Patents by Inventor Shigemi Igarashi

Shigemi Igarashi 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: 5555021
    Abstract: An object of the present invention is to provide a compact television camera having a circuit that prevents switching noises by that a transistor of a power supply circuit being switched on for a dc-dc converter only during a blanking period eliminates the need for a transformer and shielding box for the dc- dc converter circuit and a low-pass filter circuit, thereby allowing the camera body to be made smaller. The compact television camera circuit, comprises in combination, a synchronizing signal generator (1), a timing signal generator (2) for generating a timing signal from said synchronizing signal generator (1) output, a vertical driver (3) and a horizontal driver (4) for generating vertical and horizontal scanning signals using the timing signal, a CCD pick-up device (5), a low-pass filter (8) for eliminating the high-frequency components of a video signal (b) output of said CCD pick-up device (5), and an output amplifier (11) for feeding out the video output signal (a).
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: September 10, 1996
    Assignee: Watec America Corporation
    Inventor: Shigemi Igarashi
  • Patent number: 5369493
    Abstract: An apparatus for transporting an electronic component includes a head for holding the component when the component is picked up from a suitable storage device. The head is movable relative to a base with an imaging apparatus being fixed to the head and allowing position of the component relative to the head to be determined while the component is being transported. A movable optical component is provided on the head which, in one position, contributes to defining an optical path between the component and the imaging apparatus, and in another position, is withdrawn. A further imaging apparatus may be provided, on the base or on the head with the further imaging apparatus detecting the position of large components, if the first imaging apparatus has a narrow filed of view for small components. Alternatively, when the further imaging apparatus is on the head, the imaging apparatus may detect the position to which the component is to be transported.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: November 29, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Masamichi Tomita, Kazuo Honma, Shigemi Igarashi, Tadaaki Ishikawa, Ryu Takizawa, Sotozi Hiramoto, Makoto Honma, Seiji Hata, Mitsuo Nakamura
  • Patent number: 4787262
    Abstract: The present invention relates to the wrist device of a robot which has a speed reducers built in a wrist portion and which attains three degrees of rotating freedom orthogonal to one another, and is characterized in that three transmission shafts penetrating through the interior of an arm are arranged in parallel with one another as power transmission means within the arm.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: November 29, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Fusaaki Kozawa, Shigemi Igarashi, Koh Tsuji, Tatenori Jinriki
  • Patent number: 4156810
    Abstract: A transmitting device of light signal for remote control of television channel, sound volume, radio, tape recorder, etc, to transmit a light signal to a receiving device which is provided in the device which is to be controlled. Said light signal has at least two light pulses, i.e. first, and a second pulse and time interval Tp between said first, and a second light pulse which differs according to an operated switch, i.e. controlling matter. A delaying circuit is provided between the circuit of the switch and a gate circuit of a thyristor for producing said secondary light pulse so as to avoid controlling the gate of thyristor during an unstable condition immediately after the operation of said switch.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: May 29, 1979
    Assignee: Sato Koki Company Limited
    Inventor: Shigemi Igarashi
  • Patent number: 4091398
    Abstract: Electronic photoflash unit has functions as a remote control device transmitter and as photoflash for flash photography. The photoflash unit decreases the amount of radiated light when used as the remote control device transmitter and increases the light when used as the photoflash for making photographs.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: May 23, 1978
    Assignees: Nippon Kogaku K.K., Sato Koki K.K.
    Inventors: Yozo Iida, Yasuhito Kawahara, Shigemi Igarashi
  • Patent number: 4048540
    Abstract: In an electronic flash unit serving both as the transmitter of a remote control device and a flash unit for flash photography, there is provided a power source, a flash discharge tube, and a discharging circuit having an interlocking switch adapted to be closed in response to electrical connection of the flash unit to the synchro contacts of a camera. The discharging circuit may produce a greater magnitude of discharging current for the flashing of the discharge tube during the closing of the switch than during the opening of the switch. The flash unit further includes a trigger circuit having an extraneously operable trigger switch and effective to trigger the flash discharge tube to effect the discharge of the discharging circuit. Thus, the quantity of flash light emitted from the flash discharge tube is less during the disconnection of the flash unit to the camera's synchro contacts than during the connection of the flash unit to said synchro contacts.
    Type: Grant
    Filed: January 20, 1976
    Date of Patent: September 13, 1977
    Assignees: Nippon Kogaku K.K., Sato Koki K.K.
    Inventors: Yozo Iida, Yasuhito Kawahara, Shigemi Igarashi