Patents by Inventor Michiyuki Sugino
Michiyuki Sugino 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: 20150109346Abstract: A backlight control circuit (3) controls a blinking frequency of light emitted by a backlight (6), in accordance with brightness of a video to be displayed on a display section (7), for the purpose of reproducing, with a simpler process, a feeling of shutter which is felt when a film movie is projected by a projector, without causing a user to feel a feeling of discomfort.Type: ApplicationFiled: March 27, 2013Publication date: April 23, 2015Applicant: SHARP KABUSHIKI KAISHAInventors: Shigeki Taniguchi, Michiyuki Sugino, Akira Koike, Mihoko Watanabe
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Patent number: 8451209Abstract: A liquid crystal display device in which a frame of the image signal to be displayed is written into a liquid crystal display panel while a backlight is activated intermittently within one frame period so as to prevent blur injury arising when displaying motion pictures includes: sections and for variably controlling the illumination duration of the backlight based on the detected type of the image content to be displayed. This configuration makes it possible to appropriately control the image quality degradation caused by blur injury, stroboscopic effect and flickering, hence realize total image quality improvement.Type: GrantFiled: December 8, 2003Date of Patent: May 28, 2013Assignee: Sharp Kabushiki KaishaInventors: Michiyuki Sugino, Takashi Yoshii, Toshiyuki Fujine
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Patent number: 8269802Abstract: In general, when a user views an image displayed on a display apparatus, visual environments, such as ambient brightness, a distance from the user to the display apparatus and so on, may disadvantageously cause the image displayed on the display apparatus to become difficult to view. Moreover, it is complicated and troublesome for the user to enter information of ambient light amount and others when setting a picture quality. An image display apparatus holds both question constituent information related to visual environments and choice information serving as answers to questions constituted by the question constituent information, and further holds a plurality of picture quality control rules suitable for visual environments assumed in accordance with the choice information serving as the answers.Type: GrantFiled: March 11, 2008Date of Patent: September 18, 2012Assignee: Sharp Kabushiki KaishaInventors: Toshiyuki Fujine, Michiyuki Sugino, Takashi Kanda, Eishi Oda, Masahiro Okui
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Patent number: 7961199Abstract: Embodiments of the present invention comprise systems, methods and devices for adjusting image code values in conjunction with display light source illumination levels for enhanced image display.Type: GrantFiled: September 12, 2005Date of Patent: June 14, 2011Assignee: Sharp Laboratories of America, Inc.Inventors: Louis Joseph Kerofsky, Scott J. Daly, Michiyuki Sugino
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Publication number: 20100182350Abstract: In general, when a user views an image displayed on a display apparatus, visual environments, such as ambient brightness, a distance from the user to the display apparatus and so on, may disadvantageously cause the image displayed on the display apparatus to become difficult to view. Moreover, it is complicated and troublesome for the user to enter information of ambient light amount and others when setting a picture quality. An image display apparatus holds both question constituent information related to visual environments and choice information serving as answers to questions constituted by the question constituent information, and further holds a plurality of picture quality control rules suitable for visual environments assumed in accordance with the choice information serving as the answers.Type: ApplicationFiled: March 11, 2008Publication date: July 22, 2010Applicant: SHARP KABUSHIKI KAISHAInventors: Toshiyuki Fujine, Michiyuki Sugino, Takashi Kanda, Eishi Oda, Masahiro Okui
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Patent number: 7592995Abstract: An emphasis converter 52 compares the image data of the current vertical period with the image data of the previous vertical period and controls the input image data to a liquid crystal display panel 4 based on the emphasis conversion parameters stored in tables of ROMs 3a to 3c so as to achieve accelerated drive. A microcomputer 38 is able to realize stable control of selecting emphasis conversion parameters by adding hysteresis to the detected temperature from a thermistor 37 even when the detected temperature fluctuates up and down crossing the temperature threshold.Type: GrantFiled: November 11, 2002Date of Patent: September 22, 2009Assignee: Sharp Kabushiki KaishaInventors: Michiyuki Sugino, Yuji Kikuchi, Toshihiko Osada, Takashi Yoshii, Makoto Shiomi
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Patent number: 7427976Abstract: The device includes: a write-gray scale level determining means (2), (3) for determining the write-gray scale level data for input image data that compensates the optical response characteristic of a liquid crystal display panel (4), in accordance with, at least, the combination of the gray scale level transitions from a previous vertical period to a current vertical display period; and an achievable gray scale level determining means (5), (6) for generating the achievable gray scale level data for input image data after a lapse of one vertical display period of the liquid crystal display panel, in accordance with, at least, the combination of the gray scale level transitions from one vertical display period to the next.Type: GrantFiled: May 16, 2003Date of Patent: September 23, 2008Assignee: Sharp Kabushiki KaishaInventor: Michiyuki Sugino
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Patent number: 7397457Abstract: An edge detecting circuit detects whether a particular pixel belongs to an edge by determining whether the differential value of the pixel from the neighboring pixel is equal to or greater than a threshold. Based on the detection result, an emphasis converter stops OS drive when the image of a pixel area is regarded as an edge image in accordance with the detected result of the edge detecting circuit and implements OS drive when the image of a pixel area is not regarded as an edge image. In this way, the edge detecting circuit detects edge portions of the input video, whereby OS drive in the emphasis converter can be controlled so as to be turned on and off.Type: GrantFiled: November 11, 2002Date of Patent: July 8, 2008Assignee: Sharp Kabushiki KaishaInventors: Michiyuki Sugino, Yuji Kikuchi, Toshihiko Osada, Takashi Yoshii, Makoto Shiomi
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Publication number: 20080117153Abstract: A display apparatus is provided which can achieve suitable screen display luminance depending on video content as well as can reduce power consumption sufficiently. A liquid crystal display apparatus includes a liquid crystal panel that displays video and a light source that illuminates the liquid crystal panel, and the emission luminance of the light source is controlled depending on the genre of the video displayed on the liquid crystal panel. The emission luminance of the light source is adjusted while maintaining approximately constant white chromaticity (white balance).Type: ApplicationFiled: January 7, 2008Publication date: May 22, 2008Inventors: Toshiyuki Fujine, Seiji Kohashikawa, Michiyuki Sugino, Ryuichi Niiyama
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Patent number: 7190340Abstract: A liquid crystal display is constructed so that the representative gray scale levels are extracted and set at close intervals in the gray scale transition areas where the optical response characteristics of the LCD panel are poor while the representative gray scale levels are set at dispersed intervals in the gray scale transition area where the optical response characteristics of the LCD panel is relatively good, to thereby allot the selected representative gray scale levels to the addresses of the OS table. A write gray scale determining portion, referring to compensation signal data values stored in correspondence with the combinations of the respective representative gray scale levels, determines the write gray scale data to the LCD panel, whereby the optical response characteristics of the LCD panel can be compensated with high precision.Type: GrantFiled: July 21, 2003Date of Patent: March 13, 2007Assignee: Sharp Kabushiki KaishaInventor: Michiyuki Sugino
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Patent number: 7170477Abstract: When reproducing an image by a display apparatus having a plurality of pixels, in an average signal level operation circuit is performed an operation to obtain an average signal level which is an average level of all the pixel signals in a picture signal including a pixel signal representing information of a pixel, then, according to this average signal level, in an input signal-output brightness property setting circuit is set an input signal-output brightness property representing variations in brightness of a pixel with respect to a level of the pixel signal, then, the compensation of the picture signal is performed either to satisfy the input signal-output brightness property thus set in a signal compensation section or to allow variations in maximum output brightness of a pixel of the display apparatus according to the average signal level in a maximum output brightness adjustment circuit, so as to output the picture signal subject to compensation to the display apparatus.Type: GrantFiled: April 13, 2001Date of Patent: January 30, 2007Assignee: Sharp Kabushiki KaishaInventors: Shigetsugu Okamoto, Michiyuki Sugino
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Patent number: 7145625Abstract: A liquid crystal display device capable of presenting to a viewer a high-quality video from the beginning of viewing the video on a liquid crystal display panel by heating the panel from a specified time earlier than a time preset to start the viewing. A liquid crystal display device for displaying a video on a liquid crystal display panel having a liquid crystal layer and electrodes for applying a data voltage to the liquid crystal layer is further provided with an inputting means for inputting time information for reserving viewing a video program and a heating means for warming the liquid crystal display panel for a specified period before the time preset to start the viewing. The period of warming the liquid crystal display panel is determined based on a working ambient temperature.Type: GrantFiled: June 2, 2003Date of Patent: December 5, 2006Assignee: Sharp Kabushiki KaishaInventors: Michiyuki Sugino, Takashi Yoshii
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Publication number: 20060221260Abstract: A display apparatus is provided which can achieve suitable screen display luminance depending on video content as well as can reduce power consumption sufficiently. A liquid crystal display apparatus includes a liquid crystal panel that displays video and a light source that illuminates the liquid crystal panel, and the emission luminance of the light source is controlled depending on the genre of the video displayed on the liquid crystal panel. The emission luminance of the light source is adjusted while maintaining approximately constant white chromaticity (white balance).Type: ApplicationFiled: March 27, 2006Publication date: October 5, 2006Inventors: Toshiyuki Fujine, Seiji Kohashikawa, Michiyuki Sugino, Ryuichi Niiyama
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Publication number: 20060119612Abstract: Embodiments of the present invention comprise systems, methods and devices for adjusting image code values in conjunction with display light source illumination levels for enhanced image display.Type: ApplicationFiled: September 12, 2005Publication date: June 8, 2006Inventors: Louis Kerofsky, Scott Daly, Michiyuki Sugino
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Publication number: 20050259064Abstract: A liquid crystal display device in which a frame of the image signal to be displayed is written into a liquid crystal display panel while a backlight is activated intermittently within one frame period so as to prevent blur injury arising when displaying motion pictures includes: sections and for variably controlling the illumination duration of the backlight based on the detected type of the image content to be displayed. This configuration makes it possible to appropriately control the image quality degradation caused by blur injury, stroboscopic effect and flickering, hence realize total image quality improvement.Type: ApplicationFiled: December 8, 2003Publication date: November 24, 2005Inventors: Michiyuki Sugino, Takashi Yoshii, Toshiyuki Fujine
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Publication number: 20050162359Abstract: The device includes: a write-gray scale level determining means (2), (3) for determining the write-gray scale level data for input image data that compensates the optical response characteristic of a liquid crystal display panel (4), in accordance with, at least, the combination of the gray scale level transitions from a previous vertical period to a current vertical display period; and an achievable gray scale level determining means (5), (6) for generating the achievable gray scale level data for input image data after a lapse of one vertical display period of the liquid crystal display panel, in accordance with, at least, the combination of the gray scale level transitions from one vertical display period to the next.Type: ApplicationFiled: May 16, 2003Publication date: July 28, 2005Inventor: Michiyuki Sugino
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Publication number: 20040263495Abstract: An edge detecting circuit detects whether a particular pixel belongs to an edge by determining whether the differential value of the pixel from the neighboring pixel is equal to or greater than a threshold. Based on the detection result, an emphasis converter stops OS drive when the image of a pixel area is regarded as an edge image in accordance with the detected result of the edge detecting circuit and implements OS drive when the image of a pixel area is not regarded as an edge image. In this way, the edge detecting circuit detects edge portions of the input video, whereby OS drive in the emphasis converter can be controlled so as to be turned on and off.Type: ApplicationFiled: March 19, 2004Publication date: December 30, 2004Inventors: Michiyuki Sugino, Yuji Kikuchi, Toshihiko Osada, Takashi Toshii, Makoto Shiomi
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Publication number: 20040201564Abstract: An emphasis converter 52 compares the image data of the current vertical period with the image data of the previous vertical period and controls the input image data to a liquid crystal display panel 4 based on the emphasis conversion parameters stored in tables of ROMs 3a to 3c so as to achieve accelerated drive. A microcomputer 38 is able to realize stable control of selecting emphasis conversion parameters by adding hysteresis to the detected temperature from a thermistor 37 even when the detected temperature fluctuates up and down crossing the temperature threshold.Type: ApplicationFiled: March 2, 2004Publication date: October 14, 2004Inventors: Michiyuki Sugino, Yuji Kikuchi, Toshihiko Osaka, Takashi Yoshii, Makoto Shiomi
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Publication number: 20040041767Abstract: A liquid crystal display is constructed so that the representative gray scale levels are extracted and set at close intervals in the gray scale transition areas where the optical response characteristics of the LCD panel are poor while the representative gray scale levels are set at dispersed intervals in the gray scale transition area where the optical response characteristics of the LCD panel is relatively good, to thereby allot the selected representative gray scale levels to the addresses of the OS table. A write gray scale determining portion, referring to compensation signal data values stored in correspondence with the combinations of the respective representative gray scale levels, determines the write gray scale data to the LCD panel, whereby the optical response characteristics of the LCD panel can be compensated with high precision.Type: ApplicationFiled: July 21, 2003Publication date: March 4, 2004Inventor: Michiyuki Sugino
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Publication number: 20030231157Abstract: A liquid crystal display device capable of presenting to a viewer a high-quality video from the beginning of viewing the video on a liquid crystal display panel by heating the panel from a specified time earlier than a time preset to start the viewing. A liquid crystal display device for displaying a video on a liquid crystal display panel having a liquid crystal layer and electrodes for applying a data voltage to the liquid crystal layer is further provided with an inputting means for inputting time information for reserving viewing a video program and a heating means for warming the liquid crystal display panel for a specified period before the time preset to start the viewing. The period of warming the liquid crystal display panel is determined based on a working ambient temperature.Type: ApplicationFiled: June 2, 2003Publication date: December 18, 2003Inventors: Michiyuki Sugino, Takashi Yoshii