Patents by Inventor Tatsuo Watanabe

Tatsuo Watanabe 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).

  • Patent number: 10262569
    Abstract: In order to attain an object to provide a display device capable of suppressing electric power consumption as well as displaying an image with excellent quality, a control device includes a control information output section (36) for, in a case where an image determining section (35) determines that an image is a flickering image, supplying, to a grayscale level control section (80), grayscale level control information for causing the grayscale level control section to carry out control for increasing or lowering a grayscale level of a pixel in which flicker is easily recognizable.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: April 16, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tatsuo Watanabe, Kenji Maeda
  • Patent number: 10043464
    Abstract: Provided is a display device capable of suppressing electric power consumption as well as displaying an image with excellent quality. A host control section (30) in accordance with an aspect of the present invention includes: an image determining section (35) for determining whether or not an image has a characteristic of causing flicker to be easily recognizable; and a driving changing section (36) for, in a case where it is determined that the image has the characteristic of causing flicker to be easily recognizable, determining that (i) a display of the image is to be refreshed at a first refresh rate during a first period and (ii) the display of the image is to be refreshed at a different second refresh rate during a second period.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: August 7, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tatsuo Watanabe, Kenji Maeda
  • Patent number: 9947276
    Abstract: A liquid crystal display device (1) includes an adjustment setting section (11), a color component adjusting section (14), and a background color setting section (12). In a case where the adjustment setting section (11) carries out color component adjustment, (i) the background color setting section (12) carries out a second process of setting a background color and (ii) the color component adjusting section (14) carries out a first process of converting a grayscale level of a picture element. In a case where the adjustment setting section (11) does not carry out the color component adjustment, (i) the background color setting section (12) does not carry out the second process and (ii) the color component adjusting section (14) does not carry out the first process.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: April 17, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Sato, Kenji Maeda, Tatsuo Watanabe
  • Patent number: 9881566
    Abstract: An object of the present invention is to provide a display device which suppresses power consumption as well as displaying an image with excellent quality. A display device (1) in accordance with one aspect of the present invention includes a polarity determining section (35) for determining whether or not a first polarity in a drive vertical period immediately preceding a first term in which an image is not rewritten is the same as a second polarity in a pause vertical period which is a last pause vertical period before the second vertical period, and a refresh control section (34) for providing an additional vertical period in the first term in a case where the first polarity is the same as the second polarity.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: January 30, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tatsuo Watanabe, Junki Asai, Kenji Maeda
  • Patent number: 9824651
    Abstract: A display device disclosed includes a liquid crystal panel (6), and an image optimization circuit (4) for switching, in accordance with an update frequency of image data, between (i) a first mode in which a liquid crystal driver (7) is driven at a first driving frequency and (ii) a second mode in which the liquid crystal driver (7) is driven at a second driving frequency lower than the first driving frequency. The display device can therefore be used even in a case where a transmission path for image data is limited and optimally display high-resolution image data with reduced electric power consumption.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: November 21, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Umekida, Kenji Maeda, Tatsuo Watanabe, Masayuki Natsumi, Yuichi Sato, Kazuya Takayama
  • Patent number: 9823777
    Abstract: A touch panel driving device includes: a noise detection section (43) that detects the presence or absence of at least external noise of an input operation performed on a touch panel (30); and a liquid crystal drive parameter setting section (51) that, in a case where the presence of external noise has been detected by the noise detection section (43), executes a process for reducing the external noise by adjusting a cycle or duration of a 1H period.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: November 21, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kazuya Takayama, Kenji Maeda, Masayuki Natsumi, Tatsuo Watanabe, Yuichi Sato, Tetsuya Umekida
  • Patent number: 9697758
    Abstract: A display device that suppresses electric power consumption and displays an image with excellent quality is to be realized. A host control section (30) in accordance with an aspect of the present invention is a control device for a display device (1), said control device includes: an image determining section (35) for determining whether or not grayscale levels of a plurality of pixels in an image fall within a first range which consists of intermediate grayscale levels; and a driving changing section (36) for changing, according to a result of the determining carried out by the image determining section (35), a refresh rate of the display device (1).
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: July 4, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tatsuo Watanabe, Kenji Maeda, Tadashi Aoki, Daisuke Koyama
  • Patent number: 9402073
    Abstract: A display device includes control electronics and a pixilated 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: Grant
    Filed: August 8, 2013
    Date of Patent: July 26, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Benjamin John Broughton, Kenji Maeda, Tatsuo Watanabe
  • Patent number: 9330614
    Abstract: A method of processing image data for display on a display device having a multi-primary image display panel (2) comprises receiving image data constituting an image for display on the image display panel. In a first mode, signal voltages to be applied to sub-pixels of the image display panel are determined from the received image data and from a secondary data value for the pixel thereby to generate luminance variations perceivable at a first viewing position (5) but substantially not perceivable at a second viewing position (3).
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: May 3, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Benjamin John Broughton, Charlotte Wendy Michele Borgers, Paul Antony Gass, Scott Boham, Kenji Maeda, Tatsuo Watanabe
  • Publication number: 20150287352
    Abstract: A display device that suppresses electric power consumption and displays an image with excellent quality is to be realized. A host control section (30) in accordance with an aspect of the present invention is a control device for a display device (1), said control device includes: an image determining section (35) for determining whether or not grayscale levels of a plurality of pixels in an image fall within a first range which consists of intermediate grayscale levels; and a driving changing section (36) for changing, according to a result of the determining carried out by the image determining section (35), a refresh rate of the display device (1).
    Type: Application
    Filed: October 30, 2013
    Publication date: October 8, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Tatsuo Watanabe, Kenji Maeda, Tadashi Aoki, Daisuke Koyama
  • Publication number: 20150185956
    Abstract: A touch panel driving device includes: a noise detection section (43) that detects the presence or absence of at least external noise of an input operation performed on a touch panel (30); and a liquid crystal drive parameter setting section (51) that, in a case where the presence of external noise has been detected by the noise detection section (43), executes a process for reducing the external noise by adjusting a cycle or duration of a 1H period.
    Type: Application
    Filed: August 12, 2013
    Publication date: July 2, 2015
    Inventors: Kazuya Takayama, Kenji Maeda, Masayuki Natsumi, Tatsuo Watanabe, Yuichi Sato, Tetsuya Umekida
  • Patent number: 8836715
    Abstract: A method of processing image data for display by a display panel of a display device. The method comprises receiving main image pixel data representing a main image and side image pixel data representing a side image, and performing a mapping of the pixel data to signals used to drive the display panel. The mapping is arranged to produce an average on-axis luminance which is dependent mainly on the main image pixel data and an average off-axis luminance which is dependent at least to some extent on the side image pixel data. A compression of the main image pixel data is performed in advance of or at least partly incorporated into the mapping, the compression being performed at least partly in dependence upon the main image pixel data and at least partly in dependence upon how the off-axis luminance varies with pixel data input to the mapping.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: September 16, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Benjamin John Broughton, Andrew Kay, Marc Paul Servais, Paul Antony Gass, Masahiro Esashi, Kenji Maeda, Tatsuo Watanabe, Yuuichi Sato, Yoshimitsu Inamori, Takashi Yasumoto
  • Publication number: 20140210878
    Abstract: A method of processing image data for display on a display device having a multi-primary image display panel (2) comprises receiving image data constituting an image for display on the image display panel. In a first mode, signal voltages to be applied to sub-pixels of the image display panel are determined from the received image data and from a secondary data value for the pixel thereby to generate luminance variations perceivable at a first viewing position (5) but substantially not perceivable at a second viewing position (3).
    Type: Application
    Filed: October 25, 2012
    Publication date: July 31, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Benjamin John Broughton, Charlotte Wendy Michele Borgers, Paul Antony Gass, Scott Boham, Kenji Maeda, Tatsuo Watanabe
  • Publication number: 20140139915
    Abstract: An image display apparatus having sub-pixels of four colors is provided in which the resolution when an image is two-dimensionally displayed is not affected, and deterioration in the color balance of a three-dimensionally displayed image is suppressed. In the image display apparatus, the arrangement of a sub-pixel for displaying red for a left eye and a sub-pixel for displaying green for a right eye has been replaced with the arrangement of a sub-pixel (Lg1) for displaying green for the left eye and a sub-pixel (Rr1) for displaying red for the right eye. The arrangement of a sub-pixel for displaying blue for the left eye and a sub-pixel for displaying yellow for the right eye has been replaced with the arrangement of a sub-pixel (Lx1) for displaying yellow for the left eye and a sub-pixel (Rb1) for displaying blue for the right eye. Replacement with the sub-pixel and the sub-pixel and replacement with the sub-pixel and the sub-pixel are made for every other pixel.
    Type: Application
    Filed: July 6, 2012
    Publication date: May 22, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Sato, Kenji Maeda, Masayuki Natsumi, Tatsuo Watanabe, Kazuya Takayama, Takashi Yasumoto, Yoshimitsu Inamori
  • Patent number: 8629821
    Abstract: A display device is provided which includes a liquid crystal display panel including a plurality of pixels each having one or more sub-pixels; and control electronics configured to provide, in response to image data, signal voltages to the pixels in a first mode whereby an on-axis viewer and an off-axis viewer perceive substantially a same main image, and signal voltages to the pixels in a second mode whereby the on-axis viewer perceives the main image and the off-axis viewer perceives a side image different from the main image.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: January 14, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Charlotte Wendy Michele Borgers, Benjamin John Broughton, Kenji Maeda, Tatsuo Watanabe
  • Patent number: 8372981
    Abstract: Compounds represented by the following general formula: wherein Ag is an optionally substituted 5- to 14-membered heterocyclic group, etc.; Xg is —O—, —S—, etc.; Yg is an optionally substituted C6-14 aryl group, an optionally substituted 5- to 14-membered heterocyclic group, etc.; and Tg1 is a group represented by the following general formula: (wherein Eg is a single bond or —N(Rg2)—), Rg1 and Rg2 each independently represent a hydrogen atom, an optionally substituted C1-6 alkyl group, etc. and Zg represents a C1-8 alkyl group, a C3-8 alicyclic hydrocarbon group, a C6-14 aryl group, etc.), salts thereof or hydrates of the foregoing.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: February 12, 2013
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yasuhiro Funahashi, Masayuki Matsukura, Tatsuo Watanabe, Hiroshi Obaishi, Junji Matsui
  • Patent number: 8368727
    Abstract: A display device having a display panel for displaying an image by spatial light modulation includes a plurality of pixel groups, each pixel group including a first pixel having a first type of luminance against viewing angle response, and a second pixel having a second type of luminance against viewing angle response, wherein the first and second luminance against viewing angle responses are different from one another. The display device further includes a controller operatively coupled to each of the plurality of pixel groups, wherein the controller is configured to drive each of the plurality of pixel groups such that on average the plurality of pixel groups simultaneously provide a predetermined on-axis luminance and an predetermined off-axis luminance for a region of the image corresponding to each pixel group.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: February 5, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nathan James Smith, Benjamin John Broughton, Allan Evans, Andrew Kay, Kenji Maeda, Tatsuo Watanabe
  • Publication number: 20120176404
    Abstract: A method is provided of processing image data for display by a display panel of a display device. The method comprises receiving main image pixel data representing a main image and side image pixel data representing a side image, and performing a mapping of the pixel data to signals used to drive the display panel. The mapping is arranged to produce an average on-axis luminance which is dependent mainly on the main image pixel data and an average off-axis luminance which is dependent at least to some extent on the side image pixel data. A compression of the main image pixel data is performed in advance of or at least partly incorporated into the mapping, the compression being performed at least partly in dependence upon the main image pixel data and at least partly in dependence upon how the off-axis luminance varies with pixel data input to the mapping.
    Type: Application
    Filed: September 16, 2010
    Publication date: July 12, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Benjamin John Broughton, Andrew Kay, Marc Paul Servais, Paul Antony Gass, Masahiro Esashi, Kenji Maeda, Tatsuo Watanabe, Yuuichi Sato, Yoshimitsu Inamori, Takashi Yasumoto
  • Publication number: 20120169790
    Abstract: A method of operating a display device comprising a display panel comprises receiving main and side image pixel data respectively representing a main image (S1) and a side image (S2). For each of a plurality of pixel groups (S3), where each pixel group comprises at least one pixel of the main image pixel data and at least one spatially corresponding pixel of the side image pixel data, a predetermined mapping is performed (S4) using the pixel data of the pixel group as input. The mapping holds output pixel data for the input pixel data which is known to produce an average on-axis luminance with substantially no dependence on the side image pixel data of the group and an average off-axis luminance with substantially no dependence on the main image pixel data of the group. The signals used to drive the display panel are determined from the output pixel data (S5).
    Type: Application
    Filed: September 16, 2010
    Publication date: July 5, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Benjamin John Broughton, Meelis Lootus, Kenji Maeda, Tatsuo Watanabe, Yoshimitsu Inamori, Takashi Yasumoto
  • Patent number: 7994159
    Abstract: It was discovered that a compound represented by the general formula (I) shows strong c-Kit kinase inhibitory activity, and it inhibits proliferation of c-Kit kinase activated-cancer cells in vitro and in vivo. A novel anticancer agent showing c-Kit kinase inhibitory activity was discovered. The general formula (I): (wherein R1 represents methyl etc., R2 represents cyano etc., R3 represents hydrogen etc., R4 represents hydrogen etc.).
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: August 9, 2011
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yuji Yamamoto, Tatsuo Watanabe, Masayuki Okada, Akihiko Tsuruoka