Patents by Inventor Fumitaka SEKI
Fumitaka SEKI 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: 20240119894Abstract: A display apparatus includes: a display; a display driver that drives the display such that the display displays in accordance with display data; and a host controller that transfers update display data of one screen to the display driver. The display driver includes a light-emission controller that causes a self-luminous elements to emit light, and a memory that stores the update display data of the one screen. The display driver reads the update display data on the memory after an elapse of a predetermined period of time from a drive end time at which the display controller finishes driving in accordance with the update display data and drives the screen by using the read update display data. The display driver drives the self-luminous elements once or more at a timing when the update display data from the host controller to the display driver is not updated.Type: ApplicationFiled: December 15, 2023Publication date: April 11, 2024Inventors: YUICHI SATO, KENJI MAEDA, SHINJI YAMAMOTO, TAKUYA OKAMOTO, FUMITAKA SEKI, MASAFUMI ITO, YOHICHI TAKAZANE
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Patent number: 11881163Abstract: A display apparatus includes: a display; a display driver that drives the display such that the display displays in accordance with display data; and a host controller that transfers update display data of one screen to the display driver. The display driver includes a light-emission controller that causes a self-luminous elements to emit light, and a memory that stores the update display data of the one screen. The display driver reads the update display data on the memory after an elapse of a predetermined period of time from a drive end time at which the display controller finishes driving in accordance with the update display data and drives the screen by using the read update display data. The display driver drives the self-luminous elements once or more at a timing when the update display data from the host controller to the display driver is not updated.Type: GrantFiled: December 14, 2022Date of Patent: January 23, 2024Assignee: SHARP KABUSHIKI KAISHAInventors: Yuichi Sato, Kenji Maeda, Shinji Yamamoto, Takuya Okamoto, Fumitaka Seki, Masafumi Ito, Yohichi Takazane
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Publication number: 20230111513Abstract: A display apparatus includes: a display; a display driver that drives the display such that the display displays in accordance with display data; and a host controller that transfers update display data of one screen to the display driver. The display driver includes a light-emission controller that causes a self-luminous elements to emit light, and a memory that stores the update display data of the one screen. The display driver reads the update display data on the memory after an elapse of a predetermined period of time from a drive end time at which the display controller finishes driving in accordance with the update display data and drives the screen by using the read update display data. The display driver drives the self-luminous elements once or more at a timing when the update display data from the host controller to the display driver is not updated.Type: ApplicationFiled: December 14, 2022Publication date: April 13, 2023Inventors: YUICHI SATO, KENJI MAEDA, SHINJI YAMAMOTO, TAKUYA OKAMOTO, FUMITAKA SEKI, MASAFUMI ITO, YOHICHI TAKAZANE
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Patent number: 11557250Abstract: A display apparatus includes: a display; a display driver that drives the display such that the display displays in accordance with display data; and a host controller that transfers update display data of one screen to the display driver. The display driver includes a light-emission controller that causes a self-luminous elements to emit light, and a memory that stores the update display data of the one screen. The display driver reads the update display data on the memory after an elapse of a predetermined period of time from a drive end time at which the display controller finishes driving in accordance with the update display data and drives the screen by using the read update display data. The display driver drives the self-luminous elements once or more at a timing when the update display data from the host controller to the display driver is not updated.Type: GrantFiled: July 28, 2021Date of Patent: January 17, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Yuichi Sato, Kenji Maeda, Shinji Yamamoto, Takuya Okamoto, Fumitaka Seki, Masafumi Ito, Yohichi Takazane
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Patent number: 11308884Abstract: A display device includes: a display unit; a display driver configured to drive the display unit; and a display-data generator configured to transfer a screenful of update display data to the display driver. The display driver includes a light-emission controller configured to control self-luminous elements to emit light, and a memory storing a screenful of the update display data. After a lapse of a predetermined time period from a driving stop time, the display driver reads the update display data stored in the memory and then uses the update display data to drive a screen, the driving stop time being a time when the display unit is stopped from driving based on the update display data. The display driver causes the self-luminous elements of the display unit to emit light, even during a display update or no display update performed on the display driver by the display-data generator.Type: GrantFiled: August 9, 2021Date of Patent: April 19, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Fumitaka Seki, Kenji Maeda, Takuya Okamoto, Shinji Yamamoto, Yuichi Sato, Masafumi Ito, Yohichi Takazane
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Publication number: 20220059033Abstract: A display device includes: a display unit; a display driver configured to drive the display unit; and a display-data generator configured to transfer a screenful of update display data to the display driver. The display driver includes a light-emission controller configured to control self-luminous elements to emit light, and a memory storing a screenful of the update display data. After a lapse of a predetermined time period from a driving stop time, the display driver reads the update display data stored in the memory and then uses the update display data to drive a screen, the driving stop time being a time when the display unit is stopped from driving based on the update display data. The display driver causes the self-luminous elements of the display unit to emit light, even during a display update or no display update performed on the display driver by the display-data generator.Type: ApplicationFiled: August 9, 2021Publication date: February 24, 2022Inventors: FUMITAKA SEKI, KENJI MAEDA, TAKUYA OKAMOTO, SHINJI YAMAMOTO, YUICHI SATO, MASAFUMI ITO, YOHICHI TAKAZANE
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Publication number: 20220059028Abstract: A control apparatus configured to control a display apparatus including a self-luminous element includes: an image judgment unit configured to determine whether or not a ratio of a number of pixels located in a predetermined area of an image and having gradation levels within a gradation range from a first gradation level not equal to a lowest gradation level to a second gradation level not equal to a highest gradation level is equal to or larger than a threshold value; and a drive change unit configured to determine a refresh rate of the display apparatus including the self-luminous element according to a result of the determination made by the image judgment unit. The image judgment unit is configured to determine at least one of (1) the value of the first gradation level and the value of the second gradation level, and (2) the threshold value.Type: ApplicationFiled: August 6, 2021Publication date: February 24, 2022Inventors: MASAFUMI ITO, KENJI MAEDA, TAKUYA OKAMOTO, SHINJI YAMAMOTO, FUMITAKA SEKI, YUICHI SATO, YOHICHI TAKAZANE
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Publication number: 20220059027Abstract: A display apparatus includes: a display; a display driver that drives the display such that the display displays in accordance with display data; and a host controller that transfers update display data of one screen to the display driver. The display driver includes a light-emission controller that causes a self-luminous elements to emit light, and a memory that stores the update display data of the one screen. The display driver reads the update display data on the memory after an elapse of a predetermined period of time from a drive end time at which the display controller finishes driving in accordance with the update display data and drives the screen by using the read update display data. The display driver drives the self-luminous elements once or more at a timing when the update display data from the host controller to the display driver is not updated.Type: ApplicationFiled: July 28, 2021Publication date: February 24, 2022Inventors: YUICHI SATO, KENJI MAEDA, SHINJI YAMAMOTO, TAKUYA OKAMOTO, FUMITAKA SEKI, MASAFUMI ITO, YOHICHI TAKAZANE
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Patent number: 10891912Abstract: The present invention relates to a light emitting device and achieves either desirable color reproduction or improved image quality of a moving image according to the usage of an electronic device. The electronic device includes a first light emitting device and a second light emitting device having color reproducibility lower than that of the first light emitting device and having a response speed faster than that of the first light emitting device, and a control device includes a light emission control section configured to control light emission of the first light emitting device and light emission of the second light emitting device according to a usage of the electronic device such that a relation between luminance of the first light emitting device and luminance of the second light emitting device satisfies a predetermined condition.Type: GrantFiled: June 4, 2019Date of Patent: January 12, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Fumitaka Seki, Kenji Maeda
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Patent number: 10825403Abstract: The present invention relates to a light emitting device and achieves either a high luminance with low power consumption or an increased image quality of a moving image according to the usage of an electronic device. The electronic device includes a first light emitting device and a second light emitting device, and a control device includes a light emission control section configured to control light emission of the first light emitting device and light emission of the second light emitting device according to a usage of the electronic device such that a relation between luminance of the first light emitting device and luminance of the second light emitting device satisfies a predetermined condition.Type: GrantFiled: April 25, 2019Date of Patent: November 3, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Fumitaka Seki, Kenji Maeda
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Publication number: 20190378469Abstract: The present invention relates to a light emitting device and achieves either desirable color reproduction or improved image quality of a moving image according to the usage of an electronic device. The electronic device includes a first light emitting device and a second light emitting device having color reproducibility lower than that of the first light emitting device and having a response speed faster than that of the first light emitting device, and a control device includes a light emission control section configured to control light emission of the first light emitting device and light emission of the second light emitting device according to a usage of the electronic device such that a relation between luminance of the first light emitting device and luminance of the second light emitting device satisfies a predetermined condition.Type: ApplicationFiled: June 4, 2019Publication date: December 12, 2019Inventors: FUMITAKA SEKI, KENJI MAEDA
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Publication number: 20190333453Abstract: The present invention relates to a light emitting device and achieves either a high luminance with low power consumption or an increased image quality of a moving image according to the usage of an electronic device. The electronic device includes a first light emitting device and a second light emitting device, and a control device includes a light emission control section configured to control light emission of the first light emitting device and light emission of the second light emitting device according to a usage of the electronic device such that a relation between luminance of the first light emitting device and luminance of the second light emitting device satisfies a predetermined condition.Type: ApplicationFiled: April 25, 2019Publication date: October 31, 2019Inventors: FUMITAKA SEKI, KENJI MAEDA
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Publication number: 20190180699Abstract: A display device includes a display control section configured to control an LCD and a backlight. The display control section causes the backlight to illuminate, during a time period in which an optical transmittance of the LCD is being changed, in an illumination pattern having N (N is an integer of two or more) light emission intensity levels that range from a first level to an Nth level.Type: ApplicationFiled: December 3, 2018Publication date: June 13, 2019Inventors: FUMITAKA SEKI, KENJI MAEDA
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Patent number: 10152812Abstract: A display device includes control electronics and a pixellated liquid crystal (LC) panel. The control electronics receives inputs of main image data for a main image and side image data for a side image. The control electronics outputs combined image data combining the main and side images such that an on-axis viewer perceives from the combined image the main image, and an off-axis viewer perceives from the combined image the side image. The output image data comprises data values chosen from a set of available output data values for the pixels selected from multiple sets of available data values depending on at least on the side image data. For a pixel currently being processed, the output data value is chosen from the selected set of available output data values for which a resulting luminance value is closest to a target luminance value for the current pixel.Type: GrantFiled: October 23, 2015Date of Patent: December 11, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Edward Heywood-Lonsdale, Benjamin John Broughton, Nathan James Smith, Kenji Maeda, Fumitaka Seki, Paul Antony Gass
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Patent number: 10013922Abstract: Included are: an image analyzing section (32) which determines whether an image is a still image or a moving image; an image processing section (33) which, in a case where the image analyzing section (32) determines that the image is the moving image, increases pixel values of respective pixels of a display screen from those before the image analyzing section (32) determines that the image is the moving image; and a BL control section (34) which lowers brightness of a backlight (41) from that before the image analyzing section (32) determines that the image is the moving image.Type: GrantFiled: August 26, 2014Date of Patent: July 3, 2018Assignee: SHARP KABUSHIKI KAISHAInventor: Fumitaka Seki
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Patent number: 9691335Abstract: The present invention includes a write-in start position control section (36) that performs a process of shifting, by a given shifting amount, a start position of a write-in operation to the frame memory (31), when the write-in operation is started, the given shifting amount being predetermined so as not to exceed a capacity reserved in advance in the frame memory.Type: GrantFiled: August 29, 2013Date of Patent: June 27, 2017Assignee: Sharp Kabushiki KaishaInventors: Junki Asai, Fumitaka Seki
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Publication number: 20170116766Abstract: A display device includes control electronics and a pixellated liquid crystal (LC) panel. The control electronics receives inputs of main image data for a main image and side image data for a side image. The control electronics outputs combined image data combining the main and side images such that an on-axis viewer perceives from the combined image the main image, and an off-axis viewer perceives from the combined image the side image. The output image data comprises data values chosen from a set of available output data values for the pixels selected from multiple sets of available data values depending on at least on the side image data. For a pixel currently being processed, the output data value is chosen from the selected set of available output data values for which a resulting luminance value is closest to a target luminance value for the current pixel.Type: ApplicationFiled: October 23, 2015Publication date: April 27, 2017Inventors: Edward Heywood-Lonsdale, Benjamin John Broughton, Nathan James Smith, Kenji Maeda, Fumitaka Seki, Paul Antony Gass
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Patent number: 9583047Abstract: A control device executes a program including the steps of: when an unintended black image is detected, notifying a target value of brightness of a backlight and a correction amount of brightness of an image immediately before the black image is detected, until a predetermined time elapses; correcting the image based on the notified correction amount of the brightness of the image; causing a liquid crystal panel to display the corrected image; and controlling the backlight based on the notified target value of the brightness of the backlight.Type: GrantFiled: September 4, 2013Date of Patent: February 28, 2017Assignee: Sharp Kabushiki KaishaInventor: Fumitaka Seki
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Publication number: 20160210908Abstract: Included are: an image analyzing section (32) which determines whether an image is a still image or a moving image; an image processing section (33) which, in a case where the image analyzing section (32) determines that the image is the moving image, increases pixel values of respective pixels of a display screen from those before the image analyzing section (32) determines that the image is the moving image; and a BL control section (34) which lowers brightness of a backlight (41) from that before the image analyzing section (32) determines that the image is the moving image.Type: ApplicationFiled: August 26, 2014Publication date: July 21, 2016Inventor: Fumitaka SEKI
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Patent number: 9257095Abstract: A display includes a backlight portion having at least one broad spectrum emitter (such as white) and at least one narrow spectrum emitter (such as red, green, and blue), a liquid crystal panel for displaying an image by spatial light modulation, and control electronics configured to receive input image data and output control signals to both the backlight portion and liquid crystal panel. The control electronics is configured to use color rendering capabilities of the liquid crystal panel under illumination from each of the emitter types individually to calculate a minimum power combination of emission from each emitter type required to display the input image data. The control electronics is further configured to modify the input image data according to the calculated minimum power combination of emitter powers so a resulting display of colors in the image data remains despite changing illumination conditions.Type: GrantFiled: June 30, 2014Date of Patent: February 9, 2016Assignee: Sharp Kabushiki KaishaInventors: Edward David Heywood-Lonsdale, Benjamin John Broughton, Emma Jayne Walton, John Patrick Nonweiler, Fumitaka Seki