Patents by Inventor Toshitaka Fukushim

Toshitaka Fukushim 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).

  • STEPPING MOTOR CONTROL CIRCUIT AND ANALOG ELECTRONIC TIMEPIECE
    Publication number: 20120287760
    Abstract: A voltage detection circuit detects a voltage of a secondary cell that powers a stepping motor. A rotation detection circuit detects a rotation state of the stepping motor, and a control unit selects a main driving pulse for driving the stepping motor based on the detected rotation state from plural kinds of driving pulses having different energies. An analog display unit announces that the voltage of the secondary cell becomes a predetermined reference voltage when the voltage detection circuit detects that the voltage of the secondary cell becomes the predetermined reference voltage. When the control unit selects a predetermined main driving pulse before the voltage detection circuit detects that the voltage of the secondary cell becomes a current reference voltage, the control unit sets the reference voltage to the predetermined reference voltage higher than the current reference voltage.
    Type: Application
    Filed: May 8, 2012
    Publication date: November 15, 2012
    Inventors: Kenji OGASAWARA, Toshitaka Fukushim, Saburo Manaka, Akira Takakura, Hiroshi Shimizu, Kazumi Sakumoto, Keishi Honmura, Kosuke Yamamoto