divided region is changeable.Type: GrantFiled: October 3, 2008Date of Patent: February 28, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Shigeyuki Nishitani, Takeshi Maeda, Kazuyoshi Kawabe, Hiroshi Kurihara, Tetsuo Takagi, Toshiaki Ohashi
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Patent number: 8102762Abstract: A system, which is connectable to a first apparatus capable of data communication using a data communication protocol via a network where each session is managed by a session management protocol, includes: a connecting section which, if ID about the first apparatus exists in a storing section when a start instruction is received from the first apparatus, registers ID about a session corresponding to the start instruction in association with the ID about the first apparatus, and establishes a path enabling data communication for the first apparatus in the network using the session management protocol; and a providing section which, upon receiving the ID about the session from a second apparatus, transmits confirmation information according to the result of confirmation about whether the ID about the first apparatus is in association with the ID about the session.Type: GrantFiled: June 5, 2009Date of Patent: January 24, 2012Assignee: NEC CorporationInventors: Hiroki Oyama, Tomoki Murakami, Hiroshi Kurihara, Yoshiki Shioji, Atsushi Hashiguchi, Keisuke Daikohara, Yasuhiko Sakaguchi
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Patent number: 8085231Abstract: In a display device which mounts drive circuits and a display control circuit on a substrate which constitutes a display panel, signal lines can be arranged on the substrate which constitutes the display panel without making the signal lines intersect each other. A plurality of drive circuits and a display control circuit are mounted on a peripheral portion of one long side of a first substrate. A printed circuit board is connected to one long side of the first substrate. Each drive circuit mounts, on a surface thereof facing the first substrate, a group of power source voltage input terminals to which a power source voltage is supplied, a group of gray-scale reference voltage input terminals to which a gray-scale reference voltage is supplied, and a group of gray-scale reference voltage output terminals which sends gray-scale reference voltages.Type: GrantFiled: December 23, 2008Date of Patent: December 27, 2011Assignee: Hitachi Displays, Ltd.Inventors: Hiroshi Kurihara, Tatsuo Makishima
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Patent number: 8085360Abstract: The present invention relates to a technique which can make a backlight used in a liquid crystal display device thin and light-weighted. The present invention provides a liquid crystal display device which includes a display panel and a backlight which is arranged behind the display panel, wherein the backlight includes a film-like light guide member, a film-like light semi-transmissive member which is adhered to a first surface of the light guide member which faces the display panel in an opposed manner, a film-like reflective member which is adhered to a back surface of the light guide member opposite to the first surface, and a spot light source which is arranged at a position of the light guide member at which light is incident on the light guide member from the first surface or the back surface, and a refractive index of the light semi-transmissive member is set smaller than a refractive index of the light guide member.Type: GrantFiled: August 5, 2011Date of Patent: December 27, 2011Assignee: Hitachi Displays, Ltd.Inventor: Hiroshi Kurihara
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Publication number: 20110292681Abstract: The present invention relates to a technique which can make a backlight used in a liquid crystal display device thin and light-weighted. The present invention provides a liquid crystal display device which includes a display panel and a backlight which is arranged behind the display panel, wherein the backlight includes a film-like light guide member, a film-like light semi-transmissive member which is adhered to a first surface of the light guide member which faces the display panel in an opposed manner, a film-like reflective member which is adhered to a back surface of the light guide member opposite to the first surface, and a spot light source which is arranged at a position of the light guide member at which light is incident on the light guide member from the first surface or the back surface, and a refractive index of the light semi-transmissive member is set smaller than a refractive index of the light guide member.Type: ApplicationFiled: August 5, 2011Publication date: December 1, 2011Inventor: Hiroshi Kurihara
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Publication number: 20110118468Abstract: Disclosed is a process for producing 6-aryloxyquinoline derivatives useful as insecticides or fungicides for agricultural and horticultural use. The process comprises a cyclization reaction step of reacting an anthranilic acid derivative represented by general formula (1) with a ketone in the presence of an acid to obtain a quinolone derivative and a condensation reaction step of reacting the quinolone derivative with a halogen compound or an acid anhydride to obtain a quinoline derivative.Type: ApplicationFiled: July 13, 2009Publication date: May 19, 2011Inventors: Yasuhito Kato, Shizuo Shimano, Akinori Morikawa, Hiroki Hotta, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa, Hiroshi Kurihara
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Publication number: 20110102708Abstract: The present invention relates to a technique which can make a backlight used in a liquid crystal display device thin and light-weighted. The present invention provides a liquid crystal display device which includes a display panel and a backlight which is arranged behind the display panel, wherein the backlight includes a film-like light guide member, a film-like light semi-transmissive member which is adhered to a first surface of the light guide member which faces the display panel in an opposed manner, a film-like reflective member which is adhered to a back surface of the light guide member opposite to the first surface, and a spot light source which is arranged at a position of the light guide member at which light is incident on the light guide member from the first surface or the back surface, and a refractive index of the light semi-transmissive member is set smaller than a refractive index of the light guide member.Type: ApplicationFiled: September 23, 2010Publication date: May 5, 2011Inventor: Hiroshi Kurihara
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Patent number: 7880006Abstract: Disclosed are compounds that have excellent insecticidal activity and are usable as agricultural and horticultural insecticides. Compounds represented by formula (I) or agriculturally and horticulturally acceptable acid addition salts thereof have excellent insecticidal activity and are usable as agricultural and horticultural insecticides.Type: GrantFiled: August 3, 2005Date of Patent: February 1, 2011Assignees: Meiji Seika Kaisha, Ltd., Nippon Kayaku Co., Ltd.Inventors: Kazumi Yamamoto, Ryo Horikoshi, Kazuhiko Oyama, Hiroshi Kurihara, Shizuo Shimano, Takaaki Miyake, Hiroki Hotta, Jun Iwabuchi
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Publication number: 20100321423Abstract: There is provided a liquid crystal display control device which can display pictures in a magnification mode by using only a memory having a low-speed access and a low storage capacity. When a video signal has intermediate resolution or less, the enlargement processing is performed by a frame memory, a line memory and an enlargement processing control circuit. If the input operation and the output operation to and from the frame memory are synchronized with each other, it is sufficient for the frame memory to have a storage capacity of two lines. When the video signal has the same high resolution as a liquid crystal display panel, the video signal is output through a gate circuit to a display timing generating circuit, and it is displayed in a through mode. In this case, no processing is performed by the frame memory or the like.Type: ApplicationFiled: August 26, 2010Publication date: December 23, 2010Inventors: Tsutomu Furuhashi, Takeshi Maeda, Atsuhiro Higa, Hisayuki Ohhara, Hiroshi Kurihara, Naruhiko Kasai
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Patent number: 7852358Abstract: A display device for displaying display data includes a display panel having pixel sections in a matrix form, a scanning circuit which selects a line of the pixel sections, a generation circuit which generates a plurality of gray-scale voltages based on a reference voltage, and a selection circuit which selects a gray-scale voltage corresponding to the display data from the plurality of gray-scale voltages, and outputs the gray-scale voltage thus selected to a pixel section of the display panel. The generation circuit one of increases and decreases a steady-state current of the generation circuit at a second period within one scanning period of the scanning circuit.Type: GrantFiled: December 12, 2006Date of Patent: December 14, 2010Assignee: Hitachi, Ltd.Inventors: Yasuyuki Kudo, Atsuhiro Higa, Yoshikazu Yokota, Hiroshi Kurihara, Kazunari Kurokawa
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Patent number: 7817223Abstract: The present invention provides a display device of high brightness which can eliminate brightness irregularities on a display surface while preventing the degradation of display quality attributed to an undesired electric field generated at the time of performing inverter driving of the cold cathode fluorescent lamps of a backlight. In a liquid crystal display device, a plurality of cold cathode fluorescent lamps of a backlight unit is arranged along a short axis of the display device. The cold cathode fluorescent lamp has a high-voltage electrode thereof connected to an inverter circuit and a ground electrode thereof connected to a ground. Further, the plurality of cold cathode fluorescent lamps arranged along the short axis have electrodes thereof arranged alternately between the high-voltage electrode and the ground electrode.Type: GrantFiled: October 26, 2007Date of Patent: October 19, 2010Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.Inventors: Sakae Watanabe, Hiroshi Kurihara, Seiichi Nishiyama
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Patent number: 7808469Abstract: There is provided a liquid crystal display control device which can display pictures in a magnification mode by using only a memory having low-speed access and a low storage capacity. When a video signal has intermediate resolution or less, the enlargement processing is performed by a frame memory, a line memory and an enlargement processing control circuit. If the input operation and the output operation to and from the frame memory are synchronized with each other, it is sufficient for the frame memory to have a storage capacity of two lines. When the video signal has the same high resolution as a liquid crystal display panel, the video signal is output through a gate circuit to a display timing generating circuit, and it is displayed in a through mode. In this case, no processing is performed by the frame memory or the like.Type: GrantFiled: March 5, 2007Date of Patent: October 5, 2010Assignee: Hitachi, Ltd.Inventors: Tsutomu Furuhashi, Takeshi Maeda, Atsuhiro Higa, Hisayuki Ohhara, Hiroshi Kurihara, Naruhiko Kasai
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Patent number: 7768594Abstract: To shorten the distance from a point light source to an effective light emitting area and reduce the size of a back light.Type: GrantFiled: June 4, 2007Date of Patent: August 3, 2010Assignee: Hitachi Displays, Ltd.Inventor: Hiroshi Kurihara
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Patent number: 7764607Abstract: A connection control method is achieved by receiving from a first terminal, a call request for a communication with a second terminal to notify the call request from a connection control server to an application server; and executing at least a program to receive the call request from the connection control server, to request a connection state data of the second terminal to a storage server in response to the received call request. A connection control instruction for the first and second terminals is issued to the connection control server when there is no connection state data of the second terminal in the storage server or the second terminal in a free state. A connection control between the first and second terminals is performed by the connection control server in response to the connection control instruction; and the connection state data of each of the first and second terminals is stored in the storage server when the connection state between the first and second terminals is changed.Type: GrantFiled: April 24, 2007Date of Patent: July 27, 2010Assignee: NEC CorporationInventors: Tadayuki Ohno, Tomoki Murakami, Hiroshi Kurihara
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Publication number: 20100050274Abstract: A content control system capable of controlling delivery destinations of user contents in respective groups, identifying each group through which each content is delivered, and delivering information/advertisements according to the attribution information of the content. In a content control server, group identifying information is set in each user content to be uploaded to or downloaded from a group memory area corresponding to a gateway ID from a terminal through a gateway having a plurality of its subordinate terminals. The information identifies each gateway through which each object content is delivered according to the gateway ID. The control system controls the delivery destination of each content according to the combination of the content delivery route and a table prepared in the content control server.Type: ApplicationFiled: August 5, 2009Publication date: February 25, 2010Applicant: HITACHI, LTD.Inventors: Kazuho MIKI, Daisuke MATSUBARA, Hiroshi KURIHARA, Satoshi NAGANO, Narihiro OOMOTO