Patents by Inventor Naoyuki Takasaki
Naoyuki Takasaki 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: 20240143901Abstract: Provided is an information processing device including a processor, and a memory storing instructions that, when executed by the processor, cause the information processing device to: accept a cancel operation that cancels a first operation performed through an input device used for writing input, acquire learning information representing a result of learning about a relation between content of the first operation and content of a second operation performed through the input device after the cancel operation is accepted, and correct writing information representing a writing product corresponding to a third operation performed through the input device or writing setting information concerning a setting at a time of writing corresponding to the third operation, based on the learning information.Type: ApplicationFiled: January 3, 2024Publication date: May 2, 2024Inventors: Naoki WATANABE, Yutaka KISA, Naoyuki TAKASAKI, Hideyuki HARA
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Patent number: 11749214Abstract: A display device is provided and includes display panel comprising plurality of pixels; and light source device configured to emit light that illuminates display panel, wherein display panel is configured to control operation of light source device, display panel does not lower luminance of light for second predetermined time or longer after display panel has raised luminance of light by predetermined amount of luminance change or more within first predetermined time, and when image changes from first image other than raster image and ramp image to second image that is either of raster image and ramp image, display panel lowers luminance of light within time shorter than second predetermined time even after luminance of light has been raised by predetermined amount of luminance change or more within first predetermined time.Type: GrantFiled: March 22, 2021Date of Patent: September 5, 2023Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Tsutomu Harada, Naoyuki Takasaki, Toshiyuki Nagatsuma
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Publication number: 20210210028Abstract: A display device is provided and includes display panel comprising plurality of pixels; and light source device configured to emit light that illuminates display panel, wherein display panel is configured to control operation of light source device, display panel does not lower luminance of light for second predetermined time or longer after display panel has raised luminance of light by predetermined amount of luminance change or more within first predetermined time, and when image changes from first image other than raster image and ramp image to second image that is either of raster image and ramp image, display panel lowers luminance of light within time shorter than second predetermined time even after luminance of light has been raised by predetermined amount of luminance change or more within first predetermined time.Type: ApplicationFiled: March 22, 2021Publication date: July 8, 2021Inventors: Kazuhiko SAKO, Tsutomu HARADA, Naoyuki TAKASAKI, Toshiyuki NAGATSUMA
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Patent number: 10957261Abstract: According to an aspect, a display device includes a display unit including a plurality of pixels, a light source device that emits light that illuminates the display unit, and a controller that controls operation of the light source device. The controller does not lower luminance of the light for a second predetermined time or longer after the controller has raised the luminance of the light by a predetermined amount of luminance change or more within a first predetermined time.Type: GrantFiled: January 15, 2019Date of Patent: March 23, 2021Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Tsutomu Harada, Naoyuki Takasaki, Toshiyuki Nagatsuma
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Patent number: 10841546Abstract: According to one embodiment, a display device includes an optical modulation element configured to emit image light corresponding to an image by using illumination light from an illumination device, a polarization control element configured to emit first polarized light, and second polarized light on the basis of the image light receiving from the optical modulation element, a polarization separation element configured to transmit the first polarized light as transmitted light and reflect the second polarized light as reflected light, and a projector configured to project the transmitted light onto a first projection area of a projection plane, and projects reflected light onto a second projection area of the projection plane.Type: GrantFiled: October 2, 2019Date of Patent: November 17, 2020Assignee: Japan Display Inc.Inventors: Tatsuya Yata, Naoyuki Takasaki
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Patent number: 10770008Abstract: According to an aspect, a display device includes a display panel comprising a plurality of pixels, a light guide plate, a light source configured to emit light from a lateral side of the light guide plate, a dimming panel, and a controller. The dimming panel comprises a plurality of dimming areas arranged in an emission direction of the light from the light source. The dimming areas are capable of individually changing transmittance of the light according to intensities of light required to display an image using the display panel. When adjacent two of the dimming areas differ in light transmittance from each other, the controller increases output gradation values of target pixels, the target pixels being located in a predetermined area extending from a boundary between the two dimming areas in one of the two dimming areas that has lower light transmittance.Type: GrantFiled: July 19, 2018Date of Patent: September 8, 2020Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Daichi Suzuki, Naoyuki Takasaki, Tsutomu Harada, Kojiro Ikeda
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Patent number: 10591769Abstract: According to an aspect, a display device includes: a display panel including a display area provided with pixels; an illuminator including an illumination area configured to emit light to the display panel such that the display area is illuminated from one surface side of the display panel; and a liquid crystal dimming panel overlapping the display panel, and including a dimming area configured to be adjusted in transmittance of the light emitted to another surface side of the display panel through the display area. The illumination area includes first segment regions configured such that luminance levels thereof are individually adjusted. The dimming area includes second segment regions configured such that the light transmittances thereof are individually adjusted. Each of the first segment regions overlaps more than one of the second segment regions. Each of the second segment regions overlaps more than one of the pixels.Type: GrantFiled: August 21, 2018Date of Patent: March 17, 2020Assignee: Japan Display Inc.Inventors: Tsutomu Harada, Daichi Suzuki, Kazuhiko Sako, Naoyuki Takasaki, Kazunari Tomizawa
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Patent number: 10578866Abstract: According to one embodiment, a display device includes a polarization separation element which transmits first polarized light, and reflects second polarized light, a first optical modulation unit which displays a first image by using transmitted light, a second optical modulation unit which displays a second image by using reflected light, and a projector which projects the first image onto a first projection area of a projection plane, and projects the second image onto a second projection area different from the first projection area of the projection plane.Type: GrantFiled: February 5, 2019Date of Patent: March 3, 2020Assignee: Japan Display Inc.Inventors: Tatsuya Yata, Naoyuki Takasaki
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Publication number: 20200036947Abstract: According to one embodiment, a display device includes an optical modulation element configured to emit image light corresponding to an image by using illumination light from an illumination device, a polarization control element configured to emit first polarized light, and second polarized light on the basis of the image light receiving from the optical modulation element, a polarization separation element configured to transmit the first polarized light as transmitted light and reflect the second polarized light as reflected light, and a projector configured to project the transmitted light onto a first projection area of a projection plane, and projects reflected light onto a second projection area of the projection plane.Type: ApplicationFiled: October 2, 2019Publication date: January 30, 2020Inventors: Tatsuya Yata, Naoyuki Takasaki
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Patent number: 10477169Abstract: According to one embodiment, a display device includes an optical modulation element configured to emit image light corresponding to an image by using illumination light from an illumination device, a polarization control element configured to emit first polarized light, and second polarized light on the basis of the image light receiving from the optical modulation element, a polarization separation element configured to transmit the first polarized light as transmitted light and reflect the second polarized light as reflected light, and a projector configured to project the transmitted light onto a first projection area of a projection plane, and projects reflected light onto a second projection area of the projection plane.Type: GrantFiled: December 19, 2018Date of Patent: November 12, 2019Assignee: Japan Display Inc.Inventors: Tatsuya Yata, Naoyuki Takasaki
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Patent number: 10453376Abstract: An image display device includes a first pixel data calculator calculating first pixel data for a pixel of attention based on a first error value for a pixel adjacent thereto in the same error diffusion block; a second pixel data calculator calculating second pixel data for the pixel of attention based on a corrected error value for the adjacent pixel; a first error value calculator calculating the first error value based on the first pixel data; a second error value calculator calculating a second error value based on the second pixel data; and a corrected error value calculator calculating the corrected error value by correcting the second error value in a direction in which the second error value approaches the first error value in accordance with whether the pixel of attention is located within a predetermined range from a border among a plurality of error diffusion blocks.Type: GrantFiled: February 27, 2017Date of Patent: October 22, 2019Assignee: Japan Display Inc.Inventors: Tadafumi Ozaki, Kazuhiko Sako, Tsutomu Harada, Naoyuki Takasaki
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Patent number: 10431146Abstract: A signal processor of a display device includes: a light emission value calculating unit that calculates a light emission value; a chunk determining unit that determines whether pixels within a predetermined luminance value range are continuously present and determines an area of the continuous pixels as a chunk; a maximum luminance value detecting unit that detects a maximum luminance value inside the chunk in one of the partial areas; a luminance gain value determining unit that determines a luminance gain value based on the maximum luminance value such that a corrected light emission value that is a value acquired by multiplying the light emission value by the luminance gain value is a value of an upper limit emission value or less; and a light emission control unit that causes the light source units to emit light based on the corrected light emission value.Type: GrantFiled: August 9, 2017Date of Patent: October 1, 2019Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Kazunari Tomizawa, Tsutomu Harada, Naoyuki Takasaki, Tae Kurokawa
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Patent number: 10373572Abstract: A display device includes an image display panel, a light source unit, and a signal processing unit. The tentative expansion coefficient calculating unit calculates a tentative expansion coefficient. The tentative index value calculating unit calculates a tentative index value serving as an index of the irradiation amount of light based on the tentative expansion coefficient. The low-saturation pixel detecting unit detects low-saturation pixels in a certain region on an image display surface. The light irradiation amount calculating unit calculates a comparative light irradiation amount based on a detection by the low-saturation pixel detecting unit, a display quality maintenance reference value at which the display quality of colors displayed by the low-saturation pixels is maintained, and an index value calculated based on the tentative index value and calculates, based on the comparative light irradiation amount, a light irradiation amount serving as the irradiation amount of light.Type: GrantFiled: February 5, 2016Date of Patent: August 6, 2019Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Naoyuki Takasaki, Tsutomu Harada
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Publication number: 20190221168Abstract: According to an aspect, a display device includes a display unit including a plurality of pixels, a light source device that emits light that illuminates the display unit, and a controller that controls operation of the light source device. The controller does not lower luminance of the light for a second predetermined time or longer after the controller has raised the luminance of the light by a predetermined amount of luminance change or more within a first predetermined time.Type: ApplicationFiled: January 15, 2019Publication date: July 18, 2019Inventors: Kazuhiko SAKO, Tsutomu HARADA, Naoyuki TAKASAKI, Toshiyuki NAGATSUMA
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Patent number: 10345508Abstract: According to one embodiment, an illumination device includes a light source, clad, and a plurality of cores. The clad includes a first edge at a light source side, a second edge opposite to the first edge, and a plurality of grooves formed by a plurality of partitions extending in parallel to each other from the first edge to the second edge. The cores are accommodated in the grooves, and each core includes an incident surface on which light from the light source is incident and an exit surface exposed from the groove to emit the light incident on the incident surface.Type: GrantFiled: January 25, 2018Date of Patent: July 9, 2019Assignee: Japan Display Inc.Inventors: Shigenori Aoki, Susumu Kimura, Tsutomu Harada, Naoyuki Takasaki
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Publication number: 20190171009Abstract: According to one embodiment, a display device includes a polarization separation element which transmits first polarized light, and reflects second polarized light, a first optical modulation unit which displays a first image by using transmitted light, a second optical modulation unit which displays a second image by using reflected light, and a projector which projects the first image onto a first projection area of a projection plane, and projects the second image onto a second projection area different from the first projection area of the projection plane.Type: ApplicationFiled: February 5, 2019Publication date: June 6, 2019Inventors: Tatsuya Yata, Naoyuki Takasaki
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Patent number: 10297231Abstract: According to an aspect, a display apparatus includes: an image display panel including a plurality of pixels and displaying an image; and a signal processor generating a second signal by multiplying signal values for a plurality of sub-pixels making up each of the plurality of pixels by a gain, the signal values being included in a first signal that is an input signal of the image. The the signal processor calculates a luminance of each of the plurality of pixels based on the signal values of the sub-pixels included in the respective pixels. The signal processor increases the gain by which the signal values of the sub-pixels of the pixel having a luminance greater than a first luminance threshold are multiplied, in accordance with the luminance of the corresponding pixel.Type: GrantFiled: August 15, 2017Date of Patent: May 21, 2019Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Kazunari Tomizawa, Tsutomu Harada, Naoyuki Takasaki, Tae Kurokawa
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Publication number: 20190149781Abstract: According to one embodiment, a display device includes an optical modulation element configured to emit image light corresponding to an image by using illumination light from an illumination device, a polarization control element configured to emit first polarized light, and second polarized light on the basis of the image light receiving from the optical modulation element, a polarization separation element configured to transmit the first polarized light as transmitted light and reflect the second polarized light as reflected light, and a projector configured to project the transmitted light onto a first projection area of a projection plane, and projects reflected light onto a second projection area of the projection plane.Type: ApplicationFiled: December 19, 2018Publication date: May 16, 2019Inventors: Tatsuya Yata, Naoyuki Takasaki
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Patent number: 10269313Abstract: In a display device, pixels each including first to fourth subpixels that respectively display first to third primary colors and fourth color are arranged on an image display panel. A lighting unit emits light to the panel from the rear thereof. A control unit calculates a required luminance value for each block of the display surface of the panel based on an input image signal, determines a light source lighting amount of the lighting unit based on luminance distribution information on the lighting unit so as to satisfy the required luminance value, generates luminance information on each pixel based on the luminance distribution information and light source lighting amount, generates an output image signal that drives the subpixels based on the luminance information and input image signal, controls the lighting unit by the light source lighting amount, and controls the panel by the output image signal.Type: GrantFiled: April 20, 2017Date of Patent: April 23, 2019Assignee: Japan Display Inc.Inventors: Tsutomu Harada, Naoyuki Takasaki, Akira Sakaigawa, Amane Higashi
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Patent number: 10254541Abstract: According to one embodiment, a display device includes a polarization separation element which transmits first polarized light, and reflects second polarized light, a first optical modulation unit which displays a first image by using transmitted light, a second optical modulation unit which displays a second image by using reflected light, and a projector which projects the first image onto a first projection area of a projection plane, and projects the second image onto a second projection area different from the first projection area of the projection plane.Type: GrantFiled: October 30, 2017Date of Patent: April 9, 2019Assignee: Japan Display Inc.Inventors: Tatsuya Yata, Naoyuki Takasaki