Patents by Inventor Masafumi Ueno

Masafumi Ueno 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: 8897569
    Abstract: The disclosed image enlargement device is provided with: an image enlargement filter (1) that enlarges an input image, generating a first enlarged image; a first wavelet transformation unit (2) that performs a wavelet transformation on the first enlarged image; a second wavelet transformation unit (3) that performs a wavelet transformation on the first enlarged image; and an accentuation processing unit (6, 7, 8, 10) that performs an accentuation process using a first edge signal (EDGE_CDF9/7), generated from the output of the first wavelet transformation unit, and a second edge signal (EDGE_Harr), generated from the output of the second wavelet transformation unit. The first wavelet transformation unit and the second wavelet transformation unit perform different wavelet transformations.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: November 25, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Xiaomang Zhang, Masafumi Ueno, Yasuhiro Ohki
  • Patent number: 8791932
    Abstract: A display device includes: an LED control section (4) for carrying out control in which (i) an output luminance of an LED (10) whose measured luminance is deviated from a reference luminance or (ii) output luminances of peripheral LEDs (10) which are provided around the LED (10) is or are corrected, respectively, by using control information of the plurality of LEDs, which control information contains (a) information on measured luminances of the plurality of LEDs, the information being obtained by the plurality of photosensors (11) and (b) positional information of the plurality of LEDs, the positional information being obtained by the plurality of photosensors (11), and a liquid crystal display control section (3) for controlling, based on (i) video signals which have been subjected to the video signal process and are supplied from a video signal processing section (2) and (ii) the control information supplied from the LED control section (4), (a) levels of video signals to be supplied to pixels correspondi
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: July 29, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Ueno, Hiroyuki Furukawa, Kazuyoshi Yoshiyama, Yasuhiro Ohki, Kenji Takase, Takashi Ishizumi
  • Patent number: 8780267
    Abstract: It is an object to prevent the image quality deterioration of a moving image likely to include a plurality of the same consecutive images such as a movie video and an animation video due to the motion-compensated frame rate conversion (FRC) processing. An image displaying device is provided with an FRC portion (10) for converting the number of frames in an input image signal by interpolating an image signal to which a motion compensation processing has been given between the frames in the input image signal, a genre determining portion (14) for determining whether the input image signal is a predetermined genre, and a controlling portion (15).
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: July 15, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Mori, Seiji Kohashikawa, Hiroyuki Furukawa, Masafumi Ueno, Kenichiroh Yamamoto, Takashi Yoshii
  • Publication number: 20130300827
    Abstract: A motion vector detecting unit 12 detects a motion vector V1 of an input image X(n), and an interpolating vector generating unit 13 generates an interpolating vector V2 in accordance with the motion vector V1. In a two-dimensional display mode, the input image X(n) is output as an original image, and an image generating unit 16 generates an interpolated image X(n+0.5) in accordance with the interpolating vector V2. In a three-dimensional display mode, the input image X(n) is output as a left-eye image L(n), and the image generating unit 16 generates a right-eye image R(n+0.5) in accordance with a sum of the interpolating vector V2 and a parallax vector V3 input from the outside. The image generating unit is shared in a frame rate conversion process and a three-dimensional conversion process, and the right-eye image is generated at the same location as the interpolated image in time axis. In this way, image quality is increased when a moving image is displayed with a small amount of circuit.
    Type: Application
    Filed: January 12, 2012
    Publication date: November 14, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Ueno, Xiaomang Zhang, Yasuhiro Ohki
  • Patent number: 8537276
    Abstract: Deterioration in image quality of a moving image obtained by special reproduction caused by frame rate conversion (FRC) processing of a motion compensation type is prevented. An image displaying device includes an FRC portion 10 that converts the number of frames of the input image signal by interpolating an image signal to which motion compensation processing has been performed between frames of an input image signal, a special reproduction determining portion 14 that determines whether or not the input image signal is an image signal relating to a predetermined genre, and a controlling portion 15. The FRC portion 10 includes a motion vector detecting portion lie that detects a motion vector between frames of the input image signal, an interpolation vector evaluating portion 11f that assigns an interpolation vector between frames based on the motion vector information, and an interpolation frame generating portion 12d that generates an interpolation frame from the interpolation vector.
    Type: Grant
    Filed: February 19, 2007
    Date of Patent: September 17, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Ueno, Kenichiroh Yamamoto, Takashi Yoshii, Hiroyuki Furukawa
  • Patent number: 8462266
    Abstract: An image processing device and method, and an image display device and method which realizes a high-definition displayed video by reducing motion blur caused by a holding-type display system and reducing motion blurs of the displayed video caused by the time integration effect of an image sensor while suppressing deterioration of an image. The image display device includes a motion vector detection section (101) which detects a motion vector in each predetermined region between the frames of an inputted image signal, and an edge emphasis part (2) which emphasizes the high-frequency component of the inputted image signal and an interpolated image signal generated by an FRC part (100) according to the motion amount of the inputted image signal detected by the motion vector detection section (101). This compensates the high-frequency component attenuated by the time integration effect of the image sensor to reduce the apparent motion blurs to improve the sharpness of the displayed image.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: June 11, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Ueno, Kenichiroh Yamamoto, Takashi Yoshii, Hiroyuki Furukawa, Yasuhiro Yoshida, Ikuko Tsubaki
  • Patent number: 8446526
    Abstract: It is an object to suppress a disturbance or distortion of an insertion image in the vicinity of an effective image edge portion such as an edge portion of a screen or the like caused by a moving compensation type frame rate conversion (FRC). An image processing device is provided with a moving vector detection circuit (2) for detecting a moving vector of an input image signal, an effective image edge portion judging circuit (5) for judging if a moving vector detecting position is adjacent to the effective image edge portion, and a vector switching circuit (3) for switching a vector in accordance with the judging result. The vector switching circuit (3) fixes the vector to 0 vector in the case where the moving vector detecting position is adjacent to the effective image edge portion. In the case where the position is in other region, the vector switching circuit (3) outputs the moving vector detected by the moving vector detection circuit (2) to an insertion vector allocation circuit (4).
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: May 21, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Furukawa, Kenichiroh Yamamoto, Takashi Yoshii, Masafumi Ueno, Yasuhiro Yoshida
  • Publication number: 20130069922
    Abstract: A three-dimensional noise reduction processing unit perform as a recursive noise reduction process to an input image X(n), using a motion vector MV detected by a motion vector detecting unit. A three-dimensional noise reduced image B(n) is output as a corrected original image Y(n). A two-dimensional noise reduction filter processing unit applies a two-dimensional noise reduction filter to the input image X(n). Using the motion vector MV, an interpolated image generating unit generates an interpolated image Y(n+0.5) based on a two-dimensional noise reduced image A(n). Significant degradation of an interpolated image due to false detection of a motion vector is prevented by generating the interpolated image based on the image resulted without performing the recursive noise reduction process.
    Type: Application
    Filed: April 4, 2011
    Publication date: March 21, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Ueno, Xiaomang Zhang, Yasuhiro Ohki
  • Patent number: 8395700
    Abstract: The quality of moving picture image with a large moving amount is prevented from deterioration due to moving compensation type frame rate conversion (FRC) processing. The image display device is comprised of an FRC unit (10) that interpolates an image signal subjected to moving compensation processing between frames so as to convert the number of frames of the input image signal, a moving amount judging unit (14) that judges whether a moving amount of the input image signal between the frames is larger than a predetermined value or not, and a control unit (15). The FRC unit (10) is provided with a moving vector detecting unit (11e) that detects a moving vector between the frames of the input image signal, an interpolation vector evaluating unit (11f) that allocates an interpolation vector between the frames on the basis of the moving vector information and an interpolation frame generating unit (12d) that generates an interpolation frame from the interpolation vector.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: March 12, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Ueno, Kenichiroh Yamamoto, Takashi Yoshii, Hiroyuki Furukawa, Yasuhiro Yoshida
  • Patent number: 8358373
    Abstract: In an image displaying device provided with a frame rate conversion (FRC) portion, the image quality deterioration in a moving image likely to include a plurality of the same consecutive images due to a FRC processing is prevented. The FRC portion (100) of the image displaying device includes a motion vector detecting portion (101) that detects motion vector information from an input image signal, an interpolation frame generating portion (106) that generates interpolation frames based on the motion vector information obtained by the motion vector detecting portion (101) and a same image detecting portion (105) that detects a case where the same images continue in the input image signal.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: January 22, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenichiroh Yamamoto, Hiroyuki Furukawa, Masafumi Ueno, Yasuhiro Yoshida
  • Publication number: 20120321194
    Abstract: The disclosed image enlargement device is provided with: an image enlargement filter (1) that enlarges an input image, generating a first enlarged image; a first wavelet transformation unit (2) that performs a wavelet transformation on the first enlarged image; a second wavelet transformation unit (3) that performs a wavelet transformation on the first enlarged image; and an accentuation processing unit (6, 7, 8, 10) that performs an accentuation process using a first edge signal (EDGE_CDF9/7), generated from the output of the first wavelet transformation unit, and a second edge signal (EDGE_Harr), generated from the output of the second wavelet transformation unit. The first wavelet transformation unit and the second wavelet transformation unit perform different wavelet transformations.
    Type: Application
    Filed: November 9, 2010
    Publication date: December 20, 2012
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Xiaomang Zhang, Masafumi Ueno, Yasuhiro Ohki
  • Patent number: 8325272
    Abstract: It is an object to prevent the image quality deterioration of a moving image likely to include a plurality of the same consecutive images such as 2-3 or 2-2 pulldown video due to the motion-compensated frame rate conversion (FRC) processing. An image displaying device is provided with an FRC portion (10) for converting the number of frames in an input image signal by interpolating an image signal to which a motion compensation processing has been given between the frames in the input image signal, a pulldown detecting portion (14) for detecting whether the input image signal is an image signal to which pulldown conversion has been performed, and a controlling portion (15).
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: December 4, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Mori, Seiji Kohashikawa, Hiroyuki Furukawa, Masafumi Ueno, Kenichiroh Yamamoto, Takashi Yoshii
  • Patent number: 8319898
    Abstract: An image processing device, method, an image display device and method which can obtain a high-definition display image by properly controlling processing of reducing the blur of a displayed image caused by the time integration effect of an image sensor. The image display device comprises a motion detection part (1) which detects the moving amount of an input image signal, and an edge emphasis part (2) which subjects the input image signal to edge emphasis processing, and the image display device increases an edge emphasis degree of edge emphasis processing to an area where the moving amount of the input image signal is large.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: November 27, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Ueno, Kenichiroh Yamamoto, Takashi Yoshii, Hiroyuki Furukawa, Yasuhiro Yoshida, Ikuko Tsubaki
  • Patent number: 8228427
    Abstract: It is an object to prevent the image quality deterioration of a moving image likely to include a plurality of the same consecutive images such as a movie video image or a CG video image due to the motion-compensated frame rate conversion (FRC) processing. An image displaying device is provided with an FRC portion (10) for converting the number of frames in an input image signal by interpolating an image signal to which a motion compensation processing has been given between the frames in the input image signal, a controlling portion (14) for controlling each portion according to an image tone mode selected by a user.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: July 24, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Mori, Seiji Kohashikawa, Hiroyuki Furukawa, Masafumi Ueno, Kenichiroh Yamamoto, Takashi Yoshii
  • Publication number: 20120113164
    Abstract: A liquid crystal data calculation section forms, on the basis of input image data, liquid crystal data to display an image on a liquid crystal panel. In at least one example embodiment, an LED data calculation section forms, on the basis of the input image data, LED data for adjusting an amount of light of an LED backlight. An LED control section controls an amount of an output current of an LED power source on the basis of the LED data, and includes a protection function of limiting the amount of the output current so that the amount of the output current does not exceed a predetermined upper limit. In a case where the amount of the output current of the LED power source is reduced to the upper limit by the LED control section, a liquid crystal transmittance correction section corrects the liquid crystal data and increases transmittance so as to compensate reduction in luminance of the backlight.
    Type: Application
    Filed: March 31, 2010
    Publication date: May 10, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Kazuyoshi Yoshiyama, Yasuhiro Ohki, Masafumi Ueno, Takashi Ishizumi, Kenji Takase
  • Publication number: 20120075274
    Abstract: A display device includes: an LED control section (4) for carrying out control in which (i) an output luminance of an LED (10) whose measured luminance is deviated from a reference luminance or (ii) output luminances of peripheral LEDs (10) which are provided around the LED (10) is or are corrected, respectively, by using control information of the plurality of LEDs, which control information contains (a) information on measured luminances of the plurality of LEDs, the information being obtained by the plurality of photosensors (11) and (b) positional information of the plurality of LEDs, the positional information being obtained by the plurality of photosensors (11), and a liquid crystal display control section (3) for controlling, based on (i) video signals which have been subjected to the video signal process and are supplied from a video signal processing section (2) and (ii) the control information supplied from the LED control section (4), (a) levels of video signals to be supplied to pixels correspondi
    Type: Application
    Filed: February 17, 2010
    Publication date: March 29, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Ueno, Hiroyuki Furukawa, Kazuyoshi Yoshiyama, Yasuhiro Ohki, Kenji Takase, Takashi Ishizumi
  • Patent number: 7965303
    Abstract: In an image displaying apparatus including a motion compensated rate converting (FRC) portion, deterioration of image quality is prevented in an image having a high-speed region and a low-speed region mixed. The FRC portion includes a motion vector detecting portion 11e and an interpolation frame generating portion 12b. The motion vector detecting portion 11e includes a first region detecting means 112e1 that detects a first region (high-speed region) including a motion amount equal to or greater than a first predetermined amount from an input image signal, a second region detecting means 112e2 that detects a second region (low-speed region) including a motion amount equal to or less than a second predetermined amount from the input image signal, and a third region detecting means 113e that detects a still region from an inter-frame difference of the input image signal.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: June 21, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiharu Hanaoka, Yasuhiro Yoshida, Masafumi Ueno, Hiroyuki Furukawa, Kenichiroh Yamamoto, Takashi Yoshii
  • Publication number: 20100321566
    Abstract: In an image displaying device provided with a frame rate conversion (FRC) portion, the image quality deterioration in a moving image likely to include a plurality of the same consecutive images due to a FRC processing is prevented. The FRC portion (100) of the image displaying device includes a motion vector detecting portion (101) that detects motion vector information from an input image signal, an interpolation frame generating portion (106) that generates interpolation frames based on the motion vector information obtained by the motion vector detecting portion (101) and a same image detecting portion (105) that detects a case where the same images continue in the input image signal.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 23, 2010
    Inventors: Kenichiroh Yamamoto, Hiroyuki Furukawa, Masafumi Ueno, Yasuhiro Yoshida
  • Patent number: 7773049
    Abstract: The crosstalk of a display apparatus can be efficiently eliminated to realize a precise, high-quality display. A liquid crystal display apparatus includes, as a crosstalk elimination circuit, an adjacent picture element acquisition circuit (1) that acquires display signals of picture elements adjacent to a self picture element, and two-dimensional LUTs (2) that use the display signals of the adjacent picture elements, acquired by the adjacent picture element acquisition circuit (1), to correct display signals of the self picture element so as to correct RGB display signals. The picture element display signals as corrected by the correction values output from the LUTs (2) are output to a source driver (4) via a timing controlling unit (TC) (3).
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: August 10, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Ueno, Naoko Kondo, Hiroyuki Furukawa, Yasuhiro Yoshida
  • Publication number: 20100118185
    Abstract: It is an object to suppress a disturbance or distortion of an insertion image in the vicinity of an effective image edge portion such as an edge portion of a screen or the like caused by a moving compensation type frame rate conversion (FRC). An image processing device is provided with a moving vector detection circuit (2) for detecting a moving vector of an input image signal, an effective image edge portion judging circuit (5) for judging if a moving vector detecting position is adjacent to the effective image edge portion, and a vector switching circuit (3) for switching a vector in accordance with the judging result. The vector switching circuit (3) fixes the vector to 0 vector in the case where the moving vector detecting position is adjacent to the effective image edge portion. In the case where the position is in other region, the vector switching circuit (3) outputs the moving vector detected by the moving vector detection circuit (2) to an insertion vector allocation circuit (4).
    Type: Application
    Filed: March 12, 2007
    Publication date: May 13, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Kenichiroh Yamamoto, Takashi Yoshii, Masafumi Ueno, Yasuhiro Yoshida