Patents Assigned to John Ellis Enterprises
  • Fretboard to synthesizer interface apparatus
    Patent number: 4468997
    Abstract: Apparatus for detecting note selection on a guitar fretboard including a differential amplifier for detecting voltage drops across successive fret pairs, a multiplexer for connecting successive fret pairs to the differential amplifier, counters for maintaining an indication of the string and fret position under examination, and a shorting string placed across the frets for insuring reliable circuit operation.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: September 4, 1984
    Assignee: John Ellis Enterprises
    Inventor: Leroy D. Young, Jr.