Patents by Inventor Hisanobu Tukazaki

Hisanobu Tukazaki 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).

  • Charge coupled device provided with automatic bias-voltage setting means
    Patent number: 4625322
    Abstract: A bias voltage setting circuit for a main charge coupled device is disclosed in which first and second auxiliary charge coupled devices are formed on a semiconductor substrate together with the main charge coupled device, a reference voltage is generated by the first auxiliary charge coupled device, the output voltage of the second auxiliary charge coupled device is compared with the reference voltage by means of a comparator, the bias voltage applied to the second auxiliary charge coupled device is automatically changed by a feedback circuit so that the output voltage of the second auxiliary charge coupled device is approximately equal to the reference voltage, and the bias voltage applied to the second auxiliary charge coupled device is also used as the bias voltage applied to the main charge coupled device.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: November 25, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Hisanobu Tukazaki, Kazuo Kondo, Syuzo Matsumoto