Patents by Inventor Yoshito Igarashi

Yoshito Igarashi 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).

  • FMX identification signal detection apparatus
    Patent number: 5103480
    Abstract: There is provided a FMX ID signal detection apparatus for discriminating between a FM broadcasting by means of a FM signal including a sum and difference signals M and S obtained from stereophonically related audio frequency source signals by matrix processing and a FMX broadcasting by means of a FMX composite signal including a compressed difference signal SD obtained by compresssing the dynamic range of the signal S, a FMX identification signal and the signals M and S.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: April 7, 1992
    Assignee: Victor Company of Japan
    Inventor: Yoshito Igarashi