Patents by Inventor Tsunenori Yamamoto

Tsunenori Yamamoto 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).

  • Publication number: 20040125062
    Abstract: A liquid crystal display apparatus is able to display high quality motion pictures with less after-image when displaying motion pictures and with less fuzzy images without making the response speed of the liquid crystal too fast. The display data emphasized excessively more than a changed value is written into the pixel having any change detected by comparison with the previous display data and its value is made to change excessively more than the value corresponding to its original display data, and then, according to the optical response of the liquid crystal, the lighting time and the lighting period of the light source are controlled for the individual areas of the illumination unit having plural areas.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 1, 2004
    Inventors: Tsunenori Yamamoto, Sukekazu Aratani, Makoto Yoneya
  • Patent number: 6756954
    Abstract: A liquid crystal display apparatus for high quality moving image is provided.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: June 29, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Tsunenori Yamamoto, Nobuyuki Suzuki, Makoto Tsumura, Ikuo Hiyama
  • Patent number: 6704066
    Abstract: A liquid crystal display apparatus which is so configured that first and second pixel electrodes and active elements are positioned in a pixel, and an output terminal thereof is connected to a pixel electrode and a row line or a common line respectively, driving is performed by a difference voltage between the row lines or between the row line and the common line, and besides, a superimposing portion via a dielectric film of the first pixel electrode and the second pixel electrode is provided around a center in a row direction of pixels, and moreover, a holding capacitance is formed in the superimposing portion, and the first pixel electrode and the second pixel electrode are in a shape forming an axisymmetric relation in the row direction centering on the superimposing portion.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: March 9, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Patent number: 6704067
    Abstract: A liquid crystal display apparatus having a pair of substrates of which at least one is transparent; and a liquid crystal layer supported between the pair of substrates, in which one of the pair of substrates has a plurality of row lines and a plurality of row lines, and pixels are placed corresponding to intersections of the plurality of row lines and the plurality of row lines. A first pixel electrode and a second pixel electrode are provided in the pixel, and a first active element is placed in the pixel and an output terminal thereof is connected to one row line adjacent to the first pixel electrode and the pixel, and a second active element is placed in the pixel and its output is connected to the other row line adjacent to the second pixel electrode.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: March 9, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Publication number: 20040041760
    Abstract: A liquid crystal display device includes a periodically switching light source repeatedly turning ON and OFF at a predetermined timing and a display unit for displaying an image by controlling light transmission or reflection of the periodically switching light source according to the image data. In each display frame constituting one image, write into the liquid crystal display device is divided into a first write for writing into all the pixels using precharge data as representative of a plurality of pixels created according to a first algorithm and a second write for additionally writing overwriting data created on at least some pixels according to a second algorithm, thereby displaying an image. In the liquid crystal display device using the periodically switching light source, the periodically switching ghost is suppressed and the moving picture display performance is improved.
    Type: Application
    Filed: July 7, 2003
    Publication date: March 4, 2004
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama
  • Publication number: 20040041761
    Abstract: An image display apparatus configured by a display panel having an image memory element in a pixel, which achieves low power consumption. A nonvolatile image memory element 1, which can change the resistance value by phase change, is connected to a pixel electrode 25 of a liquid crystal element 5. The output of a thin-film transistor 17 driven by scanning and signal electrode lines 7, 9 is connected to the pixel electrode 25. When the scanning electrode line 7 is selected to have a high level voltage, the thin-film transistor 17 is turned on and a current signal flowing through the signal electrode 9 is sent through the image memory element 1 to a reference electrode line 15. Depending on the current value or pulse width passing through the image memory element 1, the resistance of the image memory element 1 is changed and is stored as a resistance value.
    Type: Application
    Filed: August 6, 2003
    Publication date: March 4, 2004
    Inventors: Tatsuya Sugita, Shinichi Komura, Shoichi Hirota, Tsunenori Yamamoto, Tetsuya Ooshima, Susumu Edo, Akitoyo Konno
  • Publication number: 20030201969
    Abstract: A light illumination apparatus comprising a light source on a lateral side of a light-pipe, and a reflector on the backside of the light-pipe, further comprising an air layer or the like between the light-pipe and the reflector, and, in order that light coming from a light source into the light-pipe is emitted from a light emission plane, the apparatus further comprising a light scattering control layer disposed at a portion of the light-pipe and having directivity in a direction substantially normal to the light emission plane, a means for substantially removing light scattering characteristics of a predetermined region of the light scattering control layer so as to satisfy the conditions for totally internal reflection of the incident light from the light source at an interface of the light-pipe, and a means for moving the predetermined region, wherein the time average amount of emitted light is substantially equal in each of all light emission regions, and there is time when the light emissive region subst
    Type: Application
    Filed: April 21, 2003
    Publication date: October 30, 2003
    Applicant: HITACHI, LTD.
    Inventors: Ikuo Hiyama, Tsunenori Yamamoto, Makoto Tsumura, Yoshinori Aono
  • Publication number: 20030169379
    Abstract: A liquid crystal display apparatus which is so configured that first and second pixel electrodes and active elements are positioned in a pixel, and an output terminal thereof is connected to a pixel electrode and a row line or a common line respectively, driving is performed by a difference voltage between the row lines or between the row line and the common line, and besides, a superimposing portion via a dielectric film of the first pixel electrode and the second pixel electrode is provided around a center in a row direction of pixels, and moreover, a holding capacitance is formed in the superimposing portion, and the first pixel electrode and the second pixel electrode are in a shape forming an axisymmetric relation in the row direction centering on the superimposing portion.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 11, 2003
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Patent number: 6608657
    Abstract: A light illumination apparatus comprising a light source on a lateral side of a light-pipe, and a reflector on the backside of the light-pipe, further comprising an air layer or the like between the light-pipe and the reflector, and, in order that light coming from a light source into the light-pipe is emitted from a light emission plane, the apparatus further comprising a light scattering control layer disposed at a portion of the light-pipe and having directivity in a direction substantially normal to the light emission plane, a means for substantially removing light scattering characteristics of a predetermined region of the light scattering control layer so as to satisfy the conditions for totally internal reflection of the incident light from the light source at an interface of the light-pipe, and a means for moving the predetermined region, wherein the time average amount of emitted light is substantially equal in each of all light emission regions, and there is time when the light emissive region subst
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: August 19, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Ikuo Hiyama, Tsunenori Yamamoto, Makoto Tsumura, Yoshinori Aono
  • Publication number: 20030117422
    Abstract: A display device including a plurality of blocks of pixels each of which includes a red subpixel, a green subpixel, and a blue subpixel, each of the blocks including pixels in a form of a matrix having N rows and M columns includes a first active element shared among three subpixels of each pixel and a second active element connected to a second active element formed in each subpixel connected to the first active element. Ma gradation voltage lines (Ma is an integer; M≧Ma≧2) respectively of red, green, and blue subpixels in a direction of the column are commonly connected. The display device directly displays a compressed image signal without developing the image signal into a bit map in which each subpixel has gradation information.
    Type: Application
    Filed: August 21, 2002
    Publication date: June 26, 2003
    Inventors: Ikuo Hiyama, Tsunenori Yamamoto, Akitoyo Konno, Makoto Tsumura
  • Publication number: 20030090448
    Abstract: A liquid crystal display apparatus which is so configured that first and second pixel electrodes and active elements are positioned in a pixel, and an output terminal thereof is connected to a pixel electrode and a row line or a common line respectively, driving is performed by a difference voltage between the row lines or between the row line and the common line, and besides, a superimposing portion via a dielectric film of the first pixel electrode and the second pixel electrode is provided around a center in a row direction of pixels, and moreover, a holding capacitance is formed in the superimposing portion, and the first pixel electrode and the second pixel electrode are in a shape forming an axisymmetric relation in the row direction centering on the superimposing portion.
    Type: Application
    Filed: March 20, 2002
    Publication date: May 15, 2003
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Publication number: 20030080932
    Abstract: There is disclosed a liquid crystal display apparatus having high motion image display performance. After preset writing, polarities are reversed between double and quadruple speeds of a normal speed to carry out writing. Accordingly, en-block black wiring on a full surface of screen and in-frame AC driving are achieved. By combining this with intermittent lighting of an illuminator, high motion image display performance is achieved. Scanning is started from one line or a pair of adjacent lines, one or more lines being present in the screen, and the scanning is carried out in both upper and lower directions with the one line or the pair of adjacent lines set as a reference. Thus, discontinuity of luminance in the screen is prevented, and high display performance is achieved.
    Type: Application
    Filed: March 19, 2002
    Publication date: May 1, 2003
    Inventors: Akitoyo Konno, Makoto Tsumura, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Publication number: 20030063062
    Abstract: A multi-color display system suppressed in deterioration in resolution and increase in power consumption or deterioration in brightness. The multi-color display system includes n types of spectrum selecting means; m types of light sources each having different spectral distribution; light source controlling means for controlling in a time-division basis emissions from the m types of light sources; color light sources generated by the light source controlling means and the n types of spectrum selecting means, the number of the color light sources being not less than n+1 but not more than n×m; and a light valve for controlling a transmittance or a reflectance in accordance with image information.
    Type: Application
    Filed: March 20, 2002
    Publication date: April 3, 2003
    Inventors: Makoto Tsumura, Tsunenori Yamamoto, Tatsuki Inuduka
  • Publication number: 20030043098
    Abstract: A liquid crystal display apparatus including: a first substrate; a second substrate arranged opposite the first substrate; and a liquid crystal layer held between the first substrate and the second substrate; further provided with a plurality of scanning lines arranged over the first substrate; signal lines arranged over the first substrate to cross the scanning lines; pixels each composed matching an area surrounded by the scanning lines and the signal lines; pixel electrodes arranged over the first substrate and matching the signal lines; and common electrodes arranged over the first substrate and matching the pixel electrodes, wherein at least either of the first substrate and the second substrate is provided with unevenness to vary the thickness of the liquid crystal layer in the light-transmissive regions of the same ones of the pixels.
    Type: Application
    Filed: May 21, 2002
    Publication date: March 6, 2003
    Inventors: Tetsuya Aoyama, Kenji Okishiro, Katsumi Kondou, Tsunenori Yamamoto, Shinichi Komura
  • Publication number: 20020118158
    Abstract: A display apparatus includes pixels arranged in matrix; a pixel electrode disposed inside each of the pixels; a display device disposed inside each of the pixels, for executing display in accordance with a voltage of the pixel electrode; a scanning line driving circuit; an identification signal line driving circuit; a storage unit for storing the identification signal supplied from the identification signal line in the pixel; a gray scale voltage line driving circuit; a selection unit for selecting the gray scale voltage supplied to the gray scale voltage lines based on the identification signal stored in the storage unit; a switching device for applying the selected gray scale voltage to the pixel electrode; and a gray scale write line driving circuit for supplying a gray scale write signal to a gray scale write line for controlling the switching device.
    Type: Application
    Filed: August 22, 2001
    Publication date: August 29, 2002
    Inventors: Tsunenori Yamamoto, Tatsuki Inuzuka, Ikuo Hiyama, Shinichi Komura
  • Publication number: 20020118183
    Abstract: A control device, which is capable of suppressing an increase in a load of a data transfer for an increase of an amount of data is provided. The control device includes a compressed data generation unit for generating a compressed data based on a set-up value inputted, and a controller for outputting a frame rate information to the compressed data generation unit, and for making compressed data to be outputted from a memory for use in storing a compressed data to an image display device in accordance with the frame rate.
    Type: Application
    Filed: August 31, 2001
    Publication date: August 29, 2002
    Inventors: Tatsuki Inuzuka, Tsunenori Yamamoto, Ikuo Hiyama, Makoto Tsumura, Yasutaka Toyoda
  • Publication number: 20020105506
    Abstract: To provide a display device capable of displaying a moving picture with high definition and at high speed. An image display system includes: an image display unit; and a control unit. The control unit has: a block discrimination circuit portion; an image processing portion; a storage portion; and a synchronizing signal generation portion. The block discrimination circuit portion discriminates a moving picture or a still picture to process the image information in accordance with the discriminated result, in which the number of gradations for the image information processed when the discriminated result is the moving picture is lower than when the discriminated result is the still picture. Thereby, the high definition image display and the high speed moving picture display can be effected by reducing the information with lower degree of recognition.
    Type: Application
    Filed: September 24, 2001
    Publication date: August 8, 2002
    Inventors: Ikuo Hiyama, Tsunenori Yamamoto, Akitoyo Konno, Makoto Tsumura, Yoshiyuki Kaneko, Yoshiro Mikami, Tatsuki Inuzuka, Yasutaka Toyoda
  • Publication number: 20020051153
    Abstract: A display method can achieve both of substantially high definition image display and high speed dynamic image display. The image displaying method of an image displaying apparatus having a display portion consisted of a plurality of pixels takes each of a predetermined number of pixels as one block unit and forms one screen image for displaying by combining a region for displaying the same information on a plurality of pixels in the one block unit during one scanning period and a region for permitting display of respectively different information on the plurality of pixels in the one block unit.
    Type: Application
    Filed: April 10, 2001
    Publication date: May 2, 2002
    Inventors: Ikuo Hiyama, Shinichi Komura, Tsunenori Yamamoto, Tetsuya Aoyama, Hideo Sato, Makato Tsumura, Katsumi Kondo, Yuka Utsumi
  • Publication number: 20020047818
    Abstract: A liquid crystal display apparatus has scanning lines, signal lines, active elements, pixel electrodes, common lines and opposed electrodes, arranged on one of a pair of substrates.
    Type: Application
    Filed: March 16, 2001
    Publication date: April 25, 2002
    Inventors: Tsunenori Yamamoto, Nobuyuki Suzuki, Makoto Tsumura, Ikuo Hiyama
  • Publication number: 20020033909
    Abstract: A light illumination apparatus comprising a light source on a lateral side of a light-pipe, and a reflector on the backside of the light-pipe, further comprising an air layer or the like between the light-pipe and the reflector, and, in order that light coming from a light source into the light-pipe is emitted from a light emission plane, the apparatus further comprising a light scattering control layer disposed at a portion of the light-pipe and having directivity in a direction substantially normal to the light emission plane, a means for substantially removing light scattering characteristics of a predetermined region of the light scattering control layer so as to satisfy the conditions for totally internal reflection of the incident light from the light source at an interface of the light-pipe, and a means for moving the predetermined region, wherein the time average amount of emitted light is substantially equal in each of all light emission regions, and there is time when the light emissive region subst
    Type: Application
    Filed: April 10, 2001
    Publication date: March 21, 2002
    Applicant: HITACHI, LTD.
    Inventors: Ikuo Hiyama, Tsunenori Yamamoto, Makoto Tsumura, Yoshinori Aono