Patents by Inventor Daniel T. Donaldson

Daniel T. Donaldson 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).

  • Automatically configured audio system
    Patent number: 5042070
    Abstract: An audio system has menu-driven controls using a select button to scan through possible functions and uses up and down adjustment buttons to modify the selected function. The menu of selected functions is automatically altered according to the presence of front and rear speakers to avoid any confusion from presenting a fade function on the menu when in fact there are not both front and rear speakers connected to the system.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: August 20, 1991
    Assignee: Ford Motor Company
    Inventors: Dennis J. Linna, Robert L. Focht, Daniel T. Donaldson