Patents by Inventor Toshihiro Kugimura

Toshihiro Kugimura 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).

  • Blanking circuit for use in a display apparatus which has a cathode-ray tube
    Patent number: 4814880
    Abstract: The screen grid of a CRT is connected to a blanking pulse amplifier by means of a resistor and a capacitor. This screen grid is also connected to the anode of a diode. The cathode of the diode is coupled to the ground by means of a ripple-removing capacitor, and is also connected by means of a resistor to the tap of a variable resistor for controlling the screen luminance of the CRT. During each scanning period of the CRT, the diode is turned on, thus equivalently connecting the ripple-removing capacitor to the screen grid. During each blanking period of the CRT, the diode is turned off, thereby disconnecting the ripple-removing capacitor from the screen grid.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: March 21, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Toshihiro Kugimura