Patents by Inventor Toshiaki Tsuruoka

Toshiaki Tsuruoka 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).

  • Switching output circuit with high speed operation and low power consumption
    Patent number: 4985648
    Abstract: Respective current supply means (I.sub.A, I.sub.B) control conducting periods of corresponding transistors (Q.sub.3, Q.sub.4), whereby conducting periods of driving transistore (Q.sub.6, Q.sub.7) are also controlled. Thus, periods in which both of the driving transistors (Q.sub.6, Q.sub.7) simultaneously enter ON states are reduced and through current (I.sub.S) flowing to the ground level GND through the driving transistors (Q.sub.6, Q.sub.7) is reduced. A pull-down transistor (Q.sub.8) controls a conducting period of the driving transistor (Q.sub.7), whereby periods in which both of the driving transistors (Q.sub.6, Q.sub.7) simultaneously enter ON states are reduced and the through current (I.sub.S) is reduced.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: January 15, 1991
    Assignees: Matsushita Electric Industrial Co. Ltd., Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshiaki Tsuruoka, Masafumi Nakamura, Shintaro Mori