Patents by Inventor Hisatoshi Takahata

Hisatoshi Takahata 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).

  • Flash photographing system
    Patent number: 4695148
    Abstract: Flash photographing system comprises a camera and a flash unit, which are exchangeable data. The flash unit is provided with a control circuit transmitting a power source control signal to a camera when a power source switch of the camera is not turned on, thereby enabling data exchange between the camera and the flash unit.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: September 22, 1987
    Assignee: Nippon Kogaku K. K.
    Inventors: Nobuhiko Terui, Hisatoshi Takahata
  • Driving device for illuminating lamp of flash apparatus
    Patent number: 4652108
    Abstract: Driving device for illuminating lamp of flash apparatus comprises means for detecting supplied voltage supplied to the illuminating lamp and generating a detection signal corresponding to thus detected voltage, power supply means for supplying power to the illuminating lamp according to the supplied voltage, and means for controlling the period of power supply from the power supply means to the illuminating lamp according to the detection signal.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: March 24, 1987
    Assignee: Nippon Kogaku K. K.
    Inventors: Yoshikazu Iida, Hisatoshi Takahata
  • Photographic information generating apparatus for camera
    Patent number: 4603959
    Abstract: A camera has a photographic information generating apparatus for supplying preset photographic information to an exposure control circuit. A latch circuit is arranged to latch the photographic information during a period in which noise due to synchronization of at least an electronic flash device is generated.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: August 5, 1986
    Assignee: Nippon Kogaku K. K.
    Inventor: Hisatoshi Takahata
  • Automatic stop control circuit for camera
    Patent number: 4579439
    Abstract: An automatic stop control circuit is so constructed that in a period wherein the photo metering output signal is adversely affected by a counter electromotive pulse generated during the operative period of the electromagnetic release device for camera release, the operation of the automatic stop control circuit is prohibited. Note that the camera release herein includes a release operation for initiating a series of operations including the stop-down operation for taking a photograph, a mirror-up operation and a shutter running operation.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: April 1, 1986
    Assignee: Nippon Kogaku K. K.
    Inventor: Hisatoshi Takahata