Patents by Inventor Tomohisa Yokokawa

Tomohisa Yokokawa 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).

  • Program identifier signal receiver
    Patent number: 4686707
    Abstract: A multi-bit program identification signal is transmitted in the audible band with a program signal, and a receiver detecting the program identification signal automatically sets a predetermined minimum volume for reproduction of the program information. The volume control circuitry at the receiver can be made responsive to any one of a plurality of different program identification signals.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: August 11, 1987
    Assignee: Pioneer Electronic Corporation
    Inventors: Hideki Iwasaki, Tomohisa Yokokawa, Masanori Kurosaki