Patents by Inventor Hideyuki Nakanishi

Hideyuki Nakanishi 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).

  • Publication number: 20160267866
    Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.
    Type: Application
    Filed: May 20, 2016
    Publication date: September 15, 2016
    Inventors: Yoshihisa OOISHI, Genshiro KAWACHI, Kazuo KITA, Toshikazu KOUDO, Hideyuki NAKANISHI
  • Publication number: 20160267869
    Abstract: A display device includes an image display area that includes pixels sectioned by scanning signal lines and video signal lines, first scanning connection lines connected to scanning signal lines, first thin film transistors, first selection signal lines, second thin film transistors, second selection signal lines, and a scanning signal drive circuit connected to the first scanning connection lines, the first selection signal lines, and the second selection signal lines, wherein the scanning signal drive circuit sequentially supplies a pulse signal to the first scanning connection lines in a selection period in which a gate-on voltage is applied to the one of the first selection signal lines, and the scanning signal drive circuit applies a gate-off voltage to the one of the second selection signal lines corresponding to the one of the first selection signal lines to which the gate-on voltage is applied.
    Type: Application
    Filed: May 19, 2016
    Publication date: September 15, 2016
    Inventors: Genshiro KAWACHI, Kazuo KITA, Yoshihisa OOISHI, Hideyuki NAKANISHI, Toshikazu KOUDO
  • Publication number: 20160232831
    Abstract: A display device including a display portion, a source driver, a gate driver and a controller, wherein the controller is configured to control the source driver and the gate driver based on a control mode for displaying the frame image on the display portion, in a basic control mode, the controller is configured to display a frame image on the display portion by causing the gate driver to progressively scan gate signal lines, in a low frequency control mode, the controller is configured to determine whether a regional signal is on in a specific region corresponding to specific gate signal lines, when it is determined that the regional signal is off, the controller is configured to display a sub-frame image on the display portion by causing the gate driver to perform interlaced scanning of the gate signal lines every K lines in the first frame frequency F1.
    Type: Application
    Filed: April 15, 2016
    Publication date: August 11, 2016
    Inventors: Hideyuki NAKANISHI, Junichi MARUYAMA, Toshikazu KOUDO
  • Patent number: 9407389
    Abstract: In an extensive distribution system with no delay guarantee network used as a relay network, an influence of a fluctuation of a communication delay time is avoided to conduct a high-precision time synchronization. First and second delay control devices installed in junctions between communication networks and a relay network, respectively, have functions of retaining first and second time information, and setting a first relay network passing time of a first communication signal directed from a time dissemination device toward a time receiving device through a relay network, and a second relay network passing time of a second communication signal directed from the time receiving device toward the time dissemination device, respectively. In measurement of communication delay time of the first communication network and the second communication network prior to time synchronization, the first and second relay network passing times are unified in advance to exclude uncertainty of the communication time.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: August 2, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Mizutani, Hiroaki Nakazawa, Yoshihiro Ashi, Daiji Mitsunaga, Hideyuki Nakanishi
  • Publication number: 20160210919
    Abstract: A display device including a controller configured to control the source driver and the gate driver based on a control mode for displaying the frame image on the display portion, wherein: in the basic control mode, the controller is configured to display the frame image on the display portion by causing the gate driver to progressively scan all of the N gate signal lines within a predetermined time period, in the low-power control mode, the controller is configured to display a sub-frame image on the display portion by causing the gate driver to scan W gate signal lines within the predetermined time period, and to perform interlaced scanning of the plurality of gate signal lines every K lines, the control mode is configured to shift from the basic control mode to the low-power control mode by way of the first shift control mode.
    Type: Application
    Filed: December 4, 2015
    Publication date: July 21, 2016
    Inventors: Hideyuki NAKANISHI, Junichi MARUYAMA, Toshikazu KOUDO
  • Patent number: 9236018
    Abstract: A display device includes a display portion having gate and source signal lines, and a plurality of pixels, a gate driver that outputs gate signals, a source driver that outputs source signals, and a controller that causes the display portion to display an image at a frame frequency. The controller sets the frame frequency to a first frame frequency F1 when the image is a moving picture, and the controller sets the frame frequency to a second frame frequency F2 lower than F1 when the image is a still picture. The gate driver outputs the gate signals to the gate signal lines in an aligned order of gate signal lines in a second direction when the frame frequency is F1, and the gate driver outputs the gate signals to the gate signal lines in different order from the array order when the frame frequency is F2.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: January 12, 2016
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Hideyuki Nakanishi, Yoshihisa Ooishi, Sachiko Yamazaki
  • Patent number: 9214120
    Abstract: A controller in an intermediate inversion drive mode causes a source driver to alternate polarities of voltages applied to pixel electrodes connected to one of source signal lines per plural gate signal lines, and to apply the voltages so that a pair of the pixel electrodes, which are connected to one of the gate signal lines and to source signal lines adjacent to each other, are subjected to different voltage application in polarity from each other, the source driver alternating polarities of the voltages applied to the respective pixel electrodes for each frame. When the source driver, in the intermediate inversion drive mode, applies the voltages sequentially to the pixel electrodes connected to one of the source signal lines, the controller sets a longer voltage application period for the inverted electrode than for the equivalent electrode.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: December 15, 2015
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Hideyuki Nakanishi, Seiji Kawaguchi
  • Publication number: 20150085852
    Abstract: In an extensive distribution system with no delay guarantee network used as a relay network, an influence of a fluctuation of a communication delay time is avoided to conduct a high-precision time synchronization. First and second delay control devices installed in junctions between communication networks and a relay network, respectively, have functions of retaining first and second time information, and setting a first relay network passing time of a first communication signal directed from a time dissemination device toward a time receiving device through a relay network, and a second relay network passing time of a second communication signal directed from the time receiving device toward the time dissemination device, respectively. In measurement of communication delay time of the first communication network and the second communication network prior to time synchronization, the first and second relay network passing times are unified in advance to exclude uncertainty of the communication time.
    Type: Application
    Filed: August 7, 2014
    Publication date: March 26, 2015
    Applicant: HITACHI, LTD.
    Inventors: Masahiko MIZUTANI, Hiroaki NAKAZAWA, Yoshihiro ASHI, Daiji MITSUNAGA, Hideyuki NAKANISHI
  • Patent number: 8922118
    Abstract: A light-emitting device includes: a package; a semiconductor light-emitting element mounted above the package; a cap component provided above the package; a sealing component which seals a space between the package and the cap component; and a phosphor containing resin including phosphor disposed in the sealed space.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: December 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Kazuhiko Yamanaka, Shinji Yoshida, Shinichi Takigawa, Takuma Katayama, Hideyuki Nakanishi, Tsuyoshi Tanaka
  • Publication number: 20140225877
    Abstract: A display device includes a display portion having gate and source signal lines, and a plurality of pixels, a gate driver that outputs gate signals, a source driver that outputs source signals, and a controller that causes the display portion to display an image at a frame frequency. The controller sets the frame frequency to a first frame frequency F1 when the image is a moving picture, and the controller sets the frame frequency to a second frame frequency F2 lower than F1 when the image is a still picture. The gate driver outputs the gate signals to the gate signal lines in an aligned order of gate signal lines in a second direction when the frame frequency is F1, and the gate driver outputs the gate signals to the gate signal lines in different order from the array order when the frame frequency is F2.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 14, 2014
    Applicant: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Hideyuki NAKANISHI, Yoshihisa OOISHI, Sachiko YAMAZAKI
  • Publication number: 20140125711
    Abstract: A display device includes a display portion having an emitting portion, a brightness distribution storage storing brightness distribution information indicating emission brightness distribution of the display portion and target brightness distribution thereof, a first feature amount calculator calculating a first feature amount of the image for judging an allowable corrective increase amount, from a video signal for plural pixels, and a brightness increase processor making corrective increase for the display brightness of the pixels based on the brightness distribution information and the first feature amount.
    Type: Application
    Filed: May 21, 2012
    Publication date: May 8, 2014
    Applicant: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD,
    Inventors: Toshiki Onishi, Hideyuki Nakanishi, Takahiro Kobayashi
  • Publication number: 20140103798
    Abstract: A light-emitting device includes: a package; a semiconductor light-emitting element mounted above the package; a cap component provided above the package; a sealing component which seals a space between the package and the cap component; and a phosphor containing resin including phosphor disposed in the sealed space.
    Type: Application
    Filed: December 26, 2013
    Publication date: April 17, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Kazuhiko YAMANAKA, Shinji YOSHIDA, Shinichi TAKIGAWA, Takuma KATAYAMA, Hideyuki NAKANISHI, Tsuyoshi TANAKA
  • Publication number: 20140103384
    Abstract: A light-emitting device includes a semiconductor light-emitting element and a fluorescent member which emits fluorescent light when irradiated with light from the semiconductor light-emitting element. The fluorescent member includes (i) oxygen-proof resin having no permeability to oxygen and (ii) resin which includes semiconductor particles having different excitation fluorescence spectra according to particle diameter and is encased in the oxygen-proof resin.
    Type: Application
    Filed: December 24, 2013
    Publication date: April 17, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Shinichi TAKIGAWA, Tsuyoshi TANAKA, Takuma KATAYAMA, Hideyuki NAKANISHI, Shinji YOSHIDA, Kazuhiko YAMANAKA
  • Publication number: 20140071105
    Abstract: A controller in an intermediate inversion drive mode causes a source driver to alternate polarities of voltages applied to pixel electrodes connected to one of source signal lines per plural gate signal lines, and to apply the voltages so that a pair of the pixel electrodes, which are connected to one of the gate signal lines and to source signal lines adjacent to each other, are subjected to different voltage application in polarity from each other, the source driver alternating polarities of the voltages applied to the respective pixel electrodes for each frame. When the source driver, in the intermediate inversion drive mode, applies the voltages sequentially to the pixel electrodes connected to one of the source signal lines, the controller sets a longer voltage application period for the inverted electrode than for the equivalent electrode.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 13, 2014
    Applicant: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Hideyuki NAKANISHI, Seiji KAWAGUCHI
  • Patent number: 8581941
    Abstract: Provided is a backlight device wherein when the drive duty and the drive current are controlled according to a motion, the image quality is improved by preventing flicker caused by the change of the drive waveform. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition. The drive condition specifying unit adjusts the drive condition such that the drive condition temporally smoothly changes.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: November 12, 2013
    Assignee: Panasonic Corporation
    Inventors: Toshiki Onishi, Hideyuki Nakanishi, Takahiro Kobayashi, Yoshio Umeda, Akihiro Yamamura, Seiji Hamada
  • Patent number: 8207953
    Abstract: The backlight apparatus allows brightness control with minimum image quality deterioration. This apparatus has: an illuminating section that radiates illumination light on a back of a liquid crystal panel comprising a plurality of image display areas; and a brightness determining section that determines a light emission brightness value of the illuminating section and renews a light emitting state of the illuminating section, based on the determined light emission brightness value. The illuminating section has light emitting areas illuminating each of a plurality of image display areas. The brightness determining section determines light emission brightness values of the image display areas, from values acquired by applying weights to the information based on input image signals of the image display areas, and changes the weights for the information based on luminance of ambient light surrounding the backlight apparatus.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: June 26, 2012
    Assignee: Panasonic Corporation
    Inventors: Akihiro Yamamura, Takahiro Kobayashi, Hideyuki Nakanishi, Toshiki Onishi, Seiji Hamada, Atsushi Nakanishi
  • Publication number: 20120025716
    Abstract: Disclosed is a backlight device that suppresses the increase of maximum power consumption. A light-emitting unit (121) is provided with a plurality of light-emitting areas that individually emit illumination light. A power estimation unit (136) estimates the power consumption of the light-emitting unit (121). A duty lower-limit setting unit (137) varies the range in which drive conditions that include the duty and peak value of a drive pulse for causing each of the plurality of light-emitting areas to emit light can be set, in accordance with changes in the estimated power consumption. A drive condition specification unit specifies the drive conditions for each of the plurality of light-emitting areas within the varied range. An LED driver (123) drives each of the plurality of light-emitting areas under the specified drive conditions.
    Type: Application
    Filed: September 28, 2010
    Publication date: February 2, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Hideyuki Nakanishi, Yoshio Umeda, Toshiki Onishi, Seiji Hamada
  • Publication number: 20120013652
    Abstract: Provided is a backlight device wherein when the drive duty and the drive current are controlled according to a motion, the image quality is improved by preventing flicker caused by the change of the drive waveform. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition. The drive condition specifying unit adjusts the drive condition such that the drive condition temporally smoothly changes.
    Type: Application
    Filed: September 29, 2010
    Publication date: January 19, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Toshiki Onishi, Hideyuki Nakanishi, Takahiro Kobayashi, Yoshio Umeda, Akihiro Yamamura, Seiji Hamada
  • Publication number: 20120007844
    Abstract: Provided is a backlight device, wherein when the drive duty and drive current are controlled in each of predetermined light-emitting areas of a light-emitting unit, the color unevenness and moving image resolution difference between image display areas corresponding thereto are improved. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of image display areas. A drive condition specifying unit specifies, with respect to each of the plurality of light-emitting areas, a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. An LED driver (123) drives each of the plurality of light-emitting areas on the specified drive condition.
    Type: Application
    Filed: September 28, 2010
    Publication date: January 12, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Hideyuki Nakanishi, Yoshio Umeda, Toshiki Onishi, Takahiro Kobayashi, Seiji Hamada
  • Publication number: 20110316902
    Abstract: Provided is a backlight device, wherein when both the drive duty and the drive current are controlled in each of separated areas, the image quality is improved by preventing the change of luminance even when there is a difference between the adjustment resolutions of both the drive duty and the drive current. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition.
    Type: Application
    Filed: September 29, 2010
    Publication date: December 29, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Toshiki Onishi, Hideyuki Nakanishi, Takahiro Kobayashi, Yoshio Umeda, Akihiro Yamamura, Seiji Hamada