Patents by Inventor Tadakazu Morisawa

Tadakazu Morisawa 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).

  • Patent number: 4079207
    Abstract: A telecommunication switching system in which a required number of switching arrays or matrixes are combined together and the switching arrays or matrixes are divided into a group having in a predetermined ratio outlets of non-multiple connection and outlets of multiple connection, and into a group having outlets of multiple connection, whereby to obtain a desired concentration ratio without using new exclusive switching arrays or matrixes, or rendering some inlets of the switching arrays or matrixes of no use. In the selection or hunting of outlets of the switching arrays or matrixes, the selection or hunting starts with the outlets of non-multiple connection so long as an idle outlet exists, and thereby improves the traffic characteristics of the switching system.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: March 14, 1978
    Assignee: Nippon Telegraph and Telephone Public Corporation
    Inventors: Tohru Ueda, Tadakazu Morisawa, Yoshiaki Nunotani