Patents by Inventor Yuhji Tanaka
Yuhji Tanaka 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: 20230243703Abstract: An electromagnetic wave sensor device according to an aspect of the disclosure, comprising: a first sensor configured to perform an output in accordance with electromagnetic waves absorbed by a first quantum dot, an upper limit wavelength of electromagnetic waves absorbable by the first quantum dot being a first wavelength, a second sensor configured to perform an output in accordance with electromagnetic waves absorbed by a second quantum dot different from the first quantum dot, an upper limit wavelength of electromagnetic waves absorbable by the second quantum dot being a second wavelength longer than the first wavelength; and a calculation unit configured to calculate a difference between the output of the second sensor and the output of the first sensor.Type: ApplicationFiled: June 30, 2020Publication date: August 3, 2023Inventor: Yuhji TANAKA
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Publication number: 20150304572Abstract: A division circuit 11 divides input frames included in an input video Vi into plural pieces of partial data that are not superimposed with each other and outputs one piece of partial data for one input frame while switching selection of the partial data. A memory control circuit 14 writes the partial data output from the division circuit 11 in a frame memory 15, and reads a reconstruction frame that is configured by plural pieces of partial data based on a plurality of input frames that are different from each other and has a same size as the input frames from the frame memory 15. A composition circuit 19 composites the reconstruction frame read from the frame memory 15, and obtains an output video Vo that includes a composited frame. Thereby, an amount of access to the frame memory is reduced without deteriorating image quality significantly.Type: ApplicationFiled: October 29, 2013Publication date: October 22, 2015Inventors: Yuhji TANAKA, Hiroshi MIKAMI
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Patent number: 9123280Abstract: When first and second region-processing sections (510, 520) calculate in parallel backlight luminances required for an input image halved by a regional image division section (505) included in an area-active drive processing section (5) of a liquid crystal display device, LED data (Db1, Db2) are exchanged for each other, allowing reference to backlight luminances not calculated for one region but calculated for the other region. As a result, when an area is illuminated by surrounding backlight sources, the actual display luminance can be calculated correctly. Thus, pixel display can be provided with correct display tones across the entire screen, thereby preventing a reduction in display quality.Type: GrantFiled: May 13, 2011Date of Patent: September 1, 2015Assignee: Sharp Kabushiki KaishaInventor: Yuhji Tanaka
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Patent number: 9093033Abstract: A display position information acquisition section of an image display device outputs display position identification data for identifying a display position on the screen. An LED output value calculation section divides an input image into a plurality of areas and obtains LED data which is data for emission luminances of LEDs in the areas. At this time, emission luminances of LEDs in a non-display area are set to 0 on the basis of the display position identification data. A display luminance calculation section obtains display luminances of the areas based upon the emission luminances. A partial display correction filter generation section generates a partial display correction filter having correction data for each pixel stored therein, based upon the display position identification data. An LCD data calculation section obtains liquid crystal data based upon the input image, the display luminances, and the correction data.Type: GrantFiled: March 31, 2010Date of Patent: July 28, 2015Assignee: Sharp Kabushiki KaishaInventors: Tamotsu Sakai, Yuhji Tanaka
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Publication number: 20140198104Abstract: A luminance gradient calculating unit of a stereoscopic image generating device calculates luminance gradient indicating amount in change of luminance between a pixel of interest and an adjacent pixel, a right eye image generating unit corrects luminance of the pixel with that correction amount of the same sign as the luminance gradient such that the greater the absolute value of luminance gradient or the smaller the distance is the greater the luminance is. The left eye image generating unit performs correction of the luminance of the pixel with a correction amount of the opposite sign of the luminance gradient. This enables stereoscopy due to difference generated in luminance distribution between the left eye image and right eye image, and also the position of pixel is not changed and thus can be kept from appearing in double or not readily appearing in double.Type: ApplicationFiled: August 29, 2012Publication date: July 17, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Yuhji Tanaka
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Publication number: 20140192150Abstract: An image processing device (10a) that receives a plurality of individual images including at least two images that form a stereoscopic image and generates a display image displaying the plurality of input individual images simultaneously on a display unit. The image processing device includes an image conversion unit (111) that converts at least one image among the input images that form the stereoscopic image into a planar image, and an image generation unit (151) that generates the display image by synthesizing the planar image that has been converted by the image conversion unit (111) and an image among the plurality of input images that has not been converted into a planer image by the image conversion unit (111).Type: ApplicationFiled: May 30, 2012Publication date: July 10, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Yuhji Tanaka
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Publication number: 20130147797Abstract: In a three-dimensional image generating apparatus, a luminance gradient calculating portion calculates a luminance gradient, which indicates the amount of change in luminance between a pixel of interest and a pixel adjacent thereto, a right-eye image generating portion corrects a pixel luminance in a correction amount having the same sign as the luminance gradient, and a left-eye image generating portion corrects a pixel luminance in a correction amount having the opposite sign to the luminance gradient. As a result, there is a difference in luminance distribution between left-eye and right-eye images, so that stereoscopic viewing is made possible without calculating depth information, and there is no change in pixel positions, so that the images do not appear doubled or they are resistant to appearing doubled.Type: ApplicationFiled: June 1, 2011Publication date: June 13, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Yuhji Tanaka
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Publication number: 20130093802Abstract: When first and second region-processing sections (510, 520) calculate in parallel backlight luminances required for an input image halved by a regional image division section (505) included in an area-active drive processing section (5) of a liquid crystal display device, LED data (Db1, Db2) are exchanged for each other, allowing reference to backlight luminances not calculated for one region but calculated for the other region. As a result, when an area is illuminated by surrounding backlight sources, the actual display luminance can be calculated correctly. Thus, pixel display can be provided with correct display tones across the entire screen, thereby preventing a reduction in display quality.Type: ApplicationFiled: May 13, 2011Publication date: April 18, 2013Inventor: Yuhji Tanaka
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Publication number: 20120319936Abstract: Disclosed is a display device capable of changing a video image display area of high significance so as to be brighter than a video image display area of low significance, from among a plurality of video images. The display device comprises a liquid crystal display panel (1), a backlight unit (2), and a video image compositing unit (7) that generates composite video image data and backlight data. The backlight data is generated corresponding to the significance of the plurality of video images, and by the brightness of the backlight being adjusted for each display area on the basis of the backlight data, the video image display area of high significance is made brighter than the video image display area of low significance.Type: ApplicationFiled: January 13, 2011Publication date: December 20, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Yuhji Tanaka, Shigeki Imai
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Publication number: 20120139974Abstract: A display position information acquisition section of an image display device outputs display position identification data for identifying a display position on the screen. An LED output value calculation section divides an input image into a plurality of areas and obtains LED data which is data for emission luminances of LEDs in the areas. At this time, emission luminances of LEDs in a non-display area are set to 0 on the basis of the display position identification data. A display luminance calculation section obtains display luminances of the areas based upon the emission luminances. A partial display correction filter generation section generates a partial display correction filter having correction data for each pixel stored therein, based upon the display position identification data. An LCD data calculation section obtains liquid crystal data based upon the input image, the display luminances, and the correction data.Type: ApplicationFiled: March 31, 2010Publication date: June 7, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Tamotsu Sakai, Yuhji Tanaka
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Publication number: 20120140118Abstract: A signal synthesis section synthesizes a first input image signal and a second input image signal such that frames of a first input effective signal and of a second input effective signal, overlap between the frames being long, are synthesized.Type: ApplicationFiled: April 28, 2010Publication date: June 7, 2012Applicant: SHARP KABUSHIKI KAISHAInventor: Yuhji Tanaka
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Publication number: 20110267383Abstract: An object of at least one embodiment of the present invention is to provide a liquid crystal display device and a driving method thereof, in which a contour of an image is clearly recognized during movie display even in a case where a backlight is turned on and off so as to change intervals at which the backlight turns on. In at least one embodiment, the liquid crystal display device includes a liquid crystal panel and the backlight that irradiates the liquid crystal panel with light, one frame period including a turn-on period during which the backlight turns on and a turn-off period during which the backlight turns off, luminance being changed by changing turn-on intervals of the backlight, the turn-on intervals of the backlight being changed by changing lengths of the turn-on period and the turn-off period.Type: ApplicationFiled: February 9, 2010Publication date: November 3, 2011Applicant: Sharp Kabushiki KaishaInventors: Hirofumi Murakami, Yuhji Tanaka, Shinji Horino