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).

  • Patent number: 8272062
    Abstract: 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: Grant
    Filed: August 5, 2009
    Date of Patent: September 18, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Kazuho Miki, Daisuke Matsubara, Hiroshi Kurihara, Satoshi Nagano, Narihiro Oomoto
  • Publication number: 20120154461
    Abstract: 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: Application
    Filed: February 24, 2012
    Publication date: June 21, 2012
    Inventors: Shigeyuki Nishitani, Takeshi Maeda, Kazuyoshi Kawabe, Hiroshi Kurihara, Tetsuo Takagi, Toshiaki Ohashi
  • Publication number: 20120127753
    Abstract: 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: Application
    Filed: November 28, 2011
    Publication date: May 24, 2012
    Applicants: Hitachi Displays, Ltd.
    Inventor: Hiroshi Kurihara
  • Patent number: 8184084
    Abstract: 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: Grant
    Filed: August 26, 2010
    Date of Patent: May 22, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Tsutomu Furuhashi, Takeshi Maeda, Atsuhiro Higa, Hisayuki Ohhara, Hiroshi Kurihara, Naruhiko Kasai
  • Patent number: 8130230
    Abstract: 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: Grant
    Filed: April 17, 2008
    Date of Patent: March 6, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takuya Eriguchi, Norio Mamba, Hiroshi Kurihara
  • Patent number: 8125427
    Abstract: 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: Grant
    Filed: October 3, 2008
    Date of Patent: February 28, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Shigeyuki Nishitani, Takeshi Maeda, Kazuyoshi Kawabe, Hiroshi Kurihara, Tetsuo Takagi, Toshiaki Ohashi
  • Patent number: 8102762
    Abstract: 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: Grant
    Filed: June 5, 2009
    Date of Patent: January 24, 2012
    Assignee: NEC Corporation
    Inventors: Hiroki Oyama, Tomoki Murakami, Hiroshi Kurihara, Yoshiki Shioji, Atsushi Hashiguchi, Keisuke Daikohara, Yasuhiko Sakaguchi
  • Patent number: 8085231
    Abstract: 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: Grant
    Filed: December 23, 2008
    Date of Patent: December 27, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Hiroshi Kurihara, Tatsuo Makishima
  • Patent number: 8085360
    Abstract: 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: Grant
    Filed: August 5, 2011
    Date of Patent: December 27, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventor: Hiroshi Kurihara
  • Publication number: 20110292681
    Abstract: 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: Application
    Filed: August 5, 2011
    Publication date: December 1, 2011
    Inventor: Hiroshi Kurihara
  • Publication number: 20110118468
    Abstract: 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: Application
    Filed: July 13, 2009
    Publication date: May 19, 2011
    Inventors: Yasuhito Kato, Shizuo Shimano, Akinori Morikawa, Hiroki Hotta, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa, Hiroshi Kurihara
  • Publication number: 20110102708
    Abstract: 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: Application
    Filed: September 23, 2010
    Publication date: May 5, 2011
    Inventor: Hiroshi Kurihara
  • Patent number: 7880006
    Abstract: 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: Grant
    Filed: August 3, 2005
    Date of Patent: February 1, 2011
    Assignees: 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
  • Publication number: 20100321423
    Abstract: 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: Application
    Filed: August 26, 2010
    Publication date: December 23, 2010
    Inventors: Tsutomu Furuhashi, Takeshi Maeda, Atsuhiro Higa, Hisayuki Ohhara, Hiroshi Kurihara, Naruhiko Kasai
  • Patent number: 7852358
    Abstract: 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: Grant
    Filed: December 12, 2006
    Date of Patent: December 14, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Yasuyuki Kudo, Atsuhiro Higa, Yoshikazu Yokota, Hiroshi Kurihara, Kazunari Kurokawa
  • Patent number: 7817223
    Abstract: 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: Grant
    Filed: October 26, 2007
    Date of Patent: October 19, 2010
    Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.
    Inventors: Sakae Watanabe, Hiroshi Kurihara, Seiichi Nishiyama
  • Patent number: 7808469
    Abstract: 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: Grant
    Filed: March 5, 2007
    Date of Patent: October 5, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Tsutomu Furuhashi, Takeshi Maeda, Atsuhiro Higa, Hisayuki Ohhara, Hiroshi Kurihara, Naruhiko Kasai
  • Patent number: 7768594
    Abstract: To shorten the distance from a point light source to an effective light emitting area and reduce the size of a back light.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: August 3, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventor: Hiroshi Kurihara
  • Patent number: 7764607
    Abstract: 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: Grant
    Filed: April 24, 2007
    Date of Patent: July 27, 2010
    Assignee: NEC Corporation
    Inventors: Tadayuki Ohno, Tomoki Murakami, Hiroshi Kurihara
  • Publication number: 20100050274
    Abstract: 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: Application
    Filed: August 5, 2009
    Publication date: February 25, 2010
    Applicant: HITACHI, LTD.
    Inventors: Kazuho MIKI, Daisuke MATSUBARA, Hiroshi KURIHARA, Satoshi NAGANO, Narihiro OOMOTO