Patents by Inventor John P. Adamson

John P. Adamson 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).

  • Digital tone generator for producing phase synchronized tones
    Patent number: 5945620
    Abstract: The present invention provides an apparatus and method for phase synchronizing tones in an electronic musical instrument. The apparatus includes a microprocessor having an input for receiving a signal representative of a selected note whereupon receipt of the signal, the microprocessor checks a set of available ranks to determine which of the available ranks is associated with the selected note. The apparatus further includes an oscillator which is established for each rank determined to be associated with the selected note such that each oscillator includes initializing parameters and initiating parameters which define the selected note and the associated rank. The apparatus also includes a plurality of tone engines for generating tones.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: August 31, 1999
    Assignee: Allen Organ Company
    Inventor: John P. Adamson