Patents by Inventor Hiroshi Kawasaki

Hiroshi Kawasaki 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: 20080211382
    Abstract: The present invention achieves a desired white color temperature without deteriorating white uniformity and without lowering brightness in a field emission display (FED). A width of a green phosphor is set larger than a width of a red phosphor or a width of a blue phosphor and, at the same time, a distance between the center of the red phosphor and the center of the green phosphor is set larger than a distance between the center of the blue phosphor and the center of the red phosphor. Due to such a constitution, black matrix widths between the respective phosphors are set to a fixed value. Simultaneously, positions of electron sources are set in conformity with the positions of the respective phosphors. Due to such a constitution, it is possible to realize a desired white color temperature without deteriorating landing tolerance of electron beams or without lowering a utilization efficiency of a phosphor screen.
    Type: Application
    Filed: November 27, 2007
    Publication date: September 4, 2008
    Inventors: Tsutomu Kuniyasu, Takahiro Ueno, Go Saitou, Hiroshi Kawasaki
  • Patent number: 7417366
    Abstract: The present invention provides an image display device in which it is possible to obtain an image display of high brightness and high contrast by preventing the halation which may be generated in a peripheral portion of a display image. By providing a carbon film which attenuates the reentry of secondary electrons, which are generated when electron beams impinge on an anodes, to a back surface of the anode, even when primary electrons impinge on the anode, the secondary electrons are hardly emitted from the anode. At the same time, a trace amount of emitted secondary electrons are mainly formed of electrons having a small energy. Hence, these emitted secondary electrons are scattered and hardly reenter the anode.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: August 26, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Shigemi Hirasawa, Yuuichi Kijima, Hiroshi Kawasaki
  • Patent number: 7400343
    Abstract: An apparatus for generating an image includes a vehicle moving at a predetermined direction; and a plurality of cameras arranged on the vehicle along a linear line parallel to the predetermined direction and at different angles from each other with respect to the predetermined direction so as to include all areas of images to be acquired. The apparatus forms one image by integrating images at the same point acquired by the cameras, respectively without being synchronized the cameras with each other and using any external sensor.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: July 15, 2008
    Assignee: The University of Tokyo
    Inventors: Katsushi Ikeuchi, Masao Sakauchi, Hiroshi Kawasaki
  • Patent number: 7385343
    Abstract: Rupture of distance holding members, aback substrate or a front substrate attributed to atmospheric pressure is suppressed in a display device in which, between the back substrate having cathode lines and plate-member control electrodes and the front substrate, a large number of distance holding members, which maintain distance between the substrates, are mounted in an erect manner. At portions where the distance holding members are brought into contact with the back substrate and/or the front substrate, a buffering/fixing material, which is constituted of a buffering material having high resiliency and an adhesive, is interposed for dispersing the atmospheric pressure applied from the back substrate and the front substrate substantially uniformly. Further, the distance holding members are fixed between the back substrate and the front substrate by a heat treatment and a pressurizing step.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: June 10, 2008
    Assignees: Hitachi Displays, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Shigemi Hirasawa, Yoshiyuki Kaneko, Susumu Sasaki, Yuuichi Kijima, Hiroshi Kawasaki
  • Patent number: 7342669
    Abstract: A three-dimensional shape is measured by a simple system structure. A three-dimensional shape measuring instrument comprises a device (1-1) in which a light-emitting diode (1-1b) is installed as a marker in a line laser light source (1-1a), an imaging device (1-2), and a computer (1-3). For measurement, a line laser beam from the device (1-1) is applied to an object (1-4) to be measured, the imaging device (1-2) images the applied line laser beam (1-5) and the light-emitting diode, and a three-dimensional shape is obtained from the image data by triangulation by means of the computer (1-3).
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: March 11, 2008
    Assignee: Technodream21 Inc.
    Inventors: Hiroshi Kawasaki, Ryo Furukawa
  • Patent number: 7319286
    Abstract: A display device includes a front substrate having an anode and fluorescent materials on an inner surface, and a back substrate having a plurality of cathode lines and include electron sources, and a plurality of control electrodes allow electrons from the electron sources to emit to the front substrate side, on an inner surface thereof. The back substrate is arranged to face the front substrate in an opposed manner with a given gap therebetween, and an outer frame for holding the given gap is interposed between the front substrate and the back substrate and extends around the display region. An inner frame is arranged outside the display region and inside the outer frame, and a getter is provided between the outer frame and the inner frame.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: January 15, 2008
    Assignees: Hitachi Displays, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Yuuichi Kijima, Yoshiyuki Kaneko, Shigemi Hirasawa, Susumu Sasaki, Tomoki Nakamura, Hiroshi Kawasaki, Jun Ishikawa
  • Patent number: 7285901
    Abstract: A display device includes a face substrate which has anodes and phosphors on an inner surface thereof, a back substrate which has cathode lines and electron sources formed on the cathode lines, a support body which is interposed between both substrates such that the support body surrounds a display region and forms a given inner space, and a sealing material which hermetically seals the support body and both substrates. To enable the display device to produce a high quality display and have a long lifetime while ensuring the conduction in a wide range between the cathode lines and the electron sources, the cathode lines are made of a material having a conductor and an insulator, and the composition of a connecting portion between the cathode line and the electron source is formed such that the conductor occupancy rate becomes equal to or more than the insulator occupancy rate.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: October 23, 2007
    Assignee: Hitachi Displays, Ltd.
    Inventors: Susumu Sasaki, Yoshiyuki Kaneko, Shigemi Hirasawa, Makoto Okai, Hiroshi Kawasaki
  • Publication number: 20070220972
    Abstract: A vibrator 10, which is formed in a silicon wafer 1 by means of MEMS technique, has eight beam portions (beams) 12 supported at a central portion 11 and extending in the radial direction while mutually keeping the same angle and has a ring portion 13 connected to the eight beam portions 12. Outside the ring portion 13, eight electrodes 21a to 21h for electrostatic actuation, capacitance detection, or the like are spaced uniformly with a gap 22 created between the ring portion 13 and the electrodes 21a to 21h. Inside the ring portion 13, sixteen electrodes 23 for frequency adjustment are spaced uniformly with a gap 24 created between the ring portion 13 and the electrodes 23.
    Type: Application
    Filed: July 12, 2005
    Publication date: September 27, 2007
    Applicant: BAE STSTEMS PLC
    Inventors: Ryuta Araki, Osamu Torayashiki, Toru Kitamura, Hiroshi Kawasaki, Tsuyoshi Takemoto, Koji Nakamura, Christopher Fell, Kevin Townsend, Ian Sturland
  • Publication number: 20070037282
    Abstract: A method of producing a lens cell is disclosed. The method includes: an ES cell maintenance step of maintaining an ES cell by using a medium containing a fibroblast growth factor FGF-2 at a concentration of 2 ng/ml to 50 ng/ml; and a differentiation inducing step, carried out after the ES cell maintenance step, of inducing differentiation of the ES cell into a lens cell by implanting and culturing the ES cell on a mouse-skull-cell PA6 at a cell density of 2 colonies/cm2 to 6.5 colonies/cm2. In one embodiment, a washing step, carried out between the ES cell maintenance step and the differentiation inducing step, of washing the maintained ES cell once with an ES differentiation medium is included.
    Type: Application
    Filed: March 22, 2004
    Publication date: February 15, 2007
    Inventors: Masayo Takahashi, Yoshiki Sasai, Hiroshi Kawasaki, Sotaro Ooto
  • Publication number: 20070029924
    Abstract: An image display device according to the present invention comprises a back panel on which a plurality of pixels each having a thin film electron emitter are arranged two-dimensionally, a front panel disposed opposite the back panel on which phosphor layer is formed, and a sealing frame with which the back panel and the front panel are fixed mutually to seal the plurality of pixels and the phosphor layer in a space enclosed by the back panel, the front panel, and the sealing frame, and is characterized in that double-layered signal lines each electrically connected to a group of the plurality of pixels are formed on the back panel, each of the double-layered signal lines consists of a lower-level electrode made from a silver paste and an upper-level electrode covering at least a part of the lower-level electrode laminated in this order on the back panel. The lower-level electrode is shaped e.g.
    Type: Application
    Filed: August 3, 2006
    Publication date: February 8, 2007
    Inventors: Nobuyuki Ushifusa, Nobuhiko Fukuoka, Shigeru Matsuyama, Hiroshi Kawasaki, Chikae Kubo, Akira Ishii, Hiroshi Kikuchi, Takuo Tamura, Yasushi Sano
  • Publication number: 20070020053
    Abstract: There is provided a drilling method capable of improving machining accuracy of a printed board drilling apparatus as a whole by decreasing dispersion of the machining accuracy even if it is a multi-spindle printed board drilling apparatus. A misalignment of an axial center of a drill with respect to a designed axial center in X and Y directions is detected in advance per certain number of revolutions of each spindle that rotates the drill. Holes of two or more types of diameter are made on a printed board by making holes of at least one diameter, e.g., an exposure master hole, per each spindle and by making holes of all other diameters almost simultaneously by all of the spindles.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 25, 2007
    Inventors: Takao Furukawa, Hiroshi Kawasaki, Toshiyuki Iwata, Katsuhiro Nagasawa, Takahiko Yamashita
  • Patent number: 7144842
    Abstract: The invention provides a herbicide composition consisting of 2-[(4,6-dimethoxypyrimidin-2-yl)hydroxy-methyl]-6-methoxymethyl-N-difluoromethanesulfonylanilide as the component (A) and any compound selected from more than 20 kinds of specific compounds such as orbencarb and the like as the component (B), heretofore not combined with the component (A) compound. Dispensation of the herbicide composition to paddy fields, lawns, dry fields, or non-agricultural lands gives excellent weed-controlling effects on a variety of weeds and causes no or little phytotoxicities on valuable cultivated plants.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: December 5, 2006
    Assignee: Kumiai Chemical Industry Co., Ltd.
    Inventors: Hiroshi Kawasaki, Takeshige Miyazawa, Osamu Watanabe
  • Publication number: 20060214558
    Abstract: The present invention provides a high-quality image display device which allows scanning line electrodes to exhibit a uniform film thickness and the uniform low resistance over a whole length thereof thus suppressing local resistance irregularities and broken steps of the scanning line electrodes. The present invention provides the stacked structure which is constituted of scanning line lower electrodes which are embedded in grooves formed in a main surface of an insulating substrate which constitutes a first substrate, a first insulating layer, signal line electrodes, a second insulating layer, a third insulating layer, and scanning line upper electrodes. Electron sources are constituted of the signal line electrodes, the second insulating layer and the scanning line upper electrodes.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 28, 2006
    Inventors: Chikae Kubo, Nobuyuki Ushifusa, Nobuhiko Fukuoka, Shigeru Matsuyama, Hiroshi Kawasaki, Akira Ishii
  • Publication number: 20060192492
    Abstract: In a display panel each of whose pixels has an electron emission element equipped with a pair of electrodes and an insulation area isolating these electrodes, the present invention specifies that the power supply line (scan line) connected with one of the pair of electrodes shall be formed thicker than the other electrode by screen printing using silver (Ag) paste or the like, and the power supply line and the one of the electrodes shall be connected together through an intermediary of the auxiliary electrode formed thinner than the power supply line, whereby a resistance of the power supply line is decreased, a voltage drop in the one electrode is controlled, and reliability of electrical connection between the power supply line and the one electrode is heightened.
    Type: Application
    Filed: February 28, 2006
    Publication date: August 31, 2006
    Inventors: Nobuyuki Ushifusa, Nobuhiko Fukuoka, Shigeru Matsuyama, Hiroshi Kawasaki, Chikae Kubo, Akira Ishii
  • Patent number: 7078884
    Abstract: A selector sets respective phases of pulse driving signals in reverse when a proportion signal or integration signal does not exceed a threshold. Shifting the respective phases of the pulse driving signals from each other lowers the ripple voltage. When the load current increases drastically, the output voltage Vo tends to decrease remarkably because of the shortage of capacity in the power supply. In this case, when the proportion signal or integration signal exceeds its corresponding threshold, a phase control unit causes the pulse driving signals to synchronize their phases, i.e., the selector supplies the same ramp wave to the comparators, so that respective output voltages supplied from the DC voltage converter circuits attain the same phase, thereby restraining the output voltage supplied to the load from decreasing remarkably.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: July 18, 2006
    Assignee: TDK Corporation
    Inventors: Koichiro Miura, Takeshi Uematsu, Hiroshi Kawasaki, Takakazu Imai, Ken Matsuura
  • Patent number: 7075278
    Abstract: A controller 7A for generating a drive signal (PWM signal) PS for controlling a switching power supply, comprises control signal setting means 10, 11 for setting a control signal CS on the basis of an output voltage Vo and a target voltage Vr; current estimating means 12 for estimating an inductor current on the basis of the drive signal PS and for generating an estimated current signal PC; DC component removing means 14, 15 for extracting a DC component DC included in the estimated current signal PC and for removing the DC component DC from the estimated current signal PC; DC component resetting means 13, 14 for resetting the extracted DC component DC every predetermined time; and comparing means 16 for comparing the control signal CS with the estimated current signal PC? after the removal of the DC component DC.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: July 11, 2006
    Assignee: TDK Corporation
    Inventors: Takeshi Uematsu, Hiroshi Kawasaki, Takakazu Imai, Koichiro Miura, Ken Matsuura
  • Patent number: 7071607
    Abstract: The present invention provides a display device which can sufficiently ensure spaces for mounting distance holding members 5 when the distance holding members 5 are mounted, can facilitate the assembling and can realize the electron emission characteristics of high performance. At least two different types of gaps b, c (b<c) are provided among cathode lines 2 (2R, 2G, 2B) and the distance holding members 5 are mounted at portions of the gaps c having a larger size whereby the space for mounting the distance holding members 5 can be sufficiently ensured.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: July 4, 2006
    Assignees: Hitachi Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Yuuichi Kijima, Kenji Miyata, Yoshiyuki Kaneko, Shigemi Hirasawa, Susumu Sasaki, Hiroshi Kawasaki, Jun Ishikawa
  • Patent number: 7071666
    Abstract: An output voltage of a switching power supply is regulated to a target value. When the target value of the output voltage is altered, the reference value is changed monotonously and linearly a plurality of times at a plurality of gradients to the altered target value. An input voltage of the power supply is switched in response to a switching pulse with the duty ratio calculated according to a difference between the reference value and the output voltage.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: July 4, 2006
    Assignee: TDK Corporation
    Inventors: Takakazu Imai, Takeshi Uematsu, Hiroshi Kawasaki, Koichiro Miura, Ken Matsuura
  • Publication number: 20060055943
    Abstract: A three-dimensional shape is measured by a simple system structure. A three-dimensional shape measuring instrument comprises a device (1-1) in which a light-emitting diode (1-1b) is installed as a marker in a line laser light source (1-1a), an imaging device (1-2), and a computer (1-3). For measurement, a line laser beam from the device (1-1) is applied to an object (1-4) to be measured, the imaging device (1-2) images the applied line laser beam (1-5) and the light-emitting diode, and a three-dimensional shape is obtained from the image data by triangulation by means of the computer (1-3).
    Type: Application
    Filed: November 13, 2003
    Publication date: March 16, 2006
    Applicant: TECHNODREAM21 INC.
    Inventors: Hiroshi Kawasaki, Ryo Furukawa
  • Patent number: 7006916
    Abstract: The navigation apparatus includes a unit for displaying a real image on a display screen on the basis of real image data, and a unit for displaying additional information such as a primary place name or a primary building name in a position where the additional information should be displayed on the real image, on the basis of additional information data corresponding to the additional information and position data showing the position where the additional information should be displayed. Further, the navigation apparatus has a function of limiting the display area of the additional information so as to prevent the additional information from being displayed in an area having a relatively high level of importance. Thus, the real image is prevented from being difficult to see in the area having a high level of importance.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: February 28, 2006
    Assignee: Fujitsu Ten Limited
    Inventor: Hiroshi Kawasaki