Patents by Inventor Yoshio Maruoka
Yoshio Maruoka 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: 11835812Abstract: A display system includes a lighting device, a correction coefficient generating circuit receiving a plurality of image data including first image data and second image data, generating a first correction coefficient based on a brightness of the first image data and generating a second correction coefficient based on a brightness of the second image data, and the first image data corresponding to a first image and a second image data corresponding to a second image adjacent to the first image and located on the opposite side of the lighting device, a multiplication circuit generating first corrected image data using the first image data and the first correction coefficient, and generating second corrected image data using the second image data and the second correction coefficient, and a display drive control unit transmitting the first and the second corrected image data to the display panel.Type: GrantFiled: April 11, 2022Date of Patent: December 5, 2023Assignee: Japan Display Inc.Inventor: Yoshio Maruoka
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Patent number: 11815702Abstract: According to an aspect, a detection device includes: a substrate that has a detection region; a plurality of photodiodes provided in the detection region; a plurality of lenses provided so as to overlap the respective photodiodes; and a plurality of dummy lenses that are provided in a peripheral region between an outer perimeter of the detection region and edges of the substrate and are provided so as not to overlap the photodiodes.Type: GrantFiled: February 23, 2023Date of Patent: November 14, 2023Assignee: Japan Display Inc.Inventors: Kenichi Akutsu, Atsuko Imoto, Yoshio Maruoka
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Publication number: 20230204826Abstract: According to an aspect, a detection device includes: a substrate that has a detection region; a plurality of photodiodes provided in the detection region; a plurality of lenses provided so as to overlap the respective photodiodes; and a plurality of dummy lenses that are provided in a peripheral region between an outer perimeter of the detection region and edges of the substrate and are provided so as not to overlap the photodiodes.Type: ApplicationFiled: February 23, 2023Publication date: June 29, 2023Inventors: Kenichi AKUTSU, Atsuko IMOTO, Yoshio MARUOKA
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Patent number: 11614569Abstract: According to an aspect, a detection device includes: a substrate that has a detection region; a plurality of photodiodes provided in the detection region; a plurality of lenses provided so as to overlap the respective photodiodes; and a plurality of dummy lenses that are provided in a peripheral region between an outer perimeter of the detection region and edges of the substrate and are provided so as not to overlap the photodiodes.Type: GrantFiled: November 17, 2021Date of Patent: March 28, 2023Assignee: Japan Display Inc.Inventors: Kenichi Akutsu, Atsuko Imoto, Yoshio Maruoka
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Publication number: 20220334421Abstract: A display system includes a lighting device, a correction coefficient generating circuit receiving a plurality of image data including first image data and second image data, generating a first correction coefficient based on a brightness of the first image data and generating a second correction coefficient based on a brightness of the second image data, and the first image data corresponding to a first image and a second image data corresponding to a second image adjacent to the first image and located on the opposite side of the lighting device, a multiplication circuit generating first corrected image data using the first image data and the first correction coefficient, and generating second corrected image data using the second image data and the second correction coefficient, and a display drive control unit transmitting the first and the second corrected image data to the display panel.Type: ApplicationFiled: April 11, 2022Publication date: October 20, 2022Applicant: Japan Display Inc.Inventor: Yoshio MARUOKA
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Publication number: 20220163701Abstract: According to an aspect, a detection device includes: a substrate that has a detection region; a plurality of photodiodes provided in the detection region; a plurality of lenses provided so as to overlap the respective photodiodes; and a plurality of dummy lenses that are provided in a peripheral region between an outer perimeter of the detection region and edges of the substrate and are provided so as not to overlap the photodiodes.Type: ApplicationFiled: November 17, 2021Publication date: May 26, 2022Inventors: Kenichi AKUTSU, Atsuko IMOTO, Yoshio MARUOKA
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Patent number: 7978162Abstract: In a liquid crystal display device which inputs analogue video signals after phase development, the deterioration of display quality due to the irregularities of circuit can be reduced. To correct the irregularities due to a plurality of analogue circuits, the liquid crystal display device includes look up tables for a plurality of analogue circuits in the inside of a digital signal processing circuit. The liquid crystal display device performs the correction of irregularities of the analogue circuits based on data set in the look up tables.Type: GrantFiled: November 1, 2005Date of Patent: July 12, 2011Assignees: Hitachi, Ltd., Hitachi Displays, Ltd.Inventors: Yoshio Maruoka, Toshiki Misonou, Toshio Maeda, Akihiro Watanabe, Hideki Nakagawa
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Patent number: 7209103Abstract: A projector includes a liquid crystal display device has a liquid crystal display panel and a display control device coupled to the liquid crystal display panel. The display control device is composed of a first section for receiving an externally supplied video signal, and a second section succeeding the first section and coupled to the liquid crystal display panel. The second section is formed of a circuit for amplifying and converting the video signal into an ac signal supplied from the first section, and a drive pulse circuit for outputting drive pulses for driving the liquid crystal display panel. The first section and the second section are fabricated on first and second substrates separate from each other, respectively. The second section is disposed proximately to the liquid crystal display panel, and the first section and the second section are coupled via a flexible cable.Type: GrantFiled: February 19, 2003Date of Patent: April 24, 2007Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Toshio Maeda, Akihiro Watanabe, Yoshio Maruoka, Toshiki Misonou, Hideki Nakagawa
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Publication number: 20060139239Abstract: The present invention, in a projector, prevents the generation of a color domain which is generated attributed to the orientation direction having a pretilt angle. In a projector including a light source, a plurality of liquid crystal display panels which modify light irradiated from the light source, and a screen to which the light modified by the respective liquid crystal display panels is projected, the orientation direction of one liquid crystal display panel out of a plurality of liquid crystal display panels differs from the orientation direction of other liquid crystal display panels and the orientation directions of the liquid crystal display panels are aligned on the screen.Type: ApplicationFiled: December 2, 2005Publication date: June 29, 2006Inventors: Toshio Maeda, Toshiki Misonou, Yoshio Maruoka, Akihiro Watanabe, Haruhisa Iida, Eiichirou Itou
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Publication number: 20060050045Abstract: In a liquid crystal display device which inputs analogue video signals after phase development, the deterioration of display quality due to the irregularities of circuit can be reduced. To correct the irregularities due to a plurality of analogue circuits, the liquid crystal display device includes look up tables for a plurality of analogue circuits in the inside of a digital signal processing circuit. The liquid crystal display device performs the correction of irregularities of the analogue circuits based on data set in the look up tables.Type: ApplicationFiled: November 1, 2005Publication date: March 9, 2006Inventors: Yoshio Maruoka, Toshiki Misonou, Toshio Maeda, Akihiro Watanabe, Hideki Nakagawa
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Patent number: 6980189Abstract: In a liquid crystal display device which inputs analogue video signals after phase development, the deterioration of display quality due to the irregularities of circuit can be reduced. To correct the irregularities due to a plurality of analogue circuits, the liquid crystal display device includes look up tables for a plurality of analogue circuits in the inside of a digital signal processing circuit. The liquid crystal display device performs the correction of irregularities of the analogue circuits based on data set in the look up tables.Type: GrantFiled: May 10, 2002Date of Patent: December 27, 2005Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Yoshio Maruoka, Toshiki Misonou, Toshio Maeda, Akihiro Watanabe, Hideki Nakagawa
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Publication number: 20030156086Abstract: A liquid crystal display device has a liquid crystal display panel and a display control device coupled to the liquid crystal display panel. The display control device is composed of a first section for receiving an externally supplied video signal, and a second section succeeding the first section and coupled to the liquid crystal display panel. The second section is formed of a circuit for amplifying and converting the video signal into an ac signal supplied from the first section, and a drive pulse circuit for outputting drive pulses for driving the liquid crystal display panel. The first section and the second section are fabricated on first and second substrates separate from each other, respectively. The second section is disposed proximately to the liquid crystal display panel, and the first section and the second section are coupled via a flexible cable.Type: ApplicationFiled: February 19, 2003Publication date: August 21, 2003Inventors: Toshio Maeda, Akihiro Watanabe, Yoshio Maruoka, Toshiki Misonou, Hideki Nakagawa
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Publication number: 20020186192Abstract: In a liquid crystal display device which inputs analogue video signals after phase development, the deterioration of display quality due to the irregularities of circuit can be reduced. To correct the irregularities due to a plurality of analogue circuits, the liquid crystal display device includes look up tables for a plurality of analogue circuits in the inside of a digital signal processing circuit. The liquid crystal display device performs the correction of irregularities of the analogue circuits based on data set in the look up tables.Type: ApplicationFiled: May 10, 2002Publication date: December 12, 2002Applicant: Hitachi, Ltd.Inventors: Yoshio Maruoka, Toshiki Misonou, Toshio Maede, Akihiro Watanabe, Hideki Nakagawa