Patents by Inventor Kohichi Takaku
Kohichi Takaku 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: 20150077637Abstract: The display device (1) which displays a video on a display section (7) includes a video processing circuit (2) and a backlight control circuit (3) for aperiodically changing at least any of a brightness and a contrast of the video, which is displayed on the display section (7), within a predetermined range during a predetermined time period.Type: ApplicationFiled: March 27, 2013Publication date: March 19, 2015Applicant: SHARP KABUSHIKI KAISHAInventors: Shigeki Taniguchi, Akira Koike, Mihoko Watanabe, Kohichi Takaku, Kohichi Hirata, Tsuyoshi Ohmori
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Patent number: 8487940Abstract: A display device (10) includes: a display section (23) which displays a picture; a user specifying section (130) which specifies a user viewing the display device; an image quality specifying section (170) which, in a case where the user specifying section (130) has specified a plurality of users, (i) obtains, from a recording section which records a plurality of setting values that correspond to user information for discriminating the plurality of users and are used to adjust an image quality, the plurality of setting values that correspond to the respective plurality of users thus specified and (ii) specifies, in accordance with the plurality of setting values thus obtained, a plurality of image qualities of a respective plurality of pictures to be displayed in the display section (23); and an image quality adjustment instructing section (150) which instructs an image quality adjusting section (22) to cause the display section (23) to display the plurality of pictures at the respective plurality of image quType: GrantFiled: March 25, 2011Date of Patent: July 16, 2013Assignee: Sharp Kabushiki KaishaInventors: Yoshinori Kohno, Kohichi Takaku, Kenji Watanabe, Tetsuo Ikeyama, Masahiko Takiguchi, Mihoko Watanabe, Tsuyoshi Ohmori, Hiroaki Okumoto
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Patent number: 8479249Abstract: A television receiver for content with which genre information is associated includes: a basic picture quality information receiving section which associates, with a single piece of genre information, a plurality of candidates for picture quality information regarding the content with which the genre information is associated, and which receives basic picture quality information indicating which one of the plurality of candidates is based on; a picture quality correction information creating section which receives picture quality correction information for further correcting the picture quality, and which creates, in accordance with the basic picture quality information and the picture quality correction information, information for correcting the picture quality; and a picture processing section which corrects the picture quality and which creates a picture to be displayed by a liquid crystal display device.Type: GrantFiled: September 22, 2010Date of Patent: July 2, 2013Assignee: Sharp Kabushiki KaishaInventors: Akira Koike, Kohichi Takaku, Takamasa Shimizu, Masahiko Takiguchi, Akiyoshi Ohya, Atsushi Ogawa, Koichi Hirata, Osamu Fujii
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Patent number: 8373644Abstract: In a video display apparatus, a backlight for illuminating a liquid crystal panel is segmented into a plurality of areas. A frequency distribution processing unit calculates a dark pixel amount from the frequency distribution of the gradation values of pixels in a video image. A backlight control unit calculates a lower limit of luminance in each area included in the backlight so that the lower limit increases as the dark pixel amount becomes smaller. The backlight control unit adjusts the luminance in each area individually according to the gradation values in each portion of the video image, and adjusts the luminance in an area where the luminance is less than the lower limit to the lower limit. The difference in luminance between the areas illuminating dark portions of the video image is decreased, and the occurrence of luminance blur resulting from the difference in luminance between the areas is reduced.Type: GrantFiled: June 24, 2009Date of Patent: February 12, 2013Assignee: Sharp Kabushiki KaishaInventors: Akira Koike, Kohichi Takaku, Yoshinori Kohno, Shinichi Nagashima, Hideto Yagisawa, Kodai Yamada
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Publication number: 20130010209Abstract: A display apparatus (10) of the present invention which includes a display section (25) for displaying an image and which is operated by an operation terminal, includes an executing section (12) for executing an operation of the display apparatus; a remote-controller-light receiving section (20) that receives a signal containing identification information for identifying a user using the operation terminal, the signal being sent from the operation terminal; and a recording section (22) in which a plurality of sets of associated information are recorded, each of the plurality of sets of associated information being information in which identification information and setting information used for execution of the operation by the executing means are associated with each other, the executing means (12) (i) acquiring setting information corresponding to the identification information received by the remote-controller-light receiving section from among the plurality of sets of associated information recorded on theType: ApplicationFiled: March 28, 2011Publication date: January 10, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Masahiko Takiguchi, Kohichi Takaku, Shingo Asai
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Publication number: 20130002695Abstract: A display device (10) includes: a display section (23) which displays a picture; a user specifying section (130) which specifies a user viewing the display device; an image quality specifying section (170) which, in a case where the user specifying section (130) has specified a plurality of users, (i) obtains, from a recording section which records a plurality of setting values that correspond to user information for discriminating the plurality of users and are used to adjust an image quality, the plurality of setting values that correspond to the respective plurality of users thus specified and (ii) specifies, in accordance with the plurality of setting values thus obtained, a plurality of image qualities of a respective plurality of pictures to be displayed in the display section (23); and an image quality adjustment instructing section (150) which instructs an image quality adjusting section (22) to cause the display section (23) to display the plurality of pictures at the respective plurality of image quType: ApplicationFiled: March 25, 2011Publication date: January 3, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Yoshinori Kohno, Kohichi Takaku, Kenji Watanabe, Tetsuo Ikeyama, Masahiko Takiguchi, Mihoko Watanabe, Tsuyoshi Ohmori, Hiroaki Okumoto
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Publication number: 20120233634Abstract: A television receiver for content with which genre information is associated includes: a basic picture quality information receiving section which associates, with a single piece of genre information, a plurality of candidates for picture quality information regarding the content with which the genre information is associated, and which receives basic picture quality information indicating which one of the plurality of candidates is based on; a picture quality correction information creating section which receives picture quality correction information for further correcting the picture quality, and which creates, in accordance with the basic picture quality information and the picture quality correction information, information for correcting the picture quality; and a picture processing section which corrects the picture quality and which creates a picture to be displayed by a liquid crystal display device.Type: ApplicationFiled: September 22, 2010Publication date: September 13, 2012Inventors: Akira Koike, Kohichi Takaku, Takamasa Shimizu, Masahiko Takiguchi, Akiyoshi Ohya, Atsushi Ogawa, Koichi Hirata, Osamu Fujii
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Publication number: 20120206493Abstract: A television receiver includes a genre identification section that identifies a genre of contents, a video processing section that displays the contents upon correcting the contents with an image quality parameter set in accordance with the identified genre in advance, a display control section that displays, while the contents is displayed, an adjustment item for adjusting a value of the image quality parameter, a parameter value adjustment section that adjusts the value of the image quality parameter based on entry by a user, and a parameter value changing section that changes the value of the image quality parameter, when the identified genre changes to another genre, to a value set in advance corresponding to a genre after the genre changes, and the parameter value changing section changes the value of the image quality parameter in a different period of time depending on whether or not the adjustment item is displayed.Type: ApplicationFiled: October 26, 2010Publication date: August 16, 2012Applicant: Sharp Kabushiki KaishaInventors: Akira Koike, Kohichi Takaku, Takamasa Shimizu, Masahiko Takiguchi, Akiyoshi Ohya, Atsushi Ogawa, Koichi Hirata, Osamu Fujii
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Publication number: 20100073276Abstract: In a video display apparatus, a backlight for illuminating a liquid crystal panel is segmented into a plurality of areas. A frequency distribution processing unit calculates a dark pixel amount from the frequency distribution of the gradation values of pixels in a video image. A backlight control unit calculates a lower limit of luminance in each area included in the backlight so that the lower limit increases as the dark pixel amount becomes smaller. The backlight control unit adjusts the luminance in each area individually according to the gradation values in each portion of the video image, and adjusts the luminance in an area where the luminance is less than the lower limit to the lower limit. The difference in luminance between the areas illuminating dark portions of the video image is decreased, and the occurrence of luminance blur resulting from the difference in luminance between the areas is reduced.Type: ApplicationFiled: June 24, 2009Publication date: March 25, 2010Applicant: SHARP KABUSHIKI KAISHAInventors: Akira Koike, Kohichi Takaku, Yoshinori Kohno, Shinichi Nagashima, Hideto Yagisawa, Kodai Yamada
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Publication number: 20090085862Abstract: A video displaying apparatus is provided that can change light-modulation rate of a backlight source in accordance with changes in a feature quantity of an input video signal based on a difference between times required for the light adaptation and the dark adaptation. A video displaying apparatus includes a liquid crystal panel 3 that displays an input video signal, a backlight source 9 that applies light to the liquid crystal panel 3, an APL detecting part 6 that detects APL of the input video signal, and a control microcomputer 8 that variably controls a change amount of emission luminance of the backlight source 9 for each predetermined time based on the detected APL. The control microcomputer 8 performs control such that the change amount for the APL of the input video signal changing to a higher quantity becomes greater than the change amount for the APL of the input video signal changing to a lower quantity.Type: ApplicationFiled: September 17, 2008Publication date: April 2, 2009Inventors: Kohichi Takaku, Tetsuo Ikeyama, Hideto Yagisawa