Patents by Inventor Hirotaka Ishikawa

Hirotaka Ishikawa 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: 6624724
    Abstract: The present invention is intended to provide a line filter having an outstanding attenuation characteristic over a wide frequency band from low frequency band to high frequency band, with an improved elimination characteristic for common mode noises. To achieve this object, the invention incorporates a structure wherein a first coil unit (14) for second band and a second coil unit (16) for second band are disposed vertically to a closed-loop magnetic core (11).
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: September 23, 2003
    Assignee: Matsuhita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Tomita, Toshinori Oda, Hirotaka Ishikawa, Tatsuya Mori
  • Patent number: 6591406
    Abstract: A semiconductor apparatus, includes a semiconductor substrate, a first wiring, a second wiring and a capacitance cell. The first wiring is provided in the semiconductor substrate. The second wiring is provided in the semiconductor substrate. The capacitance cell includes a bypass capacitor connecting the first wiring to the second wiring.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: July 8, 2003
    Assignee: NEC Electronics Corporation
    Inventor: Hirotaka Ishikawa
  • Patent number: 6567024
    Abstract: An analog switch comprises a first transfer gate, a second transfer gate, an inverter and a transistor switch. The first transfer gate has the first input terminal and the first output terminal, and controls transmission of an input signal in accordance with a first control signal and a second control signal which is an inverse signal of the first control signal. The second transfer gate has the second input terminal and the second output terminal. The second input terminal of the second transfer gate is connected to the first output terminal. The second transfer gate controls transmission of an input signal which has passed the first transfer gate in accordance with the first control signal and the second control signal.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: May 20, 2003
    Assignee: NEC Corporation
    Inventor: Hirotaka Ishikawa
  • Patent number: 6539266
    Abstract: A computer system for detecting alteration of programs in which a plurality of check program portions are read from a storage medium which carries computer programs including the check program portions. Each check program portion is executed to detect alteration of at least one other check program portion.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: March 25, 2003
    Assignees: Konami Co., Ltd., Konami Computer Entertainment Tokyo Co., Ltd.
    Inventor: Hirotaka Ishikawa
  • Publication number: 20020158713
    Abstract: The present invention is intended to provide a line filter having an outstanding attenuation characteristic over a wide frequency band from low frequency band to high frequency band, with an improved elimination characteristic for common mode noises. To achieve this object, the invention incorporates a structure wherein a first coil unit (14) for second band and a second coil unit (16) for second band are disposed vertically to a closed-loop magnetic core (11).
    Type: Application
    Filed: December 26, 2001
    Publication date: October 31, 2002
    Inventors: Hiroshi Tomita, Toshinori Oda, Hirotaka Ishikawa, Tatsuya Mori
  • Patent number: 6320110
    Abstract: A music game device is provided in which a player manipulates a manipulation unit in conformity with music. The device includes an input unit for setting play information including a plurality of tunes to be successively played and a play order of the plurality of tunes, a storage unit for collectively storing the play information, an automatic setting changing unit for automatically changing a part of the play information set by the player to a preset standard play information if the play information set by the player includes a setting which cannot be executed by the music game device, and a reproduction unit for successively reproducing the plurality of tunes in the play order based on the play information stored in the storage unit.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: November 20, 2001
    Assignees: Konami Corporation, KCE Tokyo Inc.
    Inventors: Hirotaka Ishikawa, Akinori Tamura, Yasumi Takase, Takashi Nishibori, Kei Nagaoka, Yoshiko Wada, Yumi Yoshida, Kazuya Takahashi
  • Publication number: 20010042238
    Abstract: A semiconductor apparatus, includes a semiconductor substrate, a first wiring, a second wiring and a capacitance cell. The first wiring is provided in the semiconductor substrate. The second wiring is provided in the semiconductor substrate. The capacitance cell includes a bypass capacitor connecting the first wiring to the second wiring.
    Type: Application
    Filed: December 27, 2000
    Publication date: November 15, 2001
    Applicant: NEC Corporation
    Inventor: Hirotaka Ishikawa
  • Patent number: 6317130
    Abstract: Enabling an animation character object, which is pictorially deformed by computer graphics techniques to visually represent human body or animal or the like in the form of a caricature or model, to offer precise and more natural motions at its selected constituent portions that have inherently no joints and no bones by giving thereto joints and skeletons. To this end, apparatus and method for generating skeleton-based animation images in accordance with the principles of the invention include solving means as follows. A face section of a cubic character object is provided with auxiliary skeletons as vertically coupled together. Skeletons are provided which extend from respective endpoints of such auxiliary skeletons and are coupled defining an umbrella shape as a whole. These skeletons are associated with models each consisting of an ensemble of polygons for rendering the character deformable by changing rotation amount of each skeleton.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 13, 2001
    Assignee: Konami Co., Ltd.
    Inventors: Hirotaka Ishikawa, Kazunori Haruyama, Kazuhide Nakazawa
  • Publication number: 20010016510
    Abstract: To evaluate a game playing performance from a new point of view, a control method for controlling a game machine allowing a player to enjoy stepping while listening to game music, comprises the steps of detecting whether or not the player puts their foot or feet on each of a plurality of step positions; judging, based on a detection result on the step position, according to which, of a plurality of pattern changes, a state of the player's feet relative to the plurality of step positions has changed to; calculating, based on the determined pattern change, an energy consumption amount due to a change of the state of the player's feet; calculating an accumulative energy consumption amount by accumulating an energy consumption amount calculated after a predetermined timing; and reporting the accumulative energy consumption amount calculated to the player.
    Type: Application
    Filed: February 22, 2001
    Publication date: August 23, 2001
    Inventors: Hirotaka Ishikawa, Akinori Tamura, Yasumi Takase, Takashi Nishibori, Kei Nagaoka, Yoshiko Wada, Yumi Yoshida
  • Patent number: 6078242
    Abstract: A line filter capable of eliminating the common mode noise and the normal mode noise altogether. It comprises both the common mode noise elimination means and the normal mode noise elimination means. A central magnetic core 32 is provided in the middle flange 34 of bobbin 23. A through-window 36 is provided at a place facing the counterpart feet 27 of closed magnetic circuit core 28 so as a part of the central magnetic core 32 is exposed, but the central magnetic core 32 and the closed magnetic circuit core 28 are not making contact with each other.
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: June 20, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Tomita, Toshinori Oda, Hirotaka Ishikawa