Patents by Inventor Satoshi Hirotsune
Satoshi Hirotsune 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: 11114049Abstract: A liquid crystal display device includes: a display unit including a first liquid crystal panel and a second liquid crystal panel disposed on a rear surface side of the first liquid crystal panel; and an image processor that generates first and second output image signals respectively output to the first and second liquid crystal panels based on an input image signal. The image processor includes; a distributor that distributes the input image signal into first and second distribution image signals used to generate the first and second output image signals, respectively; and a first unevenness corrector that generates the first output image signal by performing first unevenness correction to prevent display unevenness of the display unit on the first distribution image signal output from the distributor, and outputs the generated first output image signal to the first liquid crystal panel.Type: GrantFiled: November 21, 2019Date of Patent: September 7, 2021Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.Inventors: Satoshi Hirotsune, Yasuyuki Suga, Tatsuo Itoman
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Publication number: 20210142746Abstract: A liquid crystal display device is disclosed utilizing two or more display panels stacked on top of each other. In a dual panel configuration, the first display panel may be comprised of color pixels and the second display panel may be comprised of contrast pixels. The color pixel in the first display panel has a corresponding contrast pixel in the second display panel wherein said contrast pixel is larger in terms of length and in size than the corresponding color pixel. The liquid crystal display device may also switch to a mode that uses an expansion method of contrast pixels to reduce image displacement. Further disclosed is a configuration where the relative position of the first display panel and the second display panel may be adjusted to align the corresponding color and contrast pixels when viewing the display in oblique angles.Type: ApplicationFiled: January 19, 2021Publication date: May 13, 2021Inventors: Satoshi HIROTSUNE, Katsuji TANAKA
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Patent number: 10937376Abstract: A liquid crystal display device is disclosed utilizing two or more display panels stacked on top of each other. In a dual panel configuration, the first display panel may be comprised of color pixels and the second display panel may be comprised of contrast pixels. The color pixel in the first display panel has a corresponding contrast pixel in the second display panel wherein said contrast pixel is larger in terms of length and in size than the corresponding color pixel. The liquid crystal display device may also switch to a mode that uses an expansion method of contrast pixels to reduce image displacement. Further disclosed is a configuration where the relative position of the first display panel and the second display panel may be adjusted to align the corresponding color and contrast pixels when viewing the display in oblique angles.Type: GrantFiled: October 16, 2018Date of Patent: March 2, 2021Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.Inventors: Satoshi Hirotsune, Katsuji Tanaka
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Patent number: 10867572Abstract: An image display device includes: a display; gate signal lines including a first pixel row and a second pixel row; a gate driver; data signal lines; a source driver; and a controller that determines whether the second pixel row has correlation with the first pixel row in an image. When determining that the second pixel row has the correlation with the first pixel row, the controller causes the source driver to supply the data voltage corresponding to the first pixel row, causes the gate driver to supply the gate signal to write the data voltage in the first pixel row, and causes the gate driver to supply the gate signal to write the data voltage corresponding to the first pixel row in the second pixel row.Type: GrantFiled: November 19, 2019Date of Patent: December 15, 2020Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Tatsuo Itoman, Satoshi Hirotsune
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Patent number: 10783841Abstract: A liquid crystal display device comprises a first and second display panels that display a first image and a second image, respectively based on input image data of m bits, and are both driven by n bits, where n<m, a first gradation decision unit that decides an output gradation of n bits for the first display panel based on a first gradation characteristic, the output gradation of n bits for the first display panel and a second gradation decision unit that decides an output gradation of n bits based on a second gradation characteristic for the second display panel, the output gradation of n bits for the second display panel. At least one of the first and second gradation characteristics includes a gradation inverting portion, where the output gradation decreases when the input gradation rises.Type: GrantFiled: August 29, 2018Date of Patent: September 22, 2020Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.Inventors: Satoshi Hirotsune, Toshikazu Koudo
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Publication number: 20200286440Abstract: An image display device includes: a display; gate signal lines including a first pixel row and a second pixel row; a gate driver; data signal lines; a source driver; and a controller that determines whether the second pixel row has correlation with the first pixel row in an image. When determining that the second pixel row has the correlation with the first pixel row, the controller causes the source driver to supply the data voltage corresponding to the first pixel row, causes the gate driver to supply the gate signal to write the data voltage in the first pixel row, and causes the gate driver to supply the gate signal to write the data voltage corresponding to the first pixel row in the second pixel row.Type: ApplicationFiled: November 19, 2019Publication date: September 10, 2020Inventors: Tatsuo ITOMAN, Satoshi HIROTSUNE
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Image quality adjustment device, image quality adjustment system and image quality adjustment method
Patent number: 10735630Abstract: An image quality adjustment device includes: a lighting controller that controls a display panel including a plurality of pixels, each including arrangement of a plurality of subpixels such that the display panel displays a measurement image in which a part of the plurality of subpixels is lit; and a first electric filter that removes at least a spatial frequency component greater than or equal to fd/2 from a first image obtained by capturing the measurement image displayed on the display panel using an capture device when a panel spatial frequency determined by a pixel pitch of the pixel in a direction in which the plurality of subpixels are arrayed is set to fd.Type: GrantFiled: March 20, 2019Date of Patent: August 4, 2020Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventor: Satoshi Hirotsune -
Publication number: 20200175934Abstract: A liquid crystal display device includes: a display unit including a first liquid crystal panel and a second liquid crystal panel disposed on a rear surface side of the first liquid crystal panel; and an image processor that generates first and second output image signals respectively output to the first and second liquid crystal panels based on an input image signal. The image processor includes; a distributor that distributes the input image signal into first and second distribution image signals used to generate the first and second output image signals, respectively; and a first unevenness corrector that generates the first output image signal by performing first unevenness correction to prevent display unevenness of the display unit on the first distribution image signal output from the distributor, and outputs the generated first output image signal to the first liquid crystal panel.Type: ApplicationFiled: November 21, 2019Publication date: June 4, 2020Inventors: Satoshi HIROTSUNE, Yasuyuki SUGA, Tatsuo ITOMAN
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Publication number: 20200118502Abstract: A liquid crystal display device is disclosed utilizing two or more display panels stacked on top of each other. In a dual panel configuration, the first display panel may be comprised of color pixels and the second display panel may be comprised of contrast pixels. The color pixel in the first display panel has a corresponding contrast pixel in the second display panel wherein said contrast pixel is larger in terms of length and in size than the corresponding color pixel. The liquid crystal display device may also switch to a mode that uses an expansion method of contrast pixels to reduce image displacement. Further disclosed is a configuration where the relative position of the first display panel and the second display panel may be adjusted to align the corresponding color and contrast pixels when viewing the display in oblique angles.Type: ApplicationFiled: October 16, 2018Publication date: April 16, 2020Inventors: Satoshi HIROTSUNE, Katsuji TANAKA
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Patent number: 10559269Abstract: An electronic display device includes a first display panel and a second display panel that are positioned in a stacked configuration. Each of the first display panel and second display panel has pixels. An image processing unit of the electronic display device is configured to generate color image data for the first display panel or contrast image data for the second display panel by applying an expansion based on a viewing position. A method of displaying an image on an electronic display device includes generating color image data and generating contrast image data. One of generating color image data or generating contrast image data includes an expansion based on a viewing position.Type: GrantFiled: March 30, 2018Date of Patent: February 11, 2020Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventor: Satoshi Hirotsune
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Publication number: 20190304381Abstract: An electronic display device includes a first display panel and a second display panel that are positioned in a stacked configuration. Each of the first display panel and second display panel has pixels. An image processing unit of the electronic display device is configured to generate color image data for the first display panel or contrast image data for the second display panel by applying an expansion based on a viewing position. A method of displaying an image on an electronic display device includes generating color image data and generating contrast image data. One of generating color image data or generating contrast image data includes an expansion based on a viewing position.Type: ApplicationFiled: March 30, 2018Publication date: October 3, 2019Inventor: Satoshi HIROTSUNE
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IMAGE QUALITY ADJUSTMENT DEVICE, IMAGE QUALITY ADJUSTMENT SYSTEM AND IMAGE QUALITY ADJUSTMENT METHOD
Publication number: 20190306384Abstract: An image quality adjustment device includes: a lighting controller that controls a display panel including a plurality of pixels, each including arrangement of a plurality of subpixels such that the display panel displays a measurement image in which a part of the plurality of subpixels is lit; and a first electric filter that removes at least a spatial frequency component greater than or equal to fd/2 from a first image obtained by capturing the measurement image displayed on the display panel using an capture device when a panel spatial frequency determined by a pixel pitch of the pixel in a direction in which the plurality of subpixels are arrayed is set to fd.Type: ApplicationFiled: March 20, 2019Publication date: October 3, 2019Inventor: Satoshi HIROTSUNE -
Publication number: 20190066609Abstract: A liquid crystal display device comprises a first and second display panels that display a first image and a second image, respectively based on input image data of m bits, and are both driven by n bits, where n<m, a first gradation decision unit that decides an output gradation of n bits for the first display panel based on a first gradation characteristic, the output gradation of n bits for the first display panel and a second gradation decision unit that decides an output gradation of n bits based on a second gradation characteristic for the second display panel, the output gradation of n bits for the second display panel. At least one of the first and second gradation characteristics includes a gradation inverting portion, where the output gradation decreases when the input gradation rises.Type: ApplicationFiled: August 29, 2018Publication date: February 28, 2019Inventors: Satoshi HIROTSUNE, Toshikazu KOUDO
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Patent number: 9448673Abstract: Provided is a touch detection device, including: a plurality of resonant circuits arranged along a touch detection surface; an input signal line for inputting, to each of the plurality of resonant circuits, an input signal for causing resonance; and a detecting unit for detecting frequencies of a plurality of output signals output from the plurality of resonant circuits.Type: GrantFiled: February 27, 2014Date of Patent: September 20, 2016Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Satoshi Hirotsune, Akihiro Yamamura
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Publication number: 20150035793Abstract: Provided is a touch detection device, including: a plurality of resonant circuits arranged along a touch detection surface; an input signal line for inputting, to each of the plurality of resonant circuits, an input signal for causing resonance; and a detecting unit for detecting frequencies of a plurality of output signals output from the plurality of resonant circuits.Type: ApplicationFiled: February 27, 2014Publication date: February 5, 2015Applicant: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Satoshi HIROTSUNE, Akihiro YAMAMURA
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Publication number: 20140139469Abstract: A touch panel device includes first and second electrode pairs each of which is provided on a substrate so as to form a capacitor, a first wire connected to one electrode of the first electrode pair, a second wire connected to one electrode of the second electrode pair, a voltage applying portion connected to the first and second wires and respectively applying first and second voltages to the first and second wires, a detector respectively detecting, as first and second detection voltages, voltages of the first and second electrode pairs respectively generated by applying the first and second voltages from the voltage applying portion, and a processor performing predetermined processing in response to the first and second detection voltages detected by the detector. The first wire is longer than the second wire. The voltage applying portion sets the first voltage higher than the second voltage.Type: ApplicationFiled: November 21, 2013Publication date: May 22, 2014Applicant: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD,Inventor: Satoshi HIROTSUNE
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Publication number: 20140125613Abstract: A touch detection device includes a touch panel including a first electrode part arranged so as to extend in a first direction and a second electrode part arranged so as to extend in a second direction that is different from the first direction. The touch detection device also includes a pulse generating unit configured to output a pulse signal to the first electrode part, a resistance element arranged between an output terminal of the pulse generating unit and the first electrode part, and a touch detecting unit configured to detect whether the touch panel is touched or not based on a phase difference in a voltage signal of the second electrode part, which is generated in accordance with the pulse signal. The phase difference is based on whether the touch panel is touched or not.Type: ApplicationFiled: November 4, 2013Publication date: May 8, 2014Applicant: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Natsuki KOMATSU, Nobumichi TAKABA, Takatsugu YAMAGATA, Shingo ARIKAWA, Satoshi HIROTSUNE, Akihiro YAMAMURA
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Publication number: 20120188348Abstract: A video display device and a video view system with which occurrence of crosstalk can be avoided in stereoscopic video images. The device has a liquid crystal panel on which the video image for the left eye corresponding to the video signal for the left eye and the video image for the right eye corresponding to the video signal for the right eye are displayed, and a driving unit which drives the liquid crystal panel by executing at least two times of write-scanning respectively according to the driving amount based on the respective video signal for the left or right eye, wherein in each write-scanning, the driving unit performs an overdrive operation in which the liquid crystal panel is driven according to a driving amount based on a target luminance.Type: ApplicationFiled: January 24, 2012Publication date: July 26, 2012Inventors: Yoshio Umeda, Takahiro Kobayashi, Seiji Hamada, Satoshi Hirotsune
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Publication number: 20110304709Abstract: A liquid crystal drive unit performs overdrive processing such that when driving a liquid crystal panel so as to increase a brightness toward a target brightness determined by a left-eye video signal or a right-eye video signal, the liquid crystal drive unit drives the liquid crystal panel in accordance with a drive amount corresponding to a brightness of not less than the target brightness and, when driving the liquid crystal panel so as to reduce the brightness toward the target brightness, the liquid crystal drive unit drives the liquid crystal panel in accordance with a drive amount corresponding to a brightness of not more than the target brightness. In the overdrive processing, the drive amount corresponding to the same target brightness differs depending on a scanning position on a display screen of the liquid crystal panel.Type: ApplicationFiled: June 3, 2011Publication date: December 15, 2011Inventors: Yoshio UMEDA, Takahiro Kobayashi, Seiji Hamada, Satoshi Hirotsune
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Patent number: 6756985Abstract: An image processor having a frame memory for storing image data to newly generate purposed image data to be displayed by processing the image data in the frame memory, in which a processing memory for previously storing reference pixel coordinates for processing the image data is included and the data for the reference pixel coordinates in the processing memory is provided for the frame memory as an image-data read address.Type: GrantFiled: June 15, 1999Date of Patent: June 29, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Satoshi Hirotsune, Tsutomu Muraji