Patents by Inventor Akihiro Takagi

Akihiro Takagi 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: 8791894
    Abstract: Systems and methods may provide for determining an operating mode of a display device that may include a flat panel display and a controller coupled to the flat panel display. The controller may be configured to determine an operating mode for the flat panel display among a plurality of operating modes including at least a first operating mode and a second operating mode. In the first operating mode, the controller may set the flat panel display to utilize a first frame rate and a first inversion mode to save power. In the second operating mode, the controller may set the flat panel display to utilize a second frame rate, a second inversion mode, and black frame insertion to improve image quality. The second frame rate may be faster than the first frame rate. The second inversion mode and black frame insertion may be mutually configured to maintain a DC balanced operation of the flat panel display.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: July 29, 2014
    Assignee: Intel Corporation
    Inventors: Akihiro Takagi, Cheng-Shih Chin, Yanli Zhang, Maximino Vasquez
  • Publication number: 20140080411
    Abstract: Described herein are architectures, platforms and methods for integrating near field communication (NFC) coil antenna behind a screen display of devices and more particularly, to improve near field coupling capabilities of the devices by configuring the screen display to implement a context based software logo to guide a user. The context based software logo displays a tapping area location during NFC related functions.
    Type: Application
    Filed: December 20, 2012
    Publication date: March 20, 2014
    Inventors: Anand S. Konanur, Janardhan Koratikere Narayan, Ulun Karacaoglu, Akihiro Takagi, Songnan Yang
  • Publication number: 20140062329
    Abstract: An apparatus may include a backlight for illuminating a liquid crystal display and a control module for controlling the illumination of the backlight. The control module may alternate between turning the backlight on and off at a first frequency and turning the backlight on and off at a second frequency.
    Type: Application
    Filed: December 29, 2011
    Publication date: March 6, 2014
    Inventors: Yanli Zhang, Akihiro Takagi, Achintya K. Bhowmik, Anil V. Nanduri
  • Patent number: 8654141
    Abstract: Techniques are described that can be used to provide color space conversion for images and video to a display color gamut space. Some techniques provide for accessing an sRGB gamut color table, determining a color conversion matrix based on the sRGB gamut color table and chromaticity values of RGBW primary and gamma stored in the display or associated with the display, applying color space conversion to the pixels for pixels using the color conversion matrix, and applying linear correction of pixels by applying a normalization factor to the color conversion matrix. In addition, some techniques provide analysis of content gamut with respect to display gamut in HSV space, adjustment in HSV space, and conversion back to RGB space before applying color space conversion.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: February 18, 2014
    Assignee: Intel Corporation
    Inventors: Yanli Zhang, Akihiro Takagi, Sunil Jain
  • Publication number: 20130328950
    Abstract: A system, apparatus and method to reduce power consumption for displays is described. The method may include receiving image data comprising a plurality of color components, generating a histogram for each of the plurality of color components, and adjusting each of a plurality of light sources based on the histograms. The plurality of light sources may correspond to the plurality of color components. Other embodiments are described and claimed.
    Type: Application
    Filed: August 12, 2013
    Publication date: December 12, 2013
    Inventors: Maximino Vasquez, Achintya Bhowmik, Yanli Zhang, Akihiro Takagi
  • Patent number: 8578192
    Abstract: Some embodiments describe techniques that relate to power efficient, high frequency displays with motion blur mitigation. In one embodiment, the refresh rate of a display device may be dynamically modified, e.g., to reduce power consumption and/or reduce motion blur. Other embodiments are also described.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: November 5, 2013
    Assignee: Intel Corporation
    Inventors: Maximino Vasquez, Akihiro Takagi, Yanli Zhang, Achintya K. Bhowmik
  • Publication number: 20130113694
    Abstract: In some embodiments, a display device may include a flat panel display a controller coupled to the flat panel display. The controller may be configured to determine an operating mode for the flat panel display among a plurality of operating modes including at least a first operating mode and a second operating mode. In the first operating mode, the controller may set the flat panel display to utilize a first frame rate and a first inversion mode to save power. In the second operating mode, the controller may set the flat panel display to utilize a second frame rate, a second inversion mode, and black frame insertion to improve image quality. The second frame rate may be faster than the first frame rate. The second inversion mode and black frame insertion may be mutually configured to maintain a DC balanced operation of the flat panel display. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: December 28, 2012
    Publication date: May 9, 2013
    Inventors: Akihiro Takagi, Cheng-Shih Chin, Yanli Zhang, Maximino Vasquez
  • Patent number: 8358260
    Abstract: A display device may include a flat panel display, and a controller coupled to the flat panel display. The controller may be configured to determine an operating mode for the flat panel display among a plurality of operating modes including at least a first operating mode and a second operating mode. In the first operating mode, the controller may set the flat panel display to utilize a first frame rate and a first inversion mode to save power. In the second operating mode, the controller may set the flat panel display to utilize a second frame rate, a second inversion mode, and a black frame insertion to improve image quality. The second frame rate may be faster than the first frame rate. The second inversion mode and black frame insertion may be mutually configured to maintain a DC balanced operation of the flat panel display.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: January 22, 2013
    Assignee: Intel Corporation
    Inventors: Akihiro Takagi, Cheng-Shih Chin, Yanli Zhang, Maximino Vasquez
  • Patent number: 8269693
    Abstract: In a PDP device, a technique capable of more efficiently performing address energy control according to contents of a display image (display data) to reduce the address energy. In the PDP device, as an address energy recovery circuit, a plurality of address energy control circuits (B1 to Bn) are provided corresponding to a plurality (n) of regions (H1 to Hn) into which a screen area (R) and a group of address electrodes are divided in a horizontal direction. For each of the regions (H) of which the address energy recovery circuits (B) are respectively in charge and for each of subfields, an address pulse switching load (Q) corresponding to that region (H) is determined, and then, according to the magnitude of the load (Q), the operation of the address energy recovery circuit (B) is ON/OFF-controlled.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: September 18, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Akihiro Takagi, Tetsuya Sakamoto, Takayuki Kobayashi, Takashi Sasaki, Akira Otsuka
  • Publication number: 20120081350
    Abstract: A plasma display apparatus including a capacitive load and a driving circuit is provided. The plasma display apparatus includes a driving power source supplying a drive voltage to the capacitive load and a reference potential terminal supplying a reference potential to the capacitive load. A drive IC is coupled to the driving power source.
    Type: Application
    Filed: December 14, 2011
    Publication date: April 5, 2012
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Yuji SANO, Akihiro Takagi, Tomokatsu Kishi, Toyoshi Kawada, Hirokazu Inoue
  • Patent number: 8098218
    Abstract: A plasma display device includes a first electrode from which sustain discharge occurs; a second electrode from which sustain discharge occur to the first electrode, a distance from the second electrode to the first electrode continuously varying in one discharge space; and a driving circuit which generates a sustain discharge pulse that rises in two stages, with an application time of a second-stage voltage being longer than an application time of a first-stage voltage, to apply the sustain discharge pulse between the first and second electrodes, thereby causing the sustain discharge.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: January 17, 2012
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Akihiro Takagi, Takashi Sasaki, Akira Otsuka
  • Patent number: 8040295
    Abstract: In a PDP apparatus provided with a PDP having (X, Y, A) and various drivers, two adjacent Ys in a plurality of Ys are commonly connected by a wiring so as to form one set unit, in the vicinity of a connection portion of the PDP and the drivers. A two-stage reset and address operation control using a reset operation including an address disable operation is used for a control unit including a plurality of display lines (L) of the set units. In a plurality of Ls as objects of drive display, the reset and address operation of first Ls (Lo) corresponding to Ys on one side of set units and that of second Ls (Le) corresponding to Ys on the other side thereof are performed separately in former and latter periods, and then, sustain operations of the first and second Ls on both sides are performed simultaneously.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: October 18, 2011
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Akihiro Takagi, Tetsuya Sakamoto, Takashi Shiizaki
  • Patent number: 8026869
    Abstract: A plasma display driving method and apparatus that can reduce the occurrences of dropout, on a displayed image, caused by misaddress when the environment temperature becomes low. In the inventive plasma display, the environment temperature is determined, and during a charge adjustment interval, the ultimate voltage, which the drive waveform of a scan electrode voltage reaches at the end after continuously varying in the negative direction, is changed in accordance with the determined environment temperature in such a manner that if the environment temperature becomes lower, the ultimate voltage is directed in the positive direction.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: September 27, 2011
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Akihiro Takagi, Takashi Sasaki, Akira Otsuka
  • Publication number: 20110181611
    Abstract: In some embodiments a user interface is adapted to monitor user inputs and one or more controllers are adapted to modify backlight segment brightness and/or image pixel values of a segmented backlight display in response to the monitored user inputs. Other embodiments are described and claimed.
    Type: Application
    Filed: December 21, 2010
    Publication date: July 28, 2011
    Inventors: Yanli Zhang, Akihiro Takagi, Maximino Vasquez, Yinkui Zhang, Xiaoguo Liang
  • Publication number: 20110157212
    Abstract: Techniques are described that can be used to provide color space conversion for images and video to a display color gamut space. Some techniques provide for accessing an sRGB gamut color table, determining a color conversion matrix based on the sRGB gamut color table and chromaticity values of RGBW primary and gamma stored in the display or associated with the display, applying color space conversion to the pixels for pixels using the color conversion matrix, and applying linear correction of pixels by applying a normalization factor to the color conversion matrix. In addition, some techniques provide analysis of content gamut with respect to display gamut in HSV space, adjustment in HSV space, and conversion back to RGB space before applying color space conversion.
    Type: Application
    Filed: December 29, 2009
    Publication date: June 30, 2011
    Inventors: Yanli Zhang, Akihiro Takagi, Sunil Jain
  • Patent number: 7880689
    Abstract: There is provided a drive circuit of a display device using a capacitive load which includes a clamp circuit connected to a power source potential and clamping a potential of the capacitive load to the power source potential such that an electric power is supplied to the capacitive load in a temporally dispersed manner. For example, the clamp circuit includes a plurality of switches parallelly connected between the capacitive load and the power source potential, the plurality of switches being turned on at different times.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: February 1, 2011
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Tomokatsu Kishi, Tetsuya Sakamoto, Akihiro Takagi, Satoru Nishimura, Yoshikazu Kanazawa, Takayuki Kobayashi, Takashi Sasaki, Yasunobu Hashimoto
  • Publication number: 20100328333
    Abstract: In some embodiments one or more areas of interest to a user of a display screen are determined. Portions of the display screen other than the one or more areas of interest are dimmed. Other embodiments are described and claimed.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Inventors: Jun Shi, Akihiro Takagi, Robert J. Brennan, Seh W. Kwa, Yanli S. Zhang
  • Publication number: 20100289794
    Abstract: In a PDP device, a technique capable of more efficiently performing address energy control according to contents of a display image (display data) to reduce the address energy. In the PDP device, as an address energy recovery circuit, a plurality of address energy control circuits (B1 to Bn) are provided corresponding to a plurality (n) of regions (H1 to Hn) into which a screen area (R) and a group of address electrodes are divided in a horizontal direction. For each of the regions (H) of which the address energy recovery circuits (B) are respectively in charge and for each of subfields, an address pulse switching load (Q) corresponding to that region (H) is determined, and then, according to the magnitude of the load (Q), the operation of the address energy recovery circuit (B) is ON/OFF-controlled.
    Type: Application
    Filed: June 29, 2007
    Publication date: November 18, 2010
    Inventor: Akihiro Takagi
  • Publication number: 20100271351
    Abstract: A plasma display device includes a plasma display panel and a driver unit driving the plasma display panel. The plasma display panel includes a first plate on which a sustain electrode and a scan electrode, a dielectric layer, an address electrode extending in a direction intersecting with the sustain electrode, and a protective layer are sequentially stacked and a second plate disposed to face the first plate via a discharge space. On the second plate, a barrier rib extending in the direction intersecting with the sustain electrode is formed. One edge part of the address electrode lies on the barrier rib and the other edge part of the address electrode lies on the discharge space. During an address period, the driver unit applies a scan pulse operating as an anode to the scan electrode and applies an address pulse operating as a cathode to the address electrode. This makes it possible to prevent erroneous discharge.
    Type: Application
    Filed: July 27, 2007
    Publication date: October 28, 2010
    Inventors: Akihiro Takagi, Tetsuya Sakamoto, Takashi Sasaki
  • Publication number: 20100253611
    Abstract: In some embodiments, a display device may include a flat panel display a controller coupled to the flat panel display. The controller may be configured to determine an operating mode for the flat panel display among a plurality of operating modes including at least a first operating mode and a second operating mode. In the first operating mode, the controller may set the flat panel display to utilize a first frame rate and a first inversion mode to save power. In the second operating mode, the controller may set the flat panel display to utilize a second frame rate, a second inversion mode, and black frame insertion to improve image quality. The second frame rate may be faster than the first frame rate. The second inversion mode and black frame insertion may be mutually configured to maintain a DC balanced operation of the flat panel display. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: April 6, 2009
    Publication date: October 7, 2010
    Inventors: Akihiro Takagi, Cheng-Shih Chin, Yanli Zhang, Maximino Vasquez