Patents by Inventor Yoshio Iizuka

Yoshio Iizuka 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).

  • Information density decision circuit
    Patent number: 4138693
    Abstract: Herein disclosed is an information density decision circuit for deciding the information density of binary-coded signals within a specific section. According to the present invention, said circuit comprises first means to detect the transition points of the binary-coded picture signal, and second means responsive to detection of said transitions to count the number of the transitions of the binary-coded signal within a predetermined section being defined and to generate an output signal when said count has reached a certain value.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: February 6, 1979
    Assignee: Fujitsu Limited
    Inventor: Yoshio Iizuka